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Zaizi

Backend Developer (SFIA4)

Hybrid

London, United kingdom

Mid level

Full Time

09-02-2026

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Skills

JavaScript HTML CSS SQL MySQL PostgreSQL Cloud Security DevOps Docker Kubernetes Test Test Automation Problem-solving Research Training Coaching Redhat Databases git angular Autonomy react AWS api testing Agile Recruitment Junit Bootstrap Spring Vue.js GCP Spring Boot Maven Gradle OpenShift

Job Specifications

Zaizi is looking for a Senior Software Developer with solid technology skills, but who is also passionate about improving outcomes and the user experience. You’ll be reliable in your own deliverables but also curious about and offer innovative ideas to others in a mutli-disciplinary team.

Our work culture is inclusive, modern, friendly, and democratic. We look for bright, positive-thinking individuals with a can-do attitude. Our people enjoy challenging themselves to be the best at what they do – if that sounds like you, you'll fit right in!

Requirements

Essential skills:

Ways of working

Developing digital solutions delivered to the GDS standard
Demonstrable experience working on Agile environments
Demonstrable experience working on product development environments based on observation, experimentation and user research
Demonstrable experience working in multi-disciplinary/DevOps teams which include product owner/manager, UX designers, UX researchers, Developers, Platform engineers, etc
Demonstrable experience working on continuous improvement environments doing multiple releases every week

Coding And Testing

Demonstrable experience designing, coding and debugging Golang based systems
Good skills in web front end technologies such as HTML, CSS, Bootstrap
Golang
Spring Boot
Docker
Kubernetes
Atlassian
Build tools: Maven, Gradle, Ant
Familiar with source control systems, such as GIT, including branching, merging, etc.
Testing: TDD, unit testing, JUnit, Mockito, Cypress
Good knowledge of relational databases such as MySQL and PostgreSQL including data modelling, SQL scripts, store procedures
Shift to the left: Functional test automation (API testing, UI testing [cucumber, nightwatch])

Nice To Have Skills

AWS
Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable)
Experience on a front-end javascript framework such as react, angular or vue.js
RedHat OpenShift for container orchestration
Knowledge of NCSC’s 14 cloud security principles.

SC Clearance

Zaizi works with UK Central Government departments on a range of projects. To be able to work on our customer projects, employees must be Security Cleared to a standard acceptable to our Government customers. Due to this restriction we can currently only recruit candidates who have the right to work in the UK without sponsorship and who have lived in the UK for the last 5+ years continuously.

You don’t meet all the requirements?

Studies show that women and black, Asian and minority ethnic people are less likely to apply for a job unless they meet every qualification. So if you’re excited about this role but your experience doesn’t align perfectly with the job description, we’d love you to still apply. You might just be the perfect person for this role, or another role here at Zaizi.

We actively welcome applications from people of colour, the LGBTQ+ community, individuals with disabilities, neurodivergent individuals, parents, carers, and those from lower socio-economic backgrounds.

If you need any accommodations to support your specific situation, please feel free to let us know. For candidates who are neurodiverse or have disabilities, we are happy to make any adjustments needed throughout the interview process—just ask!

Interview Process

1st stage:

Initial phone screening done by a member of the recruitment team

2nd Stage

Technical interview, this stage evaluates your technical expertise and problem-solving abilities, especially if you're applying for a technical role.

Final Stage

10-15 min presentation and a panel interview where multiple people from different departments ask you questions.

Salary: £60,000 - £75,000

Benefits

Compensation

Competitive Pay: Salaries reviewed annually to ensure they reflect your performance and market value.
Loyalty Pension: We invest in your future. Starting at a 5% employer contribution, we increase this by 0.5% every year after your third anniversary, up to a maximum of 8%.
Protection: Comprehensive Group Life Assurance for peace of mind.

Purpose & Culture

Real Impact: Work on mission-critical projects that secure and improve the UK's digital infrastructure.
Autonomy: A culture that empowers you to make decisions, prototype rapidly, and iterate towards success.
Service & Community: We support those who serve. 10 paid days for Reservist Military Service.

Work / Life Balance

Time Off: 25 days annual leave + Bank Holidays, with the flexibility to Buy/Sell additional days to suit your lifestyle.
Giving back: 2 paid volunteering days per year.

Development & Growth

Master Your Craft: Fully funded professional certifications (AWS, GCP, Agile, etc.) supported by 5 days paid study leave.
Expand Your Horizons: An additional £500 annual "Personal Choice" fund to learn whatever inspires you—work-related or not.
Support: Access to 1-2-1 professional coaching and team training to accelerate your career.

Health & Balance

Premium Health: Vitality Private Medical Insurance (includes Apple Wat

About the Company

Zaizi helps public sector organisations realise their potential. We design, build and sustain secure digital services, keeping user needs at the heart of everything we do. Digital government is hard, together we'll succeed. Know more