Live2025
Retail Platform · Mobile App + Admin Dashboard
Peter Fresh
Production app and admin dashboard for a farm-to-consumer store — customers browse live products, prices and stock before visiting.
FlutterNode.jsExpress.jsPostgreSQL
Full-Stack Development✦Mobile Apps✦Backend Systems✦MVP Development✦API Design✦Cloud Architecture✦Product Strategy✦From Concept to Deployment✦Full-Stack Development✦Mobile Apps✦Backend Systems✦MVP Development✦API Design✦Cloud Architecture✦Product Strategy✦From Concept to Deployment✦
01 / The Mission
More Than Just a Developer.
I work at the intersection of engineering and business — designing, building and shipping products that solve real problems. From full-stack web platforms to mobile apps and backend systems serving thousands of connected devices, I own the journey from concept to deployment.
Beyond client work, I build my own products and explore venture ideas. I understand deadlines, budgets and ROI as well as I understand databases, APIs and deployment pipelines.
Full-Stack × Mobile Apps × Backend
terminal
vishal@dev:~$ whoami
full-stack & app developer — web · mobile · backend
vishal@dev:~$ status --now
shipping production apps & systems ▊
1+
Years Professional Experience
Production systems, real users
6+
Projects Delivered
Web, mobile & backend
5,000+
Connected Devices
IoT systems in production
3×
Stack Coverage
Web + Mobile + Backend
Two ways we can work together
For Recruiters & Engineering Teams
Hire an engineer who ships.
- Production experience across mobile apps, backends and IoT systems
- Full-stack ownership — Flutter, React Native, Node.js, PostgreSQL, AWS/GCP
- Real-time MQTT calibration system with 84% success across 5K+ devices
- Shipped 5+ production features at Zimplistic for 5K+ active users
For Founders & Businesses
Build your product with me.
- MVPs taken from idea to production, fast and pragmatically
- Mobile apps, web platforms, APIs and backend systems end to end
- Business-first thinking — scope, budget and ROI, not just code
- Long-term partner for maintenance and iteration after launch
02 / Capabilities
How I Can Help
From a rough idea to a production system — these are the ways I work with teams, founders and businesses.
Full-Stack Development
Scalable web applications, APIs and backend systems — designed, built and shipped end to end.
- Web applications
- REST APIs
- System architecture
Mobile App Development
Production-ready mobile applications with modern cross-platform technologies.
- React Native
- Flutter
- Store deployment
Backend & API Development
REST APIs, databases, authentication systems and backend architectures built to scale.
- API design
- Auth & security
- Database modeling
MVP & Product Development
Turn an idea into a functional MVP — then take it toward production with the right foundations.
- Rapid prototyping
- Product strategy
- Launch support
Freelance Development
Helping businesses and startups build, improve and maintain their digital products.
- Feature development
- Maintenance
- Code rescue
Technical Consulting
Choosing the right technologies, architecture and implementation strategy for your business.
- Tech selection
- Architecture review
- Roadmapping
03 / Featured Work
Selected Work
Production systems, client products and personal builds — each one shipped, each one solving a real problem.
Live2024
On-Demand Services · Mobile App
Apniseva Technician
Cross-platform app connecting users with on-demand service providers — bookings, payments and service inquiries in one flow.
FlutterREST APIsProviderRazorpay
Building2026
Grocery Marketplace · Backend + Mobile
Grosoon
Marketplace connecting customers, shops and delivery partners — with an engine that splits one order across multiple shops by price and PIN code.
Node.jsSupabasePostgreSQLRazorpay
Live2025
HealthTech · Marketplace Backend
Redrabbit Wellness
Diagnostics marketplace backend — compare labs, book slots, manage samples and reports, with EMI plans and automated WhatsApp reminders.
Node.jsNext.jsSupabaseRazorpay
Live2025
AI Mobile App · Full-Stack Solo Build
Recipease
AI-powered recipe discovery — React Native app, Node.js backend and a MongoDB caching layer that answers before ever calling the LLM.
React NativeNode.jsExpress.jsMongoDB
04 / Journey & Experience
My Experience
Not a resume — a journey of shipping real systems, for real users, in production.
Software Engineer — Mobile & Backend
Sep 2025 — PresentZimplistic India Pvt. Ltd.
Building the connected-device experience for Rotimatic — mobile workflows, firmware communication and backend services for 5,000+ devices in production.
- Built the mobile workflow for an intelligent roti quality-correction system — processing computer-vision outputs and sending real-time MQTT calibration commands to firmware
- Engineered a fault-tolerant MQTT framework with intelligent reconnection, offline recovery and state synchronization across 5K+ devices
- Shipped 5+ production features: warranty management, machine diagnostics and device lifecycle workflows
- Developed the Node.js backend on GCP integrating HubSpot chat into the app, with AWS Cognito authentication and API-key secured endpoints
→ 84% correction success rate across 5K+ connected devices
→ Production features used daily by 5K+ active users
FlutterNode.jsMQTTAWS CognitoGCPFirebase
App Developer — Internship
Nov 2024 — Aug 2025Jazzee Technologies
Built the Jazzee EdTech mobile app for iOS and Android — real-time classroom attendance with identity validation.
- Enabled students to mark real-time classroom attendance with secure face validation using QR and non-QR methods
- Integrated attendance tracking with detailed reports, improving transparency and accountability
→ Shipped to both iOS and Android
→ Secure face-validated attendance flow
FlutterREST APIsFirebase
App Development Intern
Apr 2024 — Nov 2024Syflex Techno Solution
Crafted a high-performance eCommerce app in Flutter with extensive API integration.
- Built the eCommerce app with seamless state management and extensive API integration
- Implemented secure payment systems for a reliable checkout experience
- Optimized product management features and app performance
→ +12% app efficiency
→ 10% faster product load times
FlutterREST APIsPayment Gateways
05 / Ventures & Products
Building Beyond Client Work.
I don't only build for others. I run my own products, experiments and business concepts — learning distribution, validation and what it takes to turn software into a company.
Engineer + Builder + Entrepreneur
G
BuildingGrosoon
Founder & Engineer
My own grocery marketplace — a smart allocation engine that splits customer orders across local shops by price and PIN code, with apps for customers, shopkeepers, delivery partners and admins.
Node.jsSupabasePostgreSQLRazorpay
R
LiveRecipease
Founder & Engineer
AI-powered recipe discovery product — LLM-generated structured recipes served cache-first, designed, built and deployed solo.
React NativeNode.jsMongoDBAWS
I
LiveIndependent Engineering Practice
Freelance Engineer
Client work under my own name — production apps and backends for marketplace, retail, services and healthtech businesses.
N
Coming SoonNext Product Concept
Founder
A new product idea currently in validation — talking to potential users before writing production code.
06 / Tech Arsenal
Technologies I Work With
A deliberate, production-proven stack — chosen for reliability, speed of shipping and scale.
26 technologies · 6 disciplines · hover a row to explore
01Languages
JavaScriptJavaDartCKotlinJavaScriptJavaDartCKotlin
02Frontend / Mobile
ReactReact NativeFlutterReactReact NativeFlutter
03Backend
Node.jsExpress.jsSpring BootMQTTNode.jsExpress.jsSpring BootMQTT
04Databases
PostgreSQLMongoDBSupabaseFirebasePostgreSQLMongoDBSupabaseFirebase
05Cloud / Infrastructure
AWSGoogle CloudVercelRenderAWSGoogle CloudVercelRender
06Tools
GitGitHubVS CodeAndroid StudioXcodeExpoGitGitHubVS CodeAndroid StudioXcodeExpo
07 / Problem Solving
How I Solve Problems
Deep dives into real constraints, trade-offs and outcomes — because engineering is decisions, not just code.
Zimplistic — Rotimatic Quality Correction
Real-time calibration across 5,000+ connected devices
01 — Problem
Roti quality drifted across devices in the field, with no closed loop between what the camera saw and what the machine did next.
02 — Requirement
Correct quality in real time across a fleet of 5,000+ connected devices, over unreliable home networks.
03 — Approach
Built a mobile workflow that turns computer-vision output into calibration commands, delivered to firmware over MQTT.
04 — Tech Choices
Flutter for the app, MQTT for real-time device messaging, Node.js on GCP for services, AWS Cognito for identity.
05 — Implementation
Engineered a fault-tolerant MQTT framework — intelligent reconnection, offline recovery and state synchronization for varying network conditions.
06 — Challenges
Keeping firmware communication reliable when home Wi-Fi drops mid-command, without corrupting device state.
07 — Result
84% correction success rate across the 5K+ device fleet, shipped alongside diagnostics and warranty features.
09 / Ecosystem & Impact
Clients & Collaborations
Companies, partnerships and teams I've worked with.
[Client Logo]
[Company Logo]
[Partner Logo]
[Brand Logo]
// Testimonials will appear here — real quotes from real clients only.
Vishal Behera
Engineer × Builder × Entrepreneur
10 / Behind The Code
Behind the Code
I build because shipping something real beats talking about ideas. Every project — client work, freelance gig or my own venture — is an exercise in turning ambiguity into a working product someone can use.
My philosophy is simple: understand the business problem first, choose boring-reliable technology second, and polish the experience until it feels effortless. The best engineering is invisible — it just works.
Long term, I'm building toward running my own product company. Every system I ship and every client I work with is a step on that path.
01
Outcomes over output
Code is a means. Shipped, useful product is the goal.
02
Own it end to end
From database schema to the last pixel — full responsibility.
03
Learn in public
Every project teaches something worth reusing on the next one.
04
Build toward independence
Client work funds the ventures; the ventures fund the vision.
Product designStartupsIoT & hardwareOpen sourceSystem design
EDU
B.Tech, Mechanical Engineering · National Institute of Technology Rourkela · 2021 — 2025
11 / Initiate Contact
Let's Build Something.
Have an idea, project, or business problem you'd like to discuss? Let's talk.