Rajat Khanduri

Experience

1. Software Engineer

   Amboss

   Nov 2024 – Present

   Remote • Europe timezone

   Payments and Lightning startup. Generalist across every product, backend to UI.

   • Shipped across every Amboss product: payments, the liquidity marketplace, trading, node hosting, identity, and the web apps on top.
   • Built the payments platform end to end, from checkout and webhooks to the alerts that catch stuck payments.
   • Shipped the billing and money-movement jobs behind commissions, payouts, and tax reporting.
   • Built Kubernetes hosting for customer nodes and sped up delivery with PR preview deploys and stronger CI.
   • Rolled out SSO, two-factor auth, and pay-per-use API access, and tightened security across products.

2. Software Engineer / Core Maintainer

   Openswap

   Nov 2023 – Oct 2024

   Remote • US team

   Open-source Bitcoin privacy protocol in Rust.

   • Maintained the core Rust libraries: wallet storage, public APIs, tests, and docs.
   • Cut wallet storage size by 28.8% and integration-test runtime by 21.7%.
   • Rebuilt the wallet on BDK during Summer of Bitcoin 2024.

3. Open Source Software Engineer

   XWiki / Google Summer of Code

   May 2023 – Sep 2023

   Remote • XWiki (France)

   Built and shipped a graph explorer for XWiki pages as an installable extension.

   • Shipped search, filters, and theme-aware graph views.
   • Landed 170+ commits and closed 25+ issues, with docs and a demo.

4. Freelance Software Engineer

   Freelance

   Dec 2021 – Apr 2023

   Remote

   Independent client work completed alongside university studies.

   • Shipped small web products, APIs, and automation for clients on Upwork, Fiverr, and Freelancer.

Open Source

• Openswap

  maintained the Rust Bitcoin swap core across wallet storage, APIs, tests, docs, and protocol ergonomics.

• ThunderHub

  maintained the Lightning node dashboard across channel setup, asset trading, payments, and self-hosting.

• XWiki Apps

  built and maintained Interactive Link Visualizer across graph search, layouts, controls, and theme support.

• Banco

  improved data loading, contacts, health checks, and build reliability for a Lightning banking app.

• Graphology

  packaged the graph library for XWiki and contributed fixes and integration feedback.

• Sigma.js

  reported issues across dark themes, dragging, documentation, and releases during GSoC.

• XWiki Platform

  fixed tagging bugs and shipped feature improvements.

Selected Projects

• orphanode

  Published Rust CLI that finds provably dead JS/TS code through cross-workspace reachability analysis.

• Coreloop

  Self-hosted Go/Next.js learning loop with durable jobs, delivering lessons and tech news through Telegram.

• unixDM

  C++17 terminal download manager with up to 32 parallel, resumable segments.

• Elevate vs Beemer

  Three.js racing game with real-time multiplayer on WebSockets and Cloudflare Durable Objects.

• autocommit-rs

  Published Rust CLI that writes conventional commits from staged changes using OpenAI or Gemini.

• Interactive Link Visualizer

  TypeScript XWiki extension that maps page links as an interactive Sigma.js graph.

Achievements

• Summer of Bitcoin

  selected from 5000+ applicants.

• Linux Foundation Mentorship

  selected from 10,000+ applicants.

• Google Summer of Code

  selected fellow from the top 2% of 43,765 applicants; shipped a 350-hour project.

• Major League Hacking

  selected for the software engineering track.

• CodeChef Long Challenge II

  Global Rank 1.

• Open-source and private work

  2000+ total pull requests merged.

• Technical writing

  maintains technical docs and writes on systems, Go, and web development.

Skills

Languages

TypeScript, Go, Rust, SQL, Python

Backend

Node.js, NestJS, GraphQL, REST APIs, PostgreSQL, Redis, OAuth 2.0

Infrastructure

AWS, Kubernetes, Docker, CI/CD, Datadog

LLM inference

llama.cpp, vLLM, GGUF quantization, Inference benchmarking, GPU cost modeling

Domains

Payments, Identity & Access, Distributed Services, Developer Tooling, Bitcoin & Lightning

Education

• Bachelor of Engineering

  Panjab UniversityGPA 7.25/10

  2021 – 2025

• High School

  CBSEGPA 9.56/10

  2020