Abdullah Khalid

Full-Stack TypeScript Engineer

khalid.code03@gmail.com
Dhaka, Bangladesh

Professional Summary

Backend-focused TypeScript engineer with 4+ years of experience building scalable SaaS, HealthTech, and FinTech platforms. Expert in architecting microservices, real-time data pipelines, and secure production systems.

Experience

Interspeed

2023-01Present

Full-Stack TypeScript Developer

  • Engineered a TypeScript-first trading engine using Bun and Elysia.js, processing live market data from Binance, KuCoin, Coinbase, and Solana DEXs.
  • Built an automated cross-exchange arbitrage engine using Redis pub/sub and WebSocket streams.
  • Developed Sofilite LIMS with a multi-role architecture and dynamic form generation.
  • Modernized legacy EMR codebase, improving clinician and patient workflows.

Freelance / Contract

2020-012023-01

Full-Stack Web Developer

  • Completed 100+ client projects with consistent 5-star ratings.
  • Built custom CMS dashboards and multi-vendor e-commerce platforms using Next.js and NestJS.
  • Integrated payment gateways and third-party APIs.

Selected Projects

Algorithmic Crypto Trading Platform

Non-custodial algorithmic trading platform with real-time arbitrage detection.

  • Real-time data ingestion
  • Automated execution engine

Laboratory Information Management System

Full-featured LIMS for hospitals and diagnostic centers.

  • Multi-role architecture
  • Dynamic report generation

Skills

Backend

Node.jsBunElysia.jsFastifyNestJSExpress.jsPhoenixElixir

Frontend

ReactReact NativeNext.jsSvelteKitTailwind CSS

Database & ORM

PostgreSQLMySQLMariaDBMongoDBRedisPrismaDrizzleTypeORM

FinTech / Web3

Solana RPCAnchorJupiter DEX AggregatorBinance APIWeb3.js

DevOps

AWSDockerCI/CDLinux Server OpsGrafana

Education

Uttara University

B.Sc. in Computer Science & Engineering

2024Present

Tangail Polytechnic Institute

Diploma in Computer Science & Engineering

20192023

Languages

EnglishProfessional Working Proficiency
BanglaNative