Senior Technical Business Analyst (Contractors Outside IR35) - FINTECH / LONDON

At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology.

Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage.

Our clients include the world's leading investment banks, investment managers, fintechs and capital market service providers.

With a global reach with offices in London, New York, Manila, Barcelona and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions.

We are now looking for Technical Business Analyst services on an exciting project!

• Experience in QA, Software Engineering (ideally a senior Java developer), Technical Business Analysis, or another highly technical product environment
• The ability to see the big picture while managing the finer details of delivery.
• The ability to communicate and facilitate effectively across both technical and business stakeholder groups.
• The ability to bring structure and clarity to ambiguous or complex delivery situations.
• The ability to understand system behaviour and interactions beyond purely functional outcomes.
• A strong technical and domain-driven mindset, with the ability to work closely with engineering teams
• Hands-on experience with high-performance messaging or sequencing platforms such as Aeron, Kafka, Hydra, or equivalent — including an understanding of message ordering, state machine replication, and fault-tolerant distributed systems
• Demonstrable exposure to low-latency or high-throughput messaging infrastructure in a financial or similarly demanding technical environment
• A product-first mindset, combining Domain-Driven Design principles with a deep understanding of systems and user impact
• The ability to define and document functional and non-functional requirements clearly and effectively
• An understanding of performance, scalability, resilience, and availability in modern platforms
• Experience working in Agile or Kanban environments across the full software development lifecycle
• Demonstrable experience contributing to architecture and design discussions, simplifying complex challenges into deliverable solutions
• The ability to create process flows, sequencing diagrams, and documentation that align technical and operational teams

• Shaping requirements and driving alignment in ambiguous situations, with minimal direction
• Adapting to different delivery models across products, including engineering-led and BA-led ways of working
• Define and maintain functional and non-functional requirements — including operational scenarios, acceptance criteria, and QA validation needs across distributed workflows
• Ensuring questions are raised early, so that solutions are well understood, well defined, and ready to be delivered

• Collaborate with engineering, QA, and architecture teams to translate complex technical solutions into structured backlog items, deliverable stories, and testable outcomes
• Help stakeholders make their vision for the product materialise, especially in the early stages of each delivery phase
• Be the stakeholders' proxy in the team – able to make quick, firm decisions on scope, requirements and prioritisation/triage
• Drive backlog review and estimation processes, and take part in planning activities
• Define acceptance criteria and tests up front as part of a Business-Driven Development approach
• Follow up during implementation and testing phases to ensure delivery satisfies requirements

• Work closely with QA to assess failure scenarios and help distinguish bugs, enhancements, and new feature requirements
• Facilitate discussions across technical and business stakeholders to drive clarity, alignment, and sound decision-making
• Support delivery, implementation, and release processes, ensuring solutions align with business objectives, customer use cases, and non-functional expectations
• Help improve operational processes and workflows — both internally and externally — bringing a calm, pragmatic and collaborative approach

You can check our Glassdoor page 🎉

Long interview processes are stressful and boring, and that is not us 😉

We want to make sure that everything runs smoothly.

1- A chat with one of our great recruiters. 2- A zoom chat with one of our BA colleagues where they will ask you detailed questions about your experience 3- A Face to Face interview (via Zoom).

But don’t worry; everything will be explained to you step by step by your recruiter.

Here is a little tip for you during those stages:

Collaboration is massively important to us, so don't hesitate to share your thoughts, ask questions, ask for help if needed, etc 😊