Company: Ultra Intelligence & Communications Cyber (UK) Business Powering Decision Join the team redefining defense technology. From engineering systems that save lives to leading programs that change the battlefield—find your place in the future of defense. Cyber Business Our Cyber business unit is at the forefront of pioneering advanced cryptographic and key management solutions, facilitating the confidential exchange of vital information for customers operating at both tactical and strategic echelons. Join our team and participate in the innovation that ensures the highest security and trust worldwide. Job Description The Ultra Engineering function manages a portfolio of specialist capabilities, generating highly differentiated solutions and products by applying electronic, mechanical, and software technologies in demanding and critical environments to meet customer needs. The Electrical and Electronic engineering function in Ultra supports the hardware development lifecycle consisting of requirements analysis, design, implementation, test and verification in order to deliver electronic or electrical components and subassemblies into projects and products. A professional at this grade possesses knowledge for specific fields and performs structured work assignments. Uses established procedures to solve problems by making judgments and gets work done with quality under moderate supervision. Has limited discretion to vary from established procedures. Scope Define, architect, design, develop, document and test FPGA firmware as part of our firmware engineering team, within the Communication Systems Business Unit, delivering multiple concurrent research, development and production programmes ranging from tens of £k to several £m. Responsible for / Key responsibilities Perform requirements analysis, requirements derivation from system level to firmware level requirements and architecture. Apply best and pragmatic practices to FPGA firmware design under the direction of the lead firmware engineer. Implement FPGA firmware modules and ensure that modules adhere to the project’s requirements and firmware group’s library policies for module reuse, coding standards, project development standards and security aspects. Review and understand requirements to produce firmware test specifications including module and full FPGA design test specifications. Ensure test procedures and processes are compatible with the project and firmware groups continuous integration systems. Undertake integration activities with software and hardware, requiring developing knowledge of both of these transversal domains. Proposes improvements in tools, processes and techniques that support quality and innovation and make the firmware development more efficient and effective. Actively contribute to defined aspects of the project to achieve optimal balance between requirements, schedule and cost. Contribute to customer facing meetings through document preparation, presentations and participation in meetings Estimate time and effort required for firmware activities and deliver to these time and effort estimates to ensure cost and schedule adherence. Review technical proposals, and assists with providing accurate estimates for the associated effort, costs and risks, for bids and proposals, leading to contract awards. Manage security of information as defined in the Security manual to ensure compliance with Government regulations. Role requirements Essential: Willing and able to obtain, and maintain, SC security clearance. Desirable: Willing and able to obtain, and maintain, DV security clearance. Qualifications / skills required Essential: Degree in an engineering, mathematical or science-based subject or equivalent experience Experience of FPGA module design and implementation Thorough experience of using Xilinx, Lattice, Altera or Microsemi FPGAs and their associated development tool chains Experience of FPGA firmware testing, test tools and design for test Ability to read, interpret and understand hardware schematics Experience of version control, change control and bug tracking tools and systems Desirable: Experience of/exposure to best practice firmware development processes/lifecycles Experience of/exposure to continuous integration and automated test tools and frameworks Exposure to coding standards for defence, space or air worthiness techniques and standards such as MISRA Experience of DOORS and Enterprise Architect Notice Due to the nature of the programs we deliver for our customers, candidates may need to obtain the relevant security clearance or handle export-controlled material as defined by the role's requirements. Applicants must be able to obtain and maintain the appropriate level of security clearance for the role. Due to the nature of our work, you must be a British Citizen who has been resident in the UK for the past 5 years in order to apply for SC clearance and 10 years for DV. For more information, please visit the UKSV website. Our Benefits Every employee is critical to our success, and as such, we offer a range of flexible employee benefits, including: Participation in an Annual Bonus Scheme Private Medical Cover 25 days’ holiday (plus Bank Holidays) with the option to buy an extra 5 days Pension Contribution 4 x Life Assurance Cover Flexible working hours with opportunity for a 1pm finish on a Friday Flexible benefits including cycle to work scheme, will writing and more Security Clearance Allowance – where relevant and subject to you holding the required security clearance Diversity, Equity & Inclusion Statement At Ultra I&C, we are an equal opportunity employer and value diversity and inclusivity. Underpinned by our values, behaviours, and policies, we want you to feel empowered to be the best version of yourself. We also believe that people from different backgrounds and cultures will increase our diversity of thinking, ensuring we successfully deliver to our customers. We, therefore, do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We also support requests for flexible working arrangements wherever possible. If you have any issues with your application, please email us at [email protected] Ultra I&C is powering decision speed across the multidomain battlespace with resilient tactical communications, mission optimization and encryption technologies. We secure, move and make sense of data across all domains—delivering real-time, mission-ready intelligence that gives operators at the edge the clarity to act and the speed to win. For decades, global defense forces and allied partners have relied on Ultra I&C to outpace threats and cut through complexity on the battlefield. Headquartered in Austin, Texas, we deliver battle-proven technology purpose-built for decision advantage in contested, high-threat environments.

more at Ultra.

26 Oct, 2026

Ultra

Principal Software Engineer

Staff level
Engineering

Maidenhead (GBR), United Kingdom

Salary not listed

more at Ultra.

Principal Software Engineer

Program Manager - Navy and USMC

C2I Sales Manager

similar roles.

Agent Advisor, Onboarding

Embedded Software Engineer (Embedded Systems &amp; Industrial IoT)

FPGA Design Engineer&nbsp;

Lab Manager, Materials & Process Engineering

Manufacturing Engineer I - Metals

Senior/Staff Forward-Deployed Engineer (Mobile)

more at Ultra.

Principal Software Engineer

Program Manager - Navy and USMC

C2I Sales Manager

similar roles.

Agent Advisor, Onboarding

Embedded Software Engineer (Embedded Systems &amp; Industrial IoT)

FPGA Design Engineer&nbsp;

Lab Manager, Materials & Process Engineering

Manufacturing Engineer I - Metals

Senior/Staff Forward-Deployed Engineer (Mobile)

Embedded Software Engineer (Embedded Systems & Industrial IoT)

FPGA Design Engineer

Embedded Software Engineer (Embedded Systems & Industrial IoT)

FPGA Design Engineer