Kingsley.work

Kingsley Nweke

Backend Engineer

I am Kingsley Nweke, a result driven - project backed oriented web engineer with focus on backend and smart contract technologies, building scalable backend architecture and efficient systems.

Projects

eBuzz

eBuzz

Contributed to backend development by implementing authentication, post creation, profile management, and core APIs supporting groups, events, and multimedia sharing. Ensured secure data handling, supported recommendation system integration, and helped prepare the platform for a successful campus launch.

Nodejsexpressjsjavascriptnodemailercookie-parserMongoDB
GitHubLive Link

SIMBI Bot

Led the backend and Web3 integration for the Telegram study bot, building the API layer with Node.js and Express and developing the smart contracts in Solidity. Implemented blockchain-based reward logic, token distribution, and NFT issuance to incentivize study activity, while integrating the bot seamlessly with Telegram to create a gamified, decentralized learning experience.

Node.jsGroqJavaScriptEVM
GitHubLive Link

Civic Link

Backend and Web3 developer, wrote smart contracts and integrated into the backend

SolanaNode.jsPostgreSQL
GitHubLive Link
DojoPay

DojoPay

I was the product engineer. Built the frontend, backend and web3 integration.

Node.jsTypeScriptPostgreSQL NextjsAWS S3Tailwind CSSZustandSolana Wallet AdapterHeius RPC
GitHubLive Link

Tallie

As the sole backend developer, I designed and implemented the entire REST API, including the availability engine, reservation and waitlist logic, and overbooking prevention mechanisms. I handled concurrency and real-world seating constraints, integrated Redis caching with proper invalidation for performance, wrote comprehensive tests, and containerized the system with Docker to ensure production readiness and scalability.

NodejsExpressjsTypeScriptDockerRedisMongoDB
GitHub
Tutera

Tutera

Backend developer, focused on the analytics, customization of the creator landing page, Tranzakt Payment gateway integration, etc

NodejsExpressjsTypeScriptMongoDBRedisWasabi S3Socket.ioBullMQNodemailerTranzakt API
GitHubLive Link

Blockchain Explorer

Backend API integration and Node setup

NodejsJavaScriptInfura APIEVM
GitHub

Work History

2025
HarmonyKloud

HarmonyKloud

Backend Developer

Texas, United States

June 2025 - Present

Contributions

  • Contributed to the backend system serving 500+ users in a U.S.-based healthcare platform.
  • Built and maintained APIs for core features including patient data handling and appointment tracking.
  • Helping improve backend reliability and reduce minor service downtimes by supporting deployment workflows and error handling mechanisms
  • Collaborate on integration with third-party APIs such as Waystar and Office Ally
  • Integrate with databases such as MongoDB for data management and performance optimization
  • Ensure adherence to secure coding practices and implement robust user authentication and data protection strategies
  • Assist with bug tracking, system testing, and performance tuning
  • Collaborate across pods to meet sprint deliverables and customer expectations.
2022
Genesys Tech Hub

Genesys Tech Hub

Backend and Web3 Developer

Enugu, Nigeria

November 2022 - December 2025

Contributions

  • Built and deployed smart contracts for 3+ projects using Solidity and Hardhat.
  • Major contributor to the GNGN-token project, implementing and testing mint, burn, pause, and multi-signature transaction features.
  • Supported integration of smart contracts into civic ID and AI Telegram bot solutions as part of Learnable team collaborations.
  • Developed backend features and APIs for Learnable project applications using Node.js and Express.
  • Worked collaboratively in an Agile team to deliver backend modules across 3 internal projects.
  • Contributed to successful deployment and testing of Medbloc, reducing errors in appointment flow logic during demo week.