Software Developer – Backend

🕒 October 28, 2025

🏢🏡 London – Hybrid

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

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Zaizi

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2006

🏛️ Government

🔐 Security

☁️ SaaS

Government • Security • SaaS

Zaizi is a company that partners with public sector organizations to design, build, and maintain user-centered and secure digital services. They specialize in solving complex digital challenges through strategy, service design, product management, user research, agile leadership, automation, and cloud services. Zaizi's focus is on helping their clients achieve impactful outcomes by aligning digital solutions to their specific needs, enabling self-sufficiency, and fostering collaboration. With strong technical expertise and a commitment to evidence-based decision-making, Zaizi supports sectors such as border security, national security, and the public sector in achieving their digital transformation goals.

📋 Description

• 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 • - Team leadership and mentoring experience • - Integrity / honesty** • **Coding and testing:** • - Demonstrable experience designing, coding and debugging Java based systems • - Good skills in web front end technologies such as HTML, CSS, Bootstrap • - Java 8 • - 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.**** • **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.**** • **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.****

🏖️ Benefits

• 25 days paid holiday, plus bank holidays • Vitality medical insurance**Workplace Pension 5% employer contribution**Group Life Assurance**Cyclescheme**5 days a year for approved Training**WFH equipment allowance**Buy / Sell Holiday**2 days paid volunteering days • **Other benefits:**Flexible working**Work on exciting projects - make a difference**Empowered to make decisions**Encouraged to fail fast and learn quickly