Software Engineer (March 2025)

Obesity has become a global epidemic; in the UK, we spend £9 billion a year alone on diseases like type 2 diabetes (that’s 10% of the NHS budget). What’s shocking is most of this is preventable – through sustained lifestyle and habit change. Enter Second Nature. We’re here to help people take control of their health. By bringing together the latest behavioural science, psychology, technology, and the talents of our incredible team, our mission is to eradicate the global epidemic of chronic lifestyle diseases once and for all.

Our habit-change programme – delivered digitally through mobile and web apps – helps people to transform their lifestyle, lose weight, and ultimately reduce their risk for serious conditions such as type 2 diabetes and heart disease.

About us:

• We’ve positively changed the lives of over 250,000 people
• We’re rated 'Excellent' by over 7k of our members on Trustpilot
• We’re growing extremely quickly & are now a profitable business
• We’re one of the few consumer health brands that are commissioned by the NHS and leading health insurer, Vitality Health
• We’re a leading B2C provider of GLP-1 medication-assisted weight loss programmes, and 1 of 5 NICE-approved providers to deliver these services within the NHS in the future
• Our team members stay with us for an average of 4.3 years

The role:

We’re looking for an exceptional Software Engineer to work in one of our cross-functional pods focused on building and enhancing features of our core company product that engage and excite users. The pod will be responsible for one of the core company goals (OKRs), deciding what needs to be done to meet that goal. You will report into an Engineering Manager within the pod and you’ll work with that manager, the Product Manager, and whoever else is needed to achieve the pod's goals. This is a hands-on role and your heavy focus will be on 'writing code' and learning from those around you to improve your tech skills.

Alongside these goals you and your pod will be responsible for enhancements and monitoring of existing features as we strive for continuous improvement and accountability for our work. You will predominantly work on our core tech stack, including our React Native app, our NextJS website and our NodeJS backend, but there will be opportunity to learn about other parts of our ecosystem such as how we use Terraform and how we set up our AWS infrastructure. You'll be part of a team of incredibly talented engineers learning and solving problems together and will rapidly take on responsibility and ownership of the things you build.

Technical experience:

• You have 1-4 years of software engineering experience
• You have worked across both the backend and frontend
• You have worked predominantly within the JavaScript ecosystem and have experience of some of the below:

• NodeJS
• React
• TypeScript
• React Native
• Jest

• NoSQL databases / MongoDB
• NextJS
• End to end testing

Who you are:

• Passionate: You care about everything you do and always want to get better
• Proactive: Take ownership of your work and development
• Communicator: Excellent communicator and work well with a variety of people
• Pragmatic: You push for software quality but can make the right trade offs when required
• Adaptable: Thrive in a fast-changing startup environment
• Lifelong Learner: Continuously seeking knowledge

And, for your interest, this is our all-JavaScript tech stack:

• TypeScript for static typing
• React Native for iOS and Android apps
• NodeJS + Express API servers
• MongoDB our main database
• NextJS for our web frontend
• Terraform for our IAC
• We are an AWS-first company

A competitive market salary, generous share options, and bi-annual performance reviews to recognise your contributions. Hybrid working policy: 2 days/week in our West London office, the rest of the week remote working. Quarterly company meet ups and socials. A budget of £200/year to spend on professional development. Option to join the Salary Sacrifice scheme, and Cycle to Work scheme. You’ll get to work with intelligent, friendly, smart colleagues all incredibly passionate about solving the type 2 diabetes epidemic. You can see the impact your work is having on improving thousands of people’s lives and tackling the obesity epidemic on a daily basis. You’ll have autonomy and responsibility for your work direction.