AI in Capital Markets London: Modular Technology & Trading Tech Trends

Why Modular Technology and AI Are Reshaping Capital Markets

At the TradingTech Summit 2026 in London, Toby Babb sat down with Niketta Postlethwaite-Williams, Director of Strategic Accounts at Genesis Global, to explore one of the most important shifts currently shaping financial technology. From the evolution of modular architecture to the reality of artificial intelligence in production environments, this conversation provides a grounded and highly relevant perspective for firms navigating transformation across capital markets.

With over 20 years of experience in the industry, Niketta brings a product-led mindset to the discussion, offering insights that are directly applicable to financial institutions, technology providers, and hiring leaders looking to build high-performing FinTech teams. As a FinTech recruitment business working closely with organisations across London, New York, and globally, these are precisely the conversations shaping demand for talent, skills, and innovation in 2026.

Capital Markets Technology Careers: The Shift from Product to Commercial Leadership

Niketta’s career journey reflects a broader trend we are seeing across FinTech recruitment. Having spent the majority of her career working on the vendor side within product roles, she has more recently transitioned into a commercial, client-facing position. This shift is not accidental. As technology becomes more complex and clients demand greater customisation, the need for commercially-minded professionals with deep technical understanding has never been greater.

She explains that working within a technology company like Genesis allows individuals who understand the product to communicate its value more effectively. This alignment between technical expertise and sales capability is increasingly valuable across capital markets technology hiring. Businesses are no longer looking for traditional sales professionals alone; they are prioritising individuals who can translate complex technical solutions into tangible business outcomes.

For FinTech recruitment specialists, this represents a clear hiring trend. Firms are actively seeking talent that can operate across product, engineering, and commercial functions, bridging the gap between innovation and delivery.

FinTech Solutions and Modular Architecture: Moving Beyond Monolithic Systems

A central theme throughout the discussion is the shift away from traditional monolithic systems towards modular, API-first architectures. Genesis Global positions itself as a provider of tailored solutions built on a development application platform, enabling rapid delivery through prebuilt technical and business components.

Niketta describes how Genesis has developed over 60 solutions, ranging from smaller targeted tools to large-scale middle office systems. The key differentiator lies in their ability to build quickly while maintaining scalability, security, and compliance through a shared runtime environment .

This approach reflects a broader transformation across financial technology. Historically, firms relied heavily on large, inflexible enterprise systems that required significant customisation. Over time, these systems became difficult to maintain, expensive to scale, and misaligned with evolving business needs.

The modern approach is fundamentally different. Instead of forcing businesses to adapt to rigid platforms, technology providers are enabling firms to build around modular components. This allows organisations to retain control over their unique intellectual property while leveraging external expertise for commoditised functionality.

From a recruitment perspective, this shift is driving demand for engineers, architects, and product specialists with experience in API-first development, microservices, and modular system design. These are now some of the most in-demand FinTech jobs globally.

API-First Development in Financial Technology: Building Flexible and Scalable Systems

The conversation highlights the importance of API-first architecture as a foundation for modern financial systems. By designing solutions that can seamlessly integrate with internal platforms and third-party providers, firms gain the flexibility required to operate in increasingly complex environments.

Niketta explains that Genesis excels at acting as “the glue” between systems, enabling organisations to connect disparate technologies and create unified workflows . This capability is particularly valuable in capital markets, where firms often rely on a combination of legacy infrastructure, vendor solutions, and proprietary systems.

The ability to pull in clean data, establish a single source of truth, and deliver intuitive user interfaces is becoming a critical differentiator. As client expectations evolve, there is a growing emphasis on delivering seamless, efficient workflows supported by high-quality data.

For FinTech recruitment teams, this creates a strong demand for professionals with expertise in system integration, data engineering, and workflow optimisation. The talent required to design and implement these systems is highly specialised, making it a key area of focus for firms looking to gain a competitive edge.

Client Experience in FinTech: The Rise of Customised Portals and User-Centric Design

Another important trend discussed in the episode is the growing demand for client-facing portals and tailored user experiences. Financial institutions are increasingly expected to provide personalised solutions that meet the specific needs of their clients.

Genesis has seen significant growth in demand for single-dealer portals and similar solutions, which allow firms to integrate internal trading systems with external platforms such as Bloomberg and other third-party providers . These portals enable organisations to deliver customised experiences while maintaining connectivity across their technology stack.

This shift reflects a broader change in the industry. Clients are no longer satisfied with standardised offerings. They expect solutions that align with their workflows, preferences, and strategic objectives.

For hiring managers and FinTech recruitment specialists, this means prioritising candidates who understand user experience design, client engagement, and front-to-back workflow development. The intersection of technology and client experience is becoming increasingly important in shaping the future of financial services.

AI in FinTech: Moving from Hype to Practical Application

Artificial intelligence is a recurring theme throughout the conversation, but the discussion takes a refreshingly practical approach. Rather than focusing on theoretical possibilities, Niketta emphasises the importance of delivering tangible value.

She highlights that while AI has been discussed extensively for years, the past 12 months have seen a significant shift towards real-world application. At Genesis, AI is being used across three key areas: internal productivity, development processes, and client-facing solutions .

This layered approach demonstrates how AI can enhance efficiency at multiple levels within an organisation. From improving developer productivity through advanced tooling to embedding intelligence within solutions, the potential benefits are substantial.

However, the most important takeaway is that AI must be purposeful. It is not about implementing technology for the sake of it. Instead, firms must identify specific problems and determine how AI can provide measurable improvements.

AI in Capital Markets Recruitment: Solving Real Problems, Not Chasing Trends

One of the most insightful parts of the discussion centres on how firms are approaching AI adoption. Toby raises a common challenge: many organisations feel pressure to implement AI without fully understanding its use cases.

Niketta acknowledges this reality and explains how Genesis works closely with clients to identify where AI can genuinely add value. For example, they have developed an AI-powered allocation assistant within one of their solutions, designed to address specific challenges around trade matching and operational efficiency.

This approach ensures that AI initiatives are grounded in real business needs. By focusing on improving workflows, reducing errors, and enhancing productivity, firms can achieve meaningful outcomes rather than simply following industry trends.

For FinTech recruitment, this has significant implications. There is growing demand for professionals who can bridge the gap between data science, engineering, and business strategy. Employers are looking for individuals who understand not only how to build AI solutions, but also how to apply them effectively within financial services.

Risk, Compliance and AI in Financial Services: Navigating Guardrails and Trust

The conversation also touches on one of the most critical challenges associated with AI in financial markets: trust. Given the highly regulated nature of the industry, firms must be cautious when deploying AI, particularly in live trading and operational environments.

Niketta explains that Genesis incorporates guardrails within its AI solutions to ensure reliability and prevent issues such as hallucinations. By embedding AI within defined constraints, they can deliver value while maintaining the integrity and accuracy required in financial systems .

This balance between innovation and control is essential. As AI adoption continues to grow, firms must ensure that their solutions meet regulatory requirements and maintain the highest standards of data quality and governance.

From a recruitment standpoint, this is driving demand for specialists in AI governance, model validation, and regulatory compliance. These roles are becoming increasingly important as organisations seek to scale their use of AI responsibly.

Buy vs Build in FinTech: The Evolution Towards Hybrid Technology Strategies

Another key theme explored in the episode is the evolution of the “buy versus build” debate. Traditionally, firms faced a binary choice between purchasing vendor solutions or developing systems in-house.

However, as Niketta explains, this conversation is becoming less relevant. Instead, organisations are adopting hybrid approaches that combine external platforms with internal development capabilities. This allows them to focus on their unique value proposition while leveraging external expertise for commoditised components .

This shift is closely linked to the rise of modular architecture. By breaking systems into smaller, interoperable components, firms can create flexible technology stacks that evolve over time.

For FinTech recruitment businesses like Harrington Starr, this trend is particularly significant. It highlights the need for talent that can operate within hybrid environments, integrating multiple technologies and delivering cohesive solutions.

FinTech Hiring Trends 2026: Skills Driving the Future of Financial Technology

The insights shared in this episode provide a clear indication of where the market is heading. Across capital markets and financial services, there is a growing demand for professionals with expertise in modular systems, API-first development, and AI-driven solutions.

At the same time, there is an increasing emphasis on collaboration between technical and commercial teams. As organisations strive to deliver tailored solutions and improve client experiences, they require individuals who can navigate both domains effectively.

For employers, this means rethinking hiring strategies to attract and retain top talent. For candidates, it presents an opportunity to develop skills that are highly valued in a rapidly evolving industry.

The Future of FinTech Innovation: What’s Next for Genesis and the Industry

Looking ahead, Niketta highlights a renewed focus within Genesis on delivering tailored solutions built on their application development platform. This clarity of purpose is enabling the company to approach clients with confidence, offering solutions that address specific challenges and deliver measurable value .

At the same time, the integration of AI across their platform represents an exciting opportunity to enhance their offering further. By combining modular architecture with intelligent capabilities, Genesis is well positioned to support the next phase of innovation in financial technology.

For the wider industry, this conversation underscores a broader shift towards more flexible, efficient, and client-centric solutions. As technology continues to evolve, the ability to adapt quickly and deliver value will be critical.

What This Means for FinTech Recruitment and Talent Strategy

This episode of FinTech Focus TV provides a clear and practical perspective on some of the most important trends shaping the industry today. From the move towards modular systems to the responsible adoption of AI, the insights shared by Niketta Postlethwaite-Williams highlight the challenges and opportunities facing financial institutions in 2026.

For Harrington Starr, these conversations are central to our role as a FinTech recruitment partner. By understanding the technologies, trends, and strategies driving the market, we can help our clients build the teams they need to succeed.

As firms continue to navigate transformation, the demand for skilled professionals across engineering, data, product, and commercial roles will only increase. Those who can combine technical expertise with strategic thinking will be at the forefront of this evolution.