Usama Akbar
Senior Software Engineer
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Portfolio
Werkervaring
Senior Full Stack Developer
Remotebase • Fulltime
Nov 2022 - Present • 3 yrs 11 mos
Architect and develop full-stack SaaS and Fintech platforms using React, Next.js, NestJS, GraphQL, and MongoDB, delivering scalable and maintainable production codebases. • Led full-stack development of Fintech systems handling real-time payment processing, KYC/KYB verification flows, and secure financial data management with React, Next.js, Node.js, and PostgreSQL. • Reduced response time on high-traffic affiliate payment endpoints by [X]% by replacing sequential database calls with $facet aggregation pipelines and parallelized commission/payout queries. • Design and deploy Solidity smart contracts using the Foundry framework, enabling secure on-chain transactions for Fintech platforms across Ethereum, BSC, and Polygon. • Hardened media delivery for a healthcare platform by migrating publicly addressable S3 assets to CloudFront presigned URLs behind an Express authorization proxy, eliminating unauthenticated access to protected patient media. • Built responsive, user-centric interfaces backed by robust API layers, ensuring seamless end-to-end functionality across web and mobile clients. • Communicate directly with clients through demos and feedback sessions, aligning technical deliverables with business requirements and release timelines. • Enforce secure coding practices across the stack, including dependency auditing, credential rotation, and IAM least-privilege policies following security incident reviews.
Software Engineer
Devsinc • Fulltime
Feb 2019 - Oct 2022 • 3 yrs 8 mos
Developed the frontend of Xanalia, a decentralized NFT marketplace for the Metaverse spanning Ethereum, BSC, and Polygon, powered by Chainlink VRF. • Collaborated with a Scrum team of 12+ engineers to build marketplace features using React, Web3.js, Redux, Redux-Thunk, Styled Components, and Jest. • Integrated crypto wallets including MetaMask, Binance Chain Wallet, and Polygon for secure NFT minting, buying, and selling flows. • Achieved 80%+ unit test code coverage with Jest and Enzyme, improving platform stability and reducing regression defects. • Built a reusable React component library and integrated REST APIs to standardize frontend-backend communication across the product.