Platform & Systems Engineer Portfolio | Email
Status: Open for SDE roles & specialized freelance contracts.
Writing working code is the floor. Surviving production is the job.
I engineer high-throughput backend services and distributed systems. When your architecture bottlenecks, your database connections exhaust, or your polling layers choke under traffic spikes, I fix it. I specialize in replacing heavy HTTP polling with WebSockets/SSE, decoupling blocking workloads via task queues, and ensuring exact state synchronization in multi-tenant environments.
- Asynchronous Execution (Emergence Mobility): Architected distributed queues using BullMQ and Valkey to process heavy async jobs. Replaced legacy polling with Server-Sent Events (SSE). Result: Eliminated server ingress overhead and prevented event-loop blocking under high concurrent user load.
- Distributed State Synchronization (LYNER): Engineered a real-time collaboration engine using WebSockets and Fastify. Implemented CRDTs (Conflict-free Replicated Data Types) backed by an append-only PostgreSQL event log to guarantee global consistency across concurrent client edits.
- Client-Side Fault Tolerance (FOCUSKARO): Built a background processing platform that survives severe browser-side throttling using Web Workers. Engineered a lightweight SSE telemetry system with heartbeat failure detection to decouple the backend from dead client states.
- Concurrency Control (Legal Care): Profiled and patched critical thread and async race conditions in distributed Node.js authorization flows, stabilizing session state reliability.
I take on fixed-scope infrastructure contracts. I do not bill for hours; I bill for solved architectural failures.
- Legacy Migrations: Converting standard REST/Polling architectures to high-concurrency WebSocket/SSE streams.
- Performance Tuning: Optimizing Node.js event-loop blocks, PostgreSQL query plans, and Redis caching tiers.
- System Decoupling: Implementing BullMQ/Valkey queue systems to offload heavy synchronous tasks via Pub/Sub patterns.
