Mobile Engineer

Salary: £63,000 - 103,000 per year

Requirements:

• We expect hands-on experience developing and shipping Kotlin Multiplatform (KMP) projects, including shared business logic and platform-specific implementations.
• We expect a strong background in either Android (Kotlin) or iOS development with an understanding of mobile app architecture patterns.
• We expect experience building SDKs, libraries, or frameworks that other developers consume, with a focus on API design and developer experience.
• We expect an understanding of payments, NFC technology, financial transaction processing, and banking.
• We expect advanced Kotlin expertise, including language features, coroutines, and multiplatform-specific APIs.
• We expect an understanding of shared code strategies, expect/actual patterns, and platform-specific implementations.
• We expect experience with RESTful services, secure communication protocols, and third-party API integration.
• We expect strong testing practices, including unit testing, integration testing, and automated testing frameworks.
• We expect awareness of secure coding practices, especially for financial and payment applications.
• Preferred: experience with payment processing systems, EMV standards, or financial technology.
• Preferred: knowledge of NFC technology, contactless payment protocols, or mobile payment frameworks.
• Preferred: background in modular architecture, dependency injection, and clean architecture principles.
• Preferred: experience with CI/CD pipelines and automated deployment for multi-platform projects.
• Preferred: experience with design tools such as Figma and Canva.
• Preferred: strong organisation, project management skills, communication, collaboration, and a growth mindset.

Responsibilities:

• We develop cross-platform mobile applications using Kotlin.
• We write clean, maintainable, and secure code to solve complex business problems.
• We prioritise performance, scalability, and maintainability in our development work.
• We integrate APIs and SDKs, ensuring reliability and efficiency.
• We focus on delivering a modern, intuitive, and user-friendly experience for merchants across Europe.
• We collaborate with cross-functional teams to align technical solutions with business objectives.
• We participate in architecture design, framework selection, and tool evaluation.
• We mentor and support team members in a collaborative, growth-oriented environment.
• We continuously improve applications and apply automation best practices to reduce waste and error.
• We work within Agile/Scrum methodologies to support timely delivery, iterative improvements, and collaboration.
• We build mobile applications that support payments acceptance, business account services, card issuing, and ePOS systems.
• We incorporate technologies for offline capabilities, secure data storage, push notifications, and deep linking.
• We ensure seamless app upgrades and support internationalisation and localisation.
• We collaborate with design and product teams to deliver a compelling user experience.
• We contribute to CI/CD pipelines, scalable logging, and observability practices.
• We embrace clean architecture principles across Domain, Application, Infrastructure, and Presentation layers.
• We participate in daily stand-ups, sprint planning, and retrospectives.
• We work with Product Owners to refine requirements and deliver incremental value in each sprint.

Technologies:

• API
• Android
• CI/CD
• Figma
• Support
• Kotlin
• Mobile
• NFC
• iOS
• Hardware

More:

We are Teya, building a financial platform for local businesses across Europe. We believe cafés, restaurants, salons, shops, and entrepreneurs deserve simple tools, thoughtful design, and real human support. Our mission is to help Members run their businesses with confidence and rediscover the joy of running them. This is a full-time, hybrid Engineering role based in Porto, London, or Riga. We offer flexible working hours, health insurance, meal allowance, 25 days of annual leave plus bank holidays, a public transportation card, frequent team events and activities, daily office snacks, and a friendly, comfortable, and informal office environment. We are committed to inclusion, equal opportunity, and reasonable adjustments throughout the recruitment process.

last updated 36 week of 2026