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Hi, I'm Ashfaq Nisar
Full stack developer building HIPAA-compliant healthcare platforms and high-scale billing systems.
- uiReact 18, TypeScript, Mantinecomponents migrated from Chakra UI, at Rhythm400+
- apiSpring Boot microservicesemail templates for Verizon, at Cognizant20+
- dataPostgreSQLbilling records migrated with zero downtime, at Rhythm2M+
- mlOCR, synthetic training datahigher accuracy on handwritten forms, at Ezerka40%
- infraAWS SQS, BedrockHL7/XML transmissions triaged a day, at Rhythm10,000+
A bit about me
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.
Tools & technologies
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"] },];Where I've worked
A track record of shipping production systems, leading teams, and improving how software gets built.
Jul 2023 – Present
Full Stack Engineer
Rhythm Healthcare
Hyderabad, India
Building HIPAA-compliant full-stack solutions for cardiac care and EHR systems serving 400,000+ patients and practitioners.
- Designed an AI-driven medical triage system with AWS Bedrock, processing 10,000+ HL7/XML transmissions daily via SQS with full audit logging.
- Architected a React 18 + TypeScript front end from scratch, migrating 400+ components from Chakra UI to Mantine with Redux Toolkit and RTK Query.
- Migrated a 2M+ record billing system to a normalized relational schema, cutting manual corrections by 80% with zero downtime.
- Integrated SWC into NestJS, reducing build times from 5 minutes to ~2–3 minutes and cold starts by 70%.
- Set up Turborepo with an AWS build cache written in Terraform, cutting API pipeline runs from ~18 minutes to under 6.
React, TypeScript, NestJS, AWS, Redux Toolkit, Okta, PostgreSQL
Sep 2021 – Jul 2023
Technical Lead & Co-founder
Ezerka Technology Solutions
Hyderabad, India
Co-founded and led a 5–8 engineer team delivering full-stack MERN applications for diverse client projects.
- Built advanced PDF report generation with @react-pdf/renderer and automated E2E testing with Playwright in CI/CD.
- Increased OCR model accuracy by 40% through synthetic training dataset generation for handwritten form processing.
- Owned backend reliability with PostgreSQL triggers, mentoring engineers on Git, CI/CD, and scalable architecture.
- Served as primary technical contact for clients—documentation, requirements alignment, and delivery risk mitigation.
React, Next.js, Node.js, PostgreSQL, Playwright, Tailwind CSS
Dec 2020 – Aug 2021
Programmer Analyst Trainee
Cognizant Technology Solutions
Hyderabad, India
Revamped Verizon's enterprise email infrastructure with data-driven HTML templates, Spring Boot microservices, and React dashboards.
- Built Spring Boot microservices for template rendering, data binding, and outbound email delivery.
- Created 20+ dynamic HTML email templates for promotional, transactional, and customer communications.
- Developed React interfaces enabling non-technical teams to preview and dispatch campaigns independently.
- Conducted workshops on Spring Boot microservices and React patterns for internal adoption.
Java, Spring Boot, React, Microservices, CI/CD
Dec 2019 – Apr 2020
Software Developer Intern
Rubicon Red
Hyderabad, India
Modernized a logistics application by migrating React class components to hooks-based functional components.
- Led migration of an enterprise 3PL client app from class to functional components with Hooks.
- Delivered critical dashboard features under aggressive deadlines with designers, QA, and PMs.
- Improved maintainability with reusable components and custom ESLint rules for coding standards.
React, JavaScript, ESLint
What I use
The editors and local models I build with, and the stack I reach for first.
Editors and agents
- ZedWith a local qwen3-coder:30b for completions
- CursorFor larger refactors
- Claude CodeIn the terminal, for multi-file work
Local AI
- OllamaServing qwen3-coder:30b and qwen3.6:35b at 4-bit
- llama.cppRPC mode for models too big to serve from one box
- nomic-embed-textEmbeddings for local RAG experiments
Default stack
- BunRuntime, package manager and test runner
- Fastify or NestJSAPIs, depending on the size of the service
- PostgreSQL with Drizzlepgvector when the app needs search
- React with Vite or Next.jsTailwind and shadcn/ui on top
From people I’ve worked with
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.”
You scrolled this far, so here's a game
Ship Sprint is a little game I built for fun. Dodge meetings, outages and scope creep, fix bugs and ship to prod before time runs out.
L1/5 StagingTime 0:45Score 0Best 0
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.
Let's connect
Whether you're hiring, collaborating, or just want to say hello, I'd love to hear from you.
- Location
- Hyderabad, India
Recruiters and hiring managers: my resume is always up to date. Feel free to reach out directly by email.