Senior Software Engineer
Date Posted: 18/08/2025
Location: London
Job Type: Full time
Apply NowWho are Just?
We help people achieve a better later life. That’s our purpose and it’s the reason we exist. We are a fast-growing FTSE 250 company helping customers enjoy the retirement they deserve. We do this through a variety of market leading, award-winning products and services, delivered by a diverse team of over 1,400 purpose-led colleagues who genuinely put the customer at the heart of everything we do.
This is a brilliant time to join our business. We are on an exciting growth journey to become the UK’s most loved retirement expert.
The Role
We’re looking for a Senior Software Engineer to join one of our multidisciplinary, cross-functional, lean delivery squads, focused on rapidly delivering value to our customers through our mobile app and website.
Our ideal candidate will have extensive experience across different technologies and projects, combined with a desire to keep growing their skills – learning new languages, technologies and practices, solving tough problems and mastering areas you already know.
You’ll be comfortable designing and articulating solutions, working closely with product managers and other colleagues to ensure we’re delivering the right thing in the right way. You will lead by example; getting your hands dirty in the code, inspiring your peers & helping to educate your stakeholders.
You are passionate about the craft of software development and contribute to technical and non-technical discussions that help shape the direction of digital product delivery. You are able to work independently, as well as collaboratively, on user stories within an agile delivery environment and are versed in modern software delivery practices. You care about creating quality software that delivers value to consumers, in a thoughtfully pragmatic way.
As well as contributing to production-grade code bases, you will also be keen to help shape the vision for the product, happy to mentor and upskill colleagues
Key Responsibilities
Providing engineering expertise and experience as a member of a cross functional delivery team, working alongside other engineers, designers, QA, delivery lead and a tech lead
Employ modern development practices to ship high-quality software
Ability to adapt to new languages and frameworks
Choosing the right technology for the job, striving for simplicity
Providing support for digital products once they are live
Pair programming with other members of the team, including designers and QAs
Own the delivery of user stories end-to-end, working within agile principles
Be an advocate for lean software development, building for what is required now
Help break large deliverables into small, lean incremental user stories
Actively contribute to agile ceremonies
Working collaboratively with other engineers within Just to advance our practice across product squads.
Your Experience
Web/mobile development languages (Typescript, Tailwind and a good understanding of underlying HTML, CSS).
Development frameworks for Web/app (Next.js (React), Expo (React Native))
Backend development languages (C#)
Databases (Mongo)
Virtualisation and orchestration tools (Kubernetes, Docker)
Infrastructure as code (Terraform)
CI/CD pipelines (Github Actions, Azure pipelines)
Effective source control management (Git)
Test automation following Test Driven Development Practices including Unit, Integration and end-to-end testing
UI data layer technologies (GraphQL)
Supporting a highly-available production system, diagnosing issues raised from logs and observability tooling (Dynatrace), triage and resolution.
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
Why Just?
At Just you’ll have the opportunity to develop your career, whilst making a difference to the lives of those around you. You’ll be part of a company with a strong and distinctive culture - we’re ambitious, curious and collaborative – and every decision we make centres around being Just and delivering the best outcomes for our customers.
We’re committed to building a more sustainable business, and we’re working hard to make progress against our Net Zero targets. We're reducing our reliance on fossil fuels in our offices, switching to more sustainable sources of energy and we're investing more of our money in green and social assets.
Valuing diversity of thought and fostering a sense of belonging is critical to our business success, driving innovation and balanced decision making. Our work on DEIB (Diversity, Equity, Inclusion and Belonging) aims to deliver a brilliant employee experience underpinned by a sense of belonging, where our people feel proud to work at Just. We remain committed to our publicly disclosed HM Treasury Women in Finance Charter and Race at Work Charter targets and support a wide range of employee network and events, championing issues including intergenerational working, social mobility and neurodiversity.
Be Bold. Be Brilliant. Be Just.
Apply Now