Language
5
Python 
Rust 
Go 
TypeScript 
SQL 
Current focus
Swadhin Biswas
Open to mid-level data and backend roles Dhaka, Bangladesh · Available internationally · Asia/Dhaka
Data and backend engineer. Co-founded Boringrats (acquired). Currently building OpencodeHub, OpenDPP, RAVEN, and JUSTAPI.
- Users reached
- 1M+
- On Boringrats before acquisition
- Acquisition
- 2025
- Boringrats, November 2025
- Production work
- 3+ yrs
- Data pipelines and ML infrastructure
current_focus
Data engineering, MLOps, AI systems, and open source.
currently_building
OpencodeHub, an open-source developer platform.
seeking
Relocation to Germany, the Netherlands, or Austria.
Selected work
Projects 7
EU Air Traffic
Live and historical European airspace: ADS-B positions, OpenSky movements, schedules and weather stream through Kafka into a Bronze and Silver lake, a dbt warehouse on DuckDB and a read-only serving copy behind a public dashboard.
OpenGrammar
Privacy-first, self-hosted writing assistant: a browser extension with a 156,000-word offline engine and more than 40 rule patterns, an AI router that only sees what local rules miss, and a Hono backend that deploys to five runtimes.
AegisVision
A multi-camera surveillance and behavioral monitoring platform that runs on ordinary hardware. It does real-time face recognition with anti-spoofing liveness checks, tracks occupancy and gate traffic, remembers where tracked assets were last seen, sends alerts, and includes an AI copilot that answers questions about the live database in plain English.
Aurora
A modular reasoning architecture that knows when to abstain: six stages with an explicit uncertainty channel, a deterministic DAG router, stateless experts and a verification anchor. GSM8K accuracy 47.2% to 55.6% while confidently wrong answers drop from 19.8% to 2.9%.
EuroStream
GDPR-native streaming and medallion lakehouse for European commerce: real-time fraud scoring, DuckDB and Turso serving, and a six-layer Article 17 erasure cascade with a verifiable audit trail.
OpenCodeHub
OpenCodeHub is a self-hosted, open-source Git platform meant as an alternative to GitHub and GitLab. Git hosting, pull requests, stacked PRs, merge queues, CI/CD, AI-assisted code review, issues, organizations, webhooks, REST and GraphQL APIs, and a CLI all live in one deployable system. It's built as a modular monolith with optional background workers and CI runners, so it runs on one machine and can still scale horizontally. Git works over HTTP Smart Protocol and SSH. Storage is pluggable (local or S3-compatible), several database backends are supported, CI runs in Docker containers, queues use Redis, and code review can talk to multiple AI providers.
Work history
Experience 3
-
Founder · OpencodeHub
A free, self-hosted alternative to GitHub with SSH access, CI pipelines, and AI-assisted code review, plus a place to discover and share projects. Users run it on their own machines, so their code never touches our servers.
-
Co-Founder & Lead Data/Backend Engineer · BoringRats (Acquired)
Co-founded BoringRats and grew it to 1M+ active users. Built the real-time event ingestion pipelines, the analytics warehouse, and the MLOps workflows, along with the backend systems and infrastructure the product ran on. The company was acquired in November 2025.
-
Full Stack Developer · Freelance
Built 8+ full-stack projects for SaaS and e-commerce clients in the US and UK. Cut page load times by 40% through React optimization, and shipped Django and PostgreSQL REST APIs handling 10K+ requests a day.
Capabilities
Stack 67
39 core · 28 working
Python Rust Go TypeScript SQL Framework
7
Django 
FastAPI 
Vue.js 
Hono 
Elysia 
Encore.ts 
Node.js Data Engineering
22
Apache Airflow 
Apache Spark 
dbt 
Kafka 
AWS Glue 
AWS Redshift 
AWS Athena 
Azure Data Factory 
Google Dataflow 
Google Dataproc 
Google Cloud Composer 
Apache NiFi 
Apache Cassandra 
Apache Druid 
Apache Superset 
Metabase 
MinIO 
Airbyte 
Dagster 
Confluent 
Apache Flink 
Prefect What people say
"Deeply curious, very sharp in technical skills, and always eager to dive into complex problems."
"Hardworking and dependable — learns quickly, takes responsibility seriously, and always maintains a positive attitude."
"Swadhin's ability to architect scalable data systems was instrumental in scaling BoringRats to 1M+ users. His technical leadership and hands-on approach to infrastructure were key factors in our successful acquisition."
Recent writing
Posts show up here once they're published on the blog.
Makerspace & visuals
Explore & creative craft
Field photography Visual notes
Street shots, landscapes, and night skies, with the camera settings attached.
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Padma River · Moonlit Night View gallery →
The workshop Hardware & IoT
A custom keyboard, a silent 3D-printed homelab cluster, and ESP32 sensors, with parts lists.
Soldering · CAD · Firmware Explore builds →
FAQ
Common questions
What roles is Swadhin open to?
Mid-level data engineering and backend engineering roles, focused on production data infrastructure, MLOps, and distributed systems.Is Swadhin available to relocate to the EU?
Yes. He's looking to relocate to Germany, the Netherlands, or Austria, and is open to fully remote roles across the EU.What is the notice period?
30 days.Does Swadhin need visa sponsorship?
Yes. Relocating to the EU would require visa sponsorship from the employer.
Get in touch
Let's build something useful
Email is the best way to reach me. I'm interested in backend systems, data engineering, AI product work, research tooling, and technical collaborations that are worth the time.
- Work authorization
- Open to relocation; requires work visa sponsorship in the EU
- Relocation
- Germany · Netherlands · Austria · Remote EU
- Notice period
- 30 days
- Languages
- English (Fluent) · Bengali (Native) · German (Learning) · Hindi (Working)