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Company profile

SII Group UK Tech Stack

Embedded, systems and test engineering services for defence and space

IT Services and IT Consulting London, England 51–200 employees Founded 2015 Self-Owned
sii-group.com LinkedIn

SII Group UK is the London-based arm of an engineering services group, placing engineers on defence, space and transport programmes. Its stack is dominated by embedded and safety-critical tooling — Xilinx ISE, Quartus, RTOS, MIL-STD-1553, IBM DOORS, Polarion, TestStand — pointing to firmware, hardware and V&V work rather than enterprise IT. Hiring is almost entirely mid-to-senior engineering, aligned with legacy software modernisation and defence embedded projects.

Tech Stack 116 technologies

Core StackJava MongoDB Bitbucket Jira C++ C# Docker Podman Kubernetes Python Jenkins MATLAB Xilinx ISE GCC Quartus Code Composer Studio Bamboo Polarion TestRail IBM DOORS RTOS LabWindows/CVI TestStand TFTP Modbus MIL-STD-1553 Cadence Mentor Graphics Artifactory AUTOSAR+86 more

What SII Group UK Is BuildingChallenges and projects from their job posts

◆Challenges

  • Delivering complex mission-critical defence and space programmes
  • Hitting cost, schedule and quality delivery targets
  • Compliance with regulatory standards
  • Reducing manufacturing downtime

▲Active Projects

  • Embedded software for defence applications
  • Legacy software and simulator modernisation and migration
  • Spacecraft RF communication system development
  • Software-defined routing and virtualised network functions
  • Apriso improvements
  • ISO certification preparation

Hiring Activity

Steady25 roles · 6 in 30d

Department

Engineering
24
Manufacturing
1
Ops
1

Seniority

Mid
13
Senior
7
Manager
4
Junior
1
Lead
1
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About SII Group UK

SII Group UK is the United Kingdom entity of the SII engineering and technology consulting group, headquartered in London and employing 51–200 people. It provides software development, integration and verification, firmware, hardware and systems engineering, IT support, cyber security and project management to clients in aerospace and defence, transportation, telecoms, energy, automotive and banking. Current work spans defence embedded software, spacecraft RF communications and network virtualisation. Hiring is concentrated in the United Kingdom.

HeadquartersLondon, England
Company Size51–200 employees
Founded2015
Hiring MarketsUnited Kingdom

Frequently Asked Questions

What tech stack does SII Group UK use?

SII Group UK works with C++, C#, Java, Python, RTOS, Xilinx ISE, Quartus, Cadence, MATLAB, AUTOSAR, IBM DOORS, Polarion, TestRail, Jenkins, Bamboo, Docker and Kubernetes.

Is SII Group UK hiring engineers?

Yes. Hiring is steady and almost entirely in engineering, weighted toward mid and senior levels, with roles based in the United Kingdom.

What is SII Group UK working on?

Projects include embedded software for defence applications, legacy environmental simulator modernisation, spacecraft RF communication systems, software-defined routing and virtualised network functions.

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How this profile is built

SII Group UK's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.