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Join a dynamic team at the forefront of aerospace innovation as an Embedded Software Engineer. You will develop real-time embedded software for spacecraft onboard systems, contributing to exciting space missions and shaping the future of space exploration.

This role offers the chance to work on advanced flight software, collaborating with cross-functional teams to design, validate, and integrate critical systems. You’ll be responsible for defining software requirements, testing in both simulation and real-world environments, and ensuring high-performance software solutions.
 
Key Responsibilities:

• Develop and test flight software for spacecraft.
• Work with multiple teams to identify software needs and solutions.
• Participate in mission system testing and simulation.
• Contribute to the overall success of space missions through software design and integration.

 
What We’re Looking For:

• Strong experience in C/C++ for real-time embedded systems.
• Familiarity with real-time operating systems (VxWorks, RTEMS).
• Proven ability to work with version control systems like Git.
• Experience with developing equipment drivers and interface documentation.
• Ability to independently test and debug software in both simulated and live environments.
• Strong problem-solving skills, and proactive, self-driven work ethic.

 
Desirable Experience:

• Experience with space-related software development.
• Knowledge of industry standards like MISRA, CCSDS, or ECSS.
• Familiarity with Linux systems and Python.

 
What You’ll Get:

• Competitive salary and benefits.
• Flexible and hybrid working options and a supportive environment.
• 9/75 work pattern (optional).
• 25 days holiday (increasing with service), life insurance, and private healthcare.
• Relocation support and visa sponsorship.
• Work with a talented, international team in state-of-the-art facilities.

 
Ready to take your career to new heights? Apply now and be part of groundbreaking space technology!

Systems Group Leader
Role Purpose:
Holt Executive are proud to be partnered with a class leading Defence company who have an exciting opportunity for a Systems Group Leader. As the Systems Group Leader you will play a critical role in overseeing and guiding a team of talented systems engineers. Your leadership, technical expertise and application of systems engineering methodology will drive the successful development, and implementation, of cutting-edge electromechanical systems.  You will ensure that your team adheres to the highest standards of engineering excellence and compliance and engaging in tactical and strategic growth of the team as it evolves to meet business needs.

Key Responsibilities:

• Lead and mentor a team of systems engineers, fostering a collaborative and innovative work environment. Providing technical guidance and support to team members, assisting with complex problem-solving and decision-making.

• Oversee the design, development, and testing of systems and components for defence applications, in line with the project development lifecycle and “V-Model”. Ensuring projects are completed on time and within budget, including project resource allocations, definition of work packages and task management. Proactively assess and manage emerging risks.

• Take a hands-on leadership role in the planning and execution of integration, validation and verification, compliance and commissioning aspects of the products.

• Ensure critical requirements are identified early and flowed through into quantifiable tasks and actions for the project team.

• Collaborate closely with cross-functional teams, including mechanical, software, and electronics and electrical engineers, to ensure seamless integration system components.

• Review, maintain and update and improve working practices associated with systems engineering design and development, including internal documentation.

• Support the sales team with new bid and opportunities, queries and discussions related to systems engineering aspects of products and product development.

• Monitor and evaluate team performance, implementing continuous improvement initiatives to enhance productivity and quality. Engage in staff development to ensure all direct and indirect reports are appropriately supported with 1:1s, mentoring and personal development planning.

• Provide input to engineering team goals and objectives and associated strategic planning.

• Identifying resource needs and lead recruitment activities for the systems team

• Keep the business up to date with latest technological advancements and industry trends, ensuring your team remains at the forefront of innovation.

• Ensure compliance with safety, regulatory, and defence industry standards throughout the development and deployment of systems design activities.

Skills & Experience
Essential

• A degree at 2:1 or above in systems engineering – or a closely related discipline

• Proven expertise and direct relevant experience in a hands-on systems design role and delivery – particularly involving electromechanical systems.

• Experience of successful line management and leadership in an engineering project environment, preferably within the defence industry

• Experience of technical project leadership, following a development lifecycle with a multi-disciplined engineering team.

• Extensive experience in systems engineering across the full product lifecycle – from requirements capture through to after sales logistic support.

• Experience in compliance management and safety management

• Skilled in communication at all organisational levels.

• Demonstrable strong analytical and technical problem-solving experience

• Experience in identifying risks and managing uncertainty.

• Commitment to continuous learning and professional development

Desirable 

• Masters degree in Systems Engineering or closely related discipline.

• 10+ years proven experience of technical team leadership.

• Applications of systems design and the V-model in a defence naval and land environments

• Experience as signatory for compliance and safety cases

• Familiarity with remote sensing payloads e.g. radar and EO.

• Experience of conducting EMC and environmental testing for compliance activities

• Understanding of electro-mechanical control systems

• Involvement in recruitment activities and interviews

• Project planning

• Use of requirements management tools

• Experience of supporting technical sales and bid activities.

Personal Attributes

• Have a flair for innovation, new concept designs and a passion for electrical and electronics engineering.

• Highly organised and methodical approach, with an eye for detail

• The ability to work independently when required.

• A flexible, conscientious, and diligent attitude

• A resilient and adaptable approach

Work life balance:

• 37.5 hour working week.

• Lunchtime finishes on a Friday.

• Hybrid / flexible working arrangements – minimum of 4 days on site presence on average

• 28 days annual leave

• Christmas closure

• Holiday purchase scheme

Holt Executive is proud to be recruiting on behalf of a pioneering space organisation focused on sustainable satellite operations and in-orbit servicing. We are seeking an experienced and driven Payload Systems Engineer to join their growing engineering team in Harwell, UK.

This is an exciting opportunity to work on innovative missions, contributing to the development, integration, and testing of advanced payloads, including cutting-edge technologies like optical sensors, RF systems, and onboard processing units.

Key Responsibilities:

• Define and manage payload system requirements, interfaces, and performance budgets.
• Work closely with multidisciplinary teams to design and develop payload architectures for satellite missions.
• Lead technical trade-offs, analyses, and feasibility studies for payload components and subsystems.
• Oversee integration, verification, and validation of payload hardware and software.
• Collaborate with external suppliers and partners to manage the development and delivery of payload elements.
• Support mission operations teams in preparing for in-orbit commissioning and performance monitoring.

Requirements:

• Bachelor’s or Master’s degree in Aerospace Engineering, Electrical Engineering, Physics, or related discipline.
• Solid experience working on space payload systems, preferably in LEO or GEO missions.
• Strong understanding of electro-optical, RF, or onboard data processing payloads.
• Familiarity with payload interface design, testing, and qualification processes.
• Experience collaborating with hardware and software teams across system-level development cycles.
• Ability to work independently and within a collaborative, cross-functional environment.

Desirable Skills:

• Knowledge of in-orbit servicing, rendezvous and proximity operations (RPO), or satellite inspection missions.
• Experience with tools like MATLAB, STK, or simulation/modeling software.
• Exposure to ECSS or NASA standards for spacecraft systems.
• Previous involvement in mission design, AIT, or payload commissioning.

What’s on Offer:

• Work on meaningful, high-impact missions that support the future of space sustainability.
• Competitive salary and comprehensive benefits package.
• Collaborate with a highly skilled, international team on next-gen space systems.
• Hybrid working model and flexible hours.
• Excellent opportunities for professional development and career growth.

If you’re passionate about solving complex space challenges and building systems that make a difference, this is the opportunity for you. Apply today or reach out to Holt Executive for more details.

IT Infrastructure Architect

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. They are now developing a LEO constellation that will revolutionize global broadband connectivity for enterprise.

Our partner is seeking an IT Infrastructure Architect to oversee the architecture and design of essential IT infrastructure for the constellation, including cloud and data centres. This position will include deliverables, documentation, strategy, and the final design, working cross-functionally across Network and Cloud Engineering.

Key Responsibilities for the IT Infrastructure Architect:

• Define and maintain hardware standards, preferred vendors, and support models across multiple data center environments.
• Participate in project and stakeholder meetings as needed.
• Collaborate with stakeholders to determine resource requirements, project future capacity needs, and provide cost estimations.
• Support data center engineering efforts with rack layout planning, as well as cooling and power modeling.
• Work with architecture teams to design infrastructure solutions that align with established requirements, emphasizing availability and security.
• Create documentation outlining the hardware architecture and supporting infrastructure services, including automation related to Infrastructure as Code (IaC).
• Contribute to the creation of infrastructure build guides and reference materials for the IT Infrastructure.

Key Skills & Experience for the IT Infrastructure Architect:

• A degree in Computer Science, or relevant equivalent experience.
• Over 7 years of hands-on experience with installing, configuring, and operating data center environments, encompassing servers, storage systems, and networking components.
• More than 5 years of experience in building secure, on-premises data center hardware clusters, including network, server, and storage infrastructure.
• At least 5 years of experience in designing, implementing, and managing enterprise-grade networks, including switches, firewalls, and associated monitoring tools.
• Demonstrated expertise in deploying and maintaining cloud-based infrastructure solutions.
• Solid experience working with virtualization platforms such as VMware and KVM.
• Extensive experience in designing, deploying, and maintaining large-scale, highly available, and fault-tolerant network infrastructures.
• Proficient in managing and operating various Linux distributions, including RedHat and Ubuntu, as part of day-to-day operations.
• Deep understanding and hands-on experience with a range of storage platforms and technologies, including related network protocols such as iSCSI and NFS.
• Skilled in implementing and managing dedicated infrastructure services, including DNS and NTP, in secure and isolated environments.
• Strong familiarity with cloud infrastructure solutions, including vendor-specific services and technologies.
• Well-versed in identity and access management (IAM) principles, strategies, and tooling.
• Experienced in using scripting and automation tools such as Bash, Python, Terraform, and Ansible to provision and manage infrastructure.
• Background in designing data center management platforms, including DCIM systems, as well as monitoring and alerting solutions.
• Working knowledge of Kubernetes deployments is a valuable asset.
• Understanding of Site Reliability Engineering (SRE) principles is considered beneficial.

The successful candidate must be able to work in Canada and be able to obtain a Canadian Controlled Goods Program (CGP) Clearance.

This opportunity requires 4 days in the office per week and travel is anticipated.

If your skills and experience match this IT Infrastructure Architect opportunity, we encourage you to apply now!

Mission Assurance Engineer

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. They are now developing a LEO constellation that will revolutionize global broadband connectivity for enterprise.

Our partner is seeking a Senior Mission Assurance Engineer to play a vital role in the development and deployment of mission assurance processes through the entire lifecycle of the program.

Key Responsibilities for the Senior Mission Assurance Engineer:

• Be the main point of contact for the different program segments on mission assurance activities and deliverables.
• Reviewing and approvals of quality plans ensuring they meet contractual requirements.
• Attend and participate in design and manufacturing review meetings, ensuring that quality requirements are being met – covering design, manufacturing, inspection, test, and integration of products and software.
• Oversight of engineering documentation to set quality requirements.
• Non-conformance reviews.
• Responsible for corrective action, and preventative action processes.
• Perform audits, inspections, and assessments internally, and for suppliers.

Key Skills & Experience for the Senior Mission Assurance Engineer:

• A degree in Engineering, Science, or a related field.
• 8+ years of experience within mission assurance, or quality engineering, ideally in the satellite or telecommunications industry.
• Proven experience in failure and anomaly investigation, corrective and preventative action.
• Proven experience in process improvement and implementation.
• Proven experience in undertaking internal and supplier audits and inspections.
• Experience and the ability to assess technical statuses, and issues within hardware, software, and operations.
• Excellent communication skills.

The successful candidate must be able to work in Canada and be able to obtain a 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 Senior Mission Assurance Engineer opportunity, we encourage you to apply now!

Holt Executive are delighted to be partnered with a globally recognised communication and technology leader to support a critical hire within their Field Service / Telecommunication Engineering team.

Our partner provides unrivalled connectivity solutions across several key and critical sectors. This role will specifically support our partners Energy and O&G customers to support their telecommunication requirements using solutions such as VSAT, Fibre optics & LTE systems.

Our partner is looking for someone with solid technical and troubleshooting experience across a telecommunication and SATCOM product portfolio. It is essential for this individual to be driven by customer satisfaction and have complex problem-solving skills.

Key Responsibilities – Telecommunication / Field Service Engineer – VSAT:

• Installation, commissioning & fault diagnostics of VSAT fixed single and dual Antenna Systems
• Commissioning & fault diagnosis of single & multiple carrier services on the above systems related to specific manufacturer Satellite access technologies for SCPC, TDMA, IDirect, newtech & CnC
• Installation and commissioning of LEO VSAT systems such as Avanti
• Installation and commissioning of LTE services in the North Sea
• Installation of P2P/LOS and Fiber Optic WAN services
• Installation, configuration, and commissioning of managed Network Lan infrastructure on site

 Key Experience Required – Telecommunication / Field Service Engineer – VSAT:

• HNCHND Electrical/Electronic/Computer Engineering qualification
• 5 years’ experience in a similar role 
• Seatel, Intellian, Orbit factory training certifications
• GVF Certifications relevant to VSAT
• Approved Fibre training ( splicing and measurement )
• Proven experience of electrical installation & termination
• Proven knowledge of basic LAN network infrastructure hardware, cabling & test
• Proven knowledge of associated test equipment (Spectrum Analyser, RF Power meter, DVM,OTDR, Lan Tester)
• EU or Norwegian citizenship ability to work in Norway (sponsorship not available)

 If your skills and experience match this – Telecommunication / Field Service Engineer – VSAT opportunity, we encourage you to apply by sending your resume to info@holtexecutive.com

Holt Executive has partnered with a leading global connectivity provider, offering services to a global customer base, across maritime, enterprise, defence & government sectors.

Our partner is seeking a Sales Manager – UK Government & Defence who will be responsible for generating new business and managing existing accounts within the UK Government and Defence sectors. This role involves promoting a holistic range of products and solutions, actively seeking new opportunities, and ensuring alignment with future market needs.

Key responsibilities, skills, and experience for the Sales Manager – UK Government & Defence:

• Develop and execute strategies to market and sell products and services to new and existing customers.
• Manage new sales enquiries, coordinating closely with the Group Sales Director.
• Cultivate and maintain strong relationships across all levels with assigned customers.
• Collaborate with the Business Development and Technical Services teams to enhance service delivery and product offerings.
• Provide dedicated sales support to key customers, ensuring timely follow-ups on all sales and service requests to maximize customer retention.
• Prepare accurate quotations in line with company guidelines.
• Maintain a comprehensive awareness of market conditions and customer activities.
• Keep the sales database updated with new leads and quotes.
• Create and update strategic account plans for key customers and territories.
• Prepare sales budgets, forecasts, and detailed reports on market and sales activities as needed.
• Ensure timely issuance and signing of contracts and purchase orders to meet customer delivery timelines.
• Participate in and contribute to market initiatives to enhance customer awareness of offerings and generate new leads.
• Maintain up-to-date knowledge of product portfolio to effectively promote all offerings.
• Engage in additional sales-related initiatives such as exhibitions and seminars as required.

Key requirements for the Sales Manager – UK Government & Defence:

• Eligibility for SC security clearance within the UK.
• Profound knowledge of maritime NAVCOM solutions and a strong commercial awareness.
• Flexibility in work hours and willingness to travel extensively.
• Excellent interpersonal skills and ability to work independently.
• Able to confidently present to engineering teams as well as C-suite executives.

If your qualifications and experience align with this Sales Manager – UK Government & Defence opportunity, we encourage you to submit your CV to info@holtexecutive.com for consideration.

Holt Executive has partnered with a leading satellite communications provider, offering secure voice & data services to a global customer base. They also provide integrated IT & engineering solutions across maritime, enterprise, defence & government sectors.

Our partner is seeking an Telecommunication Billing Manager to manage and oversee the UK monthly billing cycle, including detailed management reporting. This role involves leading the UK Airtime Billing team, handling daily airtime activities, and coordinating with internal and group teams. A strong understanding of products and services as they relate to billing and should be able to produce and analyse airtime reports to support senior management.

As the subject matter expert for NIBS, INSIGHT provisioning, and third-party airtime systems, you will ensure that all billing and provisioning requests are resolved efficiently. Additionally, you will provide support to other airtime teams across the group, ensuring consistency in processes and reporting. This role is crucial for maintaining accurate billing and effective management of airtime processes, contributing to overall operational excellence.

Key responsibilities, skills, and experience for the Telecommunication Billing Manager:

• Oversee and manage information across NIBS and various systems related to order provisioning, customer accounts, billing profiles, and rates.
• Maintain and ensure the accuracy of the airtime billing database (NIBS).
• Process internal and external requests for service activations, deactivations, and package changes, including advising on any Early Termination Fees.
• Understand and manage airtime processes to ensure timely execution.
• Handle monthly billing cycles, including configuring provisioning requests, performing daily or weekly checks for errors, and resolving issues before billing runs.
• Manage invoice processing within the designated timeframe, ensuring accuracy before approval and final issuance to customers.
• Address and resolve queries promptly and extract analytical reports for billing and activation.
• Oversee the Freshdesk ticketing system, ensuring all tickets are managed, categorized, and resolved within SLA.
• Process prepay voucher sales orders, invoices, and voucher deliveries.
• Liaise with customers, suppliers, and internal teams to ensure accurate and timely completion of processes.
• Provide support and training on internal systems and modules to both internal and external teams.
• Approve incoming supplier invoices and coordinate with the finance team.
• Handle complaint escalation and management.
• Participate in the wider banking team to approve invoices according to Delegation of Authority procedures.

If your qualifications and experience align with this Telecommunication Billing Manager opportunity, we encourage you to submit your CV to info@holtexecutive.com for consideration.

Holt Executive is excited to partner with a leading global connectivity provider in the search for an exceptional IT Systems Engineer. This collaboration highlights our shared commitment to delivering innovative solutions and attracting top-tier talent. We are seeking a skilled professional to play a key role in designing, maintaining, and optimizing critical IT systems that support worldwide operations. This partnership reflects Holt Executive’s dedication to connecting forward-thinking companies with outstanding candidates who drive innovation and success.

Shape the Future of IT Systems in Global Connectivity

We are looking for a skilled IT System Engineer to join our dynamic team, where you will play a key role in delivering high-performance IT infrastructure solutions. This is an exciting opportunity to work on cutting-edge systems that enable seamless connectivity across diverse industries.

About the Role:
As an IT System Engineer, you will be responsible for designing, implementing, and maintaining IT systems and networks, ensuring their reliability, security, and scalability. You will collaborate with cross-functional teams to deliver solutions that meet business needs and exceed customer expectations.

Key Responsibilities:

• Design, configure, and maintain IT infrastructure, including servers, networks, and storage systems.
• Monitor system performance and troubleshoot issues to ensure high availability and optimal performance.
• Implement and manage security protocols to protect IT systems and data.
• Support virtualization and cloud-based environments to enhance scalability and flexibility.
• Conduct system upgrades, patches, and backups to maintain robust infrastructure.
• Collaborate with internal teams and external stakeholders to deliver IT solutions that align with project goals.
• Provide technical support and training to users as needed.
• Document system configurations, procedures, and maintenance logs.

Requirements:

• Bachelor’s degree in Computer Science, Information Technology, or related field.
• Proven experience in IT systems engineering, with expertise in server and network administration.
• Strong knowledge of virtualization technologies (e.g., VMware, Hyper-V) and cloud platforms (e.g., AWS, Azure).
• Familiarity with IT security best practices and tools, such as firewalls, antivirus, and encryption.
• Proficiency in Windows and Linux operating systems.
• Strong problem-solving skills and attention to detail.
• Excellent communication and teamwork abilities.
• Ability to manage multiple priorities and work effectively in a fast-paced environment.

Desirable Skills:

• Experience with satellite or telecommunications systems.
• Certifications such as CCNA, MCSE, or AWS Certified Solutions Architect.
• Knowledge of ITIL processes and frameworks.
• Experience with scripting or automation tools (e.g., PowerShell, Bash, Ansible).

What We Offer:

• Competitive salary and benefits package.
• Flexible working options.
• Opportunities for professional development and certifications.
• A collaborative and inclusive work environment.
• The chance to work on impactful projects in a cutting-edge industry.

If you’re ready to take on a challenging and rewarding role in IT systems engineering, we’d love to hear from you.

Apply Now to be part of a team that’s shaping the future of global IT connectivity. We are also a Disability Confident employer.

Holt Executive is excited to partner with a leading global connectivity provider in the search for an exceptional  IT Infrastructure Engineer. This collaboration highlights our shared commitment to delivering innovative solutions and attracting top-tier talent. We are seeking a skilled professional to play a key role in providing day-to-day hands on technical support and management of the internal Corporate and customer-managed IT Infrastructure and projects. This partnership reflects Holt Executive’s dedication to connecting forward-thinking companies with outstanding candidates who drive innovation and success. Be Part of the Future of Global Connectivity

We are seeking a talented and motivated IT Infrastructure Engineer to join a dynamic team working on cutting-edge connectivity solutions. This is a fantastic opportunity to be part of a forward-thinking organization, contributing to the development and maintenance of advanced systems that enable seamless communication across industries worldwide.

About the Role:   The role involves providing hands-on technical support and management of both internal and customer IT infrastructure, ensuring 24/7 service delivery, and acting as an expert on corporate systems and servers, while supporting internal users and remote sites globally   Key Responsibilities:

• Build, maintain, and support physical/virtual environments, network storage, and backup/recovery systems to ensure high service availability.
• Manage and support corporate IT infrastructure for HQ, remote offices, and customers, ensuring seamless operation and integration.
• Ensure server builds and network configurations align with IT security policies and accreditation standards.
• Maintain software compliance for server operating systems, applications, and client licenses, including regular audits.
• Monitor server and service performance to ensure efficient operation.
• Manage email infrastructure, including Exchange, cloud continuity services, SPAM filtering, and mobile device management (MDM).
• Adhere to departmental change control processes and contribute to CCB meetings.
• Build and maintain IT hosting infrastructure, including storage, virtual environments, email, and backups.
• Build and maintain IT security infrastructure, including antivirus, update/patch management, and web filtering.
• Build and maintain telephony equipment and servers, and install telephones on desks.

Requirements:

• HND/Degree in Computer Science or related discipline, or at least 10 years’ experience in a demanding environment with a 100+ user network, including remote sites.
• Extensive experience with virtual environments (VMware).
• In-depth experience with email services, including Microsoft Exchange, Spam Filtering, cloud messaging, and continuity services.
• Strong knowledge of Windows OS administration, Active Directory management, Group Policies, user/group management, and PowerShell.
• Extensive experience maintaining server hardware and storage systems (NAS, SAN).
• Strong understanding of IT security (anti-virus, hard drive encryption, client hardening, authentication).
• Experience in High Availability environments, including clustering and disaster recovery.
• Solid technical knowledge of IP network fundamentals.
• Ability to achieve Direct Vetted Status (DV).

Desirable Skills:

• Linux knowledge an advantage 
• Experience of Blackberry UEM server or Mobile Device Management (MDM). 
• Experience of administering and supporting IP phone systems. 
•  In-depth experience of SNMP monitoring tools. Author: Nigel Quinn Document: IT Infrastructure Support Engineer Page: 4 of 4 Version 1.0 Date of Issue: 
• A sound technical knowledge of any of the following: Endpoint Central, McAfee/Trellix Security, WebMarshal, Veeam, Microsoft SQL Server. 
• Relevant Microsoft qualifications are a strong bonu.

What We Offer:

• Competitive salary and comprehensive benefits package.
• Opportunities for professional development and certifications.
• A collaborative and innovative work environment.
• The chance to work on impactful projects in a fast-evolving industry.

If you’re passionate about technology and eager to play a critical role in delivering innovative connectivity solutions, we’d love to hear from you.   Apply now to join a team dedicated to shaping the future of global communication. We are also a Disability Confident employer.