after hoursVANSH PRATAP SINGHSay hello
SOFTWARE ENGINEER

Projects.
Notes.

VPS / AFTER HOURS
V.

Vansh Pratap Singh

Backend engineer · Go, Java, Python & Rust

Pune, India · @vanshpratapsingh
A little about me

About me.
Backend engineer.

I’m Vansh, a backend engineer based in Pune.

I have four years of experience building distributed systems and AI developer tools in Go, Java, Python, and Rust. At Bito, I build backend services for AI Architect, which indexes codebases and provides context to coding agents over MCP.

Before Bito, I worked at Adda247 on live-class features for 50,000 concurrent users, API performance, and course search. I also released Stimulus, a strength-training app, and built Clerva AI, an interview preparation platform.

Outside of that, I’m usually on a football pitch, following combat sports, listening to music, or hanging out with dogs and cats.

View my résumé
01 / Experience

Work experience.

Oct 2024 — PresentPune, India (Remote)

Bito

CURRENT

Software Development Engineer II

Backend services for AI Architect and the AI Code Review Agent.

  • Built services that index customer codebases into a cross-repository knowledge graph and serve it to coding agents over MCP. Enterprise users include Swiggy, PubMatic, and Kredivo.
  • Reduced LLM operating costs by up to 60% through request batching, changes to frequently used code paths, and lower-cost models, with no measurable loss in output quality.
  • Built a CI regression suite that replays pull requests through the code review agent and checks its findings. It replaced manual QA and cut release cycle time by 20%.
  • Fixed production bottlenecks in the code review pipeline and compared competing agents to help guide product decisions.
  • Won the 2025 company hackathon for the evaluation suite, which was adopted internally.
GoPythonMCPLLMsPrompt EngineeringAWSDockerCI/CDSQLGitLinux
Jul 2022 — Oct 2024Gurugram, India

Adda247

Software Development Engineer II

Promoted from SDE Intern (Jul 2022) to SDE I (Jul 2023) and SDE II (Apr 2024).

  • Built live-class polls, chat, leaderboards, hand-raise, and doubt resolution for 50K concurrent users at 2,000 messages per second. The platform drove 18% conversion from YouTube and a 17% increase in engagement.
  • Brought a contractor-run microservice in-house and redesigned its APIs. Request coalescing reduced server and database load by 40% during peak class hours.
  • Fixed a JVM bottleneck, removing CPU spikes and increasing microservice throughput by 4×.
  • Built search, popular-course, and faceted-filter APIs with Elasticsearch and Redis for the paid content platform.
  • Received the Byomkesh Bakshi Award in 2024 for technical contributions and delivery speed.
JavaSpring BootGoLuaKafkaRedisElasticsearchMongoDBSQLDockerKibanaAWSLinux
Nov 2021 — May 2022Remote

Samsung R&D Institute India

Research Intern

Research into energy consumption in 5G radio access networks.

  • Built ns-3 simulations in C++ to model 5G RAN energy use across deployment scenarios and compare it with theoretical efficiency models.
  • Wrote an internal report defining energy-efficiency KPIs for RAN elements and reviewing optimization strategies.
C++ns-3Linux
02 / Skills

Technical skills.

Languages

GoJavaPythonRustSQLC++TypeScriptLua

Backend & data

Spring BootKafkaRedisElasticsearchPostgreSQLMongoDBDistributed SystemsSystem Design

Infrastructure

AWSDockerLinuxGitCI/CDKibana

AI

LLM IntegrationPrompt EngineeringModel Context Protocol (MCP)Code Indexing & RetrievalAI Evaluation Harnesses
03 / Education

Chandigarh University

Bachelor of Engineering, Computer Science

Jul 2019 — Jul 2023
Continued learning
Courses & certifications 10
  • Spring Boot Microservices & Spring Cloud

    Udemy · Oct 2022

  • Android App Development

    Internshala · Jul 2021

  • HTML, CSS, and JS for Web Developers

    Coursera · Jun 2021

  • Computer Graphics with OpenGL & C++

    Udemy · May 2021

  • Database Management System

    NPTEL · Mar 2021

  • 2D Platformer in Unity & C#

    Udemy · Jan 2021

  • Data Structures & Algorithms (Java)

    NPTEL · Dec 2020

  • Software Engineering

    NPTEL · Dec 2020

  • Intro to C# & Unity

    Coursera · Aug 2020

  • C Programming

    Spoken Tutorial · Nov 2019

Awards

1st Place — Bito Company-Wide Hackathon

2025

AI Code Review Agent evaluation suite, adopted internally.

Byomkesh Bakshi Award — Adda247

2024

Technical contributions and delivery speed on reliability-critical systems.

04 / Away from the keyboard

Outside work.

Football

Combat sports

Music

Dogs & cats

Contact

Want to work
together?

Email me about a role or project.