Senior Mobile Software Engineer - FinTech Fully Remote

interAct Consulting Limited; London; Remote; GBP 60,000 - 80,000; Full time

Job summary

A leading fintech company is seeking a Senior Mobile Software Engineer to join their innovative team. This fully remote role, with one day a month in London, offers the chance to work on cutting-edge mobile applications, mentor junior engineers, and drive business success in a supportive environment. Competitive salary up to £80,000, along with a 12.5% bonus and comprehensive benefits, including 30 days holiday per year.

Benefits

30 days holiday per year

10% employer pension contribution

12.5% annual bonus

Supportive, collaborative work environment

Opportunity to work on innovative fintech products

Qualifications

• Proven experience building and maintaining mobile applications on both Android and iOS.
• Strong understanding of native mobile application architecture and design patterns.
• Ability to work independently and as part of a distributed team.

Responsibilities

• Develop and maintain high-quality mobile applications for both Android and iOS platforms.
• Own the full application development lifecycle, from architecture to deployment.
• Mentor junior engineers and contribute to a culture of continuous learning.

Skills

Kotlin

Swift

Test-driven Development (TDD)

Agile Methodologies

Problem-Solving

Attention to Detail

Tools

Git

JIRA

Job description

Senior Mobile Software Engineer - FinTech (Fully Remote, 1 Day/Month in London)Location: Fully Remote (UK-based), with 1 day per month in our London office (travel at own expense) Salary: Up to £80,000 per annum Bonus: 12.5% of salary per year Pension: 10% employer contribution Holiday: 30 days per annumAbout the RoleWe are a dynamic fintech company looking for an experienced Senior Mobile Software Engineer to join our growing team. You'll have the opportunity to shape the future of our mobile products, working on innovative solutions that empower our customers and drive business success.This is a fully remote position, with just one day per month required in our London office (travel to be arranged and paid by the individual). You'll collaborate with talented engineers, product managers, and designers to deliver world-class mobile experiences.Key Responsibilities

• Develop and maintain high-quality mobile applications for both Android and iOS platforms.
• Own the full application development lifecycle, from architecture to deployment and beyond.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Ensure code quality through rigorous code reviews, test-driven development (TDD), and robust CI/CD practices.
• Mentor junior engineers and contribute to a culture of continuous learning and improvement.
• Stay up-to-date with emerging technologies and industry best practices.

Essential Skills & Experience

• Proven experience building and maintaining mobile applications on both Android and iOS.
• Expertise in Kotlin (Android) and Swift (iOS) development.
• Strong understanding of native mobile application architecture and design patterns.
• Experience with test-driven development (TDD) and automated testing frameworks.
• Familiarity with agile methodologies and collaborative development tools (e.g., Git, JIRA).
• Ability to work independently and as part of a distributed team.
• Excellent problem-solving skills and attention to detail.

Desirable Skills

• Experience with cross-platform frameworks (e.g., React Native, Flutter) is a plus.
• Knowledge of modern mobile security best practices.
• Experience mentoring or leading engineering teams.

Benefits

• Competitive salary up to £80,000 per annum
• 12.5% annual bonus
• 10% employer pension contribution
• 30 days holiday per year
• Supportive, collaborative work environment
• Opportunity to work on innovative fintech products

How to ApplyIf you're passionate about mobile development and want to make a real impact in fintech, we'd love to hear from you! Please send your CV and a brief cover letter outlining your relevant experience.