Pension System Analyst and Subject Matter Expert in Portsmouth

Dunstan Thomas delivers innovative software solutions to the Financial Services industry. We are seeking a talented individual to join the Imago Administration team as a Pension Systems Analyst and Subject Matter Expert. Imago Administration is a market‑leading pensions platform used across the SIPP and SSAS sectors and supported by an ambitious, forward‑looking product roadmap.

In this role, you will collaborate closely with Business Analysts, Developers, and Testers in an agile environment, contributing throughout the end‑to‑end development lifecycle. With the regulatory landscape continually evolving, we are looking for someone who is proactive, adaptable, and keen to help shape the future direction of our products while supporting our existing client solutions.

Responsibilities

• Act as a pensions subject matter expert, providing insight and guidance on complex issues.
• Stay informed of relevant regulatory developments and ensure requirements are incorporated effectively.
• Provide people leadership aligned to our values, supporting and developing team members.
• Offer operational and technical pensions expertise to project teams (Business Analysts, Developers, Testers) to help define, deliver, and validate requirements.
• Produce clear, comprehensive business requirements that reflect the needs of our diverse client base.
• Deliver systems training to both external pension providers and internal teams.
• Support business process mapping activities to ensure clarity and alignment across workflows.
• Assist in issue investigation and resolution, including direct client support where required.
• Maintain and enhance user guides, process documentation, and training materials, helping to build and strengthen a central knowledge repository.
• Participate in system testing activities and contribute to the ongoing evolution of the product roadmap.
• Engage with customers to understand needs and translate them into formal software change documentation.
• Work with Product Owners and Project Managers to define and refine functional requirements.
• Collaborate with development and testing teams to ensure that functional changes meet business objectives and leverage core product capabilities.

Skills, abilities and personal qualities

• Ability to remain calm, positive, and decisive under pressure, taking the lead when needed.
• Self‑driven attitude toward personal and professional growth.
• Enthusiastic, adaptable, and proactive approach to work.
• Strong organisational skills with the ability to prioritise effectively and meet deadlines.
• Excellent written and verbal communication skills.
• Logical thinker with strong problem‑solving abilities.
• Minimum of 5 years' Defined Contribution pensions experience, ideally within a SIPP/SSAS environment.
• Previous experience working within a change‑focused environment.

Location

Flexible working, with the ability to attend the Portsmouth office once per week.

A little about us

Our purpose at Nucleus is to transform financial services and create better outcomes for our advisers and their clients. It is this purpose that drives everything we do. Whether you are working in a role that is client facing or not, you’ll need to be service obsessed to work here. It’s a fast paced and exciting environment, and one where we believe you will get the chance to fulfil your potential and do work that really matters, to you and our clients. We believe in you having your own chunk of responsibility and being trusted to make things happen.

Nucleus’ culture is something our people believe sets us apart from other places they’ve worked. We think big, know our stuff and move at pace, but always empowering others along the way and breaking new ground to find better ways of doing things. We know that sometimes the right choice is not the easy one, so empowering each other and celebrating others' successes, as well as our own, is part of what makes us Nucleus #WeAreNucleus.

Inclusion and diversity at Nucleus

As with most things in life, who cares, wins. We really care about inclusion. For us this is not a box-ticking thing, it’s a commercial imperative. It isn’t about being PC. It’s about being future relevant and durable.

We’re proud to partner Stonewall and be a diversity champion for Scotland. This partnership demonstrates our ongoing commitment to diversity by providing an environment where everyone feels welcome, able to be their authentic self and do the best work of their life.

We offer a generous blend of benefits for the things that really matter to our people, including pension, bonus, enhanced parental leave, paid time off for emergencies, health and wellbeing initiatives and flexible working options.