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Full stack developer building HIPAA-compliant healthcare platforms and high-scale billing systems.
A track record of shipping production systems, leading teams, and improving how software gets built.
Jul 2023 – Present
Rhythm Healthcare
Hyderabad, India
Building HIPAA-compliant full-stack solutions for cardiac care and EHR systems serving 400,000+ patients and practitioners.
React, TypeScript, NestJS, AWS, Redux Toolkit, Okta, PostgreSQL
Sep 2021 – Jul 2023
Ezerka Technology Solutions
Hyderabad, India
Co-founded and led a 5–8 engineer team delivering full-stack MERN applications for diverse client projects.
React, Next.js, Node.js, PostgreSQL, Playwright, Tailwind CSS
Dec 2020 – Aug 2021
Cognizant Technology Solutions
Hyderabad, India
Revamped Verizon's enterprise email infrastructure with data-driven HTML templates, Spring Boot microservices, and React dashboards.
Java, Spring Boot, React, Microservices, CI/CD
Dec 2019 – Apr 2020
Rubicon Red
Hyderabad, India
Modernized a logistics application by migrating React class components to hooks-based functional components.
React, JavaScript, ESLint
Systems I changed across four companies, what they ran on before, and what the change bought.
| Area | Before | After | Result |
|---|---|---|---|
| UI libraryRhythm Healthcare | − Chakra UI | + Mantine, Redux Toolkit, RTK Query | 400+ components migrated |
| Billing dataRhythm Healthcare | − 2M+ records, manual corrections | + Normalized relational schema | 80% fewer manual corrections, zero downtime |
| NestJS buildsRhythm Healthcare | − 5 minutes | + ~2–3 minutes with SWC | Cold starts down 70% |
| OCR modelEzerka | − Original training data | + Synthetic handwriting datasets | 40% higher accuracy |
| Email platformCognizant, for Verizon | − Enterprise email infrastructure | + Spring Boot services, data-driven templates | Non-technical teams preview and send campaigns themselves |
| Logistics appRubicon Red | − React class components | + Function components with Hooks | Reusable components and custom ESLint rules |
Systems I built, each with the problem, the architecture and what changed.
Rhythm Healthcare
An ingestion endpoint for EMR messages, built end to end, with every incoming report triaged automatically by a model on AWS Bedrock.
10,000+
HL7/XML transmissions triaged a day
Read the case studyAudit logevery decision recorded
Managers and teammates at Rhythm and beyond, in their own words on LinkedIn.
“One of his most impactful contributions was building the backend infrastructure for our clinical support AI product. This system leveraged AWS Bedrock and Anthropic’s Claude models to flag critical patient health issues requiring attention… I would welcome the opportunity to work with Ashfaq again and recommend him without reservation.”
“Ashfaq is also proactive in identifying and addressing technical debt, which improves development efficiency and accelerates time-to-value for our users. I would be thrilled to work with Ashfaq again in the future…”
“I have seen firsthand his dedication and passion for full stack engineering. Ashfaq is always proactive, seeking out ways to enhance our applications through automation and non-functional improvements.”
“His expertise spans across a wide array of technologies, and his ability to grasp new programming languages and frameworks is nothing short of remarkable.”
I'm Ashfaq, but most people call me Ash. I've been building on the web for a little over six years, and I still get the same kick out of shipping something that holds up in production, especially when it saves someone hours of manual work or clears a bug that's been sitting around for months.
I picked up coding seriously in college: hackathons, workshops, organizing an AI club, leading a Google Developer Student Club chapter. Smart India Hackathon, NASA Space Apps, DevFest, that's where I learned how to move fast, ask dumb questions early, and actually finish things with a team. A lot of how I work today came from those years.
Technologies I use daily to build, test, deploy, and maintain production applications.
export const skillCategories = [{ title: "Languages & Frameworks", skills: ["TypeScript", "JavaScript", "Java", "React", "Next.js", "tRPC", "NestJS", "Spring Boot", "Fastify", "GraphQL"] },{ title: "UI & Tooling", skills: ["Redux Toolkit", "RTK Query", "Tailwind CSS", "React Hook Form", "Vite", "SWC", "ESLint", "Prettier", "Turborepo"] },{ title: "Databases & ORMs", skills: ["PostgreSQL", "Firebase", "TypeORM", "Drizzle ORM", "MongoDB"] },{ title: "Cloud & Infrastructure", skills: ["AWS", "Google Cloud", "Docker", "Terraform", "GitHub Actions", "Bitbucket", "Vercel", "Sentry", "New Relic", "Better Auth", "Auth0", "Okta", "Clerk"] },{ title: "Testing", skills: ["Vitest", "Jest", "Cypress", "Playwright"] },];This site is a full stack app too. The list above is served as JSON from a route handler, so you can call it from here or from your terminal.
curl https://ashfaqnisar.me/api/stackGET /api/stackPreview of the response. Run it to call the live endpoint.
{
"name": "Ashfaq Nisar",
"role": "Full Stack Developer",
"location": "Hyderabad, India",
"status": "Open to remote opportunities",
"current": {
"company": "Rhythm Healthcare",
"role": "Full Stack Engineer",
"since": "Jul 2023"
},
"stack": {
"Languages & Frameworks": [
"TypeScript",
"JavaScript",
…Dodge meetings, outages, and scope creep: fix bugs and ship to prod before time runs out.
Press Space or tap to start · 5 levels · fix bugs and deploy
Bugs 0/3 · 3 lives · Prod pending
WASD or arrows to move, click or tap to pathfind, Space to start, next level, or retry. Bugs +10, Prod +50, time bonus +2 per second.
Whether you're hiring, collaborating, or just want to say hello, I'd love to hear from you.
Recruiters and hiring managers: my resume is always up to date. Feel free to reach out directly by email.