Senior Business Analyst

Role Purpose
The Senior Business Analyst provides expert business analysis across products and client projects throughout the end-to-end development lifecycle, ensuring business needs, processes, and requirements are understood, clearly documented, and effectively delivered. Combining hands-on analysis with people leadership, they lead larger and more complex projects independently, set the standard for analysis practice across the wider team, and work with the Product Manager to shape the future direction of the product.
The role includes leading requirements elicitation and analysis, quality-assuring the outputs of the wider analysis team, and guiding both the team and stakeholders to ensure technology solutions meet business objectives and comply with company, industry, and regulatory standards. The Senior Business Analyst may also build the capability of the team through mentoring and coaching, and works across multiple product areas.
Key Responsibilities
Business Improvement & Analysis

• Leads the investigation of business situations to uncover opportunities for efficiency, innovation, or added value, recommending feasible improvements supported by structured analysis and evidence.
• Applies advanced analytical techniques to identify the underlying causes of complex business issues, producing authoritative recommendations that address systemic problems, not just symptoms.
• Evaluates the implications of proposed changes on processes, systems, and stakeholders, providing structured assessments that inform decision-making and risk management at project and programme level.

Stakeholder Engagement & Facilitation

• Engages and influences senior stakeholders to understand needs, expectations, and constraints, building trust by presenting analysis outcomes clearly and resolving concerns and conflicts effectively.
• Plans and facilitates workshops with senior and cross-functional audiences to elicit requirements and analyse business needs, encouraging balanced participation and ensuring outputs are captured effectively.

Requirements Management

• Selects and applies suitable techniques to draw out stakeholder requirements, validating and refining them to ensure clarity, accuracy, and relevance; resolves conflicting needs directly, escalating to the Product Manager only where necessary.
• Produces and quality-assures clear, comprehensive business requirements throughout the project lifecycle, ensuring they are traceable, managed against agreed objectives, and reflect the needs of a diverse client base.
• Refines requirements through structured analysis, validation, and prioritisation, ensuring they are complete, consistent, and aligned with business objectives, and sets the standard for requirements quality across the team.
• Leads stakeholders through the prioritisation of requirements based on value, risk, and business need, documenting and communicating agreed priorities to guide delivery.
• Establishes and maintains traceability of requirements across the lifecycle, providing evidence that solutions meet business needs.

Scope, Process & Business Rules

• Defines and communicates scope boundaries for business analysis work across projects, ensuring stakeholders share a common understanding of what is included and excluded.
• Leads business process mapping, producing and quality-assuring process models at varying levels of detail to support communication, analysis, and decision-making.
• Identifies, documents, and analyses the rules that govern business decisions and processes, ensuring they are consistent, traceable, and aligned with organisational objectives.

User Experience & Acceptance

• Leads the analysis of user interactions, needs, and behaviours to inform solution design, providing structured recommendations to enhance usability and customer satisfaction; directs the production of wireframes alongside developers and UX experts where appropriate.
• Leads stakeholders through user acceptance testing to validate that solutions meet agreed requirements, analysing test outcomes and owning issues and escalations through to resolution.

Delivery Support

• Owns and prioritises backlog items in line with business objectives and delivery plans, ensuring the backlog reflects current priorities and stakeholder input, and coaches others in effective backlog management.

People Leadership (where applicable)

• Holds regular 1:1s focused on development, wellbeing, and career progression.
• Leads performance reviews (mid-year and year-end)using a 360 feedback model, drawing on peer feedback and feedback from line managers and mentors.
• Supports development using tools and resources from Nucleus and personalised learning plans.
• Supports talent calibration discussions and succession planning within their area (annually).
• Manages sickness (recording on Bob, return-to-work) and joiners, movers, and leavers within the team, with support from Group HR.

Skills & Experience Required

• Extensive business analysis experience (typically 6+ years), ideally within financial services or a WealthTech environment.
• Deep working knowledge of business analysis techniques and tools, and their practical application across the full project and business lifecycle.
• Demonstrable experience of leading, mentoring, and developing others, ideally within a business analysis or product team.
• Proven ability to produce and quality-assure clear business requirements and process documentation.
• Experience engaging and influencing senior stakeholders, communicating effectively with audiences of varying technical understanding.
• Previous experience working within a change-focused environment; experience of working within a software development organisation is preferable but not essential.

Personal Attributes

• Remains calm, positive, and decisive under pressure, taking the lead when needed.
• A natural leader who inspires, supports, and develops others, and builds high-performing teams.
• Self-driven, with a genuine commitment to personal and professional growth, both their own and their team’s.
• Enthusiastic, adaptable, and proactive approach to work, with strong organisational skills and the ability to prioritise effectively and meet deadlines.
• Excellent written and verbal communication skills, and a logical approach to problem-solving; displays integrity and awareness of confidentiality, particularly regarding financial data.

Our Values: Smart, Heart, Courage

• Smart – We think with clarity, use good judgment, and continually seek better ways of doing things. We stay informed and strive for excellence.
• Heart – We care about each other and our clients. We act with empathy, foster collaboration, and always aim to do the right thing.
• Courage – We speak up, challenge respectfully, and are open to change. We take ownership and stand by our decisions.

These values guide how we work with one another and with our clients. They shape our culture and underpin every decision we make.
A little about us  
We’re the Nucleus Financial Platforms group and we help make retirement more rewarding.  
People come first - whether it’s our colleagues, or the advisers and customers we support, we know that working in partnership and collaboration leads to the best outcomes. Together, we’ve shaped the platform to how it is today. We work hard, and we celebrate hard too.  
Our ambition is to create a platform with a difference, putting the customer centre stage meant tearing up the rule book and starting from scratch. We’ve come a long way since then, but our mission remains just as focused. That’s why our culture, values, and social responsibility are things we keep at the top of our agenda – because we know they matter and have a big impact.  
Our culture is one of the many things that sets us apart from the pack. We want to have an environment where our people feel that they can make a real difference, know they’ll be rewarded for their efforts and more importantly, enjoy themselves at work.  
Inclusion and diversity at Nucleus  
As with most things in life, who cares, wins. We really care about inclusion.  
For us it’s not a tick box exercise; inclusion and diversity are embedded in our culture and everything we do. It’s a commercial imperative. It isn’t about being PC. It’s about being future-relevant and durable. We owe it to ourselves and the industry to ensure we are playing our part in creating a fair, balanced and transparent financial services sector.  
More diversity means broader experience, a wider set of perspectives and a better collective ability to problem-solve. And it means being more representative of customer groups, which supports areas such as product development.  
At Nucleus, we offer a generous blend of benefits for the things that really matter to our people, including a non-contributory pension, bonus, enhanced parental leave, paid time off for emergencies, health and wellbeing initiatives and flexible working options.