Senior HR Business Partner in Denham

At Martin-Baker, we are global leaders in ejection seats and crashworthy systems—our work quite literally saves lives. We are now seeking a Senior HR Business Partner to play a pivotal role in shaping our people strategy and operational excellence across the business. This is a high-impact role combining strategic HR business partnering with ownership of HR systems, administration, and process optimisation.

Acting as a trusted partner to multiple senior stakeholders across diverse business areas, you’ll also lead central HR services—ensuring our processes, systems, and employee experience are robust, efficient, and fit for a workforce of over 1,300 employees.

• Partner with Senior stakeholders across sourcing, commercial finance, IT, and manufacturing to provide expert HR guidance and support.
• Lead and develop the central HR administration and onboarding team (3 direct reports).
• Oversee and optimise various HR systems with a focus on integration and efficiency improvements.
• Develop, implement, and continuously improve HR processes and procedures to support organisational growth.
• Manage the full employee lifecycle, from recruitment handover through to exit, including onboarding, promotions, family leave, and offboarding.
• Build KPI dashboards and reporting tools to provide insight and support data-driven decision-making.
• Identify and implement opportunities to streamline processes and expand manager self-service capabilities.
• Develop a clear roadmap for HR systems integration and future capability, supporting business transformation.
• Ensure HR policies and practices remain compliant, consistent, and aligned with employment law.

We are looking for a hands-on and forward-thinking HR professional who brings strong operational expertise alongside the ability to influence at senior level. You’ll be equally comfortable rolling up your sleeves and delivering improvements, as you are partnering with senior stakeholders.

• Strong background in HR administration or operations.
• Experience managing teams within HR or administrative functions.
• Proven experience working with or implementing HR systems and driving system improvements.
• Experience delivering change initiatives and improving processes.
• Sound knowledge of UK employment law and regulatory frameworks.
• Strong systems thinking and a passion for process optimisation.
• Ability to develop and deliver a systems and process roadmap.
• Strong stakeholder management and listening skills.
• Practical, hands-on approach with the ability to operate effectively without large support functions.
• Ability to balance a relationship-driven culture with process discipline and structure.
• HR business partnering experience.
• Experience building dashboards and KPI reporting.
• Experience working in manufacturing or non-desk-based environments.

At Martin-Baker, your work contributes to saving lives around the world. You’ll join a business with a strong family-oriented culture, where people and relationships are truly valued—while playing a key role in bringing structure, efficiency, and modernisation to our HR function.

• Friday Finish – early finish at 12:15pm every Friday.
• 25 days holiday + bank holidays (with option to buy more).
• Healthcare cash plan and life assurance.
• Opportunity to shape and modernise HR systems and processes across a global organisation.
• Career progression into a broader, strategic HR leadership role.

Initial telephone interview with your Recruitment Business Partner. First stage interview with the Hiring Manager and a HR stakeholder. Final stage interview with Group Vice President of HR and key business stakeholder.

Ready to make a real impact and help shape the future of HR at a world-leading organisation? Please note this position is subject to UK Government BPSS security clearance, and applicants must have an existing right to work in the UK. The role also involves access to information governed by U.S. Export Control Laws (including ITAR); therefore, all applicants must satisfy ITAR eligibility requirements.