U

Ultra

Delivers defense technology for rapid decisions

Principal Software Engineer

Full-TimeUpdated
No salary listed
Expert
Bachelor's, Master's
Maidenhead, UK
In PersonOn-site role in Maidenhead; British citizenship and UK residence history are required for the stated clearances.
Software EngineeringEmbedded Engineering
UK Citizenship Required

About the job

Requirements
  • 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.
  • A degree in an engineering, mathematical, or science-based subject, or equivalent experience.
  • Significant experience in at least one of embedded product development, including bare-metal and real-time operating systems such as ThreadX, QNX, or Linux; embedded Linux application, kernel, or driver development; or C and C++.
  • Significant experience of best-practice software development processes and lifecycles.
  • Experience of object-oriented design and design patterns such as SOLID.
  • Experience of software testing and design for test.
Responsibilities
  • Provide technical leadership and define, architect, design, develop, document, and test embedded and/or application software as part of a software engineering team of 5–20 engineers within the Cyber UK Business Unit, delivering concurrent research, development, and production programmes.
  • Architect, specify requirements, design, implement, and test embedded 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 reuse and integration with testing frameworks.
  • Review and understand system design artefacts to derive software requirements and architecture that meet high-level system requirements.
  • Design, document, review, and maintain software design using modelling tools such as RSA and EA, ensuring the model can support accurate code generation as required.
  • Develop and maintain knowledge of best-practice development processes, language standards, and tools, including test-driven development and behaviour-driven development, continuous integration, DevSecOps, static and runtime analysis tools, C++ standards, and secure software development.
  • Estimate the time and effort required for software activities and deliver to those 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 improve development efficiency and effectiveness.
  • Actively contribute to and/or lead defined aspects of projects to balance requirements, schedule, and cost.
  • Generate and review technical proposals and provide accurate estimates of associated effort, costs, and risks for bids and proposals, leading to contract awards.
  • Mentor and coach less experienced engineers and share knowledge constructively.
  • Review and sign off significant technical documents, and frequently chair technical reviews for significant deliverables.
  • Manage information security as defined in the Security Manual to ensure compliance with Government regulations.
  • Take technical responsibility across all stages and iterations of software development; plan and drive software construction activities; adopt and adapt suitable development methods, tools, and techniques; monitor application of project and team standards, including software security; and contribute to organisational software-development policies, standards, and guidelines.
  • Line-manage up to five software engineers.
Desired Qualifications
  • A Master's degree in an engineering, mathematical, or science-based subject, or equivalent experience.
  • Experience with Rust.
  • Experience with JavaScript, Node.js, or React.js.
  • Experience with communications protocols such as TCP/IP.
  • Experience using version control, continuous integration, and automated test tools and frameworks.
  • Exposure to defensive coding techniques and standards such as MISRA.
  • Advanced knowledge of software engineering practices, methodologies, processes, techniques, and technology trends.
  • Experience with DOORS, RSA, Enterprise Architect, UML, and SysML.

About the company

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

IPO

Headquarters

London, United Kingdom

Founded

2018

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Simplify's Take

What believers are saying

  • January 26, 2026 NAVSEA awarded Ultra Maritime a $59.6 million countermeasures contract.
  • April 2026 Navy selected Ultra Maritime for AN/SSQ-125B sonobuoy production.
  • August 26, 2026 Germany cleared Lockheed's Ultra acquisition, accelerating transaction closure.

What critics are saying

  • May 1, 2026 SFO DPA imposed £15 million for failure to prevent bribery.
  • March 21, 2026 Ultra sold Cyber to Airbus for £86 million, shrinking the platform.
  • July 6, 2026 Lockheed bought Ultra Maritime for $3.45 billion, risking Ultra's existential breakup.

What makes Ultra unique

  • Ultra Maritime dominates undersea warfare systems with torpedo countermeasures and sonobuoys.
  • Ultra wins long-duration Navy contracts, including MK3/MK4 countermeasures through January 2031.
  • Ultra combines underwater sensing, electronic warfare, and encryption for mission-critical defense customers.

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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

6 month growth

-5%

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.