Full-Time

Software Engineer

Ultra

Ultra

1,001-5,000 employees

Delivers defense technology for rapid decisions

No salary listed

Maidenhead, UK

In Person

UK Citizenship, UK Top Secret Clearance Required

Bachelor's

Category
Software Engineering (1)
Required Skills
Python
Software Testing
C#
C/C++
DevOps
Linux/Unix

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Requirements
  • Degree in an engineering, mathematical or science-based subject or equivalent experience.
  • Experience of embedded product development including bare-metal and RTOS such as ThreadX, QNX or Linux.
  • Embedded Linux application, kernel and/or driver development.
  • C and C++ experience.
  • Experience of Object-Oriented Design and Design Patterns.
  • Experience of software testing and design for test.
  • Experience of using version control, continuous integration and automated test tools and frameworks.
  • Willing and able to obtain, and maintain, SC security clearance.
  • Willing and able to obtain, and maintain, DV security clearance (following attainment of SC clearance).
Responsibilities
  • Implement software under the direction of the project’s software lead and engineering software lead.
  • SFIA Programming / software development: Level 2 - Designs, codes, verifies, tests, documents, amends and refactors simple programs/scripts.
  • Applies agreed standards and tools to achieve a well-engineered result.
  • Reviews own work.
  • Manage security of information as defined in the Security manual to ensure compliance with Government regulations.
  • Specify requirements, design, implement and test embedded software and/ or application software in accordance with the project software development process to ensure high quality and timely software deliverables.
  • Apply object-oriented design techniques to enable code re-use and integration with testing frameworks.
  • Review and understand system design artefacts to enable the derivation of software requirements and architecture that meet the high-level system requirements.
  • Design, document, review and maintain the software design using modelling tools such as RSA and EA, ensuring model can be used for accurate code generation as required.
  • Develop and maintain knowledge of best practice development processes, language standards and tools, e.g. TDD/BDD, Continuous Integration, DevSecOps, static and run-time analysis tools, C#/C++/Python/C standards and secure software development.
  • Estimate time and effort required for software activities and deliver to these time and effort estimates to ensure cost and schedule adherence.
  • Contribute to the Software Community of Practice by proposing improvements in tools, processes and techniques that support quality and innovation and make the software development more efficient and effective.
  • Actively contribute to defined aspects of the project to achieve optimal balance between requirements, schedule and cost.
  • SFIA Programming / software development: Level 3 - Designs, codes, verifies, tests, documents, amends and refactors moderately complex programs/scripts.
  • Monitors and reports on progress. Identifies issues related to software development activities. Proposes practical solutions to resolve issues.
  • Collaborates in reviews of work with others as appropriate.
Desired Qualifications
  • Python
  • JavaScript, node.js
  • Rust
  • Communications protocols – e.g. TCP/IP
  • Experience of best practice software development processes/lifecycles
  • Exposure to defensive coding techniques and standards such as MISRA
  • Knowledge of software engineering practices, methodologies, processes, techniques and technology trends
  • Experience of DOORS, RSA, Enterprise Architect, UML and SysML

Ultra Group provides advanced defense and security technology solutions, partnering with governments and defense agencies to address mission-critical challenges. Its products collect and deliver the right data to the right people at the right time, helping decision-makers act quickly in high-stakes situations. The company builds and deploys tailored systems that integrate data, analytics, and communications to support rapid, informed decisions, especially against near-peer threats and other technologically advanced adversaries. Unlike competitors, Ultra Group emphasizes ethical, responsible, and sustainable practices and relies on long-term government contracts to deliver customized, mission-focused solutions. Its ultimate goal is to make the world safer by using technology to improve decision speed and accuracy in defense and security operations.

Company Size

1,001-5,000

Company Stage

Post IPO Equity

Headquarters

London, United Kingdom

Founded

2018

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Simplify Jobs

Simplify's Take

What believers are saying

  • Booz Allen bought Ultra I&C Mission Solutions on June 22, 2026.
  • Airbus bought Ultra Cyber in March 2026, monetizing cybersecurity and reducing portfolio clutter.
  • Canadian Forces selected Archer troposcatter technology in March 2026 for operational trials.

What critics are saying

  • Lockheed Martin's July 2026 Ultra Maritime purchase strips most revenue and talent.
  • The May 2026 SFO bribery settlement forces three years of compliance reporting.
  • If remaining Ultra I&C sales stall, Advent owns a hollow tactical-communications shell.

What makes Ultra unique

  • Ultra I&C still sells tactical communications, crypto, and mission software for contested environments.
  • Lockheed Martin's July 2026 Ultra Maritime purchase validates undersea warfare leadership.
  • Ultra's cleared defense customer relationships and classified programs block easy entry.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

401(k) Company Match

Unlimited Paid Time Off

Flexible Work Hours

Hybrid Work Options

Paid Vacation

Professional Development Budget

Mental Health Support

Growth & Insights and Company News

Headcount

6 month growth

-6%

1 year growth

-6%

2 year growth

-6%
Turk & Strauss
Mar 19th, 2024
Ultra Electronics Data Breach Investigation

Recently, Ultra Electronics discovered that it had experienced a data breach in which sensitive personal information in its systems may have been accessed and acquired.

Executive Mosaic
Oct 10th, 2023
Ultra I&C Appoints Dawn Ohlson as VP Engineering for Ultra Cyber

Ultra I&C appoints Dawn Ohlson as VP Engineering for Ultra Cyber.

Military Embedded Systems
Sep 14th, 2023
Secure encryption, reduced SWaP in demand from DSEi attendees

To enable such trusted mobility Ultra is also getting close to releasing a new product called MAXAM, that is a rebrand of their existing BID\2510\11.

GovCon Wire
Aug 7th, 2023
Bradford Powell appointed C2I president at Ultra intelligence & communications; Jon Rucker quoted

Bradford Powell, a defense industry veteran, has joined Ultra’s intelligence and communications business as president of the command, control and intelligence segment.

GovCon Wire
Jul 21st, 2023
Clif Basnight joins Ultra I&C as strategic technologies VP

Clif Basnight, a 17-year U.S. Army veteran and former vice president at CACI International (NYSE: CACI), has joined Ultra Intelligence & Communications as VP of strategic technologies.