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Full-Stack Developer for MVP Website Monitoring and Audit Suite We are seeking a skilled Full-Stack Developer to create a Minimum Viable Product (MVP) for a website monitoring and audit suite. The ideal candidate will have experience with both front-end and back-end technologies to build a user-friendly and efficient platform. You will be responsible for designing, developing, and implementing features that allow users to monitor website performance and conduct audits effectively. Strong problem-solving skills and attention to detail are essential. If you are passionate about building innovative solutions, we would love to hear from you! Key Responsibilities: Scanner Engine: Build a resilient microservice using Puppeteer and the Lighthouse Engine capable of mobile-first emulation and hardware throttling. Time-Series Data: Implement PostgreSQL with the TimescaleDB extension to manage millions of historical performance metrics via Hypertables. Job Queuing: Manage background scanning tasks using Redis and BullMQ to ensure horizontal scalability. API Design: Develop RESTful endpoints for on-demand scans, time-series data retrieval, and automated white-label PDF generation. Technical Requirements: Node.js / TypeScript Mastery (NestJS or Express preferred). Expertise in Puppeteer/Playwright and bypassing WAFs (Stealth plugins/Residential Proxies). Strong experience with PostgreSQL and time-series extensions (TimescaleDB/InfluxDB). Experience with [login to view URL] for a performant frontend dashboard. Deliverable: A fully functioning MVP capable of handling 5,000+ daily scans across 20+ global nodes. Milestone Payment Schedule (8 - Week MVP) Milestone 1: Data Foundation & Infrastructure (20%) Focus: Establishing a high-performance time-series database and the "Scraper" core. Week 1 (Infra & DB): Set up Dockerized environments (Production/Staging). Initialize PostgreSQL and enable the TimescaleDB extension. Task: Create the scans table and convert it into a hypertable partitioned by a created_at timestamp. Task: Create a composite index on (user_id, created_at DESC) for fast user-specific history lookups. Week 2 (Scanner Core): Develop the Puppeteer script with stealth plugins to avoid detection. Task: Implement a data-mapping function that converts raw Puppeteer output into the SQL schema. Deliverable: A script that can be executed via CLI and saves a record successfully. Milestone 2: Background Processing & Scalability (30%) Focus: Moving from a manual script to a production-grade asynchronous queue. Week 3 (Queue Setup): Deploy Redis for state management. Set up BullMQ with a dedicated scanner-worker process. Task: Implement "Global Concurrency Limiting" (e.g., max 5 Puppeteer instances) to prevent server RAM exhaustion. Week 4 (API Development): Endpoint: POST /v1/scan – Accepts a URL, validates it, and pushes a job to BullMQ. Returns a jobId. Endpoint: GET /v1/scan/:jobId – Checks Redis to return pending, active, failed, or completed. Task: Implement Exponential Backoff logic (retrying a scan if it hits a 403 or timeout error). Milestone 3: UI & Analytics Engine (30%) Focus: Speeding up data retrieval and building the user interface. Week 5 (Data Aggregation): Task: Create TimescaleDB Continuous Aggregates (Materialized Views) for daily/weekly averages so the frontend doesn't have to calculate thousands of rows on every refresh. Task: Set up a Refresh Policy to update these aggregates every hour automatically. Week 6 (Frontend Integration): Endpoint: GET /v1/analytics/history – Returns aggregated data from the Continuous Aggregate. Task: Connect the UI to a WebSocket (using [login to view URL]) to provide real-time updates on the progress bar while a scan is running. Deliverable: A dashboard that loads in under 500ms even with 10,000+ data points. Milestone 4: Billing, Reporting & Hardening (20%) Focus: Monetization and production stability. Week 7 (Monetization & Reporting): Endpoint: POST /v1/billing/create-subscription – Integrates Stripe Checkouts. Task: Implement a Stripe Webhook listener to enable/disable user features based on payment status. Task: Use a library like jspdf or puppeteer-pdf to generate a downloadable report from the dashboard view. Week 8 (Testing & Launch): Task: Conduct Load Testing—simulate 50 users triggering scans simultaneously to verify Redis/BullMQ stability. Task: Final security audit (Environment variable protection, rate-limiting on APIs). Deliverable: Production deployment on your final server (AWS/DigitalOcean/Hetzner). Please find the attached requirements doc.
Projekt-ID: 40241732
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109 freelancere byder i gennemsnit $1.156 USD på dette job

I am a seasoned Full-Stack Developer with over 10 years of experience in web and mobile development, specializing in building innovative solutions across various industries. I understand that you are looking for a skilled developer to create a Minimum Viable Product (MVP) for a website monitoring and audit suite. With my expertise in Node.js, TypeScript, PostgreSQL, and Puppeteer, I have successfully delivered projects in fintech, blockchain, and eCommerce domains. My experience aligns perfectly with the technical requirements for this project, and I am confident in my ability to design, develop, and implement the features you require. By leveraging my skills in API design, time-series data management, and frontend development, I am well-equipped to deliver a fully functioning MVP capable of handling 5,000+ daily scans across global nodes. I am excited about the opportunity to work on your project and bring your vision to life. Please feel free to reach out to discuss how we can collaborate and create a successful website monitoring and audit suite.
$1.200 USD på 20 dage
8,8
8,8

Hi there It is a big detail , i am placing a placeholder bud for now, tomorrow i will prepare a proper proposal for you and submit Acceot my apology and allow me time Thank you
$1.000 USD på 30 dage
9,0
9,0

As a Full-Stack Developer, I bring you an impressive record of developing high-performance solutions using cutting-edge technology. I have extensive experience not only with each of the key requirements of your project like Node.js, TypeScript, PostgreSQL, and API Development; but also with the broader development space - front-end to back-end. Over my 10+ years in this field, I’ve built up a strong track record in empowering businesses across various industries by automating and streamlining operations. This lines up perfectly with your need for a website monitoring and audit suite that is user-friendly, efficient, and scalable. One of the prominent aspects of our software expertise is embracing disruptive tools and techniques – and your project requires precisely that kind of approach! From bypassing WAFs to setting up Dockerized environments to leveraging time-series extensions like TimescaleDB/InfluxDB, we've got the technical arsenal to underpin even complicated functionalities. Furthermore, Our prowess in Node.js/TypeScript Mastery will ensure seamless performance of both frontend dashboards and microservices like Puppeteer/Playwright.
$750 USD på 7 dage
8,1
8,1

SCALABLE MONITORING ARCHITECTURE: TIMESCALEDB & DISTRIBUTED SCANNING CORE Building a resilient audit suite requires a precise balance of resource throttling and data optimization. At Plan D Studios, we bring 12+ years of experience in web development and custom software, specializing in high concurrency SaaS engines and complex API integration. Our Technical Execution for Your MVP: Resilient Engine: We implement Puppeteer with stealth plugins and proxy rotation, managed by BullMQ to prevent RAM exhaustion through global concurrency limiting. Time Series Mastery: We’ll configure PostgreSQL hypertables and continuous aggregates to ensure your dashboard analytics load instantly, regardless of the data volume. Backend Architecture: Using Node.js and TypeScript, we’ll build the API development layer to handle asynchronous job states and real time updates via WebSockets. Production Hardening: We ensure 100% in house execution, focusing on horizontal scalability and automated PDF reporting as per your 8 week roadmap. We are ready to meet your specific benchmarks for 4G emulation and hardware throttling. For your 20+ global nodes, are you prioritizing a centralized PostgreSQL instance or a distributed database approach to minimize cross region latency? Let’s scale your audit suite message us to discuss the infrastructure setup. Regards, Haider
$1.150 USD på 30 dage
6,7
6,7

Solid project - this stack is right in my wheelhouse. I've built scraping and monitoring infrastructure with Puppeteer + stealth plugins, so I know the quirks around WAF bypassing and chromium pooling. For the scanner engine I'd use NestJS (great fit for queue workers + microservices), Puppeteer with stealth and a fixed concurrency limit via BullMQ workers. TimescaleDB setup is straightforward - hypertable on scans partitioned by created_at, composite index on (user_id, created_at DESC), chunk compression for older data. Redis + BullMQ for the job queue is the right call for horizontal scaling. Couple of things I'd want to clarify before starting: - For the 20+ global nodes, are you thinking a centralized queue dispatching to remote Puppeteer workers, or independent nodes each with their own queue? - For the white-label PDF reports, existing design templates or building from scratch? I can start this week. Happy to do a quick call to align on architecture first. - Usama
$1.400 USD på 56 dage
6,7
6,7

With over a decade of experience in web development and a strong focus on backend technologies, I'm confident that I can help bring your vision for a successful MVP website monitoring and audit suite to life. My expertise in PHP & MySQL lends itself directly to efficient data management, which will be crucial for handling the large amounts of historical performance metrics this project requires. Further, my knowledge of PostgreSQL and time-series extensions like TimescaleDB will enable me to create the high-performing time-series database you need, ensuring your system operates smoothly and optimally. In addition to my backend skills, I am well-versed in Node.js and its TypeScript variants like NestJS and Express - making me adept at not only designing but also optimizing your endpoints for on-demand scans, timeseries data retrieval, automated white-label PDF generation etc. My proficiency with Puppeteer/Playwright combined with bypassing WAFs will be invaluable when it comes to building a resilient scanner engine capable of mobile-first emulation and hardware-throttling.
$1.500 USD på 54 dage
6,4
6,4

Hi I checked your requirements and I am extremely interested in taking your project. We would like to grab this opportunity and will work till you get 100% satisfied with our work. I am flexible in prices, as quality & long-term relationships are more important. Note:- This is a place holder bid. So the Actual price and time will be given after complete discussion. Looking forward to the opportunity to work together. Regards Jignesh
$1.125 USD på 7 dage
5,2
5,2

Hello, Your MVP aligns perfectly with the kind of performance-driven, scalable systems I build. This isn’t a basic dashboard project — it’s a distributed monitoring platform, and I’m comfortable designing production-grade architectures that handle high concurrency, time-series data, automation, and real-time UX. I work full-stack with Node.js/TypeScript, microservices, queues, and data pipelines, focusing on reliability, clean structure, and long-term scalability from day one. Execution approach: • Puppeteer/Lighthouse microservice with stealth + WAF bypass. • Redis + BullMQ for distributed job orchestration. • TimescaleDB hypertables + continuous aggregates. • API-first architecture with clean REST contracts. • WebSocket real-time scan status. • Dockerized, production-ready deployment. • Strong concurrency control and fault tolerance. You’ll get a clean, modular codebase, scalable infrastructure, and an MVP that’s engineered like a real SaaS product — not a fragile prototype. My focus is building systems that survive scale, not just pass demos. Best Regards, Abhijeet
$1.200 USD på 7 dage
6,6
6,6

Hello, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Cloud Computing, Node.js, PostgreSQL, Redis, AngularJS, Full Stack Development, Cloud Development, API Development, SaaS Please come over chat and discuss your requirement in a detailed way. Regards
$1.100 USD på 7 dage
4,9
4,9

Hello Client, Hope you are great!!! I read you job description you are looking for web developer. I have sound of 7 years exp in wordpress, PHP, CI, Laravel, Drupal, Joomla and developed 145+ websites with good design. We are using the MVC model for security of website as well as develop three layer security in website and website is high skilled code follow all standards of development. I have been worked on many domain like ecommerce, Martrimony, Hotel Booking, Social, Healthcare, and Sport etc. I provide new vision for website and am always available for your support(24*6) . I hope you will be give positive response. Thanks
$750 USD på 20 dage
5,2
5,2

Being the founder and CEO of Web Crest, a successful technology company, I have curated a highly competent team of 10 experts who are instrumental in turning ideas into powerful digital solutions. With our extensive experience in AI automation, web and software development, cloud infrastructure and more, we ensure to deliver high-performing, scalable applications. My personal proficiency lies with API development, Full Stack Development, Node.js, PHP, and PostgreSQL; all of which would come invaluable in working on your MVP for Website Monitoring / Audit Suite project. My expertise with Puppeteer/Playwright and PostgreSQL time-series databases such as TimescaleDB also aligns perfectly with your project requirements. The reason why our clients count on us is because we provide more than just exceptional code - we're long-term technology partners. We value transparent communication and maintain a robust workflow that keeps our clients informed about the progress of their projects at every stage. Moreover, we strive to produce not just good-looking but high-performing platforms that grow alongside your business needs. Let's connect and drive innovation together!
$1.200 USD på 5 dage
4,7
4,7

Hello, With over a decade of experience in full-stack development, I am confident that I have the skill-set necessary to build an exceptional MVP website monitoring and audit suite. My expertise in Node.js is perfect for this project due to its event-driven, non-blocking nature which will guarantee smooth operation and effective handling of large data sets. Additionally, my mastery of TypeScript, PostgreSQL, TimescaleDB, and Puppeteer perfectly align with the technical requirements of this project ensuring a seamless integration of front-end and back-end technologies. In conclusion, choosing me for this project means choosing not just a developer but a partner who is dedicated to delivering excellence. I have the technical competence as well as the determination to make your ideas come alive in such detail that you'll feel like you are browsing your own dream. Let's work together to create efficient software that exceeds all expectations!
$1.000 USD på 3 dage
2,0
2,0

I am excited about the opportunity to create an MVP for your Website Monitoring and Audit Suite. My experience with Node.js, TypeScript, and NestJS puts me in the perfect place to build a resilient microservice using Puppeteer and Lighthouse engine for mobile-first emulation and hardware throttling. As you need a platform that can handle massive amounts of data, I'm fluent in integrating PostgreSQL with TimescaleDB to manage exactly this scenario. Reach out to me and let's discuss how we can turn your vision into reality!
$1.800 USD på 20 dage
2,2
2,2

Being proficient in AngularJS, Full Stack Development, Node.js, and PHP, I bring a strong set of technical skills for your MVP project. My understanding of frontend and backend technologies will enable me to design a user-friendly auditing platform for monitoring website performance. Moreover, I have extensive experience in products handling large-scale data, so your need to handle millions of historical performance metrics would pose no challenge when working with technologies like PostgreSQL and TimescaleDB in managing huge databases. In addition to my technical expertise, I am known for my meticulous problem-solving ability and unwavering attention to detail; which are crucial for the proficient running of a monitoring suite that needs accurate results. As your project requires adhering to aggressive timeframes and adherence milestones payment schedule, it is worth mentioning that I not only deliver on time but also ensure the quality of the work is impeccable. With me, you can feel confident about the efficiency and scalability of the microservices Lastly, aside from my skillset, what sets me apart from other contenders is my passion for building innovative solutions. Since your project deals with cutting edge technology like Puppeteer / Playwright and WAF bypassing techniques using plugins like Stealth/ Residential proxies, having someone on board who finds excitement in discovering new ways to tackle problems can be a gamechanger indeed.
$1.125 USD på 7 dage
1,0
1,0

Dear Client, We are excited to propose the development of a new website for your business. Our team has extensive experience in web development, with expertise in PHP, CodeIgniter, WordPress, Python, HTML, and ReactJS. Our proposed website will be built using a combination of these technologies to provide a modern, responsive, and user-friendly experience for your visitors. We will work closely with you to ensure that the website meets your needs and exceeds your expectations. Please have a look at my portfolio link : https://www.freelancer.com/u/khushiArt Regards Khushbu
$750 USD på 20 dage
0,9
0,9

Hi, this is not a basic audit tool. The real challenge is building a scalable time series architecture that can handle 5000 daily scans without blocking the dashboard or exhausting RAM. I am a full stack Node.js developer and I will build this MVP with a microservice scanner, BullMQ worker isolation and a TimescaleDB hypertable strategy as outlined in your document . Scanner will run in isolated workers with concurrency limits, 30 second timeout and retry logic. Performance data will be chunked, indexed and compressed for fast dashboard loads. API will enforce tier gating, rate limits and white label PDF logic. Clear 8 week phased delivery with production deployment. Ready to start immediately. Verma
$1.125 USD på 7 dage
0,0
0,0

Hi, This project is a great fit for my backend + DevOps experience. I’ve worked on cloud-hosted systems that rely on queues, background workers, Docker environments and production deployment, which aligns very closely with your MVP roadmap. How I would approach your MVP: Infrastructure & Data Layer • Dockerized staging + production setup • PostgreSQL + TimescaleDB hypertables and indexing • Redis + BullMQ worker architecture with global concurrency control • CI/CD + production deployment on AWS/DigitalOcean Scanner & Backend • Puppeteer/Lighthouse worker service with retry & backoff logic • REST API for scan orchestration and analytics retrieval • Continuous aggregates for fast historical metrics • WebSocket updates for real-time scan progress Production Readiness • Rate limiting, env-secrets management, load testing • Stripe subscription + webhook integration • Automated PDF report generation • Monitoring and scaling readiness I focus on building reliable, scalable MVPs that can evolve into production SaaS platforms. I can deliver the full MVP within 6–8 weeks and start immediately. Happy to discuss architecture and next steps.
$950 USD på 54 dage
0,0
0,0

Hi there, I can deliver your 8-week MVP with a scalable, production-ready architecture built around Node.js, Puppeteer, TimescaleDB, Redis, and Next.js. I’ll develop a resilient scanner microservice with concurrency control and smart retry logic, implement TimescaleDB hypertables with continuous aggregates for fast analytics, and manage background jobs using Redis + BullMQ to support 5,000+ daily scans. The API layer will include scan control, analytics retrieval, Stripe billing integration, and automated PDF reporting. The frontend dashboard will be optimized for sub-500ms loads with real-time WebSocket updates. The entire system will be Dockerized, load-tested, secured, and deployed to your preferred cloud provider. My focus is clean architecture, scalability, and SaaS-grade stability from day one. I’d be happy to share my relevant portfolio and similar project experience with you in chat. Looking forward to discussing further. Best Aish
$1.100 USD på 30 dage
0,0
0,0

Hello, I’ll help you build your Monitoring MVP using a high-performance scanner and a data-rich dashboard. With eight years of experience, I’ll leverage Puppeteer and TimescaleDB to ensure your audits are fast, precise, and ready to scale. Send me a message so we can discuss your scanner requirements and MVP goals. Best regards, Hassan
$751 USD på 7 dage
0,0
0,0

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