ASAtul Sharma
Say hello ↗

Trading systems, backend & ML / India

Building systems.
Owning the outcome.

I’m Atul Sharma. I build low-latency trading infrastructure, backend services, ML systems, and LLM agents. I lead teams from architecture through production.

  • 2× founding engineerAlgoTest · The Streamliners
The journey ↓Explore my work ↗Say hello ↗
Atul Sharma smiling outdoorsBeyond the keyboardA little more about me

01 / Experience

From first product to production scale.

I’ve built products as a founding engineer and worked on trading infrastructure, ML systems, backend platforms, and LLM agents. The work spans architecture, team leadership, and keeping systems running in production.

Feb 2025 – PresentAlgoTestY CombinatorS22Founding EngineerQuantitative trading infrastructure and LLM agent workflows.See moreSee less

What I did

  • Lead engineering across signals, distributed backtesting, and trade execution, building systems that let traders research, test, and run custom strategies over years of derivatives data and billions of daily market events.
  • Build low-latency C++ market-data pipelines, real-time signal processing, and 24/7 execution systems, balancing latency, throughput, data correctness, and recoverability.
  • Own architecture, delivery, and production reliability across the Execution and Signals teams, improving fault isolation, recovery, debugging, and performance as the platform scales.
  • Worked on LLM agents that operate the website, with human review at multiple stages, an agent harness for workflow orchestration, and Model Context Protocol (MCP) tools to access platform data.

Tech stack

C++PythonOpenOnloadUDP multicastPolarsNumPyLokiLLM agentsAgent harnessMCP
Jan 2024 – Jan 2025HackerRankY CombinatorS11Software EngineerML systems and backend platforms for assessment integrity.See moreSee less

What I did

  • Worked on the Integrity Team, building ML-powered assessment systems spanning plagiarism detection for LLM-generated code, webcam proctoring, and liveness detection.
  • Architected a PII-compliant identity verification system and its backend services, designing privacy and security boundaries around candidate identity data.
  • Improved ML plagiarism pipelines and Elasticsearch data reliability to support production assessments at scale.
  • Spearheaded engineering efforts for bias audits on HackerRank’s automated employment decision tools (AEDT).

Tech stack

Machine learningOptunaElasticsearchPythonRuby on RailsAWS
Jun 2021 – Dec 2023The StreamlinersFounding EngineerLocatIN, Karobar Easy, and MVPs for early-stage startups.See moreSee less

What I did

  • Built and scaled LocatIN, an indoor maps and navigation product that helps people find their way through large infrastructure facilities.
  • Led development of Karobar Easy, a comprehensive business management solution for small and medium-sized enterprises.
  • Delivered MVP prototypes for early-stage startups, helping them validate ideas and accelerate growth.

Tech stack

Android SDKKotlinJavaNode.jsMongoDBFirebase

02 / Featured projects

A few things I’ve built.

All projects ↗

1 / 5 · PageSift

03 / Writing

Learning, in public.

All writing ↗
Substack / 28 Sept 2025

From One Redis to Many: Understanding Hash Slots, Virtual Nodes, and Hot Keys

Let's understand the journey from single instance to distributed instances for redis and the concepts that help us.

Medium / 1 Nov 2023

Software Engineering Interview Experience with Harman International

We shall be discussing my complete interview experience with Harman for the role of Associate Software Engineer.Harman International is an American audio electronics company (an independent subsidiary of Samsung), that markets its products

04 / Life

Beyond the keyboard.

A few observations, things I’m learning, and moments from outside the workday.

A little more about me ↗