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Holt Executive are partnered with a 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.

Our partner is seeking a Senior OSS/BSS Application Specialist to play a vital role in the administration, configuration, and support of the OSS/BSS suite.

Key Responsibilities for the Senior OSS/BSS Application Specialist:

• Configure, customize, and maintain OSS/BSS modules such as order management, inventory management, service fulfillment, and billing.
• Monitor application performance and proactively identify, diagnose, and resolve issues.
• Collaborate with business and IT stakeholders to gather requirements and translate them into technical specifications.
• Participate in system upgrades, patching, and release deployments to ensure smooth operations.
• Support integration between OSS/BSS applications and other enterprise systems (e.g., CRM, ERP, network management platforms).
• Analyze and enhance workflows to improve user experience and operational efficiency.
• Provide Level 2/3 support for incidents and service requests.
• Coordinate with vendor support teams to resolve issues and manage change requests.
• Develop and maintain technical documentation, standard operating procedures, and user guides.
• Support user training and onboarding activities.

Key Skills & Experience for the Senior OSS/BSS Application Specialist:

• A degree in Computer Science, Information Technology, Telecommunications, or a related field.
• 3+ years of experience in the support and/or implementation of Netcracker OSS/BSS applications.
• A strong understanding of telecom business processes (order to cash, service provisioning, customer lifecycle management).
• Experience with relational databases (Oracle, PostgreSQL), as well as UNIX/Linux environments, and shell scripting.
• Some experience with integration technologies including SOAP/REST APIs, XML, and middleware platforms.
• Knowledge of ITIL practices and experience using ITSM tools.
• Experience with network inventory and resource modeling within Netcracker.
• knowledge of DevOps practices and tools is a bonus.

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

This opportunity offers a hybrid work model with 4 days in the office per week.
 
If your skills and experience match this Senior OSS/BSS Application Specialist opportunity, we encourage you to apply now!

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A fantastic opportunity has opened for an experienced Product Assurance Manager to take a leading role across one or more flagship space missions. This position offers the chance to contribute to both flight hardware and software, as well as ground systems, within a cutting-edge In-Orbit Service, Assembly, and Manufacturing programme.

This role is available at Senior or Principal level depending on experience.

You will be responsible for driving Product and Quality Assurance across complex engineering projects, working closely with project managers, engineering teams, suppliers, and external partners.

Key Responsibilities:

• Lead Product and Quality Assurance activities within project teams
• Provide PA/QA support across multiple programmes
• Coordinate with customer PA/QA representatives when required
• Support supplier and subcontractor assurance activities, including audits and process assessments
• Review materials, parts, and processes against PA and technical requirements
• Produce assurance documentation and lead implementation of project assurance plans
• Witness manufacturing and testing activities, including work conducted at third-party facilities
• Maintain quality control records and related data
• Contribute to the ongoing development and improvement of the organisation’s Quality Management System
• Support proposal preparation with assurance inputs
• Review work produced by other PA Managers and provide constructive feedback
• Mentor junior team members and delegate tasks as Project PA Lead
• Ensure project work progresses efficiently and in line with programme requirements

Essential Skills & Experience

• 5+ years in Product Assurance and/or Quality Assurance, ideally within the space or aerospace sectors
• Ability to lead functional groups and ensure compliance with assurance requirements
• Strong technical understanding of high-reliability systems
• Logical, practical approach to problem-solving
• Comfortable working independently as well as within multidisciplinary teams
• Excellent organisational and schedule management abilities
• Adaptability to shifting priorities and project changes
• Strong interpersonal skills and confidence in communicating across teams
• Excellent written and verbal communication skills in technical English

Desirable Skills

• Experience working with national space agencies
• QMS Internal Auditor certification or third-party reviewer experience
• Experience in ground segment product assurance
• Experience in software product assurance

Benefits

• Work alongside a highly skilled, diverse, and international team developing innovative space technologies
• Flexible working around core hours
• Optional 9/75 working pattern
• Hybrid working options (role-dependent)
• 25 days’ holiday (rising annually to a max of 28) + 8 bank holidays
• Life insurance and long-term sick pay
• Private healthcare (taxable benefit)
• Relocation allowance
• Visa sponsorship considered
• Modern office and cleanroom facilities
• Regular team and social events

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An exciting opportunity has arisen for a Validation & Verification Engineer to join a leading flight software team working on cutting-edge space missions. This role offers the chance to contribute to next-generation orbital debris removal and satellite servicing projects, a truly unique opportunity to make an impact on the future of space sustainability.

We’re looking for someone with a strong background in real-time embedded software who’s ready to take the next step in their career and play a key role in ensuring flight software reliability, performance, and safety.

You’ll be responsible for the verification and validation (V&V) of onboard flight software for satellite missions, defining solutions based on system requirements and collaborating across subsystems to ensure robust, high-quality software delivery.

Key Responsibilities:

• Participate in the validation and verification of flight software for satellite onboard computers.
• Review technical specifications and requirements documents (SRS, ICD, SDD, etc.).
• Design, implement, and automate test cases and scripts.
• Develop and maintain test environments and simulators.
• Identify and implement test equipment solutions.
• Collaborate with subsystem teams to define software needs and interfaces.
• Contribute to technical reviews and knowledge sharing across projects.

Essential Skills:

• Proven experience designing and automating test cases for real-time embedded software.
• Strong programming ability in Python, including dependency and environment management.
• Experience in software validation facilities (numerical, hybrid, or hardware-based).
• Familiarity with Git and modern software development workflows.
• Background in space software verification and validation (C/C++).
• Understanding of communication protocols (PUS, CCSDS, CAN, SpaceWire).
• Knowledge of ECSS standards, especially ECSS-E-ST-40C.
• Strong understanding of the software development lifecycle.
• Proactive, self-managing, and able to take ownership while working collaboratively.

Desirable Skills:

• Experience with RTOS platforms (VxWorks or RTEMS).
• Familiarity with CI/CD pipelines and UML.
• Experience with Linux environments, shell scripting, and QT-based applications.
• Knowledge of cFS framework, SPARC V8 or PowerPC architectures.
• Understanding of mission design lifecycles from concept to operations.

What’s on Offer

• Competitive salary
• Flexible working around core hours (optional 9/75 pattern)
• Hybrid working options
• 25–28 days annual leave + bank holidays
• Private healthcare, life insurance, and long-term sick pay
• Relocation support & visa sponsorship (where applicable)
• Modern, state-of-the-art workspace
• Regular team and social events
• Opportunity to work with an international team on pioneering space technology

If you’re an experienced Flight Software Engineer or Verification Specialist ready to contribute to mission-critical space systems, we’d love to hear from you.

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An exciting opportunity for a Software Engineer to join a growing team developing marine-based systems used in complex, real-world environments. This role focuses on User Interface design and development, contributing to high-integrity, mission-critical software solutions that make a real impact.

You’ll work across the full engineering lifecycle, from design and prototyping to delivery and support, as part of a multidisciplinary team building next-generation maritime technology.

What you’ll be doing

• Designing and developing high-quality software for marine-based applications
• Creating and refining user interfaces with a strong focus on usability and performance
• Supporting testing, integration and delivery of software solutions
• Collaborating with hardware and systems engineers to deliver cohesive, safe, and secure solutions
• Providing mentorship and technical guidance to junior team members

What you’ll bring

• Proven experience in software delivery using Java
• Strong understanding of software engineering principles, tools, and lifecycle processes
• Experience with UI/UX design, JavaFX, and UML design (Enterprise Architect experience a plus)
• Strong communication skills with the ability to engage users and stakeholders
• A proactive, team-oriented approach and commitment to high-quality outcomes

Desirable experience

• Java build systems (Maven) and version control (Git)
• Atlassian toolset (Jira, Bitbucket, Confluence)
• Database interfacing and service/subscriber architectures
• DevOps tools (Jenkins, SonarQube, Artifactory)

Why apply?

• Hybrid and flexible working arrangements (full-time, part-time, or condensed hours)
• Excellent development and progression opportunities
• Collaborative and supportive engineering culture
• Competitive salary and benefits

Security Clearance: Applicants must be eligible to obtain UK Security Clearance (SC).

Join a cutting-edge engineering team developing autonomous systems for the next generation of marine and defence technology. This is a fantastic opportunity for an experienced Software Engineer to take a leading role in designing, developing, and delivering advanced software solutions that operate in challenging real-world environments.

You’ll work across the full software lifecycle, from concept and design through to integration, testing and delivery, as part of a multidisciplinary engineering team shaping the future of maritime autonomy.

What you’ll be doing

• Designing and developing software for advanced autonomous systems
• Supporting integration and delivery activities across complex engineering projects
• Collaborating with hardware, systems and domain experts throughout the development lifecycle
• Engaging directly with end users to refine functionality and performance
• Taking a lead role in development discussions and cross-team collaboration

What you’ll bring

• Proven experience in software design and delivery
• A degree (or equivalent experience) in Software Engineering, Computer Science, or a related discipline
• Knowledge of autonomous system architectures and the marine or defence domain
• Strong understanding of software engineering processes, tools, and lifecycles
• Experience working in multi-disciplinary engineering environments

Technical skills

Essential:

• Java development
• Java build systems (e.g. Maven)
• Experience with the Atlassian toolset (Jira, Confluence, Bitbucket)
• Knowledge of ISO 9001 quality principles

Desirable:

• HMI / UI development (e.g. JavaFX)
• GIS development
• Communication and control system interfaces
• Git version control
• UML design

Why apply?

• Hybrid and flexible working options (full-time, part-time or condensed hours)
• Excellent professional development and progression opportunities
• Collaborative and innovative engineering culture
• Competitive salary, pension and benefits

Security Clearance: Applicants must be eligible to obtain UK Security Clearance (SC).

A fantastic opportunity has arisen for an experienced Senior Mission Operations Engineer to join a growing and dynamic space engineering team in Harwell, supporting current and future orbital missions.

This position offers the chance to take a leading role in all phases of mission operations, from feasibility and early development, through LEOP, routine operations, and end-of-life management. It’s a broad and varied role that combines responsibilities across mission planning, spacecraft operations, systems engineering, and mission management.

You’ll be part of a small, highly skilled team developing and operating next-generation space missions — with the freedom to innovate, drive improvements, and shape the operational approach across a growing fleet of spacecraft.

For this role we can consider visa sponsorship and relocation support.

What You’ll Do

• Act as an operations technical lead across multiple missions and projects.
• Provide mentorship and guidance to less experienced operations engineers.
• Perform real-time spacecraft operations during routine and critical mission phases.
• Develop and maintain mission operations procedures, validation tests, and tools.
• Contribute to planning, scheduling, and coordination with spacecraft engineering, flight dynamics, and ground systems teams.
• Prepare mission documentation, including user manuals and operations plans.
• Support development of mission operations concepts and operability requirements.
• Lead anomaly investigations, performance monitoring, and trend analysis.
• Participate in 24/7 operations shifts during key mission events as required.

What You’ll Bring

• Degree in a relevant engineering discipline.
• 5–10 years of satellite industry experience, ideally in real-time spacecraft operations for LEO missions.
• Strong understanding of satellite subsystems (AOCS/GNC or OBDH advantageous).
• Hands-on experience with mission control systems, operations tools, and simulators.
• Proven ability to perform under pressure and manage anomalies calmly and effectively.
• Excellent problem-solving skills and attention to detail.
• Ability to develop and deliver innovative operations concepts for multi-satellite missions.
• Confident communicator, fluent in English (CEFR Level B2 / TOEIC 700+).

Desirable Skills

• Experience with SCOS-2000 mission control systems.
• Knowledge of systems engineering principles for operations.
• Familiarity with formation flying or close-proximity satellite operations.
• Understanding of flight dynamics, orbital mechanics, and ECSS operations standards.

What’s on Offer

• Flexible and hybrid working environment.
• Opportunities to work on cutting-edge space missions and technologies.
• Relocation and visa sponsorship support where applicable.
• 25 days’ annual leave (increasing with service) plus bank holidays.
• Private healthcare, life insurance, and long-term sick pay.
• Modern facilities including new office and cleanroom.
• Friendly, collaborative, and international team culture.

If you’re passionate about space operations, thrive in dynamic mission environments, and want to play a key role in shaping the future of sustainable space missions, we’d love to hear from you.

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Are you an experienced Computer Vision engineer ready to take the next step in your career? This is an opportunity to lead a high-performing Computer Vision & Robotics team developing real-time image processing and autonomy software for spacecraft and ground systems.

You’ll play a key role in advancing technologies that enable close-proximity operations and on-orbit servicing, designing algorithms for object detection, tracking, and pose estimation in some of the most challenging environments imaginable.

What You’ll Do

Leadership & Team Development

• Lead a team of Computer Vision engineers, providing technical guidance and mentorship.
• Oversee project delivery, ensuring quality, performance, and timely execution.
• Collaborate with GNC, Software, and Systems teams across multiple mission projects.
• Foster innovation and continuous learning within a collaborative engineering culture.

Technical Responsibilities

• Design and implement computer vision modules for spacecraft navigation and autonomy.
• Develop and benchmark algorithms for pose estimation, tracking, and visual perception.
• Deliver efficient, high-quality CV software suitable for real-time and safety-critical applications.
• Contribute to simulation, verification, and validation of vision-based navigation systems.

About You

• Degree (BSc/MSc) in Computer Science, Software Engineering, Robotics, or similar.
• 5+ years of hands-on experience in computer vision algorithm design and implementation.
• 3+ years leading or mentoring a technical team.
• Strong programming skills in Python, C/C++, or Matlab, with experience in OpenCV, TensorFlow, or PyTorch.
• Solid understanding of deep learning, sensor fusion, and image-based navigation.
• Excellent problem-solving, communication, and organisational skills.
• Familiarity with version control (Git) and modern software development practices.
• A passion for space systems and a desire to shape the next generation of autonomous spacecraft.

Desirable:

• Experience in vision-based navigation for space or robotics applications.
• Knowledge of rigid-body dynamics, kinematics, and embedded systems development.
• Experience in CI/CD, TDD, and real-time or safety-critical environments.

What’s On Offer

• Flexible hybrid working around core hours
• 25 days annual leave (rising with service) + bank holidays
• Private healthcare, life insurance, and long-term sick pay
• Optional 9/75 working pattern
• Relocation and visa support (where applicable)
• State-of-the-art facilities and a genuinely collaborative environment
• Regular team and social events

This is a unique opportunity to lead cutting-edge work at the intersection of computer vision, robotics, and space, contributing directly to technologies that are shaping a sustainable future in orbit.

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A leading space engineering organisation is seeking an Embedded Flight Software Engineer to join its growing flight software team, developing real-time embedded software for next-generation orbital missions.

This is an exciting opportunity for an experienced engineer to work on technically challenging and high-impact projects, developing onboard flight software for spacecraft and contributing to missions designed to enable safe and sustainable space operations.

You’ll take ownership of key aspects of flight software design, definition, integration, and validation, working closely with multi-disciplinary teams across spacecraft systems, GNC, and avionics.

For this role we can consider visa sponsorship and relocation support.
 

Key Responsibilities

• Design, develop, and validate real-time embedded flight software for satellite onboard computers.
• Define software architecture, ICDs, and development and verification plans.
• Collaborate with systems and subsystem teams to identify software requirements and deliver solutions.
• Perform integration, verification, and validation activities on target and in simulation.
• Support mission testing and simulation campaigns.
• Contribute to continuous improvement and knowledge sharing across projects and global teams.

Essential Skills & Experience

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a relevant engineering discipline.
• Proven experience developing software for real-time embedded systems (C/C++).
• Strong understanding of real-time operating systems (e.g. VxWorks, RTEMS).
• Experience implementing equipment drivers and ICDs.
• Proficient with Git version control and modern software development workflows.
• Experience developing and executing test plans and debugging software both in simulation and on target.
• Strong problem-solving skills and ability to work proactively with minimal supervision.

Desirable Skills

• Experience developing software for space systems or other high-reliability environments.
• Experience with VxWorks and familiarity with PowerPC architecture.
• Knowledge of communication protocols such as CCSDS, CAN, and SpaceWire.
• Understanding of software standards such as MISRA and familiarity with ECSS standards.
• Experience with NASA cFS framework.
• Proficiency with Linux, shell scripting, build systems, and Python.
• Experience across the full mission lifecycle from concept to operations.

What’s on Offer

• Opportunity to work with a highly skilled and diverse international team.
• Flexible working around core hours with a hybrid setup.
• Optional compressed working pattern (9/75).
• 25 days annual leave (increasing with service) plus bank holidays.
• Private healthcare, life insurance, and long-term sick pay.
• Relocation assistance and visa sponsorship (where applicable).
• State-of-the-art office and cleanroom facilities.
• Supportive, collaborative environment with regular social and professional development events.

If you’re passionate about developing software that powers real-world space missions and want to contribute to the future of sustainable space operations, we’d love to hear from you.

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An exciting opportunity has arisen for a Senior Full Stack Software Engineer to join a high-performing Ground Segment Software team developing advanced mission-control solutions for cutting-edge space missions.

You’ll play a key role in designing, building, and maintaining mission-critical software systems that enable satellite operations and support a new generation of space sustainability projects. This is a hands-on, technically challenging role ideal for someone who thrives in complex, high-impact environments, whether from the space, defence, aviation, telecoms, or automotive sectors.

For this role we can consider visa sponsorship and relocation support.

What You’ll Do

• Design, develop, and maintain scalable, high-performance back-end services using modern programming languages.
• Architect and build responsive, interactive front-end applications using modern frameworks.
• Design, optimize, and manage databases for reliability and performance.
• Build and manage containerized applications using Docker and Kubernetes.
• Develop and maintain CI/CD pipelines to streamline software delivery.
• Collaborate with cross-functional teams to define, design, and implement new features.
• Troubleshoot complex issues across the stack, applying strong problem-solving skills.
• Lead and contribute to Agile/SCRUM processes including sprint planning and retrospectives.

What You’ll Bring

• Bachelor’s degree in Computer Science, Engineering, or a related discipline (or equivalent experience).
• 5+ years’ experience developing mission-critical software in the space or similar high-reliability industries.
• Proven full stack development background.
• Strong proficiency in object-oriented programming (Java, Python, or C++).
• Extensive experience building frontend applications with frameworks such as React.

Desirable Skills

• Hands-on experience with Docker, Kubernetes, or Docker Compose.
• Experience with CI/CD tools such as GitLab CI or GitHub Actions.
• Strong command of SQL databases, data management, and Git-based workflows.
• Experience in Agile/SCRUM environments.
• Familiarity with CCSDS or ECSS communications standards.
• Understanding of Ground Segment systems and mission operations.
• Experience with AWS or Azure cloud platforms.
• Awareness of software security best practices and coding standards.

What’s on Offer

• Opportunity to work with a talented, diverse, and international engineering team.
• Flexible working around core hours in a collaborative, supportive environment.
• Hybrid working model with an optional 9/75 compressed schedule.
• 25 days’ annual leave (increasing with service) + 8 bank holidays.
• Private healthcare, life insurance, and long-term sick pay.
• Relocation assistance and visa sponsorship (where applicable).
• Modern office and cleanroom facilities.
• Regular social and professional development events.

If you’re passionate about software engineering and eager to help build the systems powering next-generation space missions, this is a fantastic opportunity to make a real impact.

RW

An exciting opportunity has arisen for an experienced Senior Ground Segment Systems Engineer to join a leading space engineering team developing the infrastructure and software that enable mission-critical spacecraft operations.

This is a high-impact role with significant autonomy, where you’ll lead the development of ground systems from concept through to maintenance, shaping the technology that supports safe and efficient mission control. You’ll act as a bridge between Mission & Systems Engineering and Operations, ensuring that ground systems are robust, integrated, and ready to deliver across all phases of flight operations.

This role suits an engineer with a strong understanding of ground segment architecture and experience across multiple missions, who’s ready to take ownership and mentor others in a fast-paced, innovative environment.

For this role we can consider visa sponsorship and relocation support.

Key Responsibilities

• Lead and contribute to the development of ground systems including Mission Control, Mission Planning, and Ground Station Interface Systems.
• Define ground segment requirements and oversee delivery of specific components.
• Act as technical lead or product owner, interfacing with both internal teams and external suppliers.
• Follow Agile (SCRUM) methodologies to deliver on requirements, schedule, and quality.
• Develop and maintain project documentation including requirements, V&V plans, test procedures, and reports.
• Support verification and validation, system integration, and simulation campaigns.
• Provide technical support and training to operations teams using ground systems.
• Troubleshoot, maintain, and enhance operational ground segment components.

What You’ll Bring

• Degree in Computer Science, Telecommunications, or a relevant engineering discipline.
• Minimum 5 years’ experience in satellite ground systems engineering.
• Strong understanding of the ground segment architecture and its core components (mission control, mission planning, and communications systems).
• Solid grasp of requirements engineering, system integration, and verification and validation.
• Excellent communication and reporting skills, comfortable collaborating with international teams.
• Fluent in English, written and spoken.

Desirable Skills

• Experience with Mission Control Systems (preferably SCOS-2000-based).
• Knowledge of automation and mission planning systems.
• Familiarity with ground stations and antenna communications.
• Understanding of satellite operations and product lifecycle management.
• Experience with ECSS and CCSDS standards.
• Programming experience in C++ or Java.
• Linux system administration and scripting skills (shell, make, etc.).
• Experience working in Agile/SCRUM environments.

What’s on Offer

• Work with a talented, diverse, and international engineering team on cutting-edge space technologies.
• Flexible and hybrid working options around core hours.
• Optional compressed working pattern (9/75).
• 25 days annual leave (increasing with service) plus bank holidays.
• Private healthcare, life insurance, and long-term sick pay.
• Relocation assistance and visa sponsorship (where applicable).
• State-of-the-art office and cleanroom facilities.
• Regular team and social events in a collaborative, supportive environment.

If you’re an experienced systems engineer ready to take technical ownership of ground segment development for next-generation space missions, we’d love to hear from you.

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