HR Manager - UK in Westminster

About Us

At Medius, we believe managing finance should be about strategy, not stress. That same mindset shapes not only the solutions we build, but also the culture we create for our people. We remove complexity, embrace innovation, and give our teams the freedom to focus on what truly matters — whether that’s transforming the future of finance with AI or finding balance to go home on time.

Founded in Sweden in 2001, Medius has grown from a local startup into a global leader in cloud-based spend management solutions. Today, thousands of organizations worldwide trust us to simplify accounts payable and spend management processes. Our journey has been driven by continuous innovation, a passion for technology, and above all — the people who make it happen.

We’re more than a software company. We’re a team of problem-solvers, innovators and collaborators working together to reinvent the category of accounts payable. Our solutions use Artificial Intelligence to eliminate manual work, bring clarity, confidence, and control, and empower finance teams of the future.

Values

• Connect – We believe in the power of people—individually and collectively—and our success depends on understanding and respecting each other.
• Question – We enjoy the challenge of our work and the thrill of collaboration. We are not afraid to question ourselves and each other because we believe diverse perspectives can lead to better outcomes.
• Own – We are thorough, thoughtful, and decisive. We anticipate what’s next, what a customer might need, and then we deliver.

At Medius, you’ll join a diverse, global community where curiosity is celebrated, ideas matter, and innovation never stops. If you’re passionate about technology, eager to make an impact, and ready to grow alongside a team that lives its values, Medius is where you can do your best work — your impact is global.

Job overview

We are seeking an experienced HR Manager to lead and manage end-to-end HR operations for our UK, Ireland & Netherlands employee population, while also providing HR & ER support as required for other geographic locations across EMEA & North America. This role combines hands‐on HR generalist ownership with operational excellence, systems rigor, and policy governance. The HR Manager will act as the primary HR SME for the UK, ensuring compliance, consistency, and a high‐quality employee experience, while partnering closely with global HR, Payroll, Compensation, and Operations teams to scale and strengthen people processes across regions.

The ideal candidate brings deep knowledge of UK employment law, proven experience supporting UK HR environments, and the ability to operate confidently across both strategic and operational work.

Responsibilities and Duties

• UK HR Ownership
  • Serve as the primary owner and SME for all UK HR processes, ensuring compliance with UK employment law and regulatory requirements.
  • Provide clear, practical guidance to managers and employees on HR policies, procedures, and best practices.
  • Maintain and continuously update UK HR policies and handbook content in line with legislative changes and company standards.
  • Monitor employment law developments and proactively recommend updates to policies, processes, and practices.
  • Identify operational risk in employment practices, payroll handling, and data privacy.
• Employee Lifecycle Management
  • Lead and oversee UK onboarding and offboarding processes, ensuring a smooth, compliant, and positive employee experience.
  • Lead work authorization, right‐to‐work checks, and audit readiness.
  • Coordinate closely with Payroll, Benefits, IT, and Finance to ensure seamless employee transitions.
  • Support employees with work authorization requirements, and manage relevant periodic audits.
  • Establish service delivery standards, workflows, and SLAs across geographically owned locations.
• Payroll, Benefits & Vendor Management
  • Partner with global payroll stakeholders to review and validate UK payroll for accuracy and compliance.
  • Manage benefits administration across regions, serving as a point of escalation for complex employee inquiries.
  • Ensure accurate HR data flow between HR systems, payroll, and benefits platforms.
• HR Systems & Operational Excellence
  • Own the integrity and day‐to‐day administration of the HRIS (HiBob), partnering with HR Business Partners to ensure accurate data, strong functionality, and consistent processes.
  • Establish and maintain regular audit cadences for HR systems, employee records, and payroll inputs.
  • Identify, troubleshoot, and resolve HR process or system inefficiencies, implementing scalable and well‐documented improvements.
  • Deliver actionable workforce insights and operational reporting to support data‐driven decision‐making.
• Policy Development & Governance
  • Conduct regular audits of HR policies to ensure relevance, compliance, and alignment with company values.
  • Identify gaps or opportunities for new or enhanced policies in collaboration with HR leadership and Legal.
  • Maintain a centralized, accessible library of HR policies, procedures, and templates driving self‐service where reasonable.
• Employee Relations & Manager Support
  • Serve as the first point of escalation for UK employee relations matters, ensuring fair, consistent, and compliant outcomes.
  • Coach and advise managers on performance management, employee development, and sensitive people matters.
  • Support investigations, disciplinary processes, and terminations in partnership with HR leadership and Legal.
  • Provide Employee Relations case management data to Functional HR Business Partners and work in partnership to identify opportunities to reduce future cases.
• HR Projects & Global Collaboration
  • Where relevant, lead and contribute to HR initiatives aligned with global priorities, including engagement programmes, compensation cycles, and process standardisation.
  • Partner with HR colleagues across regions to ensure alignment while addressing local market needs.
  • Build local geographical processes that are scale‐ready to drive efficiency globally.
  • Support Environmental, Social, and Governance (ESG), compliance, and audit‐related requests in collaboration with cross‐functional stakeholders.
• Global HR Support & Partnership
  • Act as a key partner supporting HR Operations in the wider EMEA market and North America as required.
  • Provide guidance and operational support across onboarding, off‐boarding, payroll, benefits, and employee relations processes in other global markets as required.
  • Partner with global HR stakeholders and external providers to ensure accuracy, consistency, and compliance.

Qualifications

• Bachelor's degree in Human Resources, Business Administration, or a related field (preferred).
• 5+ years of progressive HR experience with strong depth in UK HR operations and employment law.
• Demonstrated experience supporting global HR teams and employment markets including but not limited to North America & EMEA.
• Experience in other EMEA & North America geographies, such as the Netherlands, USA & Canada or other Medius regions would be beneficial.
• Hands‐on experience with payroll and benefits administration.
• Strong HRIS experience with a focus on data integrity, audits, and process optimisation with HR systems including but not limited to HiBob, Deel, etc.
• Ability to work independently while collaborating effectively with global stakeholders.
• HR certification (CIPD, PHR/SPHR, SHRM‐CP/SHRM‐SCP, or equivalent) is desirable but not required.

Medius is committed to fair and equitable compensation practices. Actual compensation will be determined based on several factors, including but not limited to relevant skills, experience, qualifications, certifications, internal equity, and the geographic location in which the role is performed. Compensation may vary for roles performed in different locations due to differences in the cost of labour.

The total compensation package for this position may also include eligibility for variable compensation (such as a performance bonus or commission), benefits, and/or participation in other incentive or benefit plans, in accordance with the terms of the applicable plans. Benefits may include medical, dental, and vision coverage, paid time off, and retirement benefits, subject to eligibility requirements.

Medius is an equal opportunity employer. We are committed to providing equal employment opportunities to all qualified applicants and employees, without regard to race, colour, religion, sex (including pregnancy, sexual orientation, and gender identity or expression), national origin, ancestry, age, disability (physical or mental), genetic information, medical condition, marital status, citizenship or immigration status, military or veteran status, or any other characteristic protected by applicable federal, state, or local laws.

If you require a reasonable accommodation due to a disability or for religious reasons during the application or interview process, please review our accommodations process.