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.

About Our Process:

We can be flexible with the structure of our interview process if someone’s circumstances or timescales require it but our general structure is:

• 30-minute meet and greet with our talent acquisition specialist via Google Hangouts.
• 1-hour technical interview with the hiring manager via Google Hangouts.
• 30-minute culture champion interview via Google Hangouts.

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: We know that life can be unpredictable, so we offer 3 personal days to use as needed.
• Employer-sponsored volunteer program: We’re passionate about giving back to our community, and we support our employees in doing the same with up to 4 hours per month of employer-sponsored volunteer time.
• Mental health support: We care about the mental health of our team members and offer access to Spill, our mental health support partner.
• Workplace pension: We want you to feel secure about your future, so we offer a workplace pension with a 5% employee contribution and a 3% employer top-up.
• Top-notch equipment: We provide top-of-the-line equipment necessary for smooth hybrid work, including a MacBook laptop. Additionally, we also offer support in establishing your home office by contributing towards your setup if required.
• Modern office: When you’re in the office, you’ll enjoy access to our modern, bustling workspace in Farringdon, Central London, which includes a full gym.
• Cycle to Work scheme: We encourage sustainable transportation with our Cycle to Work scheme.
• Electric Car scheme: We’re committed to reducing our carbon footprint, and our Electric Car scheme makes it easy for our employees to do the same.
• Enhanced parental leave: We know that family comes first, and we offer an enhanced parental leave policy to support our employees in starting and growing their families.
• Room for growth: As a fast-paced, high-growth start-up, we’re dedicated to providing our employees with room to grow and excel. You get full healthcare for you and your nuclear family via Vitality.

Hybrid Working: At Kroo Bank, we have a hybrid policy that gives both individuals and teams a lot of freedom when it comes to using the office space to boost productivity. Our London office is a great resource when used effectively. So, employees who can occasionally come to the office are a good fit for how we work right now. Keep in mind that this job involves working from Monday to Friday, with a mix of remote and office work, so you won’t need to be on-site all the time.

Diversity and Inclusion: We wholeheartedly uphold our commitment to fostering a diverse and inclusive workplace. Every employee is highly regarded, respected, and supported without any form of judgement or prejudice. We consider Diversity, Equality, and Inclusion as fundamental pillars guiding our path in all aspects of our bank. We also ensure that reasonable adjustments are made available to all candidates throughout the recruitment process.