Senior HR Advisor

Pioneering People; United Kingdom; Remote; GBP 40,000 - 50,000; Part time

Job summary

A growing consultancy in the UK is seeking a Senior HR Advisor for a part-time, remote role. The position involves managing HR operations, ensuring compliance with UK employment law, and enhancing HR systems. Ideal candidates will have strong HR experience and the ability to streamline processes. The company offers a competitive pension plan, private medical healthcare, and various perks including flexible work arrangements.

Benefits

Competitive pension plan

Private medical healthcare

Learning & development opportunities

Flexible working

Electric vehicle scheme

Generous holiday

Life assurance

Team events

Qualifications

• Strong experience in HR operations or generalist roles, ideally in a start-up or scaling business.
• Solid knowledge of UK employment law and HR compliance.
• Confidence working with HR systems.

Responsibilities

• Acting as a first point of contact for employee queries.
• Drafting contracts and managing onboarding and offboarding.
• Coordinating compliance checks and ensuring adherence to UK employment law.

Skills

HR operations experience

UK employment law knowledge

Communication skills

Tools

BambooHR

HiBob

Job description

Senior HR Advisor – Remote (Part-Time, Fixed-Term) | Up to £50,000 (pro-rated for part-time)

Hours: 30 per week, across 4 or 5 days | Contract: 14-month Fixed Term

At TwinStream, we bring technical excellence and exceptional service to our clients across government and industry. Founded in 2019 by engineers passionate about solving complex cross-domain challenges, we’ve grown into a dynamic consultancy where people are at the heart of everything we do.

Our teams work both remotely and on client sites, but we’re united by a culture that values flexibility, collaboration, and continuous improvement.

The Senior HR Advisor opportunity

We’re looking for a Senior HR Advisor to join our growing People team. This is a hands-on, varied role where you’ll be the go-to expert for HR operations, employee lifecycle processes, and compliance.

If you enjoy shaping processes, building HR systems from the ground up, and making a tangible impact in a scaling organisation, this is the role for you.

Why join us?

• Competitive pension plan – 8% employer contribution
• Private medical healthcare – including dental & optical for you and your family
• Learning & development – autonomy to drive your own career growth
• Flexible working – integrate work with life seamlessly
• Electric vehicle scheme – salary sacrifice for sustainability
• Generous holiday – 28 days + bank holidays
• Life assurance & cycle-to-work scheme
• Team events – summer socials, Christmas parties, and quarterly get-togethers

Key responsibilities of the Senior HR Advisor

• Acting as the first point of contact for employee queries, providing expert guidance.
• Drafting contracts, managing changes, and supporting smooth onboarding and offboarding.
• Coordinating compliance checks and ensuring adherence to UK employment law and GDPR.
• Managing and improving HR systems and people data, providing insights to the business.
• Administering employee benefits and supporting cross-functional processes with Finance, IT, and Admin.
• Leading process improvements in HR operations, including sourcing and implementing a new HRIS.
• Partnering with the CPO on people-focused projects to support business growth.

About you

• Strong experience in HR operations or generalist roles, ideally in a start-up or scaling business.
• Solid knowledge of UK employment law and HR compliance.
• Confidence working with HR systems (e.g. BambooHR, HiBob or similar).
• A detail-oriented, process-driven mindset with the ability to streamline workflows.
• Excellent communication skills and discretion when handling sensitive information.

Important to know

Due to the nature of some of our clients, this role is subject to successful completion of a security screening process.

Ready to shape the future of HR at TwinStream?

Apply now and help us build a people experience that truly makes a difference.