Job Description

Role: Business Systems Analyst
Location: London, 2 days per week on site required
Duration: 6-month contract, temp to perm possibility
Rate: 650.00 - 700.00 via umbrella company
Are you a systems-savvy Business Analyst with a passion for APIs, complex integrations, and shaping the future of digital payments and financial systems? We're looking for a dynamic Senior IT Business Analyst to join an innovative, globally recognised financial technology powerhouse that is driving transformation across the payments landscape.
Why Join This Organisation?
This company is a leader in global commerce-enabling technology, trusted by some of the world's largest financial institutions and merchants. Their collaborative, forward-thinking culture empowers teams to solve real-world challenges with cutting-edge solutions. You'll be working on high-impact projects that sit at the heart of the financial services industry-transforming systems, integrating new platforms, and enhancing customer experiences at scale.
What You'll Be Doing
As a Senior Business Analyst, you will play a pivotal role in bridging business needs and technology solutions-particularly where API integrations and complex system interactions are involved. You'll work cross-functionally with business stakeholders, developers, and product owners to define, validate, and deliver solutions that align with regulatory standards and business strategy.
Key responsibilities include:

• Gathering and analysing detailed business and systems requirements, particularly for API-based integrations.

• Translating business needs into functional and technical specifications that support complex enterprise systems.

• Collaborating closely with software engineers and architecture teams to shape end-to-end solutions.

• Mapping how systems interact across business functions, with an emphasis on efficient, secure data exchange.

• Leading impact assessments, cost/benefit analysis, and re-engineering of business processes for greater performance and compliance.

• Writing and executing test plans (integration, system, and UAT), ensuring solution integrity and business alignment.

• Supporting Agile ceremonies and backlogs (SAFe Agile, Jira/Rally).

• Championing best practices across solution design, documentation, and user training.

What We're Looking For
To succeed in this role, you should bring a balance of technical systems knowledge, particularly around APIs, and strong stakeholder communication skills.
You will need:

• Proven experience as a Business Analyst or Systems Analyst in a financial services, payments, or fintech environment.

• Strong knowledge of API-based systems (REST, JSON, XML) and how to document and validate API requirements.

• Familiarity with tools like Postman, Swagger/OpenAPI, or similar for API analysis and testing.

• Experience working with Agile methodologies (SAFe preferred) and tools like Jira or Rally.

• Knowledge of systems development life cycles (waterfall, Agile, hybrid).

• Solid understanding of the regulatory/compliance landscape in financial services.

• Strong analytical and communication skills, with the ability to distil technical complexity into business language.

What You Bring

• A degree in Computer Science, Information Systems or a related field-or equivalent professional experience.

• Confidence in engaging both business and technical stakeholders, and the ability to influence at all levels.

• A proactive mindset-curious, collaborative, and eager to find smarter ways of working.

Ready to Join?
If you're passionate about the intersection of business analysis, systems thinking, and API integration-and want to be part of a highly respected financial technology leader-apply today to shape the future of connected commerce.
Candidates will ideally show evidence of the above in their CV to be considered please click the "apply" button.
Please be advised if you haven't heard from us within 48 hours then unfortunately your application has not been successful on this occasion, we may however keep your details on file for any suitable future vacancies and contact you accordingly.
Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.