About Submer

Submer enables organizations scaling AI to overcome the limits of traditional datacenters across power, compute density and efficiency.

We design and deliver scalable, high-density AI datacenter infrastructure built around industry-leading liquid cooling, supporting everything from early AI deployments to full-scale production environments.

Acting as a full-stack delivery partner, Submer provides advisory, design, build and IT integration through a single point of accountability, working with a deep ecosystem of technology specialists. This end-to-end approach accelerates time-to-AI while reducing operational cost, complexity and environmental impact.

The result is AI infrastructure that performs today, scales predictably and avoids the redesigns and inefficiencies slowing the market down.

What impact you'll have

What you'll do

Key Responsibilities

• Own and lead end-to-end HR operations for the D&B business unit across the UK and international project locations

• Ensure consistent, efficient delivery of all employee lifecycle processes (onboarding, mobility, changes, offboarding)

• Act as the primary HR operations lead for D&B, ensuring alignment with global HR frameworks

Workforce Management & Deployment

• Oversee workforce tracking, allocation, and deployment across projects and geographies

• Ensure accurate visibility of headcount, roles, and project assignments

• Support workforce planning processes by providing operational insight and data accuracy

• Coordinate contract management, including project-based assignments and international mobility

Payroll, Compliance & Risk Management

• Own payroll coordination in the UK collaborating at the group level, and oversee inputs for international payroll across project teams

• Ensure compliance with UK employment law and manage cross-border employment requirements

• Partner with Legal on employment contracts, mobility frameworks, and risk mitigation

• Maintain strong governance, controls, and audit-ready documentation across all HR operations

HR Compliance & Labour Relations (UK & International)

• Act as the point of accountability for HR compliance within the UK, ensuring adherence to employment legislation, regulatory requirements, and internal policies

• Support and manage labour relations matters where applicable, including employee relations cases, consultations.

• Provide guidance to the business on labour law considerations and risks across different countries, partnering closely with Legal and external advisors where required

• Ensure consistent and compliant approaches to restructuring, mobility, and workforce changes across jurisdictions

HR Systems, Data & Workforce Analytics

• Own HRIS data integrity ensuring alignment with business units, projects, and cost structures

• Deliver accurate and timely reporting across key metrics: headcount, workforce allocation, cost, attrition

• Partner closely with Finance to align workforce data with payroll, budgeting, and project cost tracking

Process Design, Standardization & Scaling

• Design and implement scalable HR operational processes suited to a Design & Build environment

• Standardize onboarding, mobility, and workforce deployment processes globally

• Identify inefficiencies and drive continuous improvement across HR operations

• Support the rollout and adoption of global HR systems, tools, and operating models

Cross-functional Leadership

• Partner with D&B leadership to support workforce execution and project delivery needs

• Work closely with Finance on payroll accuracy, cost allocation, and workforce reporting

• Collaborate with Legal on compliance, contracts, and international employment structures

• Support Talent Acquisition with onboarding and integration of new hires into project teams

What you'll need

Experience & Skills

• 8–12+ years of experience in HR Operations / People Operations

• Strong expertise in UK employment law, payroll, and HR compliance

• Experience managing employee relations and labour relations processes

• Experience in project-based, engineering, construction, or infrastructure environments

• Strong HRIS and systems experience (HiBob or similar) with a data-driven mindset

• High attention to detail and strong operational discipline

• Ability to manage complexity across geographies, projects, and stakeholders

• Strong stakeholder management skills, particularly with operational and technical teams

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• Experience in data center, construction, engineering, or infrastructure sectors

• Exposure to global payroll providers and EOR models

• Experience supporting workforce mobility and international project deployments

• Familiarity with aligning HR data to finance/ERP systems and project cost structures

What we offer

• Attractive compensation package reflecting your expertise and experience.

• Private Health Insurance and pension contribution

• You’ll be joining a high-growth start-up environment where you can make a tangible impact from day one, helping shape the business as it scales and seeing firsthand the results of your contributions.

Our job titles may span more than one job level. The actual base pay is dependent on a number of factors, such as transferable skills, work experience, business needs and market demands.

Our Inclusive Responsibility

The Submer Group is committed to creating a diverse and inclusive environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other protected category under applicable law.

Department

Human Resources

Role

HR Operations Director - Design, Build & Operate Business Unit

Locations

London (On-site)

Remote status

Hybrid

Employment type

Full-time