Backend and systems engineer, 10+ years, mostly fintech/crypto, B2B SaaS, and real-time gaming. I build services and infrastructure where correctness, reliability, and scale matter more than surface area: API design, data modelling, workflow orchestration, and the observability to keep it all honest.

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• Data & integrations: parsing and reconciling on-chain data across several blockchains, multi-tenant PostgreSQL schema design, full-text search, and Excel/S3 ingestion pipelines.
• Fault-tolerant workflows: Temporal-orchestrated, idempotent sync jobs with reconciliation and validation instead of best-effort scripts.
• Real-time systems: poker game and tournament engines handling thousands of concurrent players with event-driven, low-latency backends.
• Platform work: migrations (PHP to Node.js, services to Django, serverless booking engines), RBAC and identity, and observability with OpenTelemetry.

Full write-ups, including engineering decisions on each, are on the Experience page.

• tocli: a terminal BitTorrent client with a process-per-torrent architecture, scriptable one-shot commands, and a live interactive TUI when you leave arguments off.
• goroomlib: a thread-safe Go library providing a reusable Room-User architecture for real-time systems like chat and multiplayer games.
• wazirx-connector-go / wazirx-connector-java: unofficial REST/WebSocket clients for the WazirX crypto exchange, both acknowledged by WazirX's co-founder.
• tts-study-assistant: a Chrome extension for saving and listening to notes from any webpage, backed by a Go/Fiber API.
• git-why: a Claude Code skill that writes the design reasoning behind non-trivial commits to git notes, so the "why" survives after the chat that produced it is gone.
• video-translator + OpenVoice fork: a local AI dubbing pipeline that transcribes, translates, and re-synthesizes speech in a target language, patched to clone short clips on CPU.

More on the Projects page.

• Added missing stats/metrics fields to the official Meilisearch Go and Java clients, closing issues the maintainers had already filed. Merged.
• Audited WazirX's official Postman API collection against its live spec and fixed real drift, then turned the process into a reusable Claude Code Skill for the maintainers.
• Added missing endpoints to WazirX's official Python connector.
• An early DuckDuckGo Instant Answer contribution, merged back in 2015.

Full list, including what's still open, on the Open Source page.

Go and systems internals, through small hobby projects: a concurrency-safe room/user library, exchange API connectors, and a handful of CLI and media tools.

Go · TypeScript · Python · Java · Node.js/NestJS · PostgreSQL · Redis · Temporal · AWS · Docker · Kubernetes · OpenTelemetry

More detail, including how each project and role broke down technically, is at prateeksharma.me.