Trei freelance services

Senior app rescue.
Direct answers.

Work directly with one senior developer who can diagnose the problem, build the repair, manage the release and stay accountable after launch.

Discuss your project

Best for inherited mobile apps, release blockers, backend repairs and production issues that need practical ownership.

Starting points

Clear starting points before a scoped quote.

These are client-building rates for focused freelance engagements. Final scope, milestones and delivery dates are agreed after discovery.

Default hourly rate
$22/hour

For defined senior development and diagnosis work.

App rescue audit
$99 from

Rapid diagnosis, risk map and a practical fix plan.

Release readiness
$249 from

Build, signing, store and production-readiness review.

RevenueCat, AdMob & analytics rescue
$349 from

Monetization, events and crash-signal integration repair.

Backend/API rescue sprint
$499 from

Focused Node, Express, MongoDB or Firebase repair work.

Ongoing maintenance
$299/month

Up to 12 hours for fixes, releases and production follow-through.

Where I help

Start with the bottleneck, not a vague rebuild.

Each engagement begins with a small, testable first step. That keeps inherited systems understandable and gives you a decision point before wider work begins.

01

Mobile app rescue

Flutter, Android/Kotlin and iOS diagnosis for crashes, broken flows, integration drift, unstable builds and inherited codebases.

Audit or fix plan

02

Backend & API rescue

Node.js, Express, MongoDB, Firebase Auth and API repair when the app and server need to be understood together.

Bounded sprint

03

Release readiness

Play Store and App Store release blockers, CI/CD, signing, crash triage and production checks before a risky submission.

Readiness review

04

Subscriptions, ads & analytics

RevenueCat, AdMob, event tracking, Crashlytics and reporting paths that need a reliable technical implementation.

Integration rescue

05

Production maintenance

Ongoing triage, releases, monitoring and small improvements when you need continuity without adding agency layers.

Monthly support

Relevant proof

Product work informs the service work.

I build and operate mobile and web products, so the offer is designed around the realities of releases, monetization, observability and production ownership.

See public product work

Capabilities

  • Flutter
  • Android / Kotlin
  • iOS
  • Node.js / Express
  • MongoDB
  • Firebase Auth
  • RevenueCat
  • AdMob
  • Analytics / Crashlytics
  • CI/CD
  • Production monitoring

How an engagement runs

A clear path from diagnosis to a useful next decision.

  1. 01

    Diagnose

    Review the visible issue, existing evidence and business goal. Identify what is known, unknown and risky.

  2. 02

    Define first milestone

    Turn the diagnosis into a small, verifiable first deliverable with practical acceptance criteria.

  3. 03

    Build & verify

    Implement the agreed work, test the critical path and document the operational hand-off.

  4. 04

    Maintain or hand over

    Continue through a maintenance retainer or leave the project with a clear technical record.

Working boundaries

Clear scope protects both sides of the work.

  • I do not guarantee store approval, revenue, rankings or a fixed outcome before scope is confirmed.
  • I do not request credentials, private code or client data before there is a defined engagement and an appropriate access path.
  • Offers, contracts, delivery dates and legal terms are reviewed before work begins.
  • Every recommendation is based on the evidence available at discovery, not assumptions about your product or customers.

Questions

Before we start.

Can you take over an inherited app?

Yes. The first step is usually an audit that identifies the current state, the highest risks and the smallest sensible repair milestone.

Do you work only on mobile apps?

No. The value is in joining mobile, backend, monetization, analytics, release work and production operations where they meet.

Can we start with a small engagement?

Yes. An audit, release-readiness review or bounded backend repair is often the best way to establish the real scope.

What do you need before giving a final quote?

A short description of the problem, the platform or stack involved, what has already been tried and the next decision you need to make.

Start a conversation

Bring the issue, not a perfect brief.

Share the app or backend context, the current blocker and the outcome you need to decide next.

Email the project context Discuss on WhatsApp