Senior System Engineer (SFIA4)

Company: Zaizi Ltd

Location: London

Posted: April 22nd, 2026

Overview

We are seeking a high-calibre Systems Engineer to lead the technical delivery of complex programmes within the UK Defence and National Security sector. This role is pivotal in shaping the next generation of mission-critical capabilities, integrating cutting-edge Cloud-native architectures, Data-driven decision-making tools, and Artificial Intelligence (AI) into robust, safety-critical environments.

The successful candidate will act as a technical bridge between strategic vision and engineering execution, ensuring that rapidly evolving digital technologies are deployed with the rigour and security required for national protection. You will be responsible for the end-to-end systems lifecycle, from influencing customer requirements at the C-suite level to providing technical overwatch during complex system integration.

Role Objectives

These are the expected objectives for this role. We are happy to discuss this further during the interview process with the successful candidate.

Requirements

Technical Standards & Regulatory Framework

The successful candidate will ensure that all engineering activities comply with the following mandatory and advisory standards:

Soft Skills

Salary £75,000 - £98,000

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

Compensation

Purpose & Culture

Work / Life Balance

Development & Growth

Health & Balance

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