HR Advisor / Senior HR Advisor

CWA: Civil Works Alliance; Ipswich; On-site; GBP 50,000 - 70,000; Full time

Job summary

Civil Works Alliance is seeking an experienced HR Advisor/Senior HR Advisor to support the HR Business Partner in driving organisational effectiveness across the Sizewell C programme. You will help shape the people strategy for head office and support functions, and contribute to building scalable structures and clear career pathways for a major infrastructure project.

Ideal candidates will have CIPD Level 5 or above and experience in large-scale programmes, with strong HR operations skills,

Qualifications

• CIPD Level 5 or above or substantial equivalent experience.
• Experience in major infrastructure projects or programmes.
• Exposure to construction, engineering, or infrastructure sectors.

Responsibilities

• Act as trusted Senior HR Advisor supporting HRBP with organisational effectiveness and performance.
• Support people strategy and long-term goals for head office and support functions.
• Contribute to a once-in-a-generation project with HR solutions.
• Provide HR guidance on organisational design, workforce planning, and employee relations.
• Design scalable team structures and clear career pathways aligned with programme delivery.
• Support annual workforce planning with a rolling three-year plan.
• Oversee onboarding, offboarding, payroll, HRIS updates and compliance.
• Develop and execute people strategy aligned with organisational goals.
• Use HR data to identify trends and inform decision-making.
• Collaborate with functions on talent acquisition and succession planning.
• Ensure high-quality, efficient HR service.

Skills

Strategic HR

HR operations

People analytics

Stakeholder management

Education

CIPD Level 5 or above

Tools

Office 365

HRIS

Payroll systems

Job description

HR Advisor / Senior HR Advisor Opportunity with the Civil Works Alliance (CWA), Supporting Sizewell C

As part of the CWA (Civil Works Alliance), you will support the building of Sizewell C. Sizewell C will be a 3.2-gigawatt power station generating low-carbon electricity for around 6 million homes and will play a key role in our energy future, supplying reliable, clean electricity for at least 60 years. This role will be within the CWA Wide Section.

What will you do?

• In this pivotal role, you will act as a trusted Senior HR Advisor supporting the HR Business Partner with, driving organisational effectiveness and enabling performance across the programme.
• You will support the HR BP with the people strategy and long-term goals, specifically supporting the head office and support functions.
• This is an exciting opportunity to contribute to a once-in-a-generation project while developing your HR expertise.
• Partner with HRBP to provide HR guidance on organisational design, workforce planning, employee relations, and performance management.
• Support organisational growth by designing scalable team structures, clarifying roles, and embedding career pathways that align with programme delivery.
• Support the annual resource planning process, maintaining a rolling three-year workforce plan that adapts to evolving project priorities.
• Oversee the delivery of core HR operations, including onboarding, offboarding, payroll, HRIS updates, and compliance requirements.
• Support the development and execution of the people strategy, ensuring alignment with organisational goals.
• Leverage HR data and analytics to provide actionable insights, identify trends, and support evidence-based decision-making.
• Collaborate with functions to support talent acquisition plans and succession planning, addressing current and future capability needs.
• Ensure high-quality, efficient HR service.

We are seeking a strategic and hands-on HR professional who thrives in complex, high-pressure environments. The ideal candidate will be a collaborative partner, adept at navigating the unique challenges of a major infrastructure project while driving people-focused solutions.

A proven ability to build collaborative relationships across teams, functions, and stakeholders.

Ability to navigate complex projects.

Experience in HR operations.

Proficiency in digital HR tools and platforms, including Office 365 and HR information systems.

A commitment to fostering an inclusive and high-performing culture, aligned with the CWAs core values: Humility, Positivity, Respect, Solidarity, and Clarity.

Desirable

• Chartered or equivalent HR qualification (CIPD Level 5 or above) or substantial equivalent experience.
• Experience within major projects or programmes, particularly in multi-stakeholder environments.
• Exposure to the construction, engineering, or infrastructure sectors, with an understanding of workforce and compliance requirements.

The CWA is a single delivery organisation made of up of the client (Sizewell C) and three parent companies - Balfour Beatty, Bouygues and Laing O'Rourke - which offer industry leading packages including market leading salaries, generous annual leave entitlements, pension scheme and other flexible benefits.