Vetted Backend Development Professionals

“Unity developer who has published multiple games (e.g., "Hole people", "beads out") and reports building nearly everything inside the games himself, including gameplay, remote config, and A/B testing. Also built "Age of battles PvP" with backend server, economy, multiplayer, analytics, and blockchain/Web3/NFT functionality, including custom verification logic to mitigate third-party transaction delays. Currently earning about $3,000/month due to covering both backend and Unity/multiplayer responsibilities.”

“Frontend-focused engineer with experience building complex browser-based internal tools for public safety teams, emphasizing role-based usability, reusable components, and multi-system API integration. They also demonstrate practical performance tuning skills in React/TypeScript applications, including reducing unnecessary re-renders and simplifying workflows to improve user efficiency.”

“Early-career full-stack engineer who has not yet shipped a professional customer-facing product but has built sophisticated AI-driven systems in personal/academic work, including a multi-tenant AI knowledge base (async ingestion, pgvector semantic search, SSE real-time updates, knowledge graphs) and an AI-powered code review assistant designed to process thousands of jobs via Redis/BullMQ.”

“Unity developer with several years of experience building and publishing games, including an 8-month largely solo FPS demo featuring physics-heavy interactions and a procedural enemy reaction system blending animation and ragdoll. Has prototyped VR interactions with XR Interaction Toolkit and explored Meta SDK integration for Meta devices, and uses AI assistants to speed up prototyping and performance optimization.”

MARCOS FILHO

Screened

Mid AI/Software Engineer specializing in LLMs, agents, and distributed systems

Recife, Brazil3y exp

“Solo builder focused on backend and AI-driven decision-support products, especially around real estate/tower investment use cases in Dubai and Brazil. Describes hands-on work with PostgreSQL, Redis, crawlers, caching, LLMs, embeddings, and agent-style systems, with an emphasis on shipping end-to-end under ambiguous requirements.”