Soubhik Halder
Full Stack AI Engineer·
Available for work
I build systems, not just software.
Experience
Show all →Tech Stack
(hover to play)
- JavaScript
- TypeScript
- SQL
- React
- Next.js
- TailwindCSS
- Node.js
- Express
- Elysia
- PostgreSQL
- Redis
- BullMQ
- OpenAI SDK
- RAG
- Pinecone
- Qdrant
- AI Agents
- Git
- GitHub
- Vercel
- Postman
Projects
BunplexityOpen source
An open-source AI search engine inspired by Perplexity.
- Next.js
- Bun
- OpenAI
- Tavily
- Pinecone
- Redis
- PostgreSQL
OpenRouterWorking
A self-hosted, OpenRouter-style LLM gateway.
- Express
- Drizzle ORM
- PostgreSQL
- Redis
- BullMQ
- Turborepo
MarketSageLive
A multi-agent finance assistant for a new generation.
- Elysia.js
- Next.js
- OpenAI Agents SDK
- Qdrant
- PostgreSQL
MailformeeLive
An email assistant that lives in your browser.
- Plasmo
- React
- Elysia.js
- AI Agent SDK
- Gmail OAuth 2.0
Contributions
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591 contributions in the last yearLessMore
Blog
Show all →- Building Voice Agents at ScaleJuly 22, 2026
Chained pipelines vs speech-to-speech, triage architectures, and parallel tool calls — why latency and orchestration decide voice AI, not the model.
AI · 7 min - Building AI Agents That Actually LearnJuly 21, 2026
ReAct, plan-and-execute, and reflection-based memory — three agent architectures, and why the third one keeps improving after every interaction.
AI · 9 min
Let’s build something.
Full-stack, AI agents or automation — I usually reply within a day.