👋 Hi there!
At Flipflow, we're looking for an Anti-Bot Engineer to join our Technology team and play a key role in how our platform collects data at scale from the open web — reliably, efficiently and undetected.
This is a very hands-on, full-time engineering role, deep in the trenches of web scraping infrastructure and anti-detection systems.
You will work at the intersection of Engineering, Research and Operations, ensuring our crawlers can access any public website, bypass bot-detection systems and deliver high-quality data to our customers.
🌍 About Flipflow & Our Mission
Flipflow is a Retail Market Intelligence & Digital Shelf Analytics SaaS platform, currently scaling internationally after strong growth in Spain and Latin America.
Since our launch in 2021, our mission has been clear:
To give brands, manufacturers and retailers a real-time, actionable and reliable cockpit and AI copilot to understand their products, competitors and markets — enabling better business decisions.
Retail is undergoing one of the biggest transformations in its history: markets are global, competition is tougher than ever, and margins increasingly depend on execution and data.
At Flipflow, we believe real-time competitive intelligence is no longer optional — it's a strategic advantage.
📊 = 💰
🎯 Your Challenge & Impact
We collect data from hundreds of retailers and marketplaces worldwide — each with different anti-bot protections, page structures and access challenges.
As an Anti-Bot Engineer, your mission is to ensure that:
- Customer accounts receive complete, accurate data by keeping crawlers running at full capacity
- Anti-bot and anti-scraping protections are systematically analyzed, understood and bypassed
- Our scraping infrastructure evolves to stay ahead of detection systems, reduce block rates and increase data coverage
🧑🏻💻 What will you do?
Reverse Engineering & Analysis
- Research, reverse-engineer and bypass anti-bot systems (Cloudflare, Akamai, DataDome, PerimeterX/HUMAN, Kasada, Imperva) — deobfuscating detection scripts, analyzing fingerprinting vectors and defeating challenge mechanisms.
Building Anti-Detection Infrastructure
- Develop and maintain stealth crawling solutions — browser automation with authentic fingerprints, HTTP/TLS fingerprint evasion (JA3/JA4), proxy rotation strategies and session management that survives across crawl cycles.
Research & Continuous Innovation
- Actively research new anti-bot techniques, evasion strategies and detection trends. You’ll stay ahead of an industry that evolves weekly.
👤 Your Profile
Must-have:
- 4+ years of experience in Anti-Bot Engineering, Web Scraping Engineering, Offensive Security Research, Penetration Testing (web-focused) or similar roles.
- Strong experience with browser automation and stealth/anti-detection techniques.
- Solid knowledge of HTTP internals (HTTP/1.1, HTTP/2, HTTP/3) and TLS mechanics (JA3/JA4 fingerprints, cipher suites).
- Ability to deobfuscate and reverse-engineer JavaScript detection scripts.
- Experience with Python and/or TypeScript (Node.js).
Highly valued:
- Knowledge of TCP/IP fingerprinting (p0f, MTU/MSS) and proxy/VPN detection techniques.
- Experience with browser internals — WebGL rendering, canvas fingerprinting, Audio API identification.
- Bug bounty, CTF experience or contributions to open-source anti-detect/scraping tools.
- Familiarity with Go for high-performance HTTP clients.
🎓 Education
Bachelor's degree in:
- Computer Science (Grado en Ingeniería Informática) — focused on software engineering, systems, networks and security.
- Cybersecurity or related specialization — with strong emphasis on web security and adversarial techniques.
- Or equivalent professional experience in related technical fields.
🧠 Core Competencies
At Flipflow, we value engineers who combine technical skills with operational impact.
We're looking for someone with:
- Ownership mindset, reliability and a strong bias towards action
- Adversarial thinking — you understand how detection systems work from the inside and enjoy finding creative ways around them
- Practical, execution-focused mindset — shipping beats theorizing
- Comfort operating in ambiguous, fast-changing environments where protections evolve weekly
- Curiosity and continuous learning — you read security blogs, follow anti-bot research and stay up to date with the latest evasion techniques
- Solid communication and collaboration skills
💥 What We Offer
