Web Scraping Developer

@Microlent

Hello! I design production-grade scraping systems built for durability, determinism, and scale not quick scripts that break under pressure. Understanding You need: • Fault-tolerant scraping pipelines • Robust session/auth handling • Anti-bot resilience • Deterministic data capture with zero loss • Structured storage with monitoring Approach Core Stack • Python 3.11 • Playwright (preferred) for browser automation • Async architecture with asyncio • PostgreSQL (JSONB where flexibility needed) • Redis for queueing and rate control Architecture Principles • Idempotent jobs to prevent duplicate writes • Structured retry strategy with exponential backoff • Circuit breakers for endpoint instability • Persistent session vault (cookies/tokens encrypted at rest) • Proxy rotation layer with health scoring Anti-Detection • Humanized interaction timing • Header and TLS fingerprint rotation • HAR-based reverse analysis of network behavior • Fallback to API interception where possible Data Integrity • Atomic DB transactions • Checksums for payload validation • Dead-letter queues for failed jobs • Full audit logging Monitoring • Structured logging • Metrics via Prometheus • Alerting on failure thresholds and data drift I can share examples of high-concurrency, stateful scraping systems I’ve built. Best regards, Jasmin

@LiveExperts

Hello, As an experienced developer with an extensive skillset, I believe I am the right person for your Web Scraping project. Specifically, my proficiency in Python and deep knowledge of HTTP, APIs, and browser behavior aligns perfectly with your requirements. I have hands-on experience with popular tools like Playwright and Selenium, which will ensure smooth handling of authentication, rate limits, and anti-bot protections. Moreover, my understanding of structured storage including SQL and JSONB goes hand in hand with your needs for reliable data extraction. What sets our team at Live Experts apart is not just our technical expertise but also our dedication to detail-oriented work. We consistently think in edge cases that most developers might overlook, building systems with zero tolerance for data loss. This philosophy perfectly aligns with your request for "deterministic, fault-tolerant workflows". Having tackled numerous projects requiring large-scale scraping architectures before, we are well-acquainted with the challenges that may arise and are capable of delivering high-quality results. Furthermore, our additional skillsets in computer science - especially machine learning and big data analysis - provide external support to the core task at hand. Lastly, at Live Experts®, we value client satisfaction above all else and pride ourselves on delivering on that promise; a trait that has helped us build a solid reputation in the f Thanks!

@MashoodurRehman1

I am a seasoned Web Scraping Developer with extensive experience in designing and maintaining scalable scraping systems. My proficiency in Python, SQL, and JSONB complements my solid understanding of HTTP, APIs, and browser behavior. I have a proven track record of developing robust scrapers that handle authentication, manage rate limits, and employ anti-bot protections effectively. My experience with tools like Playwright, Puppeteer, and Selenium allows me to build deterministic, fault-tolerant workflows that ensure zero data loss and maintain high integrity. I possess deep knowledge of proxy management and anti-detection strategies. Additionally, I have experience with PostgreSQL and system design which aligns well with building large-scale scraping architectures and optimal performance setups. I am eager to discuss your needs in detail and how I can contribute to building a reliable, production-grade scraping system for you. Could you provide more specifics on the scale and scope of the data to be scraped? Best regards,

@ZohaibRoy

⭐⭐⭐⭐⭐ Build Reliable Web Scraping Systems with an Expert Developer ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you are looking for an experienced Web Scraping Developer. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for web scraping. I will create scalable web scrapers, manage data extraction, and ensure high data integrity while staying within your budget. ➡️ Why Me? I can easily handle your web scraping needs as I have 5 years of experience in Python, web scraping, and data extraction. My expertise includes working with tools like Selenium, Playwright, and Puppeteer. I also have a strong grip on HTTP, APIs, and database management, ensuring a comprehensive approach to your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you! ➡️ Skills & Experience: ✅ Python Programming ✅ Web Scraping ✅ Data Extraction ✅ API Integration ✅ Session Management ✅ Proxy Management ✅ Database Management (PostgreSQL) ✅ Error Handling ✅ Data Integrity ✅ Monitoring & Logging ✅ Automation with Selenium ✅ Performance Optimization Waiting for your response! Best Regards, Zohaib

@neerajdhameliya

Hello I looked at your project. It really caught my attention. I would love to help you build and improve your web scraping systems using Python. I have experience working on applications that extract data handle sessions and keep things reliable when dealing with large amounts of data. I know how to make these systems fast, accurate and easy to maintain. In my experience I have built systems that can handle things like authentication, proxies and anti-bot measures. I also make sure that data is stored securely and that there is real-time monitoring. My main goal is to create applications that're strong can handle a lot of work and are simple to manage. This way your team can focus on understanding the data of maintaining the system. You can check out some of my work here: ==> https://www.freelancer.com/u/neerajdhameliya Here's how I can help with your web scraping project: -> Build scalable Python scrapers and data pipelines -> Manage sessions, tokens, rate limits, and anti-bot protections -> Set up real-time monitoring, logging, and alerts -> Store data securely in SQL or JSONB -> Write tests and maintain clean, documented code -> Provide documentation and a team walkthrough I think I can help make your Python web scraping systems reliable and ready for production. I can make sure they work well and can handle large-scale data extraction. I look forward, to hearing from you. Niral D

@Fazeennazar

Hello! I’m an experienced Python developer specializing in building production-grade web scraping systems with strong reliability and data integrity guarantees. I’ve developed scalable scraping pipelines using Playwright and Selenium, handling authentication flows (sessions, cookies, rotating tokens), rate limits, retries, and anti-bot mitigation strategies. My approach focuses on deterministic, fault-tolerant workflows with structured logging, monitoring, and alerting to ensure zero data loss. I’m comfortable working with PostgreSQL (including JSONB), designing clean schemas, and maintaining consistent export pipelines. I also have experience with proxy rotation, browser fingerprint management, and analyzing network traffic via DevTools and HAR files. Performance optimization and edge-case handling are core parts of how I design systems. I’d be glad to discuss your scraping architecture and help build a resilient, maintainable solution. Best regards

@diektech

Hi, I’m Elias from Miami. I reviewed your scope carefully — you’re not looking for quick scripts. You need production-grade scraping infrastructure that survives anti-bot systems, preserves session state, and guarantees data integrity under scale. I design scraping systems as deterministic pipelines, not ad-hoc crawlers. Python-based workers (Playwright when JS-heavy, HTTP clients when possible), strict request fingerprint control, rotating proxy pools, retry logic with idempotent checkpoints, and structured persistence in PostgreSQL (JSONB where flexibility is needed). Every job is traceable with logging, metrics, and alerting so failures are visible immediately. Authentication flows (cookies, tokens, CSRF) are handled explicitly, with session refresh logic and expiration detection. I focus heavily on edge cases: partial loads, silent schema shifts, rate limiting, and anti-bot challenges. I’ve built high-volume extraction systems with monitoring, retry queues, and fault-tolerant orchestration where zero data loss was non-negotiable. I have a few questions for clarification: Q1. What scale are you targeting (requests/day and concurrent targets)? Q2. Are targets mostly static HTTP endpoints or JS-rendered/SPAs? Q3. Do you already have a proxy provider, or should that be part of the architecture?

@farhanyoussef18

Youssef, Full-Time Freelancer with Python Programming expertise, I'm keenly interested in your Web Scraping Developer role. Your need for reliable, production-grade scraping systems that handle authentication, rate limits, and ensure zero data loss aligns perfectly with my background. I've successfully built over 155 projects, specializing in scalable data extraction pipelines and complex automation workflows. I leverage tools like Playwright, Selenium, and Scrapy to design fault-tolerant systems, manage dynamic content, and integrate with structured storage, like SQL, for high data integrity. My approach includes robust monitoring and logging. I have extensive experience delivering similar web scraping projects with deterministic outcomes.

@intelliresponse

With over 13 years of experience in Python and a key focus on web automation and data scraping, I am the perfect fit for your project. My expertise in handling customized python web automation and scraping projects extends to encompassing major challenges like managing authentication, handling rate limits, and anti-bot protections while never sacrificing data integrity. I am well-versed with tools like Playwright, Puppeteer, Selenium, and hold a solid understanding of HTTP, APIs, and browser behavior. Additionally, I bring proficiency in managing structured storage (SQL / JSONB) which is crucial to ensuring your production-grade scraping systems are rock-solid. Skilled at proxy management and anti-detection strategies, I can design deterministic workflows that optimize performance without compromising reliability. My passion lies in developing high-impact solutions that deliver results, a characteristic that aligns perfectly with your requirements. Let me bring my meticulous, detail-oriented approach towards building systems that never miss data to your project. Choose me and together we will transform your web scraping requirements into efficient reality. Contact me today!

@divumanocha

Hello Greetings, After reviewing your project description, I feel confident and excited to work on this project for you. But I have some crucial things and queries to clear out. Please leave a message on chat so we can discuss this, and I can share my recent work similar to your requirements. Thanks for your time! I look forward to hearing from you soon. Best Regards.

@tangramua

Dear ,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in Python, Testing / QA, Software Architecture, Software Testing, Software Development, Git, Documentation, Reverse Engineering, Software Engineering, CI/CD and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.    Best regards, Sales department Tangram Canada Inc.     

@Rekhathakur

As the founder of WellSpring Infotech, I have a deep commitment to delivering reliable and efficient solutions. In our decade-long tenure in the industry, we have built and maintained scalable systems with meticulous attention to detail -- a skill essential for web scraping. By combining strong Python expertise with a solid understanding of HTTP, APIs, and browser behavior, we ensure every unique aspect is accounted for. Additionally, we appreciate the necessity for high data integrity and zero data loss. Our experience with structured storage such as PostgreSQL makes us well-suited to handle your project's needs. We are also well-acquainted with tools like Playwright, Puppeteer, Selenium - which you mentioned as a requirement - which ensures efficient and effective scraping. Ultimately, our mission aligns perfectly with yours: to complete this project reliably and with utmost accuracy. What sets us apart is not only our technical prowess but also our dedication to delivering robust cybersecurity measures and comprehensive project management. This guarantees unrivaled data security as well as seamless execution throughout the development process. Let’s discuss how my team can contribute to your success by optimizing your scraping system!!! Thank you!!!

@justmian876

I am Sami from BN-Droids Digital Services, and I am your go-to expert for all things web scraping. With a strong background in Python, I have been successfully managing complex scraping systems for over five years. My comprehensive understanding of HTTP and APIs, combined with experience in working with tools like Playwright and Selenium, equip me to build reliable, scalable scrapers that can handle any challenge. Moreover, I have an excellent grasp of database management (including PostgreSQL) and have designed deterministic workflows that ensure zero data loss and high integrity. Delivering 1 million+ scraped data entries daily is no mean feat, and this is a testament to my keen eye for detail and a deep understanding of handling anti-bot protections and rate limits - all skills critical to providing your project with a high level of service. Let's dive into the future together with BN-Droids Digital Services, where digital excellence is at the forefront of everything we do. Choose me to get a robust, dependable web scraping system that never misses out on a single valuable piece of data. Let's talk more about your project requirements and take it to new heights!

@hireageek

Hi there,\n\nI am a top freelancer based in California with extensive experience in web scraping and data extraction projects. I understand the importance of building reliable, production-grade scraping systems that manage data integrity and handle complex authentication and anti-bot protections. My background in Python and familiarity with tools like Playwright, Puppeteer, and Selenium perfectly position me to tackle your project effectively.\n\nI pride myself on developing fault-tolerant workflows and scalable data extraction pipelines while ensuring zero data loss. I can also design comprehensive monitoring and logging mechanisms to keep your systems performing optimally. As soon as we discuss your specific requirements, I can start outlining a plan tailored to your needs. Please feel free to reach out so we can chat further about how I can help you. What specific data sources do you need the scrapers to target, and are there any particular challenges you've faced in previous projects?

@Julian29

Hello, I have carefully reviewed your web scraping requirements and fully understand the need for deterministic, production-grade extraction systems with strong fault tolerance and data integrity. With 10+ years of experience in Python and backend engineering, I have built scalable scraping pipelines using Playwright, Selenium, and headless browser automation, handling authenticated sessions, rotating proxies, token-based flows, and advanced anti-bot mitigation strategies. My approach focuses on resilient architecture: structured retry logic, idempotent jobs, queue-based processing, rate-limit awareness, proxy rotation management, and full monitoring with logging and alerting. I design pipelines that validate and reconcile data before persistence (PostgreSQL/JSONB), ensuring zero-loss ingestion. I also work with HAR analysis, DevTools protocol inspection, and performance profiling to optimize stability and speed at scale. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE, WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON STORES. I am confident in delivering a robust, maintainable scraping infrastructure. I eagerly await your positive response. Thanks.

@noursherif030

With over 5 years of experience in software development, I bring to the table a solid understanding of Python, one of the key requirements for this project. Having worked extensively with full-stack web development, API integrations, and automation scripts - I am more than capable of coding efficient and reliable web scrapers that can handle complex data extraction scenarios. My experience with tools like Playwright and Selenium further ensures my ability to manage rate limits, retries and anti-bot protections effectively. In addition to my core programming capabilities, I also possess a deep understanding of HTTP, APIs, and browser behavior which will be crucial for the success of this project. Not only can I build robust scraping systems but can also guarantee zero data loss and high data integrity. As a cybersecurity specialist, I have spent significant time managing proxy systems and exploiting procedures that adjust for anti-detection protocols - key elements your project will require. Moreover, my expertise in database usage – with PostgreSQL as my preferred choice, adds even greater value to my candidature.

@denisSolution

Hello client, I’ve carefully reviewed your job description and have strong experience in these Documentation, CI/CD, Software Testing, Testing / QA, Software Architecture, Python, Reverse Engineering, Software Engineering, Software Development and Git. I can build a reliable web scraping solution tailored specifically to your needs. Whether using Node.js with Puppeteer/Cheerio or Python with Selenium/BeautifulSoup, I will extract, clean, and organize your data efficiently. I also handle anti-bot protections, pagination, and full automation as required. As you can see from my profile, my web scraping reviews are excellent, reflecting my commitment to quality work. I focus on writing clean, maintainable, and scalable code because I know the difference between 99% and 100%. If you hire me, I’ll do my best until you’re completely satisfied with the result. Let’s discuss your target website and preferred data format. Thanks, Denis

@GameOfWords

Web Scraping Developer I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.

@quan9824

https://www.freelancer.com/projects/data-scraping/Automated-Counterfeit-Detection/reviews Dear. Nice to meet you. I am very pleasure to submit my proposal on your scrapping and automation project. I have many experiences in these field using python. Recently, I developed Automated Counterfeit Detection and Reporting System on Amazon. You can check this in my portfolio. I am sure and I can start immediately. I will wait for your good news. Thank you.