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Senior React Native Developer (Mobile)

  • Development
  • Full-time
  • London, GB
  • Remote friendly
  • 45K - 70K GBP a year

2022-05-25 12:19:50 UTC

Senior React Native Developer (Mobile)

ON is a fast-moving, design-minded technology partner — building compelling and high-impact digital experiences and software platforms. We work with forward-thinking companies that value design and user experience.

We’re not your typical agency, and place a heavy emphasis on bespoke, best-fit solutions that are tailored to the full stack challenges that we are solving — with technical rigour behind our delivery, and a focus on the right tools for the right job.

As a rapidly growing business, we’re looking for talented developers to join our multidisciplinary team of technologists, designers, strategists and researchers. The role is varied, and gives the opportunity to see through project delivery from start to finish, and not be pigeon-holed into a single area.

Our work spans a wide range of sectors, including MedTech, FinTech, Creative, Venture, FoodTech; with an increasing focus on sustainability through our work with charities, ClimateTech, and AgTech companies.

If that sounds like your cup of tea, we’d love to chat.

About the role

We sit at the intersection of design and technology and value developers with a keen eye for detail, and a good mix of technical, commercial and UX knowledge. You will take ownership of the entire lifecycle of development and work closely with our delivery teams and senior technical leads.

This is a permanent, full-time position. We’re headquartered in London, we embrace flexible working, and are happy to accept candidates from anywhere in the UK. You’ll be working alongside a multidisciplinary team of technologists, designers, strategists and researchers to deliver digital projects for clients, and for ON internally.

There's a great deal of variety in the role - projects can vary greatly in scope and challenge, and regular rotation can be expected. You’ll have the opportunity to manage and mentor other developers, and have a hand in evolving our processes and culture, and building the team.


  • Developing native apps utilising React Native for client bespoke projects

  • Developing architecture, writing code, conducting test-driven development and debugging

  • Prepare, plan, co-ordinate, lead and be responsible for the development and testing of mobile apps

  • Ensure best practices are followed by staying abreast of industry issues and trends

  • Use agile methodologies to drive, optimise, and improve mobile development processes



About you

You should be detail-oriented, passionate about coding, and have a broad understanding of development best practices. The kind of person who loves to problem solve and build products that they can be proud of.

  • Experience developing React Native applications

  • A good grasp of iOS and Android platforms, having developed them in the past 

  • Extensive experience in Javascript and Typescript

  • 5+ years of experience with React Native

  • Working knowledge of RESTful APIs and event-driven architecture

  • Understanding of version control systems (GIT)

  • Excellent communication and collaborative skills

  • Experience mentoring other developers

The ideal candidate will also have:

  • General experience of mobile application development outside of React Native e.g. with Flutter, Swift, Java, or Kotlin

  • Experience of selecting, utilising and maybe creating SDKs

  • Experience working with Node.js

  • Experience working closely with designs and UX




As part of a fast-growing team, we expect a lot from our people, but also make sure that you have the support you need to deliver and to grow - both personally and professionally. As well as working with a dynamic, diverse and multidisciplinary team, you get:

  • A competitive salary

  • Access to the company bonus scheme

  • 24 days paid holiday per year, plus national holidays

  • Remote working as standard

  • Health insurance

  • We’ll provide the latest Apple laptop and an external monitor along with any equipment you need to be comfortable working from home

  • Work from home allowance, we’ll contribute to your internet

  • Funding and resources to continue professional development

  • Additional benefits with each year of service

We have quarterly reviews, and realise the importance of giving people the time and resources they need to develop their skills, as well as taking into account preferences in terms of the types of projects that they are assigned to.

We are committed in our journey to eliminating discrimination, encouraging and valuing diversity amongst our workforce. We welcome enquiries from everyone.