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- Tasks: Design and implement innovative backend features to revolutionise healthcare.
- Company: Join HeliosX, a fast-growing tech company transforming global healthcare.
- Benefits: Enjoy generous equity, private health insurance, and 25 days holiday.
- Why this job: Make a real impact on healthcare while working with cutting-edge technology.
- Qualifications: Strong Java skills and a degree in computer science or related field.
- Other info: Be part of a diverse team committed to improving healthcare for everyone.
The predicted salary is between 30000 - 50000 £ per year.
Ready to revolutionize healthcare, making it faster and more accessible than ever before?
Founded in 2013 by Dwayne D’Souza, HeliosX was built on a simple but powerful idea: healthcare should be easier to access, faster to receive, and centred around the individual. From day one, we’ve grown without external funding; scaling profitably through technology, disciplined execution, and deep medical expertise.
We’ve earned the trust of millions of people worldwide through category-leading products and well-known brands, including MedExpress, Dermatica, ZipHealth, RocketRX, and Levity. A key driver of our success is vertical integration; we operate our own manufacturing and proprietary products, led by in‑house medical teams, researchers, and pharmacists at the top of their fields.
In 2025, HeliosX treated more than 1.7 million patients globally and reached £781m in revenue, representing +337% year‑on‑year growth and cementing our position as the clear market leader in the UK. That growth translates into real‑world outcomes: our weight‑loss treatments helped patients lose 8.5 million kilograms of excess weight in 2025 alone, contributing to an estimated 1,300 fewer cardiac events. This is growth with measurable, life‑changing impact at scale.
Today, we operate across four international markets, with successful launches in Germany and Canada and continued expansion in the US. We were also recently recognised in the Sunday Times Top 100 fastest‑growing tech companies, further validation of both our momentum and our ambition.
2026 is a step‑change year. Our ambition is to reach £1.6bn in revenue, expand from four to eight global markets and significantly broaden our condition and treatment portfolio. Over the coming years, you’ll help shape HeliosX into a truly world‑leading healthcare partner; one that combines scale, speed, and clinical rigour to redefine how personalised care is delivered. Joining HeliosX now means building systems, teams, and products that will define the next decade of digital healthcare, and doing work that genuinely improves lives, at global scale.
About The Role
We are looking for talented and experienced Back‑End Software Engineers to work on our range of successful sites and help sustain our trajectory of rapid growth. We operate in an Agile way and encourage innovative thinking in everything we do. Every member of our development team has a significant impact on our products. We are constantly looking for ways to improve our systems and architecture to ensure we have a system that is reliable, performant and flexible for future change.
What You’ll Be Doing:
- Design, implement and test new features, experiments, or flows.
- Partner with our product and design teams. Help them explore and prototype new product ideas, clarify requirements, and understand the technical options available for achieving our business objectives and delighting our users.
- Act as a subject matter expert regarding build tools, code, unit tests, and frameworks.
- Maintain and improve the codebase; recognise duplication, apply SOLID principles, and pragmatically address technical debt as the opportunity or need arises.
- Mentor other engineers in your areas of expertise.
- Help to continuously improve our processes, practices and architecture.
- Help build a great engineering culture with your engineering colleagues across the company.
Who You Are:
- Bachelor’s degree or higher in computer science or a related subject.
- Strong knowledge of Java and the JVM ecosystem with tools such as Spring MVC/Boot and JPA.
- A good understanding of how to design and architect backend systems.
- A pragmatic mindset with a bias to action – you know both what good looks like, and that working is better than perfect, and can walk a line between the two.
- Interpersonal and communication skills that enable you to explain complex topics to people and audiences from different backgrounds.
- Comfortable with the amount of change, delivery focus, and ambiguity associated with a company that is rapidly scaling and disrupting existing markets.
Why work with us?
At HeliosX, we want to improve healthcare for everyone, and to do this we need a team of brilliant people who share that ambition. We are currently a diverse team of engineers, scientists, clinical researchers, physicians, pharmacists, marketeers, and customer care specialists committed to our mission – but we need more talented folks to join us, if we want to achieve our global ambitions!
Aside from working with our all‑star team, here are the other benefits of coming on board:
- Generous equity allocations with significant upside potential
- 25 Days Holiday (+ all the usual Bank Holidays)
- Private health insurance, along with extra dental and eye care cover
- Employee Pension with Smart Pensions
- Enhanced parental leave
- Cycle‑to‑work Scheme
- Electric Car Scheme
- Free Dermatica and MedExpress products every month, as well as family discounts
- Home office allowance
- Access to a Headspace subscription, discounted gym memberships, and a learning and development budget (alongside a free Kindle and audible subscription)
Backend Software Engineer employer: Lifelancer
Contact Detail:
Lifelancer Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Backend Software Engineer
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, attend meetups, and connect with current employees at HeliosX. A friendly chat can sometimes lead to opportunities that aren’t even advertised.
✨Tip Number 2
Show off your skills! If you’ve got a portfolio or GitHub, make sure it’s up to date. Share projects that highlight your backend expertise, especially with Java and Spring. It’s a great way to demonstrate what you can bring to the table.
✨Tip Number 3
Prepare for the interview by brushing up on your problem-solving skills. Expect technical questions that test your knowledge of backend systems. Practise coding challenges and be ready to explain your thought process – we love seeing how you tackle problems!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining our mission to revolutionise healthcare.
We think you need these skills to ace Backend Software Engineer
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Backend Software Engineer role. Highlight your experience with Java, Spring MVC/Boot, and any relevant projects that showcase your skills. We want to see how you can contribute to our mission!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for healthcare technology and how your background aligns with our goals at HeliosX. Let us know why you're excited about this opportunity and how you can make an impact.
Showcase Your Problem-Solving Skills: In your application, don’t just list your skills; demonstrate them! Include examples of how you've tackled challenges in past projects or roles. We love seeing a pragmatic mindset in action, so let us know how you approach problem-solving.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining our team at HeliosX!
How to prepare for a job interview at Lifelancer
✨Know Your Tech Stack
Make sure you’re well-versed in Java and the JVM ecosystem, especially tools like Spring MVC/Boot and JPA. Brush up on your backend system design skills, as you'll likely be asked to discuss how you would architect solutions during the interview.
✨Show Your Pragmatic Side
HeliosX values a pragmatic mindset, so be prepared to discuss how you balance perfection with practicality. Share examples of when you've made decisions that prioritised action over perfection, and how that benefited your team or project.
✨Communicate Clearly
You’ll need to explain complex technical topics to non-technical stakeholders. Practice articulating your thoughts clearly and concisely, using relatable analogies if necessary. This will demonstrate your interpersonal skills and ability to collaborate effectively.
✨Embrace Change
Given HeliosX's rapid growth and evolving environment, show that you're comfortable with change and ambiguity. Share experiences where you've successfully navigated shifting priorities or adapted to new challenges, highlighting your flexibility and delivery focus.