Rajat Khanduri

Experience

1. Software Engineer

   Amboss

   Nov 2024 - Present

   Remote • Europe timezone

   Globally distributed company building data, liquidity, and payment infrastructure for Bitcoin and Lightning.

   • Own shared identity and commercial API access across Amboss products, including an OAuth 2.0 SSO platform, TOTP two-factor authentication, and L402 pay-per-use access.
   • Ship backend services and customer workflows end to end, from NestJS GraphQL and REST APIs to React and Next.js interfaces.
   • Contribute to products for Lightning data, liquidity, and payments, including Taproot Assets workflows and LND integrations.
   • Operate services on AWS and Kubernetes; maintain CI/CD pipelines and internal tools used to ship production changes.

2. Software Engineer / Core Maintainer

   Openswap

   Nov 2023 - Oct 2024

   Remote • US team

   Open-source Rust implementation of a privacy-preserving Bitcoin swap protocol.

   • Maintained the core Rust libraries, owning wallet storage, public APIs, integration tests, and documentation.
   • Cut serialized wallet size by 28.8% by moving storage to binary CBOR.
   • Reduced integration-test runtime by 21.7% by redesigning protocol message encoding and decoding.
   • Selected for Summer of Bitcoin 2024; rebuilt wallet internals on BDK chain primitives and added RPC synchronization.

3. Open Source Software Engineer

   XWiki / Google Summer of Code

   May 2023 - Sep 2023

   Remote • XWiki (France)

   Open-source program; built an installable graph explorer for relationships across XWiki pages.

   • Designed and shipped search, facets, theme-aware visualization, and graph lifecycle cleanup.
   • Completed 170+ direct commits and resolved 25+ Jira issues; published the documentation, progress report, and demo.

4. Freelance Software Engineer

   Freelance

   Dec 2021 - Apr 2023

   Remote

   Independent client work completed alongside university studies.

   • Delivered small web products, APIs, and automation for clients through 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

  Rust CLI that proves unused JS/TS code through cross-workspace reachability analysis.

• Coreloop

  Self-hosted Go/Next.js learning system with durable jobs and optional LLM enrichment.

• unixDM

  C++17 download manager with 32 parallel segments, resumable transfers, and worker rebalancing.

• Elevate vs Beemer

  3D browser racer with custom physics and multiplayer on WebSockets and Durable Objects.

• autocommit-rs

  Published Rust CLI that generates conventional commits through configurable LLM providers.

• Interactive Link Visualizer

  Installable XWiki graph explorer with search, facets, and theme-aware visualization.

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

Domains

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

Education

• Bachelor of Engineering

  Panjab University · 2021 - 2025 · GPA 7.25/10

• High School

  Central Board of Secondary Education (CBSE) · 2020 · GPA 9.56/10