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Popular mid-level fullstack title in metro with 4–6yr band and broad skillset increases competition.
Real-time streaming and low-latency expertise raise domain importance, though core fullstack skills remain transferable.
Explicit 4–6 year requirement plus specific React/Java and system-design expectations makes filtering moderately strict.
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Own feature development end-to-end including design, coding (React frontend, Java backend), deployment, and 24/7 production reliability.
Design and implement scalable, low-latency real-time systems handling thousands of concurrent users with WebSocket and pub/sub patterns.
Deliver high-quality, performant React frontends with real-time video and streaming, while shaping architecture and enforcing codebase integrity.
4 to 6 years of professional experience as a full-stack or specialized engineer with exposure to React and Java (Spring Boot).
Deep expertise in either React or Java (Spring Boot) and solid working knowledge of the other.
Strong frontend fundamentals including HTML, CSS, JavaScript with understanding of browser internals.
Proficiency with relational databases (Postgres or MySQL) including query optimization and indexing.
Experienced full-stack engineer comfortable owning full lifecycle from design to 3 AM incident response in high-concurrency environments.
Skilled in system design for distributed and real-time systems, understanding tradeoffs in database and concurrency management.
Hands-on with AI-assisted coding tools (Cursor, Claude Code, Copilot) with ability to audit and correct AI-generated code and lead architecture decisions.