Available for freelance · IST (Hyderabad)

I design & ship
mobile products
clients love.

Hi, I'm Roshani Sahu — Senior Mobile & Full-Stack Engineer with 6+ years building mobile apps, web products, APIs, and AI-powered experiences across healthcare, payments, and consumer products.

See my work
Roshani Sahu

Senior Mobile & Full-Stack Engineer

6.8+Years exp.
12+Products shipped
3Full-stack builds
2Platforms

About me

I'm based in Hyderabad, India, and work with founders and teams who need a reliable engineer from idea to App Store. I build across the stack — mobile, web, and backend — with React Native, React, Node.js, and TypeScript.

What I help clients with

01

MVP & product builds

Ship a polished v1 fast — navigation, auth, core flows, and API integration ready to scale.

02

Mobile & web apps

React Native and Expo for mobile; React for web dashboards, admin tools, and polished product UIs.

03

Backend & real-time

REST, GraphQL, WebSockets, Firebase — auth, sync, and data layers your app can rely on.

04

Rescue & optimization

Fix crashes, improve performance, refactor architecture, and prepare for store release.

How we'll work together

A clear path from first call to App Store — so you always know what's happening and what comes next.

  1. 01

    Discovery call

    We align on goals, users, timeline, and what's in scope for v1. You leave with a rough plan — no pressure to commit on the spot.

  2. 02

    Scope & estimate

    Written breakdown of features, milestones, and cost. Fixed-scope MVPs or iterative sprints — whatever fits your stage.

  3. 03

    Build & review

    Weekly updates, shared builds, and async feedback. You see progress early — not a big reveal at the end.

  4. 04

    Ship & handoff

    Store submission support, documentation, and clean handoff. You own the repos, credentials, and codebase.

Clear communication

Plain-language updates — no jargon walls. IST hours with overlap for US/EU mornings when needed.

Documented delivery

README setup, env notes, and release steps so your team isn't blocked after I roll off.

Production quality

Testing, crash fixes, and performance work — built for real users, not just demo day.

Outcomes from recent work

Real results from enterprise and product builds — the kind of impact I aim for on every engagement.

~30%

Shorter billing cycle on a field logistics app through streamlined mobile workflows.

Logistics
~25%

Better driver efficiency after redesigning core ops flows for low-connectivity use.

Field ops
Offline-first

Drill management with PDF reports and sync for mining sites with poor connectivity.

Mining

Skills & domains

Mobile

React Native, Expo, TypeScript, Android (Java/Kotlin), Ionic, Flutter

Web

React, Redux Toolkit, RTK Query, Tailwind CSS, Vite, responsive UI

Backend

Node.js, Express, Bun, GraphQL, REST, Keystone, MongoDB, Firebase

Cloud & SDKs

Firebase, Stripe NFC, Clerk, Google Maps, Gemini AI, Socket.IO, Agora

Quality

Jest, Detox, JUnit, CI/CD, App Store & Play Store deployment

HealthcareLogisticsMiningGovernment E-commercePaymentsFood TechReal-time Chat

Featured projects

Personal full-stack builds — tap a card to view screenshots & demo walkthroughs.

Halo real-time chat app
React Native · React · Socket.IO · MongoDBReal-Time Chat

Halo

Full-stack real-time chat across native mobile and web on one Express + Socket.IO backend — voice, image & video messages, reactions, presence, read receipts, and push notifications.

Zaika food delivery app
React Native · Redux Toolkit · MMKVFood Delivery

Zaika

Bilingual (EN/हिंदी), fully themeable food-delivery & dining app — complete order → customize → cart → checkout → reorder flow with instant runtime theme switching.

Stream AI streaming app
React Native · Keystone · GraphQL · GeminiMedia / AI

Stream AI

AI-powered audio & video streaming with Gemini-driven picks, a persistent global player, playlists, and a real play-count Trending feed on a Keystone GraphQL backend.

Enterprise delivery

Selected client work from 6+ years in product engineering.

Healthcare

Online Medical Treatment Platform

Multi-role telehealth app with JWT auth and REST workflows across Android & iOS.

Mining

Drill Management System

Offline-first drill ops with PDF reports and sync for low-connectivity sites.

Government

Industrial Management App

MoU tracking with REST & GraphQL and accessible government UI.

Payments

Digital Tipping Platform

Stripe M2 NFC via Flutter method channels and FCM notifications.

Logistics

Field Billing Ops App

Cut billing cycle ~30% and improved driver efficiency ~25%.

Web

Internal tools & dashboards

React and Node.js proof-of-concepts, automation UIs, and API-driven dashboards for cross-functional teams.

Experience

Senior Software Engineer

Techment Technology · Bhilai, India

Owned end-to-end mobile and web delivery, internal tools, payment SDK integration, and cross-functional releases.

Software Engineering Intern

Techment Technology

Native Android with Java, REST APIs, and Material Design components.

Certifications

Microsoft

Microsoft Certified: Fabric Data Engineer Associate

Earned Dec 2025 · Valid through Dec 2026

Credential ID: E9DB4791718BC920

Verify on Microsoft Learn →

Education

MCABIT Durg · 85.25%2016 – 2019
BCASPASC Nawapara · 72.8%2013 – 2016

Common questions

Straight answers before you reach out — saves us both time on the first call.

What types of projects do you take on?

MVPs, mobile and web product builds, backend APIs, rescue/refactor work, and store releases. I work best when you need one engineer who can own mobile, web, and API together.

How do you charge?

Fixed price for well-defined MVPs, or monthly/sprint-based for ongoing work. After the discovery call I send a written scope and estimate — no surprise invoices.

What's your timezone and availability?

I'm in Hyderabad (IST). I overlap with US mornings and EU afternoons for calls, and stay responsive async on Slack, email, or WhatsApp.

Who owns the code and accounts?

You do — GitHub repos, app store accounts, Firebase/cloud projects, and credentials stay in your name. I work in your tools from day one.

Can you sign an NDA?

Yes. Happy to sign your NDA before we discuss product details or review existing codebases.

Let's work together

Open to freelance contracts, MVPs, and long-term product partnerships. Book a free 30-minute call or email me — I typically reply within 24 hours.

Email roshanicareer@gmail.com Phone +91 89596 19881
Location Hyderabad, India · IST
Email me Resume