Senior Certinia Solutions Specialist

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We are seeking a Senior Solutions Specialist with deep functional expertise in Certinia, particularly in Finance and Operations. The ideal candidate will have experience across multiple implementations and the ability to collaborate effectively with business and technical teams to deliver scalable, efficient solutions. As the techno‑functional lead, you will drive the evolution, integration, and management of Certinia ERP and PSA within Oliver Wyman.

This role encompasses solution architecture, technical support, application administration, stakeholder engagement, and team leadership, bridging business, finance, and technology to optimise our cloud‑based service operations.

Remote work is an option for this role.

• Collaborate with business, finance, and technical teams to assess requirements, estimate complexity, and translate business needs into clear user stories and acceptance criteria.
• Design end‑to‑end solutions using Certinia capabilities, leading fit‑gap analysis and advising on functionality, costs, and risks.
• Define and oversee custom architectures including API and data integrations, guiding development and troubleshooting to ensure high‑quality delivery.
• Serve as the subject‑matter expert on Certinia applications for Finance, monitoring performance, troubleshooting, and implementing system enhancements.
• Act as liaison between stakeholders, driving continuous improvement, spearheading UAT and change management, and fostering adoption through training and documentation.
• Provide advanced technical support and maintain comprehensive documentation while ensuring compliance with IT controls and security policies.

• Degree in Computer Science or a related field.
• 3‑4 years of experience with Certinia PSA or Accounting (ERP) solutions.
• Proven expertise in accounting processes including Time Entry, Revenue Recognition, WIP, and backlog reporting.
• Full professional proficiency in written and spoken English.
• Experience partnering with business stakeholders and delivering technical solutions in Agile (Scrum/SAFe) environments.
• Familiarity with project management and delivery tools such as Service Now, Jira, or Azure Dev Ops.

• Deep knowledge of Certinia ERP/PSA modules including project accounting, resource management, financials, time/expense, billing, multi‑currency, and project economics.
• Strong analytical, diagnostic, and troubleshooting skills with high attention to detail and organisation.
• Ability to communicate complex technical concepts clearly to non‑technical stakeholders.
• Collaborative team player with experience coaching or mentoring admin or analyst teams and working with external partners/vendors.
• Proactive, self‑motivated, accountable, and able to manage multiple priorities effectively.
• Neutral, solution‑oriented technical mindset focused on business outcomes rather than vendor or platform preferences.

• We help you be your best through professional development opportunities, interesting work and supportive leaders.
• We foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have impact for colleagues, clients and communities.
• Our scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well‑being.

Marsh McLennan (NYSE: MMC) is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses:
Marsh, Guy Carpenter, Mercer and Oliver Wyman. With annual revenue of $24 billion and more than 90 000 colleagues, Marsh McLennan helps build the confidence to thrive through the power of perspective. For more information, visit , or follow on Linked In and X.

Marsh McLennan is committed to embracing a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age background, disability, ethnic origin, family duties, gender orientation or expression, marital status, nationality, parental status,…