Secure Full-Stack Developer (DV) – London Onsite

CBSbutler Holdings Limited trading as CBSbutler; City of Westminster; On-site; GBP 92,000 - 100,000; Full time

Job summary

CBSbutler Holdings Limited trading as CBSbutler is seeking a seasoned secure full stack developer to design, build and maintain applications using Java, Spring Boot, React and TypeScript for a Defence/National Security programme.

You will deliver scalable backend services, secure RESTful APIs and responsive frontend components, with data persistence across SQL/NoSQL stores. Onsite London work four days per week, DV clearance required, IR35 status outside UK regulations.

Qualifications

• Proven full stack development experience within MOD, Defence, National Security or similarly secure environments.
• Strong Java development experience.
• Strong Spring Boot experience.
• Strong React and TypeScript development experience.
• Experience designing and developing RESTful APIs.
• Experience with SQL and/or NoSQL databases.
• Experience building accessible and maintainable UI.
• Experience with CI/CD pipelines and DevSecOps practices.
• Current DV Security Clearance.
• Ability to work onsite at an MOD location in London four days per week.
• Previous experience delivering within MOD, Defence Intelligence, Strategic Command or wider National Security organisations.
• Comfortable working with OFFICIAL-SENSITIVE and classified material where authorised.

Responsibilities

• Design, develop and maintain secure full stack applications using Java, Spring Boot, React and TypeScript.
• Develop scalable backend services and secure RESTful APIs.
• Build intuitive, accessible and responsive frontend applications.
• Develop reusable frontend components aligned with established design system principles.
• Integrate frontend applications with backend APIs, workflow services and identity/access mechanisms.
• Design and implement data persistence using SQL and NoSQL technologies.
• Develop integrations with enterprise data sources and existing Defence systems.
• Contribute to cloud-native deployment, containerisation and CI/CD pipelines.
• Implement secure coding practices, logging, monitoring and audit capabilities.
• Write automated tests across frontend and backend components.
• Participate in technical design workshops, code reviews and agile ceremonies.
• Work closely with UX Designers, Product, Engineering and Defence stakeholders.
• Support continuous improvement of application performance, usability, reliability and security.

Skills

Full stack development

Java

Spring Boot

React

TypeScript

RESTful APIs

SQL

NoSQL

Docker

Kubernetes

Git

DevSecOps

CI/CD

DV Security Clearance

Tools

Docker

Kubernetes

Git

AWS

OpenSearch

ElasticSearch

Camunda

BPMN

Figma

Istio

MongoDB

Job description

CBSbutler Holdings Limited trading as CBSbutler is seeking a seasoned secure full stack developer to design, build and maintain applications using Java, Spring Boot, React and TypeScript for a Defence/National Security programme.

You will deliver scalable backend services, secure RESTful APIs and responsive frontend components, with data persistence across SQL/NoSQL stores. Onsite London work four days per week, DV clearance required, IR35 status outside UK regulations.