Arjun

Software Engineering Consultant

From idea to (digital) reality

I help startups design and launch AI-powered mobile apps, web app, crossplatform, saas and scalable backend systems using SwiftUI, Python, Firebase, Supabase, aws and FastAPI from concept to production.

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What I ship

Beautiful UX. Serious engineering. A simple interface is the byproduct of thoughtful architecture, I like shipping polished experiences without sacrificing correctness or performance.

Mobile

SwiftUI and native iOS apps with smooth interactions and tight performance budgets.

Full-stack delivery

APIs, auth, storage, AI integration — end to end, production-ready, and maintainable.

Fast iteration

Clear priorities, high-signal communication, and shipping in small, safe slices.

AI & LLM IntegrationiOS & SwiftUI ExpertPython Backend DevelopmentReal-Time SystemsProduction App Experience

Projects

Pick a project to explore the problem, solution, and stack — without the wall of text.

All case studies

AI Image & Video Generation Platform

Senior AI Full Stack Developer

Production-ready AI image and video generation platform with mobile app, backend infrastructure, admin dashboard, and scalable cloud architecture on Google Cloud.

Problem

The product needed a unified way to offer AI-generated images and videos to mobile users, with reliable auth, billing, content moderation, and operations tooling—not a collection of one-off scripts.

Solution

Led full-stack delivery: multi-provider AI generation workflows, Node.js REST APIs, Firebase authentication and data layer, admin panel for users and analytics, subscription payments, and App Store release—deployed on Google Cloud.

  • AI image & video generation workflows
  • OpenAI, Kling AI, Seedance & Nano Banana integrations
  • Node.js backend & REST APIs
  • Firebase Auth & database management
  • Admin panel for users, content & analytics
  • Google Cloud deployment
  • Subscription & payment integration
AI App DevelopmentNode.jsGoogle Cloud PlatformOpenAI APIFirebaseKling AISeedanceNano Banana

Outcome: Shipped a production platform spanning mobile, API, admin, and cloud—ready to scale generation workloads and monetize through subscriptions.

Case Study

AI Wellness App

Senior AI Mobile & Cloud Developer

AI-powered personal growth iOS app with intelligent conversations, ElevenLabs voice experiences, and personalized journeys—built with SwiftUI, Firebase, and Google Cloud.

Problem

Users wanted a wellness companion that felt personal and supportive across chat and voice, with reliable accounts, subscriptions, and data sync—not a static content library.

Solution

Owned end-to-end delivery: SwiftUI app architecture, OpenAI GPT assistant flows, ElevenLabs voice AI, Firebase Auth and Firestore with Cloud Functions, GCP-backed APIs, RevenueCat subscriptions, push notifications, analytics, and App Store launch.

  • OpenAI GPT-powered AI assistant
  • ElevenLabs voice AI integration
  • Firebase Auth, Firestore & Cloud Functions
  • Google Cloud services & scalable backend
  • RevenueCat / StoreKit subscriptions
  • Push notifications & analytics
  • Production-ready cloud architecture
AI App DevelopmentSwiftUIOpenAI APIElevenLabsFirebaseGoogle Cloud PlatformRevenueCat

Outcome: Launched a production iOS wellness product with conversational and voice AI, monetization, and cloud infrastructure built to scale with user growth.

Case Study

Intelligent AI Writing Assistant

Custom iOS keyboard delivering real-time AI writing suggestions powered by LLM services.

Problem

Users needed AI assistance without leaving their typing workflow.

Solution

Integrated LLM APIs directly into a native keyboard extension supported by scalable backend services.

  • Real-time AI suggestions
  • Context-aware generation
SwiftUIFirebaseLLM APIs

Outcome: Low-latency AI typing experience with scalable architecture.

Case Study

AI Fitness Challenge Platform

Fitness app using live camera detection to count push-ups and enable multiplayer challenges.

Problem

Users wanted accurate rep counting and social motivation without wearable hardware.

Solution

On-device Vision framework for pose estimation and rep counting, with Firebase for real-time leaderboards and challenges.

  • Live camera preview
  • Motion detection
  • Multiplayer syncing
  • Leaderboards
SwiftUIVision/MLFirebase

Outcome: Automated workout tracking with real-time engagement.

Case Study

Professional Audio Workflow Tool

Batch audio processing application supporting multi-channel workflows.

Problem

Audio professionals needed to process many files with consistent settings and metadata.

Solution

Native macOS/iOS app using AVFoundation for batch conversion and custom waveform UI for preview and metadata.

  • Batch conversion
  • Multi-channel processing
  • Waveform visualization
  • Metadata export
SwiftAVFoundation

Outcome: Reduced manual processing time for professional audio workflows.

Case Study

Multiplayer Social Game Platform

Room-based multiplayer game with live voting, Firebase syncing, and monetization.

Problem

Client wanted a social, real-time game that could scale and generate revenue.

Solution

Firestore for game state and rooms; Cloud Functions for server-side validation; RevenueCat and AdMob for subscriptions and ads.

  • Room-based gameplay
  • Live voting
  • Firebase syncing
  • Multi-language support
  • Google AdMob monetization
  • Subscription system
  • RevenueCat integration
SwiftUIFirebaseCloud Functions

Outcome: Scalable multiplayer architecture with monetization.

Case Study

Real-Time Ride Management Platform

Ride booking with live GPS tracking, Google Maps, and PayPal payments.

Problem

Drivers and riders needed accurate live location and status updates.

Solution

Socket.IO for real-time events; Google Maps for display and routing; PayPal for payments with server-side verification.

  • Live GPS tracking
  • Google Maps integration
  • PayPal payments
  • Socket-based communication
  • Real-time updates
SwiftSocket.IOGoogle Maps SDK

Outcome: Reliable real-time ride coordination.

Case Study

Screen Time Productivity App

Senior iOS Developer

Production-ready iOS productivity app that helps users reduce screen time and build better digital habits—SwiftUI, FamilyControls, Device Activity, Firebase, and subscriptions.

Problem

People struggled to stick to focus goals because system Screen Time tools were fragmented and apps lacked clear blocking, progress feedback, and a polished daily workflow.

Solution

Delivered complete app development: scalable SwiftUI architecture, FamilyControls and Device Activity for app blocking and focus sessions, Firebase Auth and Firestore, RevenueCat subscriptions, push notifications, Mixpanel analytics, testing, and App Store launch.

  • FamilyControls & Device Activity integration
  • App blocking & focus management
  • Firebase Auth & Firestore backend
  • RevenueCat / StoreKit subscriptions
  • Push notifications & analytics
  • Clean scalable Swift architecture
iOS DevelopmentSwiftUIFamilyControlsDevice ActivityFirebaseMixpanelRevenueCat

Outcome: Delivered a fast, reliable, App Store–ready product that combines native Screen Time APIs with backend sync, monetization, and measurable user behavior.

Case Study

Toolbox

A focused set of tools I’m comfortable shipping with — chosen for reliability, velocity, and UX.

AI & Machine Learning

  • LLM Integration
  • AI Chat Systems
  • Automation Pipelines

Mobile Development

  • SwiftUI
  • MVVM Architecture
  • App Store Deployment

Backend Development

  • Python
  • FastAPI
  • Firebase (Auth, Firestore, Functions)
  • REST APIs
  • WebSockets

Cloud & Real-Time

  • Live Syncing
  • Multiplayer Systems
  • Streaming Architectures

Impact

Work that holds up under pressure — reliability, clarity, and UX all matter.

Startups & MVPs

From idea to first release — clear scope, fast iteration, and production-quality code from day one.

AI-powered products

Apps and backends that use LLMs, automation, and intelligent features without sacrificing reliability.

Production-ready apps

Mobile and backend systems built for scale, security, and real users — not just demos.

About

I take full product ownership from idea to launch. That means defining the product with founders, designing the system, and shipping the mobile app and backend in one flow.

My focus is Python and AI on the backend(FastAPI), LLM integration, automation and native iOS with SwiftUI on the client. I use Firebase and supabase where it speeds up auth and real-time features, and custom services when the product needs more control.

I’m built for MVPs: clear scope, fast iteration, and production quality code from day one. I work best with teams that care about product and technical decisions alike, and I’m comfortable owning both.

What I bring

  • Full-stack product ownership
  • Python + AI backend expertise
  • Mobile-first engineering
  • MVP delivery speed
  • Collaboration with founders

Testimonials

What founders and teams say about working together.

UC
“Amazing experience working with Arjun! He helped us build a multiplayer mobile game MVP from scratch and did an outstanding job. His expertise in SwiftUI and Firebase is top-notch, and he handled complex real-time features perfectly. What I really appreciated was his communication – he was always available to discuss feedback and implemented changes incredibly fast. He is not just a great coder but also a true professional who cares about the project. We are already planning future updates with him. If you need a reliable and talented iOS developer, Arjun is your guy. 10/10!”

Upwork Client

Rated 5 stars · Upwork

Blog

Mixpanel, mobile analytics, and shipping AI-powered products—written for founders and engineering teams.

View all posts →
Mixpanel integration for iOS and Android — track, analyze, grow

Featured · Product analytics

How to build an AI image & video generation app (iOS, Node.js, GCP)

Freelance guide to shipping AI media apps: multi-model integrations (OpenAI, Kling, Seedance), Node.js APIs, Firebase, admin dashboards, subscriptions, and Google Cloud—what founders should plan for.

Read the guide →

Contact

Whether you have a project to build or want a second opinion, I’m happy to talk.

Project inquiry

New build, redesign, AI integration, backend, or mobile — share the requirements and I’ll propose a plan.

NO CHARGE

Free consultation

Stuck on architecture, UX flow, or “what should we build next?” — I’ll help you get clarity.

Let’s build your next AI-powered product.

Schedule a call to discuss your project or get a quick consultation.

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