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I need a professional to create an advanced Excel-based sales forecasting model. This model will integrate data on sales volume, revenue, and customer demographics, across various time periods - monthly, quarterly, and yearly. Key requirements: - Incorporate Sales Volume, Revenue, and Customer Demographics - Develop the model for Monthly, Quarterly, and Yearly forecasting - Integrate and track Gross Profit Margin, Conversion Rate, and Average Order Value as key metrics Ideal Skills & Experience: - Advanced Excel Proficiency - Proven track record in Sales Forecasting - Experience with Power BI for data visualization - Strong understanding of Gross Profit Margin, Conversion Rate, and Average Order Value in a sales context This project is crucial to our business planning...

I need a professional who can scrape videos. I'm looking for someone who can download videos at its maximum size from websites.

I need a comprehensive statistical analysis ...my survey data using descriptive statistics, and I'd like the results presented in visually engaging charts and graphs. Your main tool for this should be Microsoft Excel. Key Responsibilities: - Perform a detailed descriptive statistical analysis of my survey data. - Translate the findings into easy-to-understand charts and graphs. - Ensure all the visualizations are created using Microsoft Excel. Ideal Skills and Experience: - Proficiency in statistical analysis, particularly in descriptive statistics. - Strong experience in creating visual representations of data through charts and graphs. - Expertise in using Microsoft Excel for data visualization. - Ability to present complex statistical information in a clear a...

I need a skilled Excel expert to create a comprehensive spreadsheet and optimize its formulas and functions. The project needs to be completed within a month. Key Tasks: - **Spreadsheet Creation**: The successful freelancer will be responsible for creating a detailed spreadsheet that will serve as a part search tool. - **Formula and Function Optimization**: I need assistance in optimizing the formulas and functions within the spreadsheet. This is to ensure the tool is efficient, accurate and user-friendly. I would like to have a new parts search screen made up similar to the one attached ( Storeroom Parts Locator. ) but using the attached excel sheet (inventory Report) Nice UI on front page would be great! should be able to search for description and or part number. re...

About the Role: A renowned leader in digital security is actively seeking a skilled Golang Developer for a contract role focused on developing a Golang agent for SSL certificate management, which will interface with a PHP API. This opportunity is ideal for back-end development professionals who excel in automation, system operations, and delivering high-quality outcomes in a remote environment. Project Overview: As a Golang Developer, you will be instrumental in: - Developing a Golang agent to manage SSL certificate lifecycles, interfacing with a PHP API. - Implementing features such as system monitoring, logging, and robust error handling. - Performing thorough testing and optimizations to ensure system reliability and efficiency. - Collaborating with remote teams to ensure seaml...

Hello, I'll optimize your site Guaranteed 90+ score on Google Page Speed, A+ grade in GtMetrix with 4-5 seconds maximum loading time for permanent. You will get these things in my Advance Speed optimization:- 1: Images will be properly optimized. 2: CSS & JS will be minified. 3: HTML will be minimized. 4: Remove unnecessary codes from your site without breaking the site. 5: Deferred javascript on larger size elements. 6: Database will be Optimized I'm a professional Website optimizer and have more than 4 years of experience in it. I will do this project in 6hrs. I optimized almost 100+ websites and gave my clients 100% satisfaction. Hope you will give me a chance to work with you. Looking forward to working with you.

I'm in need of a creative, modern logo design for my streaming platform. The logo should be a combination of text and symbol - something that is easily recognizable and memorable. Name: Tiny Flix Site: (not active) Audience: Young/youth Style: Youthful/Playful Key requirements: - A fun and playful design that captures the essence of entertainment, aimed at my target audience. - A modern and innovative touch in the design to reflect the nature of my streaming service. The logo will be primarily used on my website and across various social media platforms. Hence, it should be adaptable to different sizes and formats. Ideal skills for this project: - Strong graphic design skills with a proven track record in creating logos. - An understanding of branding and the ability t...

Need an accounting and valuation expert with good excel skills.

...that can process a provided Excel file and display the data in various ways. Key Features: - The app should be able to read the Excel file I provide. - It should show the numeric data per line and column as specified in the Excel. - It should also be able to perform statistical analysis on the data. - The app should provide graphical representation of the data. Users should be able to interact with the data within the application in a 'view only' mode. Ideal Skills: - Proficient in Android app development - Experience with Excel data processing - Ability to implement statistical analysis in an app - Familiarity with graphical representation in mobile apps - Excellent understanding of data visualization Please let me know if you require any fur...

I'm looking for a professional to help me with my bid proposal for a healthcare tender in Quebec, Canada. The project requires the following: - Writing the bid proposal: The key aspect of this project is to craft a persuasive and comprehensive bid proposal for the tender. The proposal needs to highlight our qualifications, experience, and unique selling points effectively. Ideal Candidate: - Fluent in French: The proposal needs to be written exclusively in French. Therefore, proficiency in the language is a must. - Experience in healthcare: Prior experience in the healthcare sector is a plus, as it will help in understanding the sector-specific requirements and tailoring the proposal accordingly. - Bid writing expertise: A background in bid writing...

I'm in need of someone who can create a simple JPEG in a 2:3 (portrait) including the attached info on hoeg not excel format. The design style should predominantly be green and favor a minimalist approach. THIS IS FOR THE WEBSITE Key Responsibilities: - Creating a JPEG media card design. - Utilizing a 2:3 (portrait) layout. - Integrating a predominantly green color scheme. - Implementing a minimalist style. Ideal Skills: - Proficient in graphic design. - Prior experience with media card layouts. - In-depth knowledge of color theory. - Advanced user of design software (Adobe Suite, etc.) - Understanding of minimalist design principles. Please include samples of prior work, especially with media card layouts. Looking forward to seeing your creations!

I want it to be wordpress based, it can be a ready theme, my domain address is available, it must be within an appropriate budget, please write that they will not charge a fee different from the offer you made.

I need an expert in WordPress to build an informational website...photo/video content…but that is “value add” as long as the core content found within the brochure is present. Note that I uploaded a PDF version for size limitations, but an editable version is available. Key Responsibilities: - Designing and developing an engaging and functional website with a user-friendly interface - Ensuring website is mobile-responsive - Incorporating text and images into site content Ideal Experience & Skills: - Proficiency in WordPress and responsive design - Strong graphic design and layout skills - Experience creating websites for a tech-savvy audience - Excellent attention to detail - Ability to create engaging UI/UX I'm looking forward to seeing your wond...

I have an excel SS that I need some quick formula help with. No VBA please. Table with expenses, then another table dividing up. I need the expense categories divided over months as per quantaty of time it is used. Explained in the SS attached. I need this done ASAP. Your responsibilities: - Understand the project financials and structure the Excel to match - Create a Gantt style tallies that captures my project expenses effectively Skills and Experience: - Solid expertise in advanced Excel functions - Experience in financial tracking, preferably in project management - Ability to work fast and deliver quickly Note: I didn't specify the expense categories so it should be customizable to accommodate any kind of expense. However, quick delivery is of utmost pr...

Wordpress SITE Work Wordpress SITE Work

I'm looking for an individual proficient in data entry, email management, online research, and making phone calls. Your daily tasks will primarily involve: - Performing data entry tasks using Microsoft Excel - Managing email communications effectively and promptly - Conducting online research as required - Making certain phone calls when necessary -Schedule is 9am-3pm CST (Monday-Friday) In addition, experience with project management software 'Click Up' will be highly favored. A strong work ethic, attention to detail, and excellent communication skills are fundamental for this role. The selected candidate will be expected to perform these tasks on a daily basis. Your ability to meet deadlines and work independently will contribute significantly to the smooth operat...

Want to integrate SendGrid with Laravel admin 1) Create Temporary email by staff wise 2) Track all emails sent and received and stored in MySQL DB using Setting Up The Inbound Parse Webhook SendGrid service ----------------------- Integrate Lightspeed K series with Laravel admin 1) Sync Menu API 2) Sync Products API 3) Sync Orders using API API document mentioned on the Lightspeed website.

I need a excel data sheet typist frequent in basic as well as skillful skills. There's no error in the formats and also professionally done with great effort.

Hey! I have experties on statistical analysis.

As your project manager, I am seeking a Shopify developer who can elevate my current website by integrating custom buttons and additional menus. This will not be a complete overhaul, but an enhancement to our pre-existing design. Ideal Candidate Skills: - Fluent in Shopify design customi...integrating custom buttons and additional menus. This will not be a complete overhaul, but an enhancement to our pre-existing design. Ideal Candidate Skills: - Fluent in Shopify design customization - Experience in adding design elements to existing websites - Expertise in custom button integration - Proficient in creating efficient additional menus Your role will mainly involve giving our Shopify site a makeover while keeping the current design and layout. Succinct yet impressive results ar...

...candidates are thoroughly vetted. I'm seeking a freelancer in Saint-Denis, France to conduct a pre-employment vetting site visit. In this role, you'll help us assure our candidates' suitability for the job at hand and contribute to maintaining a secure workplace. Your role: • Verify the candidate's previous work experience • Authenticate professional licenses or certifications What we will provide: • Certificate for authentication • Details for verifying job titles and employment dates Requirements: Site visit geotagged pics and complete verification form filled accurately. Note: Multiple site visits might be required only in case , complete information is not acquired on 1st site visit. Ideal freelance...

We are looking for a freelancer to scrape product information from Website and organize it in an Excel spreadsheet. Key Requirements: - The script should extract all text content and images displayed on the homepage need be add to excel file

...platform. Key Features: - E-commerce functionality to facilitate online transactions. - Blogging platform to share engaging content with visitors. Design: - I don't have a specific design in mind, so I'm open to your creative ideas. I encourage innovative suggestions to make the site more engaging for users. SEO Optimization: - It's crucial that the website is optimized for search engines. So, hands-on experience in SEO would be highly beneficial. The objective is to increase visibility and improve the ranking of the site on search engines. Skills and Experience: - Proven experience with WordPress, particularly in e-commerce and blogging platforms. - Strong creativity and design skills. - Solid expertise in SEO. - Good communication and understanding o...

I am in need of an experienced and skilled SEO expert to help improve the search engine rankings of my product pages on Google and Manage SMO. Key Requirements: - The main goal of this project is to enhance the search engine rankings of my product pages by utilising effective SEO strategies. - Regular Social Media Posts - I'm focusing specifically on Google, so the freelancer must be well-versed in Google's search algorithms, rules, and best practices. - My website mainly consists of product pages, so the freelancer must be able to optimize product pages specifically. Ideal Skills and Experience: - Proven experience in SEO, particularly in optimizing product pages. - In-depth knowledge of Google's search engine algorithms and the ability to keep up with their rapidly chang...

Project Description: We have developed our website using the Hostinger Web Builder and are now looking to enhance its functionality by integrating an Indian payment gateway. Our goal is to provide a seamless and secure payment experience for our Indian customers, accommodating various local payment methods including credit/debit cards, UPI, net banking, and wallets. Objectives: Payment Gateway Integration: Successfully integrate a popular Indian payment gateway ( Razorpay) with our existing website created on Hostinger Web Builder. Key Deliverables: Fully Integrated Payment Gateway: A fully functional and secure payment system integrated with the website. Customization and Configuration: Customization of the payment gateway to align with the look and feel of our existi...

...constantly updated depending on the configuration. 6. After completing the configuration, no order should be created in the system, but an offer should be created automatically as an Excel file, which is not sent to the customer, but to the office sales department, which checks the offer and can see which parts have been added, so that prices are added and finally sent to the customer. A second Excel file must also be created for production so that they know which parts are required for construction. 7. Synchronise article and customer master data between Majesty and Odoo. Majesty can only export the data using an Excel file and has no API. 8. Design customisation so that configurations that have already been made are collapsed, so that the page remains clearer due ...

IA-calculated Excel Sheet Want to design an auto-calculated editable quotation, Purchase order, Invoice, and company letterhead in Excel and log-register quotation price and list in excel details as below All the Reports , Log, Purchase Order Quotation has to be Printed in PDF Sample Attached Customization is required as per our requirement The Provided Sample Sheets all Need to Be Combined in One Sheet Excel ERP Template Sales Pipeline Excel Template Excel Quotation Generator with Database Commercial Invoice Generator Excel Template Contractor Invoice Excel Template Vender List, Client List , Purchase order , Quotation & Invoice Log Excel Purchase Order Generator and Tracker Employee Attendance Tracker and Payroll ...

I'm looking for a freelancer to create an Excel dashboard that will be linked to a Microsoft PowerApp. The dashboard will be used for monitoring various data points. Key Details: - The dashboard will need to be dynamic and allow for updates directly from a database. - The successful freelancer will need to demonstrate experience in creating similar solutions in the past and provide a detailed project proposal for this task. The ideal candidate will have: - Proficiency in Excel, particularly in the creation of dynamic dashboards. - Experience with database connectivity and management. - Previous work examples that showcase their ability to create effective and user-friendly solutions. - Strong communication skills and a proactive approach to project management. ...

My website, , is currently displaying a "this site ahead contains harmful programs" message. I am the owner and administrator of the website, and I urgently need this warning removed. I have not received any specific details or error codes from my web hosting provider or Google Search Console, however, this issue needs to be resolved as soon as possible. Ideal Skills and Experience: - Proven experience in website security and malware removal - Familiarity with Google Search Console and potential harmful program warnings - Prompt response time and effective communication - Ability to troubleshoot and resolve issues quickly Please only bid if you are confident in your ability to swiftly and effectively remove this warning from my website.

I have a medium-sized Excel dataset that needs to be cleaned and analyzed. The tasks include formatting cells, filtering, and sorting data. Moreover, I'm looking for a professional who can conduct statistical analysis on this dataset. Key tasks: - Formatting cells: This involves making sure that the data is presented in a readable and visually appealing format. - Filtering and sorting: The freelancer should be able to organize the data in a way that makes it easy to understand and analyze. - Statistical analysis: The dataset needs to be analyzed statistically. This means that the freelancer should be proficient in statistical tools and techniques. Ideal candidate: - Proficient in Excel: The freelancer should have excellent skills in using Excel for data cleaning...

I have undertaken the exciting task of establishing an e-commerce platform to sell physical products and I've chosen Python Django as the preferred platform. I need a skillful developer or team to bring this vision to life. Key Aspects of the Project: - Crafting a Django e-commerce website to sell physical products. - Implementing a design and theme that I've already prepared. Ideal Skills & Experience: - Proficient in Python Django with a keen understanding of its core principles. - Demonstrable experience in e-commerce website development. - A great eye for detail to transfer designed themes into lines of code. - Proven ability to deliver on time and according to design specifications. - Previous work with physical product e-commerce sites is a great plus. Imprint your...

In need of a detailed-oriented freelancer for an alphanumeric data entry ...freelancer for an alphanumeric data entry project using information sourced through online research. Key Responsibilities: - Source relevant information using online research methodologies - Accurately input alphanumeric data into a system - Ensure the final data is properly structured and error-free The final data should be delivered in an Excel spreadsheet format. Ideal Skills: - Experience with online research tools - Proficient in Excel - Fast typing skills - High attention to detail - Previous experience in alphanumeric data entry roles. The success of the project will be measured by the accuracy of inputted data. Proven examples of prior work in a similar data entry position will be...

I am in need of a sharp and detail-oriented freelancer to assist me in a unique data entry task. Your primary responsibility will be to find pictures that correspond to specific words, and organize them in an Excel database. This project is crucial for the development of a comprehensive picture-based database. Key Responsibilities: - Search for images that match specific words - Organize the found images in an Excel database Ideal Skills and Experience: - Proficiency in using Excel for data entry - Strong attention to detail - Ability to efficiently find and match images - Prior experience working with picture databases would be a plus Please ensure that the images you find are high quality and in either JPG or SVG formats. Your work will be integral in the creation...

Hello, we are looking for an experienced event on-site video editor, for a corporate event that is happening on Wednesday 26th June 2024 at a hotel in Miami. An ‘event summary film’ is created every year for this annual global event that changes location every year, and this year the event is being held in Miami. At the end of the event the short (3-4 minute) ‘closing film’ is played out, created from GVs and b-roll that is shot during the event. The edit is usually done in the late afternoon, evening, and night within a single day. We would expect the editing shift to be from approximately 03:00 pm - 01:00 am, so a little overnight work is anticipated. The edit is approved at about 01:00am (or before), because it includes some footage that comes from a...

I'm looking for a PowerBI expert to set up a dashboard for our construction project. This dashboard should pull data from Excel spreadsheets and provide valuable insights into our construction progress. Key Requirements: - Integrating Excel Spreadsheets: The primary data source for this project will be Excel spreadsheets. Your ability to connect and visualize data from this source is vital. - Construction Progress Monitoring: The dashboard's main focus should be on monitoring our construction progress. This includes: - Project Timeline: Displaying where we stand in terms of project timeline against the planned schedule. - Budget Utilization: Visualizing how the budget is being utilized in real-time. - Resource Allocation: Demonstrating how resources a...

I'm looking for a professional freelancer to convert a 300-line PDF bank statement into an Excel report for reporting purposes. The specific bank statement details that need to be included are Date and Description as well as Debit and Credit amounts. Key Requirements: - Extract date and description details from the bank statement - Extract Debit and Credit amounts from the bank statement - Must have a clear understanding of date formatting in Excel Ideal Skills/Experience: - Must have extensive experience in data entry and Excel - Should have a good understanding of banking terms - Attention to detail is critical - Previous experience in bank statement conversion will be advantageous.

We are looking to collect the current prices for 5 specific procedures from local clinics. We need a call center to call 200 dental clinics from a list that...have already created to inquire about pricing. You will be calling as if you are an interested patient inquiring about getting the procedure. You will then fill out the 5 procedure costs on the excel sheet. We are hoping to hire a call center that speaks English with minimal accent. We have a general script. Each phone call should not last more than a few minutes. You need to have more multiple people on your team as we would like this project done very quickly. You also must be able to call from a US based phone number and have it show up on the caller ID. Start immediately. Pay is $250. Do not bid higher, as we wi...

I'm looking for someone proficient in Excel to assist with data entry and basic data analysis. Requirements: - The task involves entering numerical data into an Excel sheet. - The data is for both analysis and record-keeping, so accuracy is crucial. - I also need some basic Excel functions applied to the data, particularly summation and averages. Skills & Experience: - Proficient in Excel with experience in data entry - Knowledge of basic Excel functions (sums, averages) - Attention to detail for accurate record-keeping - Some experience with data analysis would be a plus Looking forward to your bids. Thank you.

I'm in need of a skilled professional who can adeptly handle both copywriting and Excel data analysis tasks. For this project, the copywriting will need to be informative in nature. Aim it towards industry professionals, with the intent of providing detailed information in an engaging, digestible format, not advertising or branding. Excel expertise should include, but not be limited to, proficient data analysis capabilities to make sense of complex datasets. Ideal skills for the job: - Proven experience in copywriting, specifically informative writing. - Strong knowledge of Excel, particularly in the field of data analysis. - Ability to communicate complex information in an understandable manner to industry professionals. - Excellent attention to detail. - Proact...

I'm seeking an individual proficient in Excel, with significant experience specifically in entering statistical data. The task revolves around efficiently and accurately typing numbers into an Excel sheet, which will then be processed for statistical analysis. Key Responsibilities: - Accurately input numerical data into Excel - Familiarity with statistical data is advantageous - Format inserted numbers as percentages Ideally, the individual will have stellar attention to detail, the ability to work under tight deadlines, and a strong grasp of handling statistical data. Prior experience in a similar role will definitely give you an edge.

I'm looking for a professional who can assist me with organizing financial data in an Excel sheet. This organized data will be used for reporting purposes. Key Responsibilities: - Inputting and arranging financial data - Ensuring accuracy and consistency of data - Creating a well-structured Excel sheet for reporting Ideal Skills and Experience: - Proficiency in Excel and data entry - Attention to detail and accuracy - Understanding of financial data - Experience with creating reports from data The successful freelancer will need to have a keen eye for detail, as the accuracy and correctness of the data is crucial for its utilization in our reporting.

I'm in need of an Excel database creation expert to help me establish a system to store and manage customer information. The project is time-sensitive, so I need someone who can get on it ASAP. Key Responsibilities: - Building an Excel database for customer information, possibly by using Chat GPT for data population - Ensuring the database is well-structured and easy to navigate for future reference - Implementing any necessary formulas or functions that can enhance the utility of the database - Ensuring the project is completed in a timely manner, as I need it done ASAP Ideal Skills: - Proficiency in Excel, with experience in database creation and management - Knowledge of using Chat GPT for data entry is a plus - Ability to structure data in a clear and organ...

I'm in need of an Excel database creation expert to help me establish a system to store and manage customer information. The project is time-sensitive, so I need someone who can get on it ASAP. Key Responsibilities: - Building an Excel database for customer information, possibly by using Chat GPT for data population - Ensuring the database is well-structured and easy to navigate for future reference - Implementing any necessary formulas or functions that can enhance the utility of the database - Ensuring the project is completed in a timely manner, as I need it done ASAP Ideal Skills: - Proficiency in Excel, with experience in database creation and management - Knowledge of using Chat GPT for data entry is a plus - Ability to structure data in a clear and organ...

Hi there! I am venturing into e-commerce and need a professional to help me install a WordPress template which I will provide. This project not only requires template installation, but also its customization...product page. - An easy Facebook login integration. This project requires a keen understanding of WordPress, e-commerce necessities, and social media integrations. The ideal freelancer would have prior experience in e-commerce site development, WordPress customization, basic coding knowledge, and preferably with some knowledge of UI/UX design. Please do showcase your previous works when bidding for a better review. The project's success will heavily rely on effective communication, therefore, your availability and responsiveness are paramount. Let's build this si...

I'm in need of a skilled professional who can adeptly handle both copywriting and Excel data analysis tasks. For this project, the copywriting will need to be informative in nature. Aim it towards industry professionals, with the intent of providing detailed information in an engaging, digestible format, not advertising or branding. Excel expertise should include, but not be limited to, proficient data analysis capabilities to make sense of complex datasets. Ideal skills for the job: - Proven experience in copywriting, specifically informative writing. - Strong knowledge of Excel, particularly in the field of data analysis. - Ability to communicate complex information in an understandable manner to industry professionals. - Excellent attention to detail. - Proact...

I am seeking a VBA expert with extensive experience in Excel for the creation of a custom macro. The specific task will involve designing a macro that can efficiently audit the financial records of a Trust. The audit should be conducted at a yearly level, ensuring accuracy and comprehensiveness in the review. Key tasks for the project include: - Building an automated audit tool: The macro should be capable of assessing financial records of the Trust with minimal manual intervention. - Ensuring high level of detail: The work is format based. Proper posting of the records should be done repeatedly year on year - Application in Excel: The macro should be fully functional in Excel, allowing for easy integration into the Trust's existing data management processes. I...

...three-pronged job involving: 1. Entering Contact Information: You will input a myriad of contact details into an Excel spreadsheet. Accuracy is paramount. 2. Updating Databases: You'll be responsible for ensuring that all existing data is up-to-date. If a discrepancy is noticed, you will correct it. 3. Transcribing Documents: Transcription services are required. You need to accurately transcribe information from diverse documents. In addition to the aforementioned tasks, this job involves email verification for all entries; without exception. Needless to say, your keen attention to detail would be required to spot and correct any errors. The ideal candidate would have past experience with Excel spreadsheets, database management, and transcription. Excellent ...

...analysis. Achieve monthly targets of 150 salons signed and 3,000 app downloads to qualify for performance bonuses. Provide real-time geolocation updates during field movements. Candidate Requirements: Minimum 2 years of experience in B2B sales, preferably within the beauty, wellness, or tech industries. Strong understanding of sales strategies and customer relationship management. Proficient in Excel and capable of managing basic sales data analysis. Exceptional communication and interpersonal skills. Ability to commit to BookBook's unique brand and sales approaches. Must be organized, self-motivated, and capable of working under pressure to meet sales targets. Compensation and Incentives: Monthly salary of £2,000 after taxes. Promising £4,000 compensation follow...

I have C# MVC Web App that works using SQL Server Database & using APIs at the same time. For the functions that use the database, I want to replace them with the APIs 1- Error message appear with no details, need to make the error message has Show More to display the details of the error. 2- Load Codes from APIs instead of loading from JSON file. (1 API) require updating treeview to load on demand 3- Packages Load from APIs instead of loading from DB (2 APIs) 4- SubscribedPackages Call API instead of inserting into a DB (1 API) 5- Schemes Load from APIs instead of loading from DB (1 API) 6- Uploads Call API instead of inserting into a DB (1 API) 7- Users Call API instead of inserting and reading from a DB (5 APIs) you...

I'm seeking an expert to revise an annual financial model for a Saas Startup. The successful bidder will be tasked with modifying revenue projections, adjusting expense figures and adding new financial metrics. The final version of the model should be delivered as an Excel spreadsheet. This project requires deep knowledge of financial analysis, Excel forecasting tools and financial metrics. Familiarity with financial models and proven track record in creating or modifying them is essential.