www.invoicegenie.in
Featured
FINANCE / SaaS
InvoiceGenie
Enterprise Invoice Platform
Invoice management SaaS for freelancers and businesses — multi-currency, GST compliance, and real-time analytics.
React + VitePostgreSQLPrisma
Open to freelance & contract
Full-Stack
Product
Engineer.
I'm Tarun — I build production-ready software for startups, from React Native apps to scalable NestJS backends. I ship products that users actually use.
2.5+ Yrs5+ Products✓ AvailableClair HealthUS & EU15–20 hrs/wk
The person behind the codeThe engineer
The engineer
behind the systems.
I build fast, clean software
and care deeply about the craft.
Based in Jaipur, India. Full-stack engineer specialising in robust web applications and exceptional digital experiences. Shipping production software for international clients for over 2.5+ years — and just getting started.
Current Role
Full Stack Engineer — Clair Health
Feb 2026 – Present · Jaipur
Building core systems at a women's health wearable startup — React Native app, NestJS / PostgreSQL backend on Azure AKS, BLE sync & DevOps with ArgoCD.
B.Tech — Information Technology
Galgotias College of Engineering · Class of 2023
What I do
Full Stack
Building scalable
SaaS systems.
Mobile Engineering
Building BLE-connected
React Native apps for wearable hardware.
DevOps
Shipping reliable
cloud-native apps.
AI-Augmented Dev
Building with LLM APIs —
Claude & OpenAI — in real products, not demos.
Available for contract
Availability15–20 hrs / week
TimezoneIST · overlaps US & EU hours
Work typeFreelance & contract
Best fitStartups & growing teams
Tools of the trade
My tech stack
From mobile apps to cloud-native backends — the full spectrum of tools I use to ship fast, scalable products.
React
Next.js
Angular
TypeScript
JavaScript
Tailwind
Redux
What I've built
My projects
Production apps, side projects, and experiments — each one built to solve real problems.
Other projects
View all on GitHubpassman-navy.vercel.app
PassMan
Secure Local Password Manager
Local-first password manager with AES-256 encryption and secure cross-platform storage.
ReactTauriRust
skyshare.pro
SkyShare
P2P File Sharing Platform
End-to-end encrypted file sharing with unique links, password protection, and auto-deletion.
ReactTypeScriptWebRTC
theyellowtourism.com
Yellow Diaries
Corporate Travel Booking
Corporate travel app for flights and hotels with TripJack API and team account management.
Next.jsMongoDBTailwind
taskflow.tarunjawla.com
TaskFlow
Team Management System
Full-stack team management system — task tracking, attendance, SOD/EOD reporting, CSV/Excel exports. Built with Next.js, NestJS, PostgreSQL. Live in production.
Next.jsNestJSPostgreSQL
Writing
From the trenches
Architecture decisions, problems solved, and system design stories from building real-world products.
Jun 23, 2026
7 min readThe Day Azure Put Our Database in Read-Only Mode
When Sentry lit up with read-only transaction errors across multiple services, the culprit was not Prisma or credentials — Azure had locked the database after storage ran out.
PostgreSQLAzureInfrastructure
Read article
Jun 17, 2026
8 min readExtracting a Python Data Processor Into a Dedicated Service
Phase 1 moved decoding off the API — but the backend worker still ran Python inside NestJS. Here is how I extracted the decoder into its own service with artifact contracts and independent scaling.
ArchitectureBackendMicroservices
Read article
Jun 13, 2026
6 min readMoving Heavy Decoding Out of the API: A System Design Story
How we went from API timeouts and 502 errors to a system that reliably handles thousands of sync operations — by decoupling heavy decoding into async background workers.
ArchitectureBackendSystem Design
Read articleExperience
Work experience
From intern to full-stack engineer — each role shaped how I think about building software that scales.
- Developing Clairity QMS Platform for FDA compliance and internal quality management
- Building mobile features using React Native (Expo) with strict TypeScript
- Implementing secure, local-first architecture with on-device data ownership principles
- Contributing to web applications and internal admin tools using React + TypeScript
- Integrating backend services (Firebase / REST APIs) with focus on reliability and data integrity
CH
Timeline
Apr 2026 – Present
1 mo
Full Stack Engineer
CurrentFull-timeClair Health
Jaipur, India · Remote
Building core software systems at a wearable-focused women's health startup.
- Developing Clairity QMS Platform for FDA compliance and internal quality management
- Building mobile features using React Native (Expo) with strict TypeScript
- Implementing secure, local-first architecture with on-device data ownership principles
- Contributing to web applications and internal admin tools using React + TypeScript
- Integrating backend services (Firebase / REST APIs) with focus on reliability and data integrity
React NativeExpoTypeScriptReactFirebaseNode.jsBLE
CH
Feb 2026 – Apr 2026
3 mos · Part-time
Part-time engagement before transitioning to full-time.
WF
Software Engineer
Full-timeOct 2024 – Feb 2026 · 1 yr 5 mos
Jaipur, India
Full-stack development on international client projects using modern web technologies.
WF
Software Development Intern
InternshipAug 2024 – Sep 2024 · 2 mos
Jaipur, India · On-site
Interned and transitioned to a full-time role within 2 months.
FL
Freelance Software Engineer
Self-employedMay 2024 – Jul 2024 · 3 mos
Remote
Worked with domestic and international clients (Italy, US), delivering full-stack web solutions end-to-end.
CG
Timeline
Oct 2023 – Dec 2023
3 mos
Programmer Analyst Trainee
InternshipCognizant
Pune, India · On-site
Trained as a programmer analyst in an enterprise software environment.
Why work with me
Built different, shipped right
Not just another developer. Here's what you actually get when we work together.
Latest Tech
Clean Code
Performance
Responsiveness
Async & Timezone-Ready
Quality First
Latest Tech
Production stacks that stay sharp — React, Next.js, NestJS, TypeScript on cloud-ready infrastructure.
ReactNext.jsNestJSAzure
Next.js
React 19
Clean Code
Linted, tested, typed, and documented — hand-off ready from day one, not an archaeology dig later.
TypeScriptESLintPrettierJestCI/CD
overview.tsx
export function Overview() { return <Layout>...</Layout> }
All checks passed (Build · Lint · Test)
Performance
Architecture that respects Core Web Vitals — pruning bundle weight, caches, queries, and images before polish.
SpeedSEOCore Web Vitals
95/ 100 score
Responsiveness
Mobile-first flows that scale cleanly to tablet and desktop — no fragile breakpoints or phantom scrollbars.
MobileTabletDesktop
Async & Timezone-Ready
Work fully async with US and EU teams — already doing it daily at Clair Health. No handholding, no timezone friction.
AsyncRemoteUS & EU
95/ 100 score
Quality isn't a feature. It's the baseline.
Every engagement ships with sane defaults: reviews that catch regressions early, architectures that tolerate growth, and tooling that stays maintainable past v1.
Best Practices
Followed religiously
Scalable Architecture
Built for growth
Reliability First
Tested & monitored
How I work
How I transform ideas into scalable digital products.
Structured enough to stay on track. Flexible enough to adapt. Every step built around delivering something that actually works.
From understanding the problem to shipping a solution that scales — this is my end-to-end approach.
- Clean architecture
- Scalable systems
- Fast iteration
- Production-ready delivery
Research
Strategy
Build
Launch
01
Discovery & Research
Understand goals, users, constraints and technical requirements before implementation.
User InterviewsScope DefinitionTech Audit
02
Strategic Planning
Define architecture, roadmap, timelines and scalable technical direction.
ArchitectureMilestonesTech Stack
03
Design & Build
Build clean, performant and production-ready systems with modern technologies.
System DesignDevelopmentIntegration
04
Test, Launch & Iterate
Deploy, monitor, optimize and continuously improve after launch.
TestingDeploymentOptimization
What I offer
My services
From architecture to deployment — I build scalable systems designed for production.
Available for freelance projects and part-time contract engagements.
Frontend
Backend
Database
What I offer
My services
Available for freelance projects and part-time contract engagements.
Full Stack Systems
End-to-end web applications built with React, NestJS and PostgreSQL — from API design to cloud deployment.
AI Agents
I build and deploy production AI agents for companies and startups — workflow automation, custom LLM integrations, and tools that ship to real users.
Cross-Platform Apps
React Native. Fast, native and production-ready mobile experiences.
UI Engineering
From Figma to flawless interfaces. Clean, modern and user-focused.
Cloud & DevOps
Scalable infrastructure with AWS, Docker, Kubernetes & CI/CD pipelines.
Architecture & Scaling
Architecture planning, tech audits and strategy that drives results.
LET'S CONNECT
Get in touch
Have a project in mind or just want to explore possibilities? Drop me a message — I usually respond within 24 hours.
Location
Jaipur, Rajasthan, India
Contact details
Email
tarun@tarunjawla.comLocation
Jaipur, Rajasthan, India
What I offer
- Freelance Project Delivery
- Web Development & Design
- AI Agents
- Mobile App Development
- Cloud & DevOps
- IT Consulting & Strategy