Software Engineer - Data Platform (Python, React, Azure)

Location: London

Contract: Permanent

Hours: Fulltime – 35 hours

Purpose: Support the DB Transformation engineering team in designing, developing, and delivering enterprise-grade software built on a Python (FastAPI), React (Next.js), and Azure Kubernetes Service (AKS) stack. This role plays a key part in building our service-oriented data platform, ensuring scalability, reliability, and security within a regulated environment. You will work across the stack—from front-end applications to containerised services—and help embed DevOps excellence and modern engineering practices across the team.

About 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 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.

Key responsibilities:

• Deliver high quality, secure and maintainable code using Python, React and TypeScript, aligned to business and architectural standards.
• Contribute to the development of a cloud native data platform running on Azure Kubernetes Service, ensuring scalability and reliability.
• Design and build RESTful APIs and data integration services using FastAPI, with occasional use of Go where required.
• Develop responsive and high performing front end applications using React, Next.js and modern component libraries.
• Containerise and deploy applications using Docker and Helm within Kubernetes environments.
• Build and maintain CI CD pipelines in Azure DevOps, embedding automation, testing and release quality.
• Apply Infrastructure as Code using Terraform and ensure solutions meet security and compliance standards including OWASP and data protection.
• Collaborate across engineering and product teams, contribute to Agile practices, support production systems and mentor junior developers.

Examples of Key Activities:

• Develop and maintain backend services using FastAPI to support core business functions.
• Build and enhance React and TypeScript front ends using Next.js, focusing on performance, usability and component reusability.
• Design, build and maintain scalable solutions across the Microsoft Power Platform including Power Apps, Dataverse, Power Pages, Power Automate and custom connectors, integrating with Azure services and APIs.
• Containerise and deploy applications using Docker and Helm within Azure Kubernetes Service environments.
• Extend and manage CI CD pipelines in Azure DevOps, embedding automated testing, linting and security scanning.
• Implement monitoring and observability using Azure Monitor, Grafana and structured logging to ensure system reliability.
• Define and provision infrastructure using Terraform, while applying secure coding practices and supporting risk and threat assessments.
• Collaborate with architecture and engineering teams, contribute to code reviews and testing, and support incident management and continuous improvement.

What we’re looking for:

• Qualifications: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. Desirable - Relevant certifications in Microsoft technologies and Azure are highly desirable.
• Experience: Strong experience with React, TypeScript and Next.js alongside Python and SQL Server to build scalable applications. Proven ability to design and develop RESTful APIs for internal and external integrations. Hands on experience with Azure services including App Services, Azure SQL, Key Vault and Azure DevOps. Experience with Docker and Azure Kubernetes Service for containerisation and microservices deployment. Solid understanding of DevOps practices including CI CD pipeline design and deployment automation. Familiarity with Infrastructure as Code tools such as Terraform and ARM templates for environment management. Experience supporting production systems, including incident triage, root cause analysis and resolution of complex issues. Strong understanding of secure coding practices, OWASP principles, Agile delivery, Git, testing and code review best practices.

Our behaviours: 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.

What’s in it for you:

• A competitive salary, pension scheme and life assurance.
• 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.
• Opportunities to progress your career in-role and within the company.
• Free access to the Headspace app, 24/7 employee assistance helpline and trained physical and mental health first aiders.
• A variety of employee funded benefits available via our online benefits portal.
• Plus, several additional purchase options available for you and your loved ones.

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.

Please submit your CV using the 'apply now’ button. Shortlisted candidates will be contacted regarding next steps which may include an initial phone interview and in-person assessment.