Full Stack Developer Job Belfast Northern Ireland UK,Software Development

Be part of something great Maximus is a global organisation that specialises in providing health and employment services to millions of people every year. Here in the UK we employ around 5,000 people across the country to deliver services that have a profound impact on people’s lives. From assessments and health services to employability programmes and specialist support, we do work that matters with people who care.

Home based role. Salary range - £56,500 - £74,375 Benefits include:

25 days annual leave
9% combined pension
Holiday trade scheme
Flexible benefits package

The Full Stack Developer designs, builds, tests and supports modern digital products and business applications across the full software development lifecycle. Working across user interfaces, services, APIs, integrations, data and cloud infrastructure, the role delivers secure, scalable and maintainable solutions within a UK-hosted environment. The role works as part of an Agile engineering team, applying secure-by-design principles and modern development practices to create measurable value for users and the business.

Accountabilities

1. Design, develop and maintain full-stack applications, delivering high-quality front-end and back-end components that meet agreed user, business and non-functional requirements.

2. Build and enhance secure APIs, services, integrations and event-driven components that enable reliable communication and data exchange across internal and external systems.

4. Design maintainable application architectures and data models across relational and No

SQL solutions, ensuring performance, scalability, resilience and supportability.

5. Embed secure-by-design engineering throughout the software development lifecycle, including secure coding, threat-aware design, automated testing, peer review and remediation of vulnerabilities in line with organisational and NCSC requirements.

6. Contribute actively to Agile delivery through estimation, backlog refinement, sprint planning, demonstrations, retrospectives, code reviews and continuous improvement.

7. Support live applications through monitoring, troubleshooting, root cause analysis, performance optimisation, documentation and effective handover to operational teams.

Key Internal Stakeholders & Relationships

Technology Systems Manager and engineering colleagues
Product Owners, Scrum Masters and delivery teams
Solution, Security and Enterprise Architects
Integration, Automation, Data and Test Engineers
Cloud Operations, Service Management and business stakeholders

Key External Stakeholders & Relationships

Technology suppliers and delivery partners
Software and platform vendors
Third-party integration providers
Security and assurance partners, where required

Qualifications & Experience Essential & DesirableESSENTIAL

Proven commercial experience with a minimum of 5yrsin industry as a Full Stack Developer, working across front-end and back-end development within Agile delivery teams.
Evidence of multiple project experience across the full lifecycle of web and app development, from initial planning through to post-launch support.
Strong Python development skills, including the creation of robust backend services and serverless functions.
Experience designing and developing RESTful APIs, services, integrations and event-driven architectures.
Practical experience with relational and No

SQL databases, including data modelling, querying, performance and operational considerations.
Experience developing cloud-native applications and working across application, data and cloud infrastructure layers in a UK-hosted environment.
Strong understanding of source control, automated testing, CI/CD, observability and modern software engineering practices.
Deep understanding of secure-by-design software…