Freelance Android and Kotlin developer for mobile product work

Senior service for companies and agencies that need Android/Kotlin features, SDKs, KMP or integrations delivered with less release risk.

Discuss Android work See app development

Overview of public work delivered for Arafilum and Integraleón.

Android/Kotlin apps and SDKs.
Product features, architecture and API integration.
Technical QA and release criteria.

Where specialist support helps

This page covers focused Android delivery; recurring maintenance has a separate offer.

Complex mobile feature

Implementation in an existing codebase, architecture, offline states, permissions or sensitive product flows.

Release under pressure

Technical QA, regression control and publication preparation when the cost of error is high.

SDKs and integrations

APIs, examples, contracts and integration documentation that reduce partner support.

What is delivered

A mobile intervention that product, agency and engineering teams can validate and continue.

Implementation

Features, fixes, backend integration or adaptation to the existing application architecture.

Stabilization

Tests, contract review, regression control and closure of release risks.

Continuity

Decisions, tests, pending items and publication criteria documented for the next stage.

Mobile depth with a production exit

Android/Kotlin experience combines with backend and integrations when the app does not live in isolation.

01Reduced regression risk before production.

02Work on sensitive B2B and product flows.

03Ability to connect app, API, SDK and integration support.

Common Questions

The minimum worth clarifying before opening a collaboration.

Can you join an Android app you did not build?+

Yes. I first need a reproducible build, repository access, product context and someone who can validate the delivery.

Do you also cover Kotlin Multiplatform?+

Yes, when shared logic or an SDK creates a real product advantage rather than adding architecture for its own sake.

Is this the maintenance service?+

No. This offer is for focused specialist delivery. Recurring fixes and releases are covered on the Android app maintenance page.

Brief for this landing

Tell me what needs to be resolved.

Objective, current state and timing are enough to assess fit. The route and campaign are attached to the brief without retaining the full URL.

A human reply, normally within one business day.
No automatic addition to marketing lists.
Optional advertising measurement depends on your consent.

A short brief is enough

Name, email and context. Budget, timing and format can be added if you already know them.

Service enquiry for companies and agencies; this is not a job opening.

What context are you writing from?

Agency or studioCompany or SMEProduct teamOther context

Name

Work email

What needs to be resolved

The scope does not need to be perfect. Twenty characters are enough to start.20 more characters needed.

Add buying detailsOnly if you already know them.

Company or studio

Project type

Working model

Indicative budget

Timing

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Anti-spam verification

It will load when you start completing the brief.

Usual reply within one business day.

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