Transforming a Fast-Growing Fintech Platform for Scale, Speed and Success
How Nimble Approach helped a fast-growing investment platform modernise its technology, improve delivery, and launch new products — all while upskilling internal teams for long-term success.
New Revenue Streams Opened
Faster, More Reliable Releases
In-Housed Core Services
Upskilled Internal Teams
Their Fintech Vision
A fast-growing UK Fintech — backed by one of the country’s largest insurance providers — set out to modernise and scale its investment platform as part of a major in-housing initiative. With customer demand growing and an ambitious roadmap ahead, the company needed to:
- Launch new products quickly and safely
- Own and operate key backend services internally
- Enhance customer experience through smarter infrastructure and improved design
- Build internal capability to support long-term scale
Nimble Approach was brought in to help realise this vision — blending hands-on delivery with strategic support and deep integration into their teams.
Challenges Holding Them Back
But translating that vision into reality came with a set of complex challenges:
- In-housing key services like ISAs and JISAs required significant system overhauls
- Stretched internal teams were struggling to keep up with delivery demands
- Limited QA tooling and inconsistency slowed down releases and introduced risk
- Knowledge silos made onboarding and collaboration difficult, creating bottlenecks
Without change, the platform’s ability to grow — and to serve its customers reliably — was at risk.
How We Transformed The Fintech Platform
We embedded teams with the client across multiple squads, providing a blend of strategic thinking, hands-on delivery, and deep integration. Our focus was on solving real problems, transferring knowledge, and delivering sustainable change.
Testing and Quality Assurance:
We refreshed their entire QA strategy. This included implementing TestRail, giving the business:
- Clear visibility into testing progress and risks
- Stronger alignment between development and QA
- Increased release confidence
Backend Development
We delivered backend services from the ground up, including:
- Client money and payment infrastructure
- ISA and JISA management systems
- Corporate actions and real-time reconciliations
We also supported backend services for their mobile app and simplified architectural complexity to enable faster, more flexible delivery.
Knowledge Transfer and Upskilling:
Rather than operate in a silo, we worked shoulder-to-shoulder with in-house developers and testers — coaching them on tooling, best practices, and delivery processes. Our aim: leave the team stronger than we found it.
Seamless Cultural Integration:
With support from a dedicated Engagement Lead, our team became a natural extension of theirs — aligning closely on values, tools, and ways of working.
The Results and Outcomes
Through this transformation, Nimble helped the business unlock the next phase of its growth — enabling faster delivery, improving platform resilience, and supporting the launch of new customer propositions. By strengthening internal capability and modernising their tech stack, the company is now better positioned to scale, explore new revenue streams, and confidently expand into new market opportunities.
This engagement delivered real strategic impact across technical, operational, and product domains.
New Revenue Stream
We supported the successful launch of a cash savings product, attracting customer deposits and expanding the platform’s offering.
In-Housed Core Services
Client money, payments, and ISA services are now owned and operated internally — improving flexibility and control.
Faster, More Reliable Releases
Structured QA practices and better tooling enabled faster, safer deployments — with fewer defects and more confidence.
Upskilled Internal Teams
Nimble embedded best practices in testing, development, and collaboration, leaving the internal team more capable, confident, and future-ready.
Trusted Delivery Partner
Beyond technical delivery, we built strong relationships. The client valued our transparency, adaptability, and shared ownership of outcomes.
Looking Ahead
This transformation shows what’s possible when delivery, strategy, and cultural fit come together. By tackling key blockers, building in-house capability, and delivering new customer-facing products, we helped our client scale sustainably and move faster in a fast-changing market.
The Tech We Used
We used a modern, cloud-first stack to build scalable, maintainable systems:
- Microsoft Azure – for secure, cloud-based infrastructure
- C# / .NET – for robust backend development
- TestRail – for test planning and execution
- Azure DevOps – to streamline CI/CD
- Kubernetes and Docker – for efficient deployment and orchestration
Why Chose Nimble Approach
Our client work with us for our:
- Strategic approach and open mindset
- Ability to uncover and solve the real problems
- Bias for action and pace
- Embedded, transparent ways of working
- Cultural fit and partnership mentality
Want to do the same?
If you’re looking to scale your platform, strengthen your team, or improve delivery outcomes, Nimble can help.
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