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$
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I will build or fix your swift kotlin react or unity app hourly
Bill V
5.0
5.0
About this gig
I help startup founders and established businesses launch high-quality iOS, Android, Web, and cross-platform apps fast.
As a senior mobile developer, Ive shipped dozens of apps using SwiftUI, React Native, React Web, Kotlin, Unity, Firebase, AWS, and Azure, including an AR app for NASAs Visitor Center at Goddard.
Whether youre building an MVP, adding features, or integrating with cloud services, I bring solo execution and clean delivery. No bloated teams. No hand-holding required.
Recent and notable work:
NASA: Unity-based AR app for iOS and Android
iOS startups: Social and animation-sharing apps
AI integrations: OpenAI, Hugging Face, RAG, and API workflows
React Web apps with backend integrations
AR/VR product visualization tools
Firebase Functions and Azure cloud apps
Published apps on App Store and Google Play
Clients hire me for:
Full app builds from scratch
Debugging and scaling existing codebases
Fast turnaround on scoped deliverables
U.S.-based | Rutgers CS graduate (4.0 GPA) | Available for hourly or fixed-scope work
Why me?
5+ years shipping mobile apps for startups & large businesses.
Deep stack: Swift, Kotlin, React, Typescript, Azure, Firebase, AWS, Unity.
Get to know Bill V
Bill V
Senior Software Developer, SwiftUI, Unity, React, Kotlin, Replit, Node
- FromUnited States
- Member sinceAug 2019
- Avg. response time1 hour
- Last delivery3 months
Languages
English
I help startup founders and established businesses launch high-quality iOS, Android, Web, and cross-platform apps fast.
As a senior mobile developer, I’ve shipped dozens of apps using SwiftUI, React Native, React Web, Kotlin, Unity, Firebase, AWS, and Azure, including an AR app for NASA’s Visitor Center at Goddard.
Whether you’re building an MVP, adding features, or integrating with cloud services, I bring solo execution and clean delivery. No hand-holding required.
Available for:
Full builds
Debug
Scaling
U.S.-based | Rutgers CS graduate (4.0 GPA) | Available for hourly or fixed-scope work
My Portfolio
FAQ
What is your hourly rate?
My standard rate is $150/hr (direct hire, no middleman). Project minimums typically run $5-10k for prototypes, $15k for MVPs/production builds. Contact me for a quote.
Do you work on fixed-price projects or only hourly?
Hourly. Hourly is best for ongoing work, audits, or undefined scope.
What kind of apps do you build?
iOS (SwiftUI), Android (Kotlin), cross-platform (React Native), web (React/Next.js), backend (Firebase, Azure, AWS), AR/VR (Unity), and integrations (Stripe, auth, real-time sync).
How long does a typical MVP take?
12–24 weeks for a production-grade MVP (depending on scope). I focus on clean, scalable code so you avoid expensive rewrites later.
Can you help with existing code (tech debt, refactoring)?
Yes - I specialize in vibe-code cleanup, performance optimization, and production hardening for apps built by junior teams or AI tools.
What’s your availability?
I typically take on 1–2 new clients per quarter. Message me on Fiverr to check current slots.
Reviews
1 reviews for this Gig
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Rating Breakdown
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- Value of delivery
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T tonyla818
United States
Bill exceeded my expectations. I love working with honest and hard working individuals. Looking forward in working with him again.
Up to $50
Price
3 days
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T tonyla818
United States
Bill exceeded my expectations. I love working with honest and hard working individuals. Looking forward in working with him again.
Up to $50
Price
3 days
Duration
Helpful?
