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Holt Executive is partnered with a leading electro-optics design and manufacturing business, seeking a highly skilled Senior Software Engineer to join their innovative team, supporting cutting-edge video and imaging processing products.

Key Responsibilities for Senior Software Engineer:
 

• Design, develop, and test application software and Linux drivers for video applications on custom embedded hardware.
• Provide technical support and integration assistance to international customers.
• Develop system specifications, test documentation, and unit tests in a continuous integration environment.
• Fault-find, debug, and resolve issues in complex systems.
• Assist with the administration and successful delivery of engineering projects.
• Continuously improve team procedures and working practices.
• Opportunity to take on team-leading responsibilities if desired.

Key Experience for Senior Software Engineer:
 
Essential: 

• Degree in Computer Science, Electronics, Mathematics, or Physics.
• Proven experience in C++ development for Windows and Linux using Microsoft Visual Studio.
• Expertise in Linux driver development for ARM processors.
• A team player with initiative and adaptability in an Agile environment.
• Strong technical leadership experience.

Desirable:

• Experience in video processing or computer vision algorithms.
• Video streaming application development and HMI development using OpenGL.
• Familiarity with CUDA, OpenCV, and GPU computing technologies.
• Experience interfacing with custom hardware and FPGAs.
• Customer-facing experience.
• Coaching and mentoring abilities to support team talent development.

Why Join? 

• Flexible hours: 37.5-hour week with lunchtime finishes on Fridays.
• Hybrid working: Enjoy the flexibility of remote and onsite work.
• Annual leave: 28 days, plus Christmas closure and a holiday purchasing scheme.
• Pension: Matched contributions up to 5%.
• Wellbeing support: Access to remote GP services, mental health pathways, physiotherapy consultations, and more.
• Professional growth: Excellent learning and development opportunities.
• Additional perks: Electric vehicle salary sacrifice scheme, gym discounts, high street rewards platform, and regular sports/social activities.

Security Clearance

Applicants must be eligible for UK Security Clearance, requiring proof of identity, employment history, and UK residency for at least five years.

Ready to make a difference?

Apply now to join a team where innovation meets impact. Your expertise will drive solutions that are relied upon in critical environments worldwide.

Holt Executive are working with an industry leader who provides technology and communication solutions to the maritime, energy and government sectors.

Our partner is looking for an Electrical Technician to support the build and test facility within their organisation.

The Electrical Technician will assemble, integrate, configure, test and repair various communication equipment for land base and offshore customers

 
Main Tasks for the Electrical Technician:

• Perform upgrades and troubleshooting on equipment.
• Perform testing with various Ku, Ka and C-band equipment.
• Complete all Build & Test documentation accurately and update online records.
• 19” equipment rack assembly, cable wiring including coaxial, ethernet, power and data termination and testing.
• Update and communicate job progress with supervisors and associated parties.
• Attend Project kick-off meetings.
• Identify and compile Bills of Material (BOM).
• Configuration and testing of equipment returned from customer site ensuring equipment is ready to be deployed at short notice.
• Return Materials Authorisation(RMA) co-ordination within and out with the region.
• Assist Field Service with on-call duties.
• General workshop duties. 

 
Qualifications & Professional skills for the Electrical Technician:

• Commercial field or military experience with satellite, RF, radar and microwave technologies.
• 2+ years experience in technical design and production in a Build & Test environment.
• Reliable and proven troubleshooting ability.
• Knowledge of electrical systems and wiring.
• Good knowledge and use of hand tools.
• Proficient use of test equipment including spectrum analysers, power meters, multi-meters and ethernet cable testers.

Holt Executive are partnered with a leading Global Satellite and Space leader that provides reliable and secure satellite-delivered voice and high-speed data communications solutions to broadcast, telecommunications, corporate and government customers worldwide. They are now developing a LEO constellation that will revolutionize global broadband connectivity for enterprise.
 
They require a Communication Systems Engineer – Payload to play a crucial role in developing a revolutionary end-to-end satellite communication system. You’ll collaborate with experts across disciplines to design and define their system’s architecture.
 
Key Responsibilities for the Communication Systems Engineer – Payload:

• Collaborate with cross-functional teams to define system architecture, system requirements, and network element specifications.
• Craft key aspects of the system, including communication protocols, resource allocation mechanisms, network entry mechanisms, management systems, and more.
• Lead and guide junior engineers, fostering their growth and expertise.
• Document the system architecture comprehensively for optimal performance and reliability.
• Collaborate with the System Integration and Test team for seamless integration of all system elements.
• Identify and manage technical risks related to the system design and develop mitigation strategies to stay ahead of industry trends.
• Contribute innovative ideas and collaborate with external partners for project success.

Key Education & Experience for the Communication Systems Engineer – Payload: 

• Bachelor’s, Master’s, or Ph.D. degree in Electrical Engineering, Aerospace Engineering, or a related field.
• Proven experience in satellite system architecture and design.
• Strong experience in Payload technology, and Radio Frequency (RF) engineering.
• Strong knowledge of satellite communication protocols, orbital mechanics, and space systems. Ideally with experience in software-defined satellite communication payloads.
• Familiarity with regulatory bodies and space industry standards.
• Must be a US or Canadian Citizen.

The successful candidate must be able to work in Canada and obtain Reliability Clearance.

This opportunity offers a hybrid work model with 4 days in the office per week and occasional travel is anticipated.
 
If your skills and experience match this Communication Systems Engineer – Payload opportunity, we encourage you to apply now!

Holt Executive is Hiring – Full Stack Software Engineer (Python)  Holt Executive is partnering with a pioneering space technology company to find a Full Stack Software Engineer – Python to join their dynamic team in Harwell, UK. This is an exciting opportunity to work on cutting-edge space missions, contributing to the development of ground segment software, mission control systems, and data services.

About the Role: As a Full Stack Software Engineer, you will play a key role in designing, developing, and maintaining web-based applications that support mission operations. You will collaborate with cross-functional teams to build scalable backend systems, intuitive front-end interfaces, and robust APIs, helping to ensure the success of complex space missions.

Key Responsibilities:

• Develop and maintain full-stack applications using Python, Django, and related frameworks.
• Build user-friendly front-end interfaces using React, Angular, or Vue.js.
• Design and implement RESTful APIs for mission-critical applications.
• Collaborate with data scientists, engineers, and mission operations teams to enhance data management and visualization tools.
• Optimize backend performance and ensure high reliability of data pipelines.
• Participate in code reviews, testing, and deployment of applications.
• Write and maintain comprehensive technical documentation.

Essential Skills:

• Proficiency in Python with experience in full-stack development.
• Strong knowledge of Django or Flask for backend development.
• Experience with JavaScript frameworks (e.g., React, Angular, Vue.js) for front-end development.
• Familiarity with RESTful APIs and web application architecture.
• Experience with SQL and NoSQL databases.
• Strong problem-solving skills and ability to work in a collaborative team environment.

Desirable Skills:

• Experience with Docker and Kubernetes for containerization and deployment.
• Familiarity with cloud platforms (AWS, Azure, or GCP).
• Knowledge of CI/CD pipelines and DevOps practices.
• Experience with data visualization libraries and tools.
• Knowledge of ground segment or space mission operations software.

What’s on Offer?

• Competitive salary and benefits package.
• Work on groundbreaking space technology projects.
• Hybrid working model with flexible hours.
• Private healthcare, life insurance, and relocation support.
• Access to state-of-the-art office and cleanroom facilities.
• Regular social events and professional development opportunities.

If you’re a talented Full Stack Software Engineer looking to make an impact in the space sector, apply today or contact Holt Executive for more details!

Holt Executive are partnered with a leading Global Satellite and Space leader that provides reliable and secure satellite-delivered voice and high-speed data communications solutions to broadcast, telecommunications, corporate and government customers worldwide. They are now developing a LEO constellation that will revolutionize global broadband connectivity for enterprise.
 
They require a Communication Systems Engineer – Payload to play a crucial role in developing a revolutionary end-to-end satellite communication system. You’ll collaborate with experts across disciplines to design and define their system’s architecture.
 
Key Responsibilities for the Communication Systems Engineer – Payload:

• Collaborate with cross-functional teams to define system architecture, system requirements, and network element specifications.
• Craft key aspects of the system, including communication protocols, resource allocation mechanisms, network entry mechanisms, management systems, and more.
• Lead and guide junior engineers, fostering their growth and expertise.
• Document the system architecture comprehensively for optimal performance and reliability.
• Collaborate with the System Integration and Test team for seamless integration of all system elements.
• Identify and manage technical risks related to the system design and develop mitigation strategies to stay ahead of industry trends.
• Contribute innovative ideas and collaborate with external partners for project success.

Key Education & Experience for the Communication Systems Engineer – Payload: 

• Bachelor’s, Master’s, or Ph.D. degree in Electrical Engineering, Aerospace Engineering, or a related field.
• Proven experience in satellite system architecture and design.
• Strong experience in Payload technology, and Radio Frequency (RF) engineering.
• Strong knowledge of satellite communication protocols, orbital mechanics, and space systems. Ideally with experience in software-defined satellite communication payloads.
• Familiarity with regulatory bodies and space industry standards.
• Must be a US or Canadian Citizen.

This opportunity is located out of Bethesda, Maryland and will require regular travel to Canada. Hybrid and remote will be considered. 
 
If your skills and experience match this Communication Systems Engineer – Payload opportunity, we encourage you to apply now!

Holt Executive is partnered with a leading electro-optics design and manufacturing business, seeking a highly skilled Senior Software Engineer to join their innovative team, supporting cutting-edge video and imaging processing products.

Key Responsibilities for Senior Software Engineer:
 

• Design, develop, and test application software and Linux drivers for video applications on custom embedded hardware.
• Provide technical support and integration assistance to international customers.
• Develop system specifications, test documentation, and unit tests in a continuous integration environment.
• Fault-find, debug, and resolve issues in complex systems.
• Assist with the administration and successful delivery of engineering projects.
• Continuously improve team procedures and working practices.
• Opportunity to take on team-leading responsibilities if desired.

Key Experience for Senior Software Engineer:
 
Essential: 

• Degree in Computer Science, Electronics, Mathematics, or Physics.
• Proven experience in C++ development for Windows and Linux using Microsoft Visual Studio.
• Expertise in Linux driver development for ARM processors.
• A team player with initiative and adaptability in an Agile environment.
• Strong technical leadership experience.

Desirable:

• Experience in video processing or computer vision algorithms.
• Video streaming application development and HMI development using OpenGL.
• Familiarity with CUDA, OpenCV, and GPU computing technologies.
• Experience interfacing with custom hardware and FPGAs.
• Customer-facing experience.
• Coaching and mentoring abilities to support team talent development.

Why Join? 

• Flexible hours: 37.5-hour week with lunchtime finishes on Fridays.
• Hybrid working: Enjoy the flexibility of remote and onsite work.
• Annual leave: 28 days, plus Christmas closure and a holiday purchasing scheme.
• Pension: Matched contributions up to 5%.
• Wellbeing support: Access to remote GP services, mental health pathways, physiotherapy consultations, and more.
• Professional growth: Excellent learning and development opportunities.
• Additional perks: Electric vehicle salary sacrifice scheme, gym discounts, high street rewards platform, and regular sports/social activities.

Security Clearance

Applicants must be eligible for UK Security Clearance, requiring proof of identity, employment history, and UK residency for at least five years.

Ready to make a difference?

Apply now to join a team where innovation meets impact. Your expertise will drive solutions that are relied upon in critical environments worldwide.

Holt Executive are supporting a leading defence industry organisation on their hire for an experienced Head of Commercial to support its business growth. The ideal candidate will have extensive experience negotiating and administering contracts with key defence customers, including UK and US government agencies and major defence contractors.

As a member of the Senior Management Team, you will lead commercial activities, collaborating with Business Development and Project Management teams to develop solutions for tenders and oversee contract management.

Key Responsibilities

• Lead contractual activities in tender processes, preparing responses and supporting bid approvals.
• Provide commercial risk guidance to the Senior Leadership Team, advising on terms and conditions.
• Draft and review agreements, ensuring compliance with due diligence policies.
• Support Supply Chain teams in subcontract negotiations.
• Advise and assist Project Management teams in contract execution from initiation to closure.
• Resolve contractual conflicts and ensure effective risk mitigation.
• Manage and develop the Commercial Team, ensuring best practices.

Skills & Experience Required 

 Essential:

• 10+ years’ experience.
• Strong knowledge of UK and international defence contracts, including pricing, financing, and contract law.
• Experience negotiating contracts and working across business boundaries.

 
 Personal Attributes:

• Independent thinker with strong leadership and negotiation skills.
• Ability to assess and mitigate contractual risks.
• Effective manager and team leader, able to drive process improvements.

Security Clearance

Due to the nature of the business, UK Security Clearance is required. Applicants must have proof of identity, employment history, and UK residency for at least five years.

Holt Executive is Hiring – Senior Spacecraft Systems Engineer  Holt Executive is partnering with a leading space technology company to find a Senior Spacecraft Systems Engineer to join their dynamic team in Harwell, UK. This is an exciting opportunity to work on innovative space missions, playing a key role in mission design, spacecraft system development, and technical leadership.

About the Role: As a Senior Spacecraft Systems Engineer, you will lead key aspects of mission architecture, system design, and verification processes, working on next-generation satellite platforms. You will collaborate with multidisciplinary teams to define mechanical, thermal, and propulsion system requirements, ensuring mission success.

This role is ideal for an experienced systems engineer with hands-on experience in spacecraft development, looking to mentor engineers, drive technical decisions, and contribute to groundbreaking space missions.

Key Responsibilities:

• Develop spacecraft mission and system designs, including requirements derivation.
• Lead validation and verification of mechanical, propulsion, and thermal subsystems.
• Perform mission analysis and spacecraft modelling to support design trade-offs.
• Manage satellite platform budgets, including mass and power constraints.
• Support the production of test and verification plans for system validation.
• Conduct feasibility studies for different satellite architectures.
• Assist with bid work, providing technical solutions and documentation.
• Maintain configuration control over system designs and documentation.
• Guide a multi-disciplinary engineering team in the delivery of spacecraft projects.

Essential Skills:

• Bachelor’s or Master’s degree in Systems Engineering, Electrical Engineering, or a related discipline.
• 10+ years of commercial experience in a systems engineering role for satellite platforms.
• Strong understanding of systems engineering principles, spacecraft constraints, and environmental testing.
• Experience in defining mechanical, thermal, and propulsion subsystem requirements.
• Knowledge of the full satellite project lifecycle, including review gates such as SRR, PDR, and CDR.
• Familiarity with key spacecraft subsystems, including GNC, C&DH, EPS, propulsion, communications, and ground segment operations.
• Experience in developing systems engineering documentation, including CONOPS, DDVP, ICDs, FMECA, and verification plans.
• Understanding of AIT (Assembly, Integration, and Test) processes, including manufacture, functional testing, and environmental testing.
• Awareness of space sustainability concepts, including debris removal and in-orbit servicing.

Desirable Skills:

• Experience in project management, procurement, bid support, or manufacturing.
• Proficiency in engineering and modelling tools (e.g., ModelSim, MATLAB, STK) and scripting languages such as Python.
• Knowledge of space regulations, licensing, and policy frameworks related to space sustainability.
• Familiarity with missions related to debris removal, in-orbit servicing, or autonomous spacecraft operations.

What’s on Offer?

• Competitive salary and benefits package.
• Work with a highly talented, international team on cutting-edge space missions.
• Hybrid working and flexible schedule options.
• Private healthcare, life insurance, and relocation support.
• Access to state-of-the-art office and cleanroom facilities.
• Regular social events and career development opportunities.

If you are a highly skilled spacecraft systems engineer looking to lead impactful space missions, apply today or contact Holt Executive for more details!

Holt Executive is Hiring – Digital Electronics Engineer (C&DH)  Holt Executive is partnering with a leading space technology company to find a Digital Electronics Engineer (Command & Data Handling) to join their team in Harwell, UK. This is an exciting opportunity to play a key role in the development of mission-critical spacecraft electronics, supporting innovative space missions that push technological boundaries.

About the Role: As a Digital Electronics Engineer (C&DH), you will be responsible for designing, developing, and testing electronic systems for spacecraft, covering the full lifecycle from early design to assembly, integration, and verification (AIV). The role involves working on complex spacecraft data handling architectures, interface design, and system testing, ensuring the smooth operation of mission-critical electronics.

This position offers the opportunity to shape the direction of C&DH engineering within a growing and dynamic team, contributing to space missions that require high-speed data processing, precision control, and fault-tolerant electronics.

Key Responsibilities:

• Develop and design Command & Data Handling (C&DH) subsystems for spacecraft.
• Define subsystem requirements, test plans, and verification processes.
• Manage data processing and power budgets for onboard electronics.
• Design and review C&DH architectures, ensuring compatibility with mission needs.
• Conduct FMECA (Failure Mode, Effects, and Criticality Analysis) and FDIR (Fault Detection, Isolation, and Recovery) processes.
• Collaborate with system engineers, ground segment teams, and operations teams to integrate and validate spacecraft systems.
• Plan, prepare, and execute electrical subsystem and system-level verification tests, including writing test scripts and supporting environmental testing.
• Work with suppliers and procurement teams to define specifications and evaluate C&DH equipment.

Essential Skills:

• Bachelor’s or Master’s degree in Electrical Engineering or a related discipline.
• 2+ years of commercial experience in electronic and/or system design for satellite Command & Data Handling (C&DH) systems.
• Experience working with industry-standard spacecraft communication protocols such as CCSDS, I2C, RS422, SpaceWire, and CAN.
• Understanding of C&DH system operations, avionics interfaces, and mission electronics.
• Hands-on experience in developing and executing test plans for spacecraft avionics.
• Strong knowledge of systems engineering and requirements management throughout the project lifecycle.

Desirable Skills:

• Experience with FPGA design using Verilog/VHDL.
• Proficiency in Python for test scripting.
• Hands-on experience handling and testing flight hardware in a cleanroom environment.
• Knowledge of GNSS systems and time synchronization for satellites.
• Understanding of radiation tolerance analysis and space-grade electronics for Low Earth Orbit (LEO).
• Familiarity with space sustainability initiatives, such as active debris removal and in-orbit servicing.

What’s on Offer?

• Competitive salary and benefits package.
• Work with a highly skilled, international team on cutting-edge space electronics.
• Hybrid working and flexible schedule options.
• Private healthcare, life insurance, and relocation support.
• Access to state-of-the-art office and cleanroom facilities.
• Regular social events and professional development opportunities.

If you’re passionate about digital electronics and spacecraft C&DH systems, apply today or contact Holt Executive to learn more!

Holt Executive is Hiring – Senior GNC Engineer (Space Missions) Holt Executive is partnering with a cutting-edge space technology company to find a Senior GNC Engineer to join their expert team. This is an exciting opportunity to work on advanced Guidance, Navigation, and Control (GNC) systems, contributing to the development of rendezvous, proximity operations, and docking (RPO) missions that are shaping the future of space sustainability.

About the Role: As a Senior GNC Engineer, you will be responsible for developing and validating trajectory planning, guidance algorithms, and navigation filters for complex spacecraft rendezvous and docking operations. You will work closely with flight dynamics, software, and systems engineering teams to create robust, fault-tolerant GNC solutions that ensure mission success.

This role is ideal for an engineer with a strong background in GNC algorithm development, aerospace simulations, and system-level analysis, looking to contribute to next-generation space missions.

Key Responsibilities:

• Design, implement, and validate GNC algorithms for RPO and spacecraft manoeuvres.
• Develop simulator models to support guidance and control system validation.
• Ensure configuration control and logical management of GNC software solutions.
• Support software architecture development, leading towards an integrated GNC software solution.
• Conduct research into state-of-the-art GNC algorithms and implement innovative solutions.
• Collaborate with QA and production teams to transition GNC developments into scalable solutions.

Essential Skills:

• Bachelor’s or Master’s degree in Aerospace Engineering or a relevant discipline.
• Proficiency in MATLAB/Simulink, Python, and C/C++ for aerospace simulations.
• Strong experience in GNC algorithm design (e.g., navigation filters, guidance strategies, control systems).
• Experience in fault-tolerant GNC system design and software development.
• Understanding of systems engineering principles and best practices.
• Ability to work independently and as part of a multidisciplinary engineering team.
• Strong problem-solving skills, balancing innovation and on-time delivery.

Desirable Skills:

• Knowledge of GNC rendezvous sensors and pose estimation techniques.
• Hands-on experience with GNC hardware Assembly, Integration, and Verification (AIV).
• Familiarity with Active Debris Removal (ADR) and RPO mission concepts, such as ESA CleanSpace projects, DARPA Express, or DEOS.

What’s on Offer?

• Competitive salary and benefits package.
• Work with a highly skilled, international team on cutting-edge space technology.
• Hybrid working and flexible schedule options.
• Private healthcare, life insurance, and relocation support.
• Access to state-of-the-art office and cleanroom facilities.
• Regular social events and professional development opportunities.

If you’re passionate about advancing space mission GNC systems, apply today or contact Holt Executive for more details!