Services
Hire me for the whole thing, or the part that hurts
These are my live Fiverr gigs. Level 2 seller, 4.9 rating across 65 reviews, 93 orders, 5 years on the platform. Prices shown are the live starting prices; the rest are scoped per order.
from $295Flutter mobile app development
A complete cross-platform app from one codebase: iOS and Android, with the backend, auth and push wired in. Same stack I ship TrackerMax and Spectoria on.
- Flutter app for iOS and Android from a single codebase
- Firebase backend: auth, Firestore, storage, push
- Clean state management and release-ready builds
FlutterDartFirebaseGetX
from $345AI mobile app or website with ChatGPT or Claude
AI features that survive contact with production: streaming responses, usage metering, safe key handling on a server, not in the client bundle.
- AI chat, generation or analysis features in your app or site
- Server-side proxy so provider keys never ship to devices
- Credit or subscription metering if the feature costs money to run
FlutterNext.jsClaudeOpenAIGemini
AI chatbot or AI agent for your business
A chatbot that knows your business, not a wrapper around a system prompt. Grounded on your docs and data, with handoff when it should stop talking.
- Chatbot or agent grounded on your content
- Web widget, WhatsApp or in-app integration
- Admin view of conversations and quality
ClaudeOpenAINode.jsFirebase
AI voice agent or receptionist
Phone and voice agents on Vapi, Retell or custom code. I have shipped real-time voice in production, so latency budgets and barge-in are familiar ground.
- Voice agent that answers, books and routes calls
- Vapi or Retell setup, or a custom WebSocket pipeline
- Call logs and transfer rules you control
VapiRetellWebSocketsNode.js
Stripe, RevenueCat or Polar payments and subscriptions
Billing that reconciles: entitlements, webhooks, refunds and edge cases. I run dual-rail Stripe plus RevenueCat billing into one ledger on Spectoria.
- In-app purchases and subscriptions that pass review
- Webhooks that settle idempotently, no double credits
- Paywall UI and entitlement gating
StripeRevenueCatPolarFirebase
from $65Publish your app to the Play Store and App Store
Store releases without the rejection loop: signing, listings, privacy declarations, review notes. I have shipped my own apps and client apps through both stores.
- Signed builds uploaded to both stores
- Store listings, screenshots and privacy forms done right
- Rejection handling until it is live
App StorePlay StoreXcodeFastlane
from $125Fix bugs, crashes and errors fast
Send the crash log or the broken screen. I find the root cause instead of patching the symptom, and tell you what actually went wrong.
- Root-cause fix with a short write-up
- Crash and error triage from Crashlytics or Sentry
- Regression check before handover
FlutterFirebaseCrashlyticsSentry
Fix and clean your Cursor, Claude or Lovable app
AI-generated codebases usually work until they matter. I untangle the state, remove the dead weight, and leave you something a human can maintain.
- Audit of what the AI actually built
- Refactor of the parts that will break next
- A codebase your next developer will not curse at
FlutterNext.jsTypeScriptFirebase
Bigger than a gig? Retainers and direct contracts happen over email. I have held a Head of Engineering contract with a Hong Kong team, so I know how to behave inside yours.