Senior Android Developer

Role: Senior Android Engineer
Location: London (Oxford Circus)
Hybrid: 1 day per week in the office

About Monument Technology Limited

Monument Technology provides everything needed to build and run a bank with an open, configurable, end-to-end, banking platform as a service which uses best-in-class components to empower small and medium-sized banks around the world to thrive in the digital age. Monument Technology takes the proven, end to end platform developed for Monument Bank, the leading bank for the mass affluent, and makes it available to financial institutions in the UK and globally as a licensed Banking Platform as a Service.

Our platform is a full-stack 'bank or building-society-in-a-box', delivering all the functionality needed to run and grow a modern, digital-led financial institution, including native mobile app and web experience, servicing, core and all the back-end technologies, integrated in a single, cloud-native solution (“Bank-in-a-Box”). 

Monument Technology provides everything in one solution, taking care of all third-party contracts and integrations as well as ongoing maintenance and future platform enhancements - all for one annual licence fee, allowing our customers to embrace the most modern technology available, without any of the complexity.  

THE ROLE

We are looking for a Senior Android Engineer to play a key role in shaping and scaling our Android capability into a modular, reusable platform that supports multiple banking clients.

This is a senior, hands-on engineering role with architectural influence. You will help define how we build, structure and evolve our Android applications to ensure long-term maintainability, scalability and regulatory robustness. You will also contribute to raising engineering standards across a distributed, international team.

HOW YOU’LL MAKE AN IMPACT

• Evolve digital banking journeys into reusable, scalable Android components that support multiple client implementations.
• Expand and mature a robust Design System and component catalogue to enable consistent, configurable user experiences.
• Design and build modular Android applications using Jetpack Compose within a multi-module MVVM architecture.
• Provide architectural direction to ensure long-term maintainability, scalability and extensibility of the mobile platform.
• Deliver production-grade releases supported by CI pipelines, peer review and automated testing.
• Raise engineering standards through clear coding practices, quality control and constructive technical challenge.
• Mentor and guide engineers, strengthening capability across a distributed, international team.
• Work closely with designers and product stakeholders to translate complex requirements into accessible, high-performing UI.
• Operate effectively within a regulated financial services environment, proactively addressing risk, security and compliance considerations.

WE LOOK FOR PEOPLE WITH

• 6+ years’ experience in Android application development, including significant hands-on experience with Jetpack Compose.
• Proven delivery of at least two publicly released Android applications on the Google Play Store.
• Strong experience designing and evolving design systems and reusable UI component libraries.
• Deep knowledge of Kotlin and modern Android architecture patterns, including multi-module MVVM.
• Experience with Coroutines, Flow, LiveData, Jetpack libraries, Navigation and dependency injection frameworks such as Dagger or Hilt.
• Practical experience of automated testing frameworks such as Kotest, Mockk, Robolectric and Espresso.
• Experience working with CI/CD pipelines and quality tooling.
• Experience operating in a start-up or high-growth technology environment.

You demonstrate strong analytical capability, attention to detail and the confidence to challenge constructively. You are comfortable engaging with both technical and non-technical stakeholders and can communicate architectural decisions clearly and pragmatically.

OUR CULTURE AND VALUES

Our culture and values align with our mission to truly understand and offer exceptional service to our clients.

The Monument Technology team is passionate about building more than a bank and more than a technology platform. We are driven to create solutions that respect our clients’ time, complexity and ambition.

We are guided by integrity, attentiveness, a sense of community and innovation. We build trusted relationships through collaboration, attention to detail and a commitment to continuous improvement. Through inclusive thinking and purposeful innovation, we enable our clients and colleagues to achieve more.