Pulse
Real-Time API Uptime & Incident Monitoring
Available for new roles
Supratim
Sarkar
Software Engineer · Distributed Systems · Full-Stack TypeScript · AI
M.Sc. Software Engineering (VU Amsterdam × UvA). AWS SAA-C03 certified. Six deployed systems, two merged pull requests into Tiptap — all of it public.
About
Building at the
frontier.
I like the problems that only show up once something is actually running — two workers racing for the same job, a process dying mid-step, a queue that has to survive a restart. So I build them from the primitives: an atomic findOneAndUpdate in Mongo, a SKIP LOCKED claim in Postgres, and a chaos test to prove it holds. Everything on this page is deployed and open source — nothing here is a screenshot of a thing that used to work.
I'm a software engineer with an M.Sc. in Software Engineering from VU Amsterdam & University of Amsterdam (Joint Degree) and an AWS Solutions Architect – Associate certification.
I interned at Mendix (Siemens), shipping production React/TypeScript into the drag-and-drop microflow editor used by thousands of enterprise developers, migrating legacy JavaScript to TypeScript at ~85% test coverage and full WCAG 2.1 compliance. Since then I've designed, built, and deployed six systems solo — monitoring, load verification, durable job orchestration, and AI tooling.
I've had two pull requests merged into Tiptap (37k stars), the rich-text editor framework — both bug fixes at the ProseMirror and markdown-tokenizer level, reviewed and merged by the maintainers.
- Distributed job schedulers built on database primitives, not queue libraries
- Crash-safety proven by chaos tests, not asserted in a README
- Streaming AI pipelines and tool-calling agents over ReadableStream
- Progressive enhancement that still works with JavaScript disabled
Open-Source Contributions
Tiptap★ 37k
- PR #7977—Fixed a Link-extension crash (“No value supplied for attribute class”) by coercing an undefined HTMLAttributes field to null in addAttributes(). Merged.
- PR #7998—Root-caused a markdown-parser bug where indented ordered-list items silently lost bold and italic formatting — a hardcoded base indent made the tokenizer bail out. Fixed by deriving it from the list's own first item. Merged.
Technical Skills
Languages
TypeScriptJavaScript (ES6+)SQLHTML5CSS3
Frontend
React 19Next.jsReact Router v7Redux ToolkitRTK QueryTailwind CSSFramer MotionZod
Backend & APIs
Node.jsExpressRESTGraphQLWebSocketsSocket.ioworker_threadsPrismaDrizzle ORM
Databases
PostgreSQLMongoDBIndexedDB
AI Engineering
OpenAI SDK / OpenRouterClaude APIGemini APIResponse streamingStructured JSON generation
Cloud & DevOps
AWS (SAA-C03)DockerGitHub ActionsRenderFly.ioVercelStripe
Testing
JestReact Testing LibraryChaos / fault-injection testingTDD
Work
Independent
Engineering
Six deployed systems, built solo end to end — architecture, infrastructure, and deployment. Every one is live and open source; click through and check.
2026
Assay
Verified Proof-of-Skill for Deployed Projects
OSS Finder
Open-Source Contribution Discovery
Durable Agent Engine
Fault-Tolerant LLM Agent Orchestrator
PantryChef
AI Kitchen Assistant
FounderOS
AI Chief of Staff for Startup Founders
Contact
Let's work
together.
I'm open to full-time roles, contract work, and interesting collaborations. If you're building something ambitious, I'd love to hear about it.