Full Stack Engineer

Just Group plc
London
At Just we encourage a flexible and agile working environment for the majority of our opportunities. Get in touch with us to discuss in more detail.

Full Stack Engineer

Location: London - hybrid

Full time - 35 hours

Who are Just?

We're a FTSE 250 Financial Services company who specialise in retirement solutions and right now, our world is moving pretty quickly. With the defined benefit buy in / buy out space growing each year, Just continues to annually grow its business by over £4bn of assets.

We are a purpose driven company with compelling and credible goals. Quite simply, we help people achieve a better later life. We achieve this by providing competitive and innovative products, services, financial advice and guidance to help our customers achieve security, certainty and provide them with peace of mind in retirement.

That's who we are. We're a company on a mission: to become a beacon for the entire retirement industry. Because we believe everyone deserves a fair, secure, and fulfilling retirement.

Purpose:

About the Role We are looking for a Full Stack Engineer to join our growing team, working on cutting-edge mobile and web applications. The role involves developing and maintaining high-performance applications using React Native, Node.js, Express, .NET & C# while leveraging modern deployment and infrastructure tools such as Kubernetes, Helm, Azure, and Terraform.

You will play a key role in building and optimizing scalable solutions, working closely with engineers, designers, and product teams to deliver exceptional user experiences.

Job Role Accountabilities:
  • Develop, maintain, and enhance mobile and web applications using React Native, Node.js, and Express.
  • Build and optimize RESTful APIs, GraphQL ensuring high performance and security.
  • Deploy applications using Kubernetes, Helm, and Azure, following best DevOps practices.
  • Implement Infrastructure as Code (IaC) using Terraform to automate cloud deployments.
  • Collaborate with designers, product managers, and backend engineers to define application features and functionalities.
  • Write clean, maintainable, and well-documented code following industry best practices.
  • Troubleshoot, debug, and resolve application issues efficiently.
  • Ensure applications are optimized for performance, scalability, and reliability.
  • Participate in code reviews, mentoring junior developers, and driving best engineering practices.
Skills and Experience
  • Strong experience with React Native for mobile application development.
  • Proficiency in Node.js, Express.js, C# &.NET for backend development.
  • Experience with Kubernetes and Helm for container orchestration and deployments.
  • Hands-on experience with Azure cloud services and cloud-native development.
  • Familiarity with Terraform for Infrastructure as Code (IaC).
  • Strong understanding of API design, authentication (OAuth, JWT), and security best practices.
  • Experience with CI/CD pipelines and DevOps tools.
  • Solid knowledge of performance optimization and debugging techniques.
  • Ability to work in a fast-paced agile environment and collaborate with cross-functional teams.
Company Benefits
  • A Competitive Salary, Pension Scheme and Life Assurance
  • Along with 25 Days Annual Leave plus an Additional Day on us for your Birthday
  • Private Medical Cover and Income Protection, just in case
  • A generous and highly achievable bonus scheme - paid annually based on individual and company performance against targets
  • Opportunity to progress within your career both in-role and within the company
  • FREE access to the Headspace App, a 24/7 Employee Assistance Helpline and Trained Physical & Mental Health First Aiders (On-Site)
  • A variety of Employee Funded Benefits available to you via our Online Benefits Portal
  • Plus, several additional purchase options available for you and your loved ones
About Us

We're a FTSE 250 Financial Services company who specialise in retirement solutions and right now, our world is moving pretty quickly.

How people work, save, and plan for the future is all changing. A new generation of retirees needs a new kind of retirement company. A company who will look for new ways of doing things - and will always put the customer first.

That's who we are. We're a company on a mission: to become a beacon for the entire retirement industry. Because we believe everyone deserves a fair, secure, and fulfilling retirement. And with you on our team, we're going to make sure they get it.

We've built our sustainability strategy around the United Nations Sustainable Development Goals (SDG) and have selected goals where we believe we can make the most difference. By aligning our activity with these global goals, we can make sure we play our part in addressing the wider issues facing the planet and leave a positive legacy to the world. You can read more about our sustainability strategy here.

Diversity, equity and inclusion are priorities for us. Having a diverse, talented workforce with colleagues of different backgrounds, world views and experiences is the right thing to do. It's also the most effective way to succeed, innovate and better serve our customers now and in the future. We are committed to our targets on gender and ethnicity and run a number of successful mentoring and sponsorship programmes for our colleagues from diverse backgrounds. We have multiple active employee network groups which champion issues including gender, ethnicity, sexual orientation, disability and neurodiversity. You can read more about our DE&I strategy and commitments here.

What's clear about working at Just is that we care. We care about our customers, our purpose, our environment, inclusivity, wellbeing and most importantly - each other. We look forward to welcoming you to the team soon.
Posted 2025-06-07

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