SHIP · ITERATE · SHIP · ITERATE · SHIP
handle: @bytedexrole: software developerxp: 3+ yrsstack: rust · react · haskell · kafka

hey, i'marnabdutta

$ i build developer_tools  ·  full-stack engineer obsessed with solving real-world problems.

view_work→get_in_touch→press ~ for terminal
scroll · 01 / 06
// 02cp_profile.jsoncurl /handles --all

$ grinding algorithms across platforms since 2021. handles below are live — rating, recent contests, and problem counts pulled from each profile.

expert
CF
codeforceslive
@slow_codex
expert1742
1742
max 1801
Δ +24 last contest
solved
820
contests
62
streak
14d
knight
LC
leetcodelive
@bytedex
knight1802
1802
top 7.8%
Δ -20 last contest
solved
738
contests
34
top
7.8%
5★
CC
codecheflive
@slow_codex
5-star2014
2014
max 2087
Δ +33 last contest
solved
410
contests
38
div
div_2
total solved
2,810+
contests played
170+
peak streak
142 days
favorite topic
graphs
// 03about.mdconst me = {…}

Software developer, 3+ years in. I write code that has to survive production traffic, junior engineers, and my own future self.

I work across the stack — from low-level systems to pixel-perfect interfaces — and I care about the small details: cold-start times, error budgets, and the way a button feels under your finger.

Currently obsessed with developer tooling, real-time systems, and making the boring parts of software delightful.

— signed, // last_pushed: 2 hours ago
~/whoami.json
// generated: now
$ cat profile.json
{
"alias": "@dev",
"focus": ["backend", "infra", "dx"],
"languages": ["Go", "TypeScript", "Python", "Rust"],
"runtimes": ["Node", "Bun", "Deno"],
"clouds": ["AWS", "GCP", "Fly.io"],
"databases": ["Postgres", "Redis", "Clickhouse"],
"currently_reading": "Designing Data-Intensive Apps",
"open_to_work": true
}
$ _
// 04experience.timelinescroll →
2023 — present
Software Engineer
// Juspay (Nammayatri)
  • Designed and built Namma-DSL, a code-generation platform using Template Haskell that auto-generates API definitions, type signatures, and service endpoints from YAML specs — eliminating 50,000+ lines of handwritten code and cutting new-microservice onboarding time by 40%.
  • Architected a multi-vendor emergency dispatch system integrating 3 government APIs (ERSS/C-DAC, Gujarat 112) behind a plugin-based vendor abstraction, making new-vendor onboarding a single-file change with zero edits to the core orchestration service.
  • Built a 2-second GPS pulse for real-time SOS location tracking, enabling location sharing with emergency contacts and police dispatch across multiple states.
  • Implemented a scalable Redis-backed monthly driver leaderboard with dual-key caching and time-partitioned keys, cutting read latency 65% under heavy traffic while preventing unbounded memory growth.
  • Optimized mobile SDK event logging in native Android (Java) with client-side batching and async routing to Apache Kafka, reducing network calls 30–40% while enabling low-latency telemetry ingestion.
  • Led a regional team of 6 engineers and mentored 3 interns on Yatri Sathi (West Bengal govt ride-hailing app); built agentic CI/CD workflows (Vitest + Playwright, AI test scaffolders, MCP servers) with Claude as a coding agent.
HaskellRustJavaReactRedisKafkaKubernetes
2023
Solutions Engineer (Contract)
// Yellow.ai
  • Designed and deployed 10+ AI-powered chatbot solutions in TypeScript for 5+ enterprise clients across the APAC region.
  • Automated duplicate LLM intent removal using Puppeteer scripts, reducing classification conflicts from 98% to 24% and improving model response accuracy.
  • Contributed to refactoring and migrating bots from app.yellow.ai to cloud.yellow.ai.
TypeScriptPuppeteerLLMNode
2023
Application Developer
// IBM
  • Built and maintained enterprise application features within IBM's application development practice.
  • Collaborated with cross-functional teams on client-facing software delivery.
JavaREST APIs
2022
Technical Content Writer
// Scaler
  • Authored technical content and tutorials on data structures, algorithms, and core CS topics for Scaler's learning platform.
DSAC++Tech Writing
2021
Technical Content Engineer
// GeeksforGeeks
  • Created and reviewed technical articles and problem solutions across DSA and programming topics for GeeksforGeeks' developer audience.
DSAC++Tech Writing
2026 — ?
your team, maybe
// let's build something
  • Available Q3 2026.
  • Remote or Bengaluru. Full-time.
say_hi →
// 05projects.dirls -la ./projects
001 / featured
2023 — 25platform · code-gen
Namma-DSL
A code-generation platform built with Template Haskell that auto-generates API definitions, type signatures, and service endpoints from YAML specs — turning handwritten boilerplate into compiled Haskell.
50k+ loc generated40% faster onboardingprod
haskelltemplate-haskellyaml
view ↗
002
2024distributed · safety-critical
emergency-dispatch
Multi-vendor emergency dispatch system integrating 3 government APIs (ERSS/C-DAC, Gujarat 112) behind a plugin-based vendor abstraction — new vendors onboard as a single-file change with zero edits to the core orchestration service.
3 govt APIsmulti-state
haskellrestmicroservices
view ↗
003
2024backend · caching
driver-leaderboard
Scalable Redis-backed monthly driver leaderboard using dual-key caching and time-partitioned keys — bounding memory growth while staying fast under heavy traffic.
65% latency ↓
redishaskellkafka
view ↗
004
2024realtime · gps
wheres-my-bus
Real-time bus tracking with automated trip detection from sustained GPS movement, route adherence, and direction analysis — replacing manual fleet operations and cutting false-start incidents.
50% fewer false-starts
haskellgpsrealtime
view ↗
005
2025ai · devtools
agentic-ci
End-to-end GitHub Actions CI pipeline (Vitest + Playwright) for a React dashboard, with AI-powered test scaffolders and MCP servers (Jenkins, Playwright, Figma) — orchestrating multi-step agentic workflows across the SDLC with Claude as a coding agent.
claude codemcpplaywrightvitest
view ↗
006
2025web · personal site
bytedex.github.io
This portfolio — built with Next.js 15, React 19, and TypeScript, statically exported to GitHub Pages. Framer Motion scroll choreography, a hidden terminal (press ~), and a Konami-code easter egg.
live
next.jsreacttypescriptframer-motion
view ↗
// 06open_source.activitygit log --all
0
contributions / yr
0
commits
0
code reviews
LIVEjust pushed: initial commit→ bytedex/bytedex.github.io · 4m ago
// 07wins.logcat ./trophies/*
[001]
2023
LeetCode — 600+ Problems, 1800+ Rating
Solved 600+ problems on LeetCode with a contest rating of 1800+.
[002]
2023
Codeforces Expert / CodeChef 5 Star
Highest rating of 1622 (Expert) on Codeforces and 2045 (5 Star) on CodeChef.
[003]
2022
CodeIndiaCode — Global Rank 172 / 30k+
Ranked 172 globally among 30,000+ participants in CodeIndiaCode by GeeksForGeeks.
[004]
2022
Google Kickstart Round D — Rank 1468 / 15k+
Ranked 1468 among 15,000+ participants in Google Kickstart Round D.
[005]
2023
2000+ Competitive Programming Problems
Solved 2000+ coding problems across multiple online platforms in C++.
[006]
2019
Gold Medal — International Olympiad of Mathematics
State Rank 1 in Regionals and National Rank 14 in Nationals at iOM.
// 08contact.exec./run --hire-me

have an idea?
let's ship it.

github/bytedexslow-codex.github.io
portfolio.term · type 'help'
$