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 MissionFlipflow is a Retail Market Intelligence & Digital Shelf Analytics Saa S 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 & ImpactWe 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:
Descubra exactamente qué habilidades, experiencia y cualificaciones necesitará para tener éxito en este puesto antes de enviar su solicitud a continuación.
Customer accounts receive complete, accurate data by keeping crawlers running at full capacityAnti-bot and anti-scraping protections are systematically analyzed, understood and bypassedOur scraping infrastructure evolves to stay ahead of detection systems, reduce block rates and increase data coverage What will you do?Reverse Engineering & AnalysisResearch, reverse-engineer and bypass anti-bot systems (Cloudflare, Akamai, Data Dome, Perimeter X/HUMAN, Kasada, Imperva) — deobfuscating detection scripts, analyzing fingerprinting vectors and defeating challenge mechanisms. Building Anti-Detection InfrastructureDevelop 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 InnovationActively research new anti-bot techniques, evasion strategies and detection trends. You'll stay ahead of an industry that evolves weekly. Your ProfileMust-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 Java Script detection scripts.Experience with Python and/or Type Script (Node.js). Highly valued:
Knowledge of TCP/IP fingerprinting (p0f, MTU/MSS) and proxy/VPN detection techniques.Experience with browser internals — Web GL 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. EducationBachelor'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 CompetenciesAt 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 actionAdversarial thinking — you understand how detection systems work from the inside and enjoy finding creative ways around themPractical, execution-focused mindset — shipping beats theorizingComfort operating in ambiguous, fast-changing environments where protections evolve weeklyCuriosity and continuous learning — you read security blogs, follow anti-bot research and stay up to date with the latest evasion techniquesSolid communication and collaboration skills What We Offer
Compensation: Competitive salary aligned with a engineering roleReal impact: Your work directly enables the entire platform's data collectionAccelerated learning: Exposure to cutting-edge anti-bot systems, browser internals and adversarial security. xpzdshu You will work alongside amazing Senior teammates building complex software.Flipflow culture: High standards, autonomy, frequent feedback and strong teamworkFlexibility: Hybrid model (2 days remote / 3 onsite) Location: Offices in La Marina, Valencia, within the Lanzadera ecosystemIf you're excited about understanding how the web works at its deepest level and outsmarting the systems designed to stop you, we'd love to meet you.