Upayan Ghosh, in grayscale, looking directly at the reader.

Hey, I’m Upayan.

I’m an Associate Software Engineer at Accenture. Outside work, I build systems like Synapse that report on their own state.

Kolkata, India · open to remote

Status: immediate joiner

… page loads since 2026-08-16

MethodGitHub GraphQL API, contributionsCollection.contributionCalendar.totalContributions for the trailing 365 days at fetch time: commits, issues, pull requests and reviews across public and private repositories, the same total the public profile graph shows with private contributions enabled. Refreshed hourly; private repositories contribute a count only, never a name.Date2026-09-12Sourcegithub.com/UpayanGhosh

contributions, last 12 months, public and private repos

MethodGitHub GraphQL API, contributionsCollection.totalCommitContributions for the trailing 365 days at fetch time: commits to public repositories only, each checkable on the repository itself. Refreshed hourly.Date2026-09-12Sourcegithub.com/UpayanGhosh

commits to public repos, last 12 months

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repositories, 18 public

MethodGitHub GraphQL API, stargazerCount summed over every public repository I own. Refreshed hourly.Date2026-09-12Sourcegithub.com/UpayanGhosh

stars across public repos

At Accenture I keep a production system running, which mostly means finding out why something broke when the symptom and the cause sit in different places. The parts that repeat, I automate: when the same questions kept routing through me, I put a read-only Claude agent over a 2,300-table database so they could be answered without me. Outside work I build that same infrastructure deliberately (retrieval systems, message routers, knowledge graphs), and I publish the numbers, not just the code, because a claim you cannot check is just marketing.

Ask me directly

On /lab there is a chat that answers questions about my work, background, and availability from 72 answers I wrote and sourced myself. Retrieval runs in your browser; on hardware that can carry it, a small language model answers in its own words, grounded in those same answers, and a question I have not written about gets an honest not-on-record reply instead of a guess. Nothing you type is sent anywhere unless you choose to email me the conversation. When you want the human: book a 30-minute call with me, or send the conversation to my inbox from the chat and I reply personally.

Ask the ledger Book a 30-minute call

Selected work

Synapse

A self-hosted AI agent platform running across WhatsApp, Telegram, Discord, and Slack.

Built independently

Methodcount of `def test_` definitions across 260 test files on origin/develop, measured with grep -cE '^\s*(async )?def test_'. origin/develop is 11 commits behind origin/mainDate2026-08-11Sample sizen = 260Sourcegithub.com/UpayanGhosh/Synapse-OSS/tree/develop

tests

Methodgit rev-list --count HEAD on origin/main of a full cloneDate2026-08-11Sourcegithub.com/UpayanGhosh/Synapse-OSS/commits/main

commits

Methodprovider keys registered in _KEY_MAP in workspace/sci_fi_dashboard/llm_router.py: anthropic, openai, gemini, groq, openrouter, mistral, togetherai, xai, cohere, minimax, moonshot, zai, volcengine, huggingface, nvidia_nim, qianfan, deepseek. Routed through litellm.Router with a per-role fallback table; Bedrock, Vertex, Ollama and OAuth paths are additional and not counted hereDate2026-08-11Sourcegithub.com/UpayanGhosh/Synapse-OSS/blob/main/workspace/sci_fi_dashboard/llm_router.py

LLM providers routed

Python
FastAPI
LanceDB
SQLite FTS5
asyncio

tldr skill

Turns any repository into an onboarding site: dependency graphs, directory maps, framework cookbooks.

Built independently

Methodnpm registry trailing-12-month download count for tldr-skill v1.6.0Date2026-08-11Sourceapi.npmjs.org/downloads/point/last-year/tldr-skill

npm downloads, trailing year

Python
Claude API
Cytoscape.js
D3.js

claude-jarvis

A universal intent router for Claude Code, matching fast-path first and falling back to dynamic skill discovery.

Built independently

Methodclaude-jarvis downloads over 2026-04-03 to 2026-05-02, the 30 days following release, from the npm registry daily range API. Peak day 2026-04-06 at 1,222Date2026-08-11Sample sizen = 30Sourceapi.npmjs.org/downloads/range/last-year/claude-jarvis

npm downloads, first 30 days

Methodnpm registry trailing-12-month download count for claude-jarvisDate2026-08-11Sourceapi.npmjs.org/downloads/point/last-year/claude-jarvis

npm downloads, trailing year

Methodnpm registry trailing-30-day download count for claude-jarvis v1.2.12. Manual snapshot. Not fetched at build; refreshed by hand.Date2026-08-11Sourceapi.npmjs.org/downloads/point/last-month/claude-jarvis

npm downloads, trailing 30d

TypeScript
Claude Code Plugin API

Writing

Why Synapse's knowledge graph lives in SQLite, not memory
Synapse's knowledge graph moved from an in-memory NetworkX object to a SQLite-backed schema. What moved, what stayed compatible on purpose, and the benchmark I still owe.
- August 11, 2026
- 5 min read
Classifying failures before deciding how to recover from them
Synapse routes across a wide provider list behind one router. A rate limit, an auth failure, and a context overflow all need a different response, and the honest cost of how it tells them apart.
- August 11, 2026
- 3 min read
Why every message into Synapse waits in a bounded queue first
Four channel adapters, one shared ingestion layer. What FloodGate, dedup, and a capped asyncio queue guarantee under a concurrent burst, and what the evidence for it actually is.
- August 10, 2026
- 3 min read

All writing

Now: 2026-08-10

Rebuilding Synapse’s rerank stage; writing up the retrieval trace format for /lab.

Full log

upayan1231@gmail.com

Hey, I’m Upayan.

Ask me directly

Selected work

Synapse

tldr skill

claude-jarvis

Writing

Why Synapse's knowledge graph lives in SQLite, not memory

Classifying failures before deciding how to recover from them

Why every message into Synapse waits in a bounded queue first

Now: 2026-08-10