SDET Intern · HealthEdge · Bengaluru SRM Institute · CSE (Data Science) '27
Available · Full-time roles, 2027
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Acquiring signal…

Paritosh Singh, software engineer (backend, systems and AI/ML): Systems built to be measured.

Backend & systems engineer and SDET. I build software that holds up under load, from a C++ server on raw epoll sockets to AI agents that can't go rogue, and I write the test harness that proves it on every run.

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Currently SDET Intern · HealthEdge

Test automation and AI-assisted QA tooling. Bengaluru · Jun 2026 to present.

Profile01 · OPERATOR

I work at the layers most people abstract away — and I prove what I build actually works.

CS + Data Science at SRM Institute (CGPA 8.78), now an SDET Intern at HealthEdge in Bengaluru. I write production code in C++, Python and TypeScript, from a Redis-compatible server on a hand-rolled epoll loop to payment and CI agents whose every action is audited and measured. I ship fixes upstream to open source and build the test harness that keeps all of it honest. The thread across everything: numbers I can point to, not adjectives.

2.7M+GET/sec pipelined · mini-redis

02Upstream PRs merged · open source

339pytest tests · Agent Replay

93.8%Interval coverage · Revenant

Selected builds02 · CHANNELS

RecCH.01 / 0500:00

P/01

P/01 · Systems engineering

mini-redis ↗

A Redis-compatible server in 594 lines of C++ on a hand-rolled epoll loop, driven by stock redis-cli and redis-benchmark.

A Redis-compatible server in 594 lines of C++: a single-threaded, non-blocking epoll loop over raw POSIX sockets, and a RESP parser that buffers partial frames so pipelined commands survive split TCP reads. Driven by stock redis-cli and redis-benchmark.

C++epollPOSIX socketsRESPpub/sub

2.7M+GET / sec · 128-deep pipeline

150K+ ops/s · 50 clients · 1 core18 commandspub/sub 1,000 / 1,000

P/02

P/02 · Agents · Causal measurement

Revenant ↗

A payment-recovery agent that measures the lift it caused: randomised holdout, bootstrap intervals, tamper-proof audit log.

A payment-recovery agent that reports the lift it caused, not gross recovery: a stratified 50/50 holdout, bootstrap intervals, and a calibration harness that caught its own interval being 38% too wide. The LLM can only name a failure class; trusted code picks the retry. Built for the Razorpay AI Buildathon.

PythonFastAPITypeScriptPostgreSQLPlaywright

93.8%Coverage of the true lift · 2,000 runs

Hash-chained audit logPostgres refuses editsCircuit breaker

P/03

P/03 · Agent CI · AWS

Agent Replay ↗

Five recorded runs become a YAML contract; CI fails on the exact step a later run diverges. Set logic, not an LLM.

Records an agent five times and derives a YAML contract of the tool calls it must make and their order. Later runs are judged by set logic, not an LLM, and CI fails on the exact step that diverged. Built at the WeMakeDevs × AWS hackathon.

AWS BedrockStrands AgentsPythonLambdaDynamoDB

339pytest tests · reproducible verdicts

GitHub Actions gateOIDC · 0 long-lived keysLambda · DynamoDB · S3

P/04

P/04 · ML · Full stack · Published

Vigil ↗

Forecasts 7 hazard types across 25 cities with XGBoost + LightGBM, explained with SHAP. Paper accepted in ISJEM.

Forecasts seven natural-hazard types across 25 Indian cities with XGBoost and LightGBM ensembles, explained with SHAP and served through FastAPI and PostgreSQL. The paper is accepted in ISJEM.

XGBoostLightGBMSHAPFastAPIReact

0.876ROC AUC · heatwave

AUC 0.74 to 0.88Cyclone 0.8527 hazards · 25 cities

P/05

P/05 · Full stack · Realtime

TeamPulse ↗

A Slack-style platform with WebRTC calls, three access tiers and a Bull + Redis job queue. Live on Vercel.

A Slack-style platform: channels, DMs, typing presence and WebRTC calls on Express and MongoDB. Three access tiers behind JWT and Google OAuth, slow work moved onto a Bull + Redis queue. Tested with Jest, deployed on Vercel and Railway.

Socket.IONode.jsMongoDBRedisWebRTC

73REST endpoints

15 Socket.IO handlersAdmin · Member · GuestLive on Vercel

Open source03 · UPSTREAM

Fixes merged into other people's codebases, with the tests to prove them.

MapLibre · Rust · vector tile server · 3.9K★

Martin ↗

Fixed a redirect that ignored --route-prefix for .pbf tile requests. Merged with a regression test and shipped in release v1.10.1.

MergedPR #2599

render-engine · Python · static site generator CLI

render-engine-cli ↗

Fixed broken sitemap URLs when serving sites locally. Merged after two rounds of maintainer code review.

MergedPR #40

Method04 · OPERATING PRINCIPLES

01 / Measure

Measure, don't guess.

Throughput is a number I benchmark and reproduce on demand. Impact is measured against a randomised holdout, never reported as a gross figure that counts wins that would have happened anyway.

02 / Prove

Tests are the spec.

Regression suites, API contracts, and for agents a recorded behavioural contract, so "it works" is something I prove on every run and every pull request, not something I hope for.

03 / Ground

Ground it, or reject it.

A model never gets the final word. Its output is grounded in real code or rejected, and in Revenant trusted code, not the LLM, decides whether money moves.

Stack05 · INSTRUMENTS

Build 12

Systems & services

C++
Python
TypeScript
Java
SQL
Rust
Node.js
FastAPI
PostgreSQL
Redis
MongoDB
Linux

Reason 07

Generative AI

RAG
LLM agents
Multi-agent workflows
MCP servers
AWS Bedrock
Strands Agents
Prompt engineering

Prove 08

Quality & SDET

Katalon
Playwright
Selenium
pytest
Jest
JUnit
Postman
Groovy

Ship 07

Interfaces & infra

React
Socket.IO
WebRTC
OAuth 2.0 · JWT
Docker
GitHub Actions
AWS Lambda · DynamoDB · S3

Learn 06

Machine learning

scikit-learn
XGBoost
LightGBM
SHAP
pandas
NLP

Record06 · LOG

2026 —SDET Intern — HealthEdgeBengaluru · test automation

2026Paper accepted — Vigil, in ISJEMPublication · multi-hazard prediction

2026Merged upstream — MapLibre MartinRust · shipped in v1.10.1

2026Razorpay AI Buildathon — RevenantAI revenue recovery track

2026WeMakeDevs × AWS hackathon — Agent ReplayBedrock · Strands Agents

2026SAP Certified Back-End Developer — ABAP CloudSAP · valid to Apr 2027

2024–25Associate Corporate Lead — SRMKZILLASRMIST's Mozilla club · sponsorships & events

2024Machine Learning — NPTEL, Elite gradeIIT Madras

20242nd Place — Capture the FlagSRM Institute

ArchiveFake News Radar ↗TF-IDF classifier · ~94% on WELFake · live

Open channel07 · CONTACT

Let's build something that holds up.

End of stream · Signal clear · 2027