A5 Labs

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Senior/ Principal Full-Stack Engineer (B2C Anti-Cheat POC) Node.js / React Remote | Full-Time About the Role We are building a B2C Anti-Cheat product surface that exposes integrity signals, trust scores, and suspicious behavior indicators to end users. This role is focused on execution — building the first production-grade POC that turns anti-cheat outputs into real, user-facing product experiences. You will work closely with the Data / Anti-cheat team and integrate detection outputs into scalable backend services and intuitive frontend dashboards. This is a hands-on role with direct impact on product delivery. What You’ll Do 1️⃣ Build the Anti-Cheat Application Layer (POC First) Develop backend services (Node.js) to consume integrity signals from data systems Design APIs that serve trust score, risk indicators, and evaluation results Build real-time and batch processing flows for B2C hand evaluation Ensure reliability and clean data boundaries 2️⃣ Deliver B2C Product Surfaces (React) Player integrity dashboard Trust score visualization “Why this score?” explanation UI Suspicious signal indicators Evaluation result page Focus: clarity, transparency, and product usability. 3️⃣ Integrate with Data / Anti-Cheat Systems Work with data engineers & ML teams Integrate model outputs into serving layer Handle ingestion, validation, deduplication Maintain version control and logging 4️⃣ Prepare for Core Integration Build architecture that can later integrate into QuintAce core Ensure modular, scalable service boundaries Support future multi-platform extension What We’re Looking For Required 5+ years full-stack engineering experience Strong Node.js backend development Strong React / frontend architecture Experience working with data-heavy systems Experience building APIs and dashboards Comfortable working in ambiguous 0→1 environments Strong ownership mindset Preferred Trust & safety / fraud / risk product exposure experience Gaming or fintech background Experience working with ML-driven systems Why This Role Matters This is the first version of a product that makes anti-cheat transparent to players. You’re not building detection models — you’re building the product layer that makes integrity visible, understandable, and actionable. POC → Core Product → Platform Integration.