1️⃣ Quick intro ⚡
✅ Senior Flutter developer with 6+ years building cross-platform mobile apps for iOS, Android, and Web.
✅ Shipped a Flutter digital wallet that scaled from 0 to 500,000+ active users with zero security breaches and a 4.5-star rating.
✅ Trusted to build apps for products backed by Reddit's co-founder, top Silicon Valley VCs, and a Nobel Prize-winning economist.
✅ 5-star rated on long-term Flutter contracts, with clients calling my work "Highly recommended. A++".
✅ Led and mentored development teams, including a team of 10+ engineers.
✅ A big fan of clean, readable code: reactive programming, composable UI, TDD, immutable data, single source of truth, and clean architecture.
2️⃣ Flutter and Dart 🎯
✅ Expert in the Dart language, the Flutter framework, design patterns, and native code on Android and iOS.
✅ State management and architecture: Bloc, Riverpod, Provider, get_it, clean architecture.
✅ Beautiful, responsive, pixel-perfect UI and smooth animations at 60fps.
✅ Networking and data: Dio, Retrofit, REST APIs, GraphQL, WebSockets, Socket IO.
✅ Firebase suite: Auth, Firestore, Storage, real-time database, Cloud Functions, push notifications, Crashlytics, analytics.
✅ Offline-first apps with local persistence and reliable sync.
✅ Payments and FinTech: Stripe, payment gateways, secure storage, encryption.
✅ Background services, isolates, sensors, in-app purchase, social media integration.
✅ Location tracking, geolocation, and map integration with Google Maps.
✅ Media processing: audio and video editing with FFmpeg.
✅ TDD with unit and widget testing (Mockito).
✅ CI and CD with Fastlane, shipping to the App Store and Google Play.
✅ Multiple Flutter apps built from scratch to the app stores.
3️⃣ Selected work 🚀
✅ Moru Digital Wallet: Flutter FinTech app, 500K+ users, offline-first, zero breaches, 4.5 stars.
✅ Transform The Day: AI marketing app with OpenAI content generation and Instagram scheduling.
✅ SAWA: community fintech app backed by top VCs and a Nobel-laureate board, with real-time chat and lending.
✅ Hye-Connect: social media app with GraphQL real-time chat and social engagement.
✅ Location-based review app for movies, hotels, and restaurants with geolocation and interactive maps.
4️⃣ Backend when you need it 🔧
✅ I also build the backend behind the app with Node, NestJS, Express, PostgreSQL, MongoDB, Redis, and AWS.
✅ That means I can own your mobile project end to end, so you are never stuck waiting on someone else's API.
5️⃣ Why hire me ❓
✅ A curious, honest, and self-motivated engineer who communicates clearly and gives you regular updates.
✅ Experience across FinTech, Social Media, AI, Marketing, and Media apps, with proven scale to 500K+ users.
✅ I deliver fast, robust, well-architected code that is clean, testable, and built to scale.
✅ I think like a product owner, not just a coder, and put myself in your shoes to build something that actually succeeds.
✅ Seems like the developer you were looking for? Let's connect. I am happy to exchange ideas, share experience, and give you a free feasibility check on your project.
Firebase
Kotlin
Python
Node.js
Fastlane
Android
User Authentication
Dart
Flutter
TypeScript
Nischal J.
Kathmandu, Nepal
$25/hr
5.0
24 jobs
Unity Game Developer || Multiplayer Game Expert || AI Integration || XR Development
With over 5 years of experience developing Unity games and applications in C#, I’ve successfully delivered 100+ projects across platforms such as the Meta Store, Steam, Google Play, and the Apple App Store. My extensive background includes Multiplayer Games, Mobile, PC/Mac, and WebGL.
Why Work With Me?
✅ Technical Proficiency:
My skill set covers a wide range of technologies and tools, including:
• AI and Speech Technologies: Text-to-Speech, Speech-to-Text implementations, and AI NPC interactions using GPT-based integration
• Multiplayer & Backend Integration: Photon PUN, Photon Fusion for multiplayer networking, PlayFab and CBS for leaderboards, secure login, data storage, and matchmaking
• Cloud Services & Backend: Firebase for real-time databases, cloud-hosted services, and Azure for scalable cloud solutions
• Game Development Frameworks: Universal Fighting Engine 2 (UFE2) for combat mechanics, Car Racing Systems for realistic vehicle simulations, and full-body VR character animations for immersive movement
• In-App Purchases & Monetization: Seamless integration of in-app purchases, ads, and other monetization strategies for mobile and web-based games
• Custom APIs & Cross-Platform Integration: Integrating REST APIs to enhance game features and functionality across multiple platforms
✅ Proven Client Satisfaction:
Clients appreciate my dedication to quality and attention to detail. Here’s what one of my clients said:
“Nischal is an incredible Unity developer! 🎮 His skills in C#, game development, and object-oriented programming are top-notch. He nailed the project with in-app purchases, AR applications, and multiplayer features using Photon Unity Networking. He’s fast, efficient, and handled every bug fix like a pro. Highly recommend for any mobile or WebGL game development! 🚀”
✅ Specialized Skills:
• Development of AI NPCs with real-time conversations for lifelike gameplay interactions
• Creating immersive full-body and half-body VR character animations for a seamless user experience
• Physics-based simulations for racing, combat mechanics, and interactive gameplay
Partner with me and you'll enjoy:
🎉 Daily updates, stay informed about project progress every day.
🎉 24/7 accessibility: Reach me anytime via email or phone.
🎉 Risk-free: Your satisfaction is guaranteed with a full refund if you're not delighted with the results.
💡 Let’s Turn Your Vision Into Reality!
If you’re looking for a Unity developer to bring your game or application concept to life, let’s connect! Send me a message, and we can start building your next groundbreaking project today.
This version incorporates your suggested opening and aims to be more direct while including all your diverse expertise and specialized skills. It’s focused on being clear, keyword-optimized, and client-oriented.
Game
C#
Unity
In-App Purchases
Online Multiplayer
Mobile Game
Game Development
Object-Oriented Programming
Prototyping
Photon Unity Networking
AR Application
In-Game Advertising
Programming Bug Fix
WebGL
Board Game
Arun P.
Kathmandu, Nepal
$25/hr
4.9
13 jobs
I help teams turn Unity projects into working, scalable, and shippable games, whether it’s a new idea, a prototype, or a project that’s stuck.
I’m a Senior Unity Developer with 8+ years of experience across mobile, PC, and WebGL, working on real production games used by thousands of players.
What I do best:
• Build complete gameplay systems (not just scripts)
• Turn prototypes into production-ready code
• Fix performance issues and crashes (when needed — not my main pitch)
• Implement monetization (Ads, IAP, LiveOps)
• Clean and structure messy Unity projects
I’ve worked in startup environments for 7+ years, which means:
→ I can jump into incomplete projects
→ I can make decisions, not just follow tasks
→ I focus on shipping, not just coding
Selected work includes:
• Mobile games with 5M+ downloads
• Steam titles (full gameplay + systems)
• Multiplayer + backend-integrated projects
If your project is:
• Half-built
• Not scaling properly
• Needs to go from idea → playable fast
I can step in and move it forward quickly.
Let’s build something that actually ships.
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
KD
Kim Darling
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
DM
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
KK
Katja Krohn
Summa Linguae
How do I hire a Facebook Games Developer near Kathmandu, on Upwork?
You can hire a Facebook Games Developer near Kathmandu, on Upwork in four simple steps:
Create a job post tailored to your Facebook Games Developer project scope. We’ll walk you through the process step by step.
Browse top Facebook Games Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Facebook Games Developer profiles and interview.
Hire the right Facebook Games Developer for your project from Upwork, the world’s largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Facebook Games Developer?
Rates charged by Facebook Games Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Facebook Games Developer near Kathmandu, on Upwork?
As the world’s work marketplace, we connect highly-skilled freelance Facebook Games Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Facebook Games Developer team you need to succeed.
Can I hire a Facebook Games Developer near Kathmandu, within 24 hours on Upwork?
Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Facebook Games Developer proposals within 24 hours of posting a job description.