Mobile App Developer - IOS and Android

About Nimble

Nimble is a boutique technology consultancy based in the UK North;
Sheffield, Leeds and Manchester. We partner with ambitious clients across the public and private sectors to design, build, and optimise digital services that deliver real value. We pride ourselves on our agile mindset, our creative problem‑solving, and our collaborative culture.

In this role, you will be instrumental in building secure, accessible, and user‑centric mobile applications that deliver critical services to millions of citizens. You will work within an agile, cross‑functional team, taking ownership of the end‑to‑end mobile development lifecycle across both major platforms.

• Design, build, and maintain high‑performance, reusable, and reliable native applications for both iOS and Android.
• Collaborate with product managers, designers, and backend engineers to deliver seamless user experiences.
• Ensure code quality, security, and strict adherence to government digital accessibility standards (WCAG/GDS).
• Implement automated testing and continuous integration/continuous deployment (CI/CD) pipelines.

• Dual‑Platform Expertise:
  Proven commercial experience developing native applications for both iOS (Swift/Objective‑C) and Android (Kotlin/Java).
• Tech Stack:
  Strong understanding of mobile UI design principles, RESTful APIs, and mobile architecture patterns (MVVM, Clean Architecture).
• Engineering Best Practices:
  Solid experience with Git, agile methodologies, and test‑driven development (TDD).
• Public Sector Fit: A strong commitment to building inclusive, accessible technology. (Prior experience working with UK government or public sector clients is a strong plus).
• Clearances:
  Must be eligible for standard UK security clearances (e.g., BPSS or SC).

• Impactful Work:
  The opportunity to shape digital services that impact thousands of users across the UK.
• Collaborative Culture: A supportive, tight‑knit environment where knowledge sharing and continuous learning are highly valued.
• Professional Growth:
  Dedicated training budgets and pathways to develop your technical skills and consultancy expertise.
• Flexible Working: A hybrid working model tailored to balance client needs with your personal well‑being.

• Private healthcare for you and a family member through Westfield Health
• Multiple Qualified Mental Health First Aider’s with regular 1‑1’s available
• £2k champion fund to spend as you wish on your own L&D
• Referral scheme (£3,000) for every successful applicant
• Dedicated time to spend on your L&D, including time to complete courses and qualifications
• Flat organisational structure with lots of career progression opportunities
• Laptop and any practicable equipment provided (either a Mac or Windows)
• Regular Nimble Socials (both virtual & physical) including Escape rooms, Lunches, Award nights, Bowling, Bouldering and more!
• Relaxed and fun working environment
• Engaging and collaborative communities to be involved in
• A chance to be involved in company OKRs and shape how we will be in the future
• 25 days holiday allowance + bank holidays
• Company pension (with employer contributions)

At Nimble Approach, we strongly believe that discrimination and victimisation is unacceptable. It is our duty to ensure that no employee or job applicant receives less favourable facilities or treatment (either directly or indirectly) in recruitment or employment on grounds of age, disability, gender / gender reassignment, marriage / civil partnership, pregnancy / maternity, race, religion or belief, sex, or sexual orientation (the protected characteristics).

Our aim is that our workforce will be truly representative of society and each employee feels respected and able to give their best. We want everyone at Nimble and those applying to join us to feel safe, supported and encouraged so if we can make any adjustments to help with your application or you require any assistance, please reach out to us on  and we are happy to help.