Mobile Platform Tech Lead

At Kroo Bank, we’re building a better bank from the ground up. One that puts customers first, treats money responsibly, and uses technology to make everyday banking simpler, fairer and more transparent. We’re a fully regulated UK bank, backed by long‑term investors, with a growing customer base and big ambitions. We move fast, think carefully, and hold ourselves to high standards, whether that’s how we build products, manage risk, or look after our people.

How you will contribute and key responsibilities:

• Own and strengthen the technical foundations of our mobile banking app, ensuring it remains secure, performant, reliable, and scalable as our customer and product needs evolve.
• Lead a small mobile platform team and work closely with engineering, product, design, and compliance stakeholders to maintain high technical standards across our React Native estate and associated native integrations.
• Lead and mentor the mobile platform team, providing technical guidance, coaching, and clear prioritisation across platform initiatives.
• Define, implement, and uphold engineering standards across mobile security, observability, performance, resilience, and release quality.
• Act as a hands-on technical leader in the development and maintenance of shared mobile platform capabilities within React Native and TypeScript.
• Contribute to architectural decisions relating to React Native, native modules, and integrations across Kotlin, Swift, Objective C, and Java.
• Partner with product feature teams to ensure releases are delivered smoothly, meet quality expectations, and align with regulatory and compliance requirements.
• Drive improvements in automated testing practices, including unit, integration, and end-to-end testing approaches that improve confidence in release quality.
• Enhance mobile engineering workflows through improvements to continuous integration, continuous delivery, build reliability, and deployment processes.
• Own and coordinate production incident management and release activities, ensuring timely resolution, effective communication, and strong operational control.
• Collaborate with design and product teams to evolve and maintain shared UI components, platform standards, and mobile design system capabilities.
• Oversee the implementation and continual improvement of mobile observability tooling, analytics, logging, and exception monitoring to support stability and insight-driven decision making.
• Promote secure application development practices and support compliance aligned delivery within a regulated banking environment.
• Identify and drive opportunities to improve platform stability, developer productivity, and the long-term maintainability of the mobile application estate.

Qualifications:

• Degree in Computer Science, Software Engineering, Information Technology, or a related field, or equivalent practical experience.
• Ongoing professional development in mobile engineering, software architecture, or secure development.
• Good understanding of engineering standards in regulated or high compliance environments.
• Ability to operate at Tech Lead level with responsibility for technical direction and team support.

Experience and skills requirements:

• Strong experience building production mobile apps using React Native and TypeScript.
• Good knowledge of native mobile development using Kotlin, Swift, Objective C, or Java.
• Experience leading or mentoring engineers in a mobile or platform team.
• Experience owning app security, performance, reliability, observability, and release quality.
• Experience managing releases across multiple teams with responsibility for stability and uptime.
• Good understanding of automated testing for mobile applications.
• Experience working in regulated sectors such as banking, fintech, or health.
• Good knowledge of secure application development and compliance requirements.
• Experience contributing to mobile architecture and shared platform components.
• Strong communication skills and ability to work closely with product, design, engineering, and compliance teams.
• Experience improving CI/CD pipelines, release processes, and developer workflows.
• Pragmatic approach to balancing security, compliance, and delivery needs.

What we offer:

• Generous holiday time: 25 days annual leave, 8 bank holidays, 1 Kroo bank holiday (June 24th), and 1 day off during the week of your birthday.
• Personal days: 3 personal days to use as needed.
• Employer-sponsored volunteer program: Up to 4 hours per month of employer-sponsored volunteer time.
• Mental health support: Access to Spill, our mental health support partner.
• Workplace pension: 5% employee contribution and a 3% employer top-up.
• Top-notch equipment: A MacBook laptop and support in establishing your home office.
• Modern office: Access to our modern workspace in Farringdon, Central London, which includes a full gym.
• Cycle to Work scheme: Encouragement of sustainable transportation.
• Electric Car scheme: Support for reducing carbon footprint.
• Enhanced parental leave policy.
• Room for growth: Opportunities for career advancement.
• Full healthcare for you and your nuclear family via Vitality.

Hybrid Working: A mix of remote and office work, with flexibility in using office space.

Diversity and Inclusion: Commitment to fostering a diverse and inclusive workplace.