I build mobile products and the systems behind them. I have 4+ years of professional experience, strongest in Flutter/Dart, with React Native/Expo and custom Swift/Kotlin platform integrations.
At Sapphire Software Solutions, I managed development and maintenance across 20+ cross-platform projects. My current work combines hands-on engineering with requirements, stakeholder discussions, delivery coordination and operational support.
Portfolio · LinkedIn · Email
Based in Ahmedabad, India · Open to remote mobile and product engineering roles
| Product | My ownership and engineering work |
|---|---|
| Valmont Security | Independently own mobile/full-stack engineering and technical support for a workforce platform. Flutter iOS/Android app, Next.js dashboard, Node.js APIs and PostgreSQL/Prisma. NFC attendance and patrols, GPS, SOS, messaging and push notifications. Custom native screenshot-event bridges, animated tab transitions and Reduce Motion support with focused widget tests. |
| WorkPilot | A Valmont project. Sole/lead engineering ownership of field-service and compliance workflows. Flutter field app and backend integrations for jobs, reports, notes and media. Persistent offline submissions survive restarts, process in order and expose pending/retry/error states; large payloads use application-support files. Product |
| CryptoSe — pre-launch | Hands-on technical and delivery lead across a React Native/Expo app, TypeScript API and Next.js dashboard, alongside staff coordination and stakeholder meetings. QR payments, quote/confirmation/status flows, payment links and session handling; concurrency controls and durable completion processing. EAS/GitHub Actions release configuration, Fastlane lanes, Maestro flows and Sentry. The product is in development; no live end-to-end launch is claimed. |
At Synccipher Innovations Pvt. Ltd. (Aug 2024–Jan 2026), I worked on KnectHotel, WheelstoVet, Food Scan Genius, Coocicoach, TaskaPro and Speak Pro AI, spanning hospitality, pet services, wellness, sports/AI, marketplaces and EdTech/AI.
Flutter wearable application connecting a smart ring through Bluetooth Low Energy (BLE). My work includes health-data views, wellness trends, an in-app AI chatbot and a modern mobile interface, alongside Apple Health, Google Health Connect and Strava synchronization. Project summary
- Take responsibility across interfaces, API contracts, persistence, deployment and support.
- Make loading, empty, error, offline and retry states part of the product.
- Balance interface polish with reliability and accessibility.
- Coordinate stakeholders and staff while remaining hands-on with implementation.
Mobile: Flutter, Dart, React Native, Expo, TypeScript, GetX, Provider, Swift/Kotlin platform integration
Backend & web: Node.js, Express, Hono, PostgreSQL, Prisma, Redis, Next.js, React
Quality & delivery: Flutter widget tests, Maestro, Sentry, GitHub Actions, EAS, Fastlane, Firebase, Socket.IO
Current learning and development: Python/FastAPI backend and AI-agent workflows for the CryptoSe client; this work is not live.
- Valmont Security Ltd — Software Developer & Technical Support Specialist; mobile and full-stack responsibilities including WorkPilot · Feb 2026–Present · UK team, remote from India
- Synccipher Innovations Pvt. Ltd. — Software Developer · Aug 2024–Jan 2026
- Sapphire Software Solutions — Flutter Developer · Aug 2022–Jul 2024 · Emerging Star Award
B.Tech., Information Technology — Silver Oak University, 2020–2024
The broader archive below includes anonymized client case studies. Case-study repositories describe work and architecture; they should not be mistaken for public production source code or proof of download/revenue metrics. Private client source remains private.
AI & SaaS (14)
- AI Voice Calling Agent — Automated outbound voice conversations powered by Vapi and LLM orchestration.
- AI CRM Copilot — Embedded AI assistant inside a CRM that reduces manual data entry and improves sales follow-through.
- Multi-Tenant AI Chatbot SaaS — White-label chatbot platform letting businesses deploy branded AI assistants trained on their own docs.
- AI Skincare Analysis App — React Native wellness app that analyzes skin photos with AI and recommends personalized routines.
- AI Exam Paper Solver App — App that uses AI to solve exam papers and walk students through step-by-step explanations.
- AI Call Intelligence Platform — Platform analyzing call recordings/transcripts with AI to surface insights and intelligence.
- AI Virtual Try-On App — App using Gemini vision models to let users virtually try on clothing/products from photos.
- Local LLM Chat Experiment — Technical experiment running a small local LLM (TinyLlama) for chat, exploring on-device/self-hosted inference.
- AI Homework Helper — React Native app that helps students solve homework problems with step-by-step AI explanations.
- AI Exam Paper Generator App — EdTech app generating exam papers/practice material with AI.
- AI Food/Nutrition Scanner App — Wellness app that scans food to provide nutrition insights.
- AI Sports Coaching App — Flutter app analyzing training video with AI for sports coaching feedback.
- AI Public Speaking Coach App — AI-powered app coaching users on public speaking skills.
- Business Productivity App — Flutter app with AI-assisted business productivity features.
Full-Stack Platforms (9)
- Security Workforce Management Platform — Multi-tenant SaaS for private security agencies to manage officers, sites, shifts, patrol, attendance, incidents, and billing.
- Field Service Management Platform — Job scheduling and technician tracking platform for field service dispatch teams.
- Mobile Repair Shop Management System — Management system for mobile phone repair shops — job tracking, inventory, and customer records.
- Manufacturing ERP Platform — Generic manufacturing ERP covering batch management, formulas, quality control, and compliance.
- EdTech Learning Platform — Learning platform for students, covering course content and progress tracking.
- B2B Trade Directory Platform — Directory platform connecting regional buyers and suppliers for B2B trade.
- Hospital Management System — Role-based platform handling patient records, lab orders, pharmacy inventory, billing, and analytics dashboards.
- Education App (Flutter + NestJS) — Education app with a Flutter frontend and a NestJS backend.
- Stock Trading Mobile App — Cross-platform app for retail stock trading and portfolio tracking.
Mobile Apps (24)
- Travel Planning App — Mobile app for planning trips and itineraries.
- On-Demand Handyman Services App — App connecting customers with on-demand handyman/home-repair services.
- Dental Clinic Services App — App for booking and managing dental clinic services.
- Card Scanning Utility — Utility for scanning and extracting data from physical cards (e.g. business/ID cards).
- Task-for-Reward Marketplace App — Marketplace app where users complete small tasks in exchange for rewards.
- Logistics & Delivery App — App for managing logistics and last-mile delivery operations.
- Trionyx Business Helper — Small business management helper app, built under Darshil's own company (Trionyx).
- Frontend Mobile Application — Client-side mobile application.
- Hotel Guest Experience App — Guest experience super-app for hotels — in-stay chat and QR-based WiFi access.
- Mobile Vet Services App — On-demand mobile veterinary services app.
- Wearable Health Tracking App — App pairing with a smart ring wearable for real-time body metrics.
- Social Networking App — React Native social networking app.
- Freelance Task Marketplace App — Marketplace app connecting freelancers with local tasks.
- Social Chat App — Flutter social chat application.
- Productivity Notes App — Flutter productivity/note-taking app.
- Marine Navigation App — Flutter app for marine trip/float plan navigation.
- Personal Finance Tracker App — Flutter app for tracking personal spending.
- Occupational Health App — Flutter app supporting occupational health services.
- Wellness App — Flutter wellness/lifestyle app.
- Math Learning App for Kids — EdTech Flutter app teaching math to children.
- School Management App — Flutter app for K-12 school management.
- Grocery Delivery App — Flutter e-commerce app for grocery/vegetable delivery.
- K-12 Tutoring App — EdTech Flutter app for K-12 tutoring services.
- School Administration App — EdTech Flutter app for school administration.
Web & Tools (20)
- Crypto-to-UPI Mobile Product — Pre-launch — React Native/Expo mobile and API work in development; intended wallet model under review.
- ATS-Friendly Resume Builder — Tool that helps job seekers build resumes optimized for ATS scans.
- Ayurvedic Body-Type Decoder App — Quiz-driven app to identify Ayurvedic body type (Prakruti).
- Education Coaching Center Website — Marketing and enrollment website for a tutoring business.
- 3D Digital Craft Studio Site — Cinematic marketing site with canvas-based 3D visuals.
- Personalized Diet Guide App — Personalized diet and nutrition guidance.
- Yoga & Wellness App — Guided yoga practice and wellness tracking.
- Devotional / Spiritual Chat App — Chat-style app for spiritual/devotional content.
- Ayurvedic Wellness App — Ayurvedic wellness guidance and recommendations.
- Business Workflow Automation App — Automates recurring business workflows.
- LinkedIn Growth Automation Tool — Automates LinkedIn engagement and growth workflows.
- Fashion E-Commerce Storefront — Storefront for a fashion/apparel retail brand.
- Pediatric Growth Tracking App — Child growth metrics against pediatric scales.
- Expense Splitting App — Splitting shared expenses among groups.
- Video Calling SDK Integration — Client + server video calling SDK integration.
- Fantasy Sports League App — Creating and managing fantasy sports leagues.
- Pharmacy E-Commerce App — Ordering pharmacy/health products.
- Realtime Chat App (Supabase) — Realtime chat on Supabase Postgres.
- Frontend Client Application — Client-side web application.
- Patient Healthcare App — Full-stack healthcare app for patient-facing workflows.