OneAdvanced
Senior Category Manager
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Senior Category Manager
Join OneAdvanced
This is a high-impact opportunity to take full ownership of key procurement categories across HR and Professional Services, partnering closely with senior stakeholders to drive strategic value across the business.
If you thrive in a fast-paced environment and want to play a visible, influential role in shaping a growing function, this is your chance to make a lasting impact.
This is a hybrid role, with an expectation of 2–3 days per week in our Birmingham office, in the Mailbox.
What You Will Do
- Own and deliver category strategies across HR and Professional Services, driving commercial value and efficiency
- Lead end-to-end sourcing activity, including negotiation of complex commercial and contractual agreements
- Manage supplier selection, onboarding, due diligence, and ongoing performance
- Partner with stakeholders across HR, Finance, Legal and Professional Services to influence decision-making and embed procurement best practice
- Support the delivery of cost-savings targets while balancing risk, quality, and business needs
- Manage supplier contracts and scope to ensure strong commercial outcomes and prevent scope creep on delivery projects
- Contribute to the development of procurement processes, tools, and policy as the function continues to mature
- Drive a more proactive, data-led approach to procurement across the organisation
- Support key strategic initiatives, including technology implementations and outsourced service delivery
What You Will Have
- Strong experience in strategic supplier procurement
- Proven track record of leading complex contract negotiations, including commercial and contractual terms
- Experience across Professional Services and/or IT services procurement (e.g., implementation partners, consulting, SaaS)
- Ability to independently manage supplier agreements, working closely with Legal where required
- Strong stakeholder management skills, with the ability to influence and challenge at senior levels
- Commercially astute, with a clear understanding of cost drivers, risk, and value creation
- Experience operating in fast-paced or evolving environments, with the ability to manage ambiguity and competing priorities
- Resilience, pragmatism, and a delivery-focused mindset
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What We Do For You
Wellbeing That Means Something
- 26 days’ holiday + bank holidays (with the option to buy more)
- 1 paid volunteering day every year
Exceptional Family Leave
- 26 weeks fully paid maternity/adoption
- 4 weeks fully paid paternity
- 22 weeks fully paid shared parental leave
- 5 days paid bereavement leave
Robust Support
- Robust sick pay of up to 13 weeks full pay + 13 weeks half pay
- 24/7 Employee Assistance Programme for confidential support
- Private medical insurance for everyone, with no medical-history exclusions
Financial Benefits
- Performance-based rewards tailored to your role, including bonuses, OTE (On Target Earnings), and commission structures
- Income protection: up to 75% salary for 5 years if needed
Career Growth
- Access to a SkillsHub learning platform featuring leadership pathways, future-manager training, and a huge online library
- Support for external training and apprenticeships
Making a Difference
- MatchIt! Fundraise for a cause close to your heart; OneAdvanced will match part of the funding
- Pennies from Heaven: Donate the pennies from your paycheck to help make a difference without lifting a finger
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Flexible Benefits (via RewardHub)
- ULEV car scheme with 1,000+ models
- Dental insurance
- Health Cash Plan
- Critical Illness Cover
- Partner Life Cover
Who We Are
At OneAdvanced, we are at the forefront of delivering sector-focused technology solutions that simplification complexity, drive meaningful progress, and help build a fairer, more inclusive society.
We’re much more than a software company:
- Deliver SaaS workflow applications and IT services, powering organizations across Education, Government, Healthcare, Legal, Manufacturing, Housing, Retail, and more.
- One of the UK’s largest business software and services companies.
- Based in Birmingham, The Mailbox, operating across the UK, Ireland, India, and Australia.
- Our secure, scalable platform, especially OneAdvanced AI, our private AI service for UK organisations, powers connectivity and innovation across critical sectors, alongside our IT services, including hosting, managed services, and application modernization.
Guided by our Environmental, Social and Governance (ESG) strategy, we champion innovation and collaboration, driving meaningful impact for our people, customers, and the planet.
Proud to be recognized in the Financial Times’ Best Employers 2026 list for the second-year running, based on employee feedback. Join us and become part of a team that’s powering the world of work and making a real difference.
Learn more at www.oneadvanced.com
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