Backend Engineer | Go, Node.js & Redis | Distributed Systems, Concurrent APIs, Observability

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Soham Sarkar  • Peerlist

Built an operation-based CRDT collaboration engine for real-time collaborative editing with deterministic conflict resolution and efficient text indexing using skip lists. Designed a modular architecture separating CRDT core logic, synchronization, transport, and React bindings into reusable packages. Implemented transport-agnostic replica synchronization using state vectors to support low-latency collaborative state reconciliation across distributed clients.

Relay - Collaborative Library (MVP)

Developed a browser extension that enables users to search across multiple engines and interact with various AI chatbots simultaneously, eliminating the need to switch tabs.Enhanced productivity by allowing concurrent access to platforms like Google, Bing, Reddit, ChatGPT, Claude, and Gemini, resulting in a significant reduction in research time. Implemented customizable multi-panel views (dual, triple, and quadruple) to facilitate side-by-side comparisons of search results and AI responses.

Multi Search & Multi AI – Chrome Extension

ZenFlow is a Chrome extension that helps you focus on your work by providing a minimalistic and calming environment on new tabs.

ZenFlow

Built a Layer-7 HTTP load balancer in Go with round-robin routing, active health checks, retry handling, and backend failover support. Implemented worker-pool based concurrency control, graceful shutdown, and hot backend reloads without dropping in-flight requests. Stress-tested the system with 8.2M+ requests using k6 under burst traffic and backend failure scenarios, investigating bottlenecks related to connection reuse, port exhaustion, and throughput stability.