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, weve 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 were united by a culture that values flexibility, collaboration, and continuous improvement.
The Senior HR Advisor opportunity:
Were looking for a Senior HR Advisor to join our growing People team. This is a hands-on, varied role where youll 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.
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