Open to senior & lead full-stack roles

Prashant SinghSenior Full Stack Developer

I build scalable web & mobile products end-to-end — from pixel-perfect UI to resilient APIs.

Noida, U.P, India•React.js · React Native · Next.js · Node.js · TypeScript
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Years of experience
5+
REST APIs integrated
600+
Mobile & web screens
800+
Frontend team led
10
  • React.js
  • Next.js
  • React Native
  • TypeScript
  • Node.js
  • Express.js
  • GraphQL
  • Redux Toolkit
  • Tailwind CSS
  • PostgreSQL
  • MongoDB
  • AWS
  • Docker
  • Socket.IO
  • Hono
  • Prisma
01 · About

Engineering products end-to-end

From pixel-perfect interfaces to resilient backends and CI/CD — I ship complete, production-grade experiences.

Prashant Singh

Senior Software Engineer · Full Stack Developer

Noida, U.P, India

Full Stack Developer with ~5 years of experience designing, developing, and deploying scalable web and mobile applications using React.js, React Native, Next.js, and Node.js. Proven track record of integrating 600+ REST APIs, leading 10-member frontend teams, and delivering end-to-end solutions in fintech, healthtech, and well-being domains. Adept at HIPAA/GDPR-compliant architectures, CI/CD pipelines, AWS cloud deployments, Agile/Scrum workflows, and modern tooling including TypeScript, Redux Toolkit, GraphQL, and Docker.

Currently

Senior Software Engineer @ Ongraph

Specialised in

HIPAA / GDPR architectures

Fintech

Digital wallets, P2P transfers and parental controls for family banking (Bloon).

Healthtech

HIPAA & GDPR-compliant fertility platform with EMR-integrated modules (Salve Health).

Well-being

B2C platform with CRM page builder and cross-platform branding (Pirkx).

02 · Services

What I can do for you

End-to-end product engineering — from web and mobile interfaces to APIs, AI features, and delivery.

Web App Development

Fast, accessible web apps and dashboards with React.js & Next.js — from design system to production.

  • Next.js (SSR/SSG) apps
  • Pixel-perfect Figma builds
  • Design systems & component libraries
  • Performance & SEO optimization

Mobile App Development

Cross-platform iOS & Android apps with React Native and Expo, shipped to the stores.

  • React Native / Expo apps
  • App Store & Play Store delivery
  • Push notifications & deep links
  • Offline-first & real-time features

Backend & APIs

Scalable services and APIs with Node.js, Express, Hono and GraphQL — secure and well-structured.

  • REST & GraphQL APIs
  • Auth (JWT) & RBAC
  • Real-time with Socket.IO
  • MVC architecture & DB design

AI & RAG Integration

AI features built on OpenAI — RAG pipelines, chatbots and custom LLM assistants.

  • RAG systems from scratch
  • Prompt engineering
  • Conversational assistants
  • Tavus / video-AI integration

Cloud & DevOps

Reliable delivery with AWS, Azure DevOps, Docker and CI/CD pipelines.

  • CI/CD pipelines
  • AWS (Amplify, S3) & Azure
  • Dockerized deployments
  • HIPAA / GDPR-compliant flows

Team Leadership

Leading frontend teams in Agile/Scrum — planning, reviews and on-time delivery.

  • Sprint planning & estimation
  • Code reviews & standards
  • Mentoring & pairing
  • Multi-project delivery
03 · Skills

A full-stack toolkit

The languages, frameworks and platforms I reach for to design, build, test and ship across web and mobile.

Languages

JavaScript (ES6+)TypeScript

Frontend

React.jsNext.jsRedux ToolkitTailwind CSSMUIBootstrapHTML5CSS3SCSS

Mobile

React NativeExpo

Backend

Node.jsExpress.jsREST APIsGraphQLSocket.IOHono

Databases

MongoDBPostgreSQLMS SQLAzure SQLFirebase Firestore

Cloud & DevOps

AWS (Amplify, S3)Azure DevOpsDockerCI/CD PipelinesGitGitHubGitLabBitbucket

Architecture

MonorepoMVCMicroservicesAgile/ScrumSDLCJWT Auth

Testing

Jest (Unit & Integration)Cypress (E2E)

AI & Dev Tools

Cursor AIAntigravityClaude AIGitHub CopilotChatGPTFigmaVS CodeAndroid StudioXcode

Compliance

HIPAAGDPR
04 · Experience

A track record of delivery

Roles where I led teams, shipped products, and turned requirements into reliable, scalable software.

  1. Senior Software Engineer

    Ongraph Technologies Pvt. Ltd.

    Aug 2022 — PresentNoida, India
    • Led a 10-member frontend team across mobile and web platforms; managed sprint planning, code reviews, and delivery timelines in an Agile environment.
    • Developed 460+ mobile screens (React Native) and 360+ responsive web pages (Next.js / React.js) aligned to Figma designs with pixel-perfect accuracy.
    • Integrated 600+ REST APIs across multiple products, improving system extensibility, performance, and reliability.
    • Built scalable, HIPAA & GDPR-compliant UI flows for healthcare platforms including secure messaging, EMR-integrated modules, and document management.
    • Implemented real-time features using Socket.IO and Firebase — P2P transactions, push notifications, and live chat.
    • Set up and maintained CI/CD pipelines (Azure DevOps, GitHub Actions), reducing deployment time by ~40%.
    • Oversaw concurrent multi-project delivery — fintech (Bloon), healthtech (Salve Health), and well-being (Pirkx) — within budget and deadline.
    React NativeNext.jsReact.jsTypeScriptRedux ToolkitSocket.IOAWSAzure DevOps

  2. Software Engineer

    Ethonix Infotech Pvt. Ltd.

    Apr 2022 — Aug 2022Delhi, India
    • Designed and delivered 50+ RESTful APIs for the Unecops platform using Node.js and Express.js.
    • Optimised 10+ PostgreSQL stored procedures and 15+ database tables, reducing query latency and data redundancy.
    • Collaborated cross-functionally to ensure backend stability, scalability, and timely release cycles.
    Node.jsExpress.jsPostgreSQLREST APIs

  3. Assistant Software Engineer Trainee

    Tata Consultancy Services

    Aug 2021 — Apr 2022Gurugram, India
    • Maintained and resolved production tickets for a Flight Management System under the CBO stream at TCS.
    • Delivered timely support and solutions ensuring smooth project operations and SLA compliance.
    Production SupportSQLSLA Management
End of experience timeline.
05 · Projects

Selected work

Production platforms across fintech, healthtech, AI and well-being — built and shipped end-to-end.

01Well-being · Web & Mobile
Pirkxpirkx.com

B2C well-being platform spanning web, mobile & admin.

Led full-stack frontend development of the admin panel, customer-facing web app, and React Native mobile app for a B2C well-being platform.

  • Built region-wise multi-entity management, a CRM page builder, drag-and-drop benefit modules, and blog management.
  • Delivered company-level theme & branding personalisation with cross-platform sync between web and mobile.
React.jsReact NativeRedux ToolkitAWS AmplifyS3Firebase
Case studyVisit site
02AI · RAG · Coffee Sensory Evaluation
The Espresso Protocolapp.tep.coffee

AI-assisted sensory evaluation with a RAG-powered chatbot.

An AI-assisted sensory evaluation platform for specialty coffee, with a custom RAG system and chatbot built from scratch on OpenAI. Shipped as a web portal and a React Native (Expo) mobile app.

  • Built a RAG system from scratch with OpenAI and custom prompt engineering — a chatbot that fetches data from the database, answers questions, and summarises the results.
  • Designed a scalable Hono backend with MVC architecture and Prisma ORM on Azure SQL.
  • Delivered a cross-platform React Native (Expo) app alongside the web portal, with CI/CD on Azure DevOps.
ReactReact NativeExpoTypeScriptOpenAIRAGTailwind CSSshadcn/uiHonoAzure SQLPrismaTanStack QueryAzure DevOps
Case studyWeb portalApp Store
03Healthtech · AI · Custom LLM
AI Psychiatric Clinic Assistantpsych-gpt.vercel.app

Custom-LLM intake assistant with conversational video (Tavus).

An AI psychiatric clinic assistant that acts as a custom LLM, integrated with Tavus so patients can interact, consult, and share information conversationally — which doctors review later to save time and reference patient history.

  • Built a custom LLM on OpenAI and wired it into a Tavus video integration, letting patients consult and provide information through natural conversation.
  • Generated structured session summaries so doctors can quickly analyse cases and reference a patient's history instead of starting from scratch.
Next.jsJavaScriptOpenAITavusCustom LLMVercel
Case studyLive demo
04Healthtech · HIPAA-Compliant
Salve Healthsalvehealth.com

HIPAA-compliant fertility platform built as a monorepo.

Developed three apps in a single monorepo — a clinic platform (React & Angular), an admin panel, and a patient mobile app (React Native).

  • Integrated the Zoom SDK with a custom Google Meet-like UI as a reusable cross-framework package.
  • Implemented HIPAA & GDPR-compliant data flows, secure messaging, and EMR-integrated education modules.
React.jsReact NativeAngularTypeScriptZoom SDKGraphQLAWSMonorepo
Case studyVisit site
05Fintech · Family Banking
Bloonbloon.eu

Cross-platform family banking app with parental controls.

Built a cross-platform family banking app enabling digital wallets, P2P transfers, and parental controls, with goal setting and spending insights.

  • Achieved 30% faster onboarding with a reusable NativeBase UI and delivered spending insight dashboards.
  • Maintained high code quality via Jest unit & integration testing; collaborated in Scrum for on-time MVP delivery.
React NativeRedux ToolkitNativeBaseFirebase AuthCloud Firestore
Case studyVisit site
06 · Testimonials

What people say

A few words from people I've worked with across teams and products.

“Prashant led our frontend delivery across web and mobile with real ownership — pixel-perfect UIs, clean architecture, and consistently on-time releases.”

Add real name

Engineering Manager · Replace with company

“He integrated complex APIs and real-time features without breaking a sweat, and raised the bar for code quality through thoughtful reviews.”

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Product Manager · Replace with company

“A reliable senior engineer who can take a product from Figma to production — frontend, backend, and CI/CD all covered.”

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Founder · Replace with company

07 · Credentials

Certifications & education

Continuous learning across modern stacks, agile delivery and the fundamentals.

Certifications

React Native Mobile App Developer

LearnCodeOnline

Oct 2023

Agile Methodology

LinkedIn Learning

2022

MERN Stack

SSDN Technologies

Mar — Jun 2020

Education

MBA — Information Technology & Systems Management

NMIMS (Narsee Monjee Institute of Management Studies)

74%

2022 — 2025

B.Tech — Computer Science & Engineering

SRMS College of Engineering & Technology, Bareilly

CGPA 6.65

2017 — 2021

Always learning — currently deepening AI-assisted development workflows and scalable backend architecture.
Open to senior & lead full-stack roles

Let's build somethingexceptional together

Have a role, a product idea, or a project in mind? Send a message and I'll get back to you — or reach me directly through any channel below.

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