Sumit Kumar's Resume

Sumit Kumar

Detail-oriented Blockchain/Full Stack Engineer dedicated to building high-quality products.

New Delhi, India, IST

About

Blockchain-focused Full Stack Engineer specializing in high-performance decentralized applications, scalable Node.js services, and real-time collaboration systems. Experienced in technical architecture design and remote team leadership.

Work Experience

XP Network

2021 - Present

Senior Software Engineer

Leading technical architecture of a blockchain-based multi-chain NFT Bridge.
  • Developed Smart contracts for chains like Near, Casper, ICP, MultiversX, Secret, CosmWasm, and Solana using Rust, Tezos using Ligo, Aptos using Move
  • Wrote a generalized client SDK in typescript which can interact with each chain’s bridge contracts.
  • Implemented Decentralized Bridge Validators from scratch which are responsible for validating bridge transactions.
  • Deployed various blockchain nodes, handled CI/CD development of various programs and took up various system administration responsibilities.
  • Remote
  • Blockchain
  • Ethereum
  • Solidity
  • Rust

Freelance

2021 - 2024

Freelancer

Worked as a freelancer for various organization on various projects.
  • Blockchain Development which involved smart contracts for various clients in Ethereum and other chains.
  • Web Development which involved designing frontend and backend servers as per client’s demand across various languages including Go, Typescript, Rust, Python etc.
  • Remote
  • Freelancing
  • TypeScript
  • Golang
  • Rust
  • Python

FOSS

2015 - 2021

Open Source Developer

Successfully transitioned from mobile to full-stack development while leading distributed teams.
  • Development of AOSP Forks (Pixel Experience/Cosmic OS), Maintained Device Tree for a Xiaomi Device.
  • Multiple FOSS Apps and Libraries on GitHub.
  • Remote
  • Android
  • Rust
  • Golang

Education

Gautam Buddha University

2020 - 2024
Bachelor's Degree in Information Technology

Skills

  • Rust
  • Golang
  • TypeScript
  • Kotlin
  • Dart
  • Python
  • Solidity
  • Motoko
  • Git
  • Docker
  • Docker Compose
  • Linux
  • GitHub Actions
  • CI/CD Pipelines
  • PostgreSQL
  • SQLite
  • MySQL
  • MongoDB
  • Ethereum
  • TON
  • Cosmwasm
  • Near
  • MultiversX
  • Solana
  • Casper
  • Substrate
  • Dfinity
  • Axum Web
  • Gin-Go
  • Bun
  • Node
  • Elysia
  • MikroORM
  • FastAPI
  • Express
  • Diesel
  • SolidJS
  • React/Next
  • Tailwind CSS
  • shadcn/ui
  • ROM Development
  • Flutter
  • Jetpack Compose
  • Elixir
  • Gleam
  • Parsers/Compilers
  • RabbitMQ
  • SDL
  • TG Bot API
  • Discord Bot API

Side projects

Formula

Built a tool to listen for Ethereum NFT events on multiple chains concurrently to record NFT movements and list NFTs of user. Written in Rust, it perfectly utilizes the great concurrency provided via Tokio.

  • Rust
  • Diesel
  • ethers-rs
  • PostgreSQL

Posiedon

Built a toy blockchain in Rust to learn how a blockchain works. It uses RocksDB as database. Based on PoW Model, and UTXO Style Transaction.

  • TypeScript
  • Next.js
  • Vite
  • GraphQL
  • WebRTC
  • Tailwind CSS
  • PostgreSQL
  • Redis

Oak-log

An open source logger for the oak web server on deno. Plug and play logging for Oak.

  • TypeScript
  • Next.js
  • Tailwind CSS

Quicssh-rs

A QUIC/HTTP3 Proxy for SSH Connections that can be used without patching the server using Rust.

  • Rust
  • QUIC
  • HTTP3