Zaizi

Senior Software Engineer

Zaizi
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1 month ago
London, United KingdomSenior

Responsibilities

  • Design and build resilient web applications, microservices, APIs, and backend services for MoD cloud and hybrid landing zones.
  • Develop native Android background services in Kotlin or Java, including thread management and IPC through AIDL and Binders.
  • Build data routers and integrations connecting C2 displays such as OmniTAK and ATAK with backend services.
  • Implement NCSC Secure Development Principles, NCSC Cloud Security Guidance, JSP 440 controls, and Secure by Design practices.
  • Automate build, test, and containerisation pipelines for air-gapped and enterprise cloud environments using Docker, GitOps, GitLab CI, and GitHub Actions.
  • Lead technical user stories on funded MoD statements of work and mentor mid-level engineers.

Requirements

  • Active UK SC Clearance and compliance with UK nationality or sovereignty requirements.
  • Hands-on experience delivering under MoD software development standards and Secure by Design frameworks.
  • At least 4 years of production experience with modern web stacks including TypeScript, React, Node.js, or Python/FastAPI.
  • Strong API design experience with REST, GraphQL, gRPC, and WebSocket, plus relational and non-relational database design.
  • Proficiency in Kotlin or Java on native Android environments, including background services, thread management, and IPC via AIDL or Binders.
  • Understanding of event-driven architectures, local socket communication, and memory optimisation in resource-constrained environments.
  • Experience with TAK/ATAK, WinTAK, OmniTAK, Cursor-on-Target, or STANAG 4586 is desirable.
  • Familiarity with K3s, Podman, Room, RocksDB, Def Stan 00-056, Def Stan 00-055, or ALARP risk management is desirable.

Benefits

  • £60,000–£75,000 salary with annual salary reviews.
  • Hybrid working with a work-from-home equipment allowance.
  • Employer pension contribution starting at 5%, increasing to a maximum of 8%.
  • Group Life Assurance and Vitality Private Medical Insurance with Apple Watch, gym discounts, and rewards.
  • 25 days annual leave plus Bank Holidays, with the option to buy or sell additional days.
  • 10 paid days for Reservist Military Service and 2 paid volunteering days per year.
  • Fully funded professional certifications, including AWS, GCP, and Agile, plus 5 days of paid study leave.
  • £500 annual Personal Choice learning fund, professional coaching, and team training.
  • Cycle to Work scheme.

Tech Stack

Zaizi

About Zaizi

51-200 employees
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