Senior Software Engineer | Node.js, NestJS, TypeScript, Next.js, AWS | APIs, Fintech & Full-Stack Systems
Senior software engineer focused on backend, full-stack, and platform architecture across fintech, healthcare, real estate, and Web3. I build production systems with Node.js, NestJS, TypeScript, Next.js, React, React Native, PostgreSQL, AWS, Docker, and Python.
My current work is on loan securitization and tokenization infrastructure: loan-tape stratification, cashflow modeling, waterfall calculations, pricing workflows, financial utilities, APIs, payment and identity-verification integrations, document workflows, end-to-end testing, and observability.
Selected experience
• Multi-chain wallet and digital-asset platforms across Bitcoin, Ethereum, and BNB Chain, including Cryptokara (500K+ active users), BlockMerchants, and CQR Vault.
• Healthcare real-time communication and group consultation features, including work on Attend Anywhere with Induction Healthcare PLC using AWS Chime SDK.
• SaaS and workflow platforms with React Flow, relational data workflows, Tiptap editing, PDF export, AI-assisted automation with LangChain and Claude AI, and PostHog analytics.
• Real estate marketplace systems covering property discovery, payments, onboarding, document workflows, and analytics.
• React Native apps across streaming, location/video, communities, route-sharing, and blockchain/NFT use cases.
Services include
• Node.js/NestJS backend architecture and API development
• TypeScript, Next.js, React, and React Native product development
• PostgreSQL and data/workflow design
• AWS, Docker, CI/CD, testing, and production reliability
• Fintech/financial workflows, tokenization, Web3, and third-party integrations
• Modernizing existing codebases and taking ownership of complex engineering work
I work best with teams that need a senior engineer who can understand the business problem, make sound technical decisions, and ship maintainable software.
Work Terms
Availability
Available for full-time and part-time engagements, typically Monday-Friday, 9:00 AM-6:00 PM Pakistan time (UTC+5), with reasonable overlap for distributed teams.
Project workflow
1. Clarify goals, existing codebase, constraints, and success criteria.
2. Agree on architecture, scope, milestones, and delivery plan.
3. Implement incrementally with testing, review, and regular progress updates.
4. Deploy, document, and hand over; follow-up improvements can be handled as a separate phase.
Engagements
Open to hourly or fixed-price work through Guru SafePay. For fixed-price projects, I prefer clear milestones and acceptance criteria. For hourly projects, I provide transparent hour records and progress reporting.
Best fit
Complex backend/full-stack work, APIs and integrations, data-heavy workflows, cloud infrastructure, fintech platforms, SaaS products, and production systems that need reliable technical ownership.