We help teams build and improve Android apps, web frontends, and connected-device software. Our work combines deep Android and Kotlin Multiplatform expertise with practical frontend delivery.
Took over the app, rebuilt the UI, and improved BLE-related logic for a Kotlin Multiplatform product shipping to Android and iOS.
Built three apps from scratch for a custom Android device, with accessibility, security, testing, and internationalization built in.
Contributed to a high-security Android platform and reduced Gradle build times by around 50% and total CI/CD pipeline time by around 60%.
Supporting logistics-focused Android delivery through automated testing, process improvements, and knowledge sharing in a multi-app environment.
“James has been supporting our mobile team for almost 2 years now, and I couldn't be happier with the decision to hire him. He is an absolute Android expert and possesses an outstanding foundational understanding of programming and quality management.”
“James demonstrates a high level of expertise in Android programming. He has a remarkable ability to modernize and extend our established Java codebase, apply modern best practices to it, and gracefully migrate it to Kotlin.”
“He possesses a very broad and in-depth knowledge of UI testing and its associated infrastructure. He applied this knowledge intensively to significantly advance code coverage.”
“James brings holistic expertise in IT to table. His ability to work himself into any stack and solve any problem is a rare skill set. He also helped us to improve our existing processes and introduce new ones enabling us to improve quality and efficiency of team collaboration.”
“James is not only a top-notch Android developer but also an exceptional team player. His ability to review code, provide insightful feedback, and teach best practices is truly remarkable.”
“Due to his high level of technical expertise, his dependable and fast assistance, and his ability to convey complex technical concepts with precision, we decided during the course of the project to entrust him with further development of the app.”
We usually get brought in for Android, connected products, and delivery-critical engineering work, but we also cover the surrounding platforms needed to ship complete products.
Kotlin, Java, Jetpack Compose, app architecture, modernization, performance, and production support.
Device integrations, sensors, companion apps, platform communication, and the software around connected hardware.
Shared business logic, cross-platform codebases, and pragmatic KMP/CMP adoption for teams scaling across platforms.
Native mobile support across iPhone, Apple ecosystem work, and Android wearable experiences where the product needs it.
Product websites, responsive frontends, and web features using modern JavaScript frameworks such as React and Vue.
Secure APIs, integrations, backend services, and the surrounding platform work needed to ship complete products.
Native Android work across consumer apps, AOSP-based systems, custom devices, and rugged enterprise hardware.
Apps that configure devices, read live data, support installers, and connect hardware with users and backend systems.
Taking over shared codebases, improving architecture, and keeping cross-platform foundations maintainable over time.
Secure implementation, accessibility awareness, and automated testing for products where quality is part of the core requirement.
Product websites, web applications, and frontend features, with APIs and integrations to connect the product.
Taking over existing systems, reducing delivery friction, and improving build, release, and architecture stability.
Experience across connected products, specialized devices, and the apps teams rely on every day.
From a focused architecture review or workshop to ongoing product delivery, we fit the support to your team. Modernize an existing app, solve device integrations, or add senior capacity where delivery needs it most.
We step into active products and existing teams to add senior engineering capacity, unblock delivery, and keep shipping moving.
We assess legacy or unstable systems, identify the highest-value changes, and modernize them without bringing roadmap work to a halt.
We help teams move from Java to Kotlin, replace outdated libraries, and modernize codebases in controlled steps that do not derail delivery.
We improve test strategy, release workflows, automation, and CI/CD so teams can ship with less friction and more confidence.
We help teams level up through targeted workshops, engineering guidance, and practical knowledge sharing tied to real delivery work.
We step in when delivery is under pressure, quality is slipping, or systems have become fragile and need steady technical leadership.
We start with a focused conversation to understand the product, the blockers, the risk areas, and what success should look like.
We define the scope, the priorities, and an initial deliverable that proves direction early, whether that is architecture, testing, or a working feature slice.
Delivery stays visible through steady progress, direct communication, and documented decisions rather than surprises at the end.
We work mostly remotely, with onsite visits or workshops where useful, and leave teams with clear documentation, context, and ownership.
Our own apps and games keep us close to the practical decisions behind building, shipping, and supporting a product.
A family adventure made with my sons, Leo and Ian.
Everyday chores become stars, routines and family rewards.
Keep track of the things you want to check, without the mental list.
A real-world map becomes a place for encounters and discovery.
Build your team’s skills with structured courses and hands-on training grounded in production Android work.
Hands-on team workshops covering Android security, with practical labs to find vulnerabilities, implement defences, and verify the results.
Explore the trainingLearn Android UI testing with Espresso, networking with Retrofit, and app update workflows through James’s courses on droidcon Academy.
Browse coursesExplore the ideas, examples, and lessons we share with the developer community.
Conference talks and community work, including droidcon.
A short, funny collection of Android stories, production folklore, and the kinds of decisions every mobile team recognises instantly.
Free engineering articles on practical Android topics such as testing, architecture, security, and release workflows.
Read articlesPublic code examples, example apps, and developer tooling to explore and learn from.
Explore public codeTell us what you’re building and where you need support. A few sentences are enough to start.
We can step in for focused consulting, team support, hands-on implementation, or workshops, depending on what the situation calls for.
We work in German and English, mostly remotely, with onsite visits or workshops where useful.
