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Roman Cirier
Open to opportunitiesFreelance Full Stack Developer
Full-stack engineer with 7 years of building and shipping web and mobile products end-to-end in TypeScript.
ChinaFreelance Full Stack Developer at Self Employed
About
Full-stack engineer with 6+ years building and shipping web and mobile products end-to-end in TypeScript across React, React Native, and NestJS. I own architecture from database to UI — leading teams on some engagements and running others solo — and increasingly ship LLM/RAG-backed features (Vertex AI, vector search) in production. After years across varied stacks and domains, I'm now looking to bring my expertise into one team long-term, to grow, invest deeply in a product, and build lasting relationships.
Experience
Freelance Full Stack Developer
Freelance full stack developer working on various projects, including Journey, Bloomflow, Mayoo, Snoop, Kivid, and Class8.
TypeScriptReactReact NativeNestJSPostgreSQLRedisVertex AIGitHub ActionsDockerGraphQLWebSocketsMicroservices
Lead Mobile Developer
Led development and launch of the app to 120k monthly active users, owning feature design and prioritization. Re-architected real-time voice channels from P2P mesh to SFU topology, lifting stable room size past previous ceiling.
React NativeWebRTC
Education
Beijing Jiaotong University
Master of Software Engineering degree from Beijing Jiaotong University, completed as part of a dual-degree program with EPITECH.
EPITECH
Master of Computer Science degree from EPITECH, Paris, completed as part of a dual-degree program with Beijing Jiaotong University.