Principal Software Engineer

TP ICAP Group Services Ltd; Belfast City District; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

TP ICAP Group Services Ltd in Belfast is seeking a technical leader for a real-time trading frontend platform built with React and TypeScript. You will define the architecture, set coding standards, and drive delivery across a Turborepo/pnpm monorepo.

You will mentor senior engineers, collaborate with product and backend teams (C#/.NET, GraphQL), and balance long-term vision with pragmatic delivery under real market conditions.

Qualifications

• Extensive experience architecting large React/TypeScript frontends.
• Strong understanding of state management, data flow, and performance at scale.
• Proven ability to define and enforce testing standards across unit/integration/browser layers.
• Experience leading multi-team frontend initiatives within a monorepo.

Responsibilities

• Own frontend architecture: component boundaries, data-flow contracts, and state patterns.
• Drive platform strategy: evaluate tools, migrations, and build-vs-buy decisions with rationale.
• Set engineering standards: testing, code quality, observability, and CI processes.
• Design scalable solutions for real-time data rendering, AG Grid tuning, and Redux-saga orchestration.
• Lead delivery across multiple workstreams; unblock teams and ensure consistency.
• Mentor Senior Engineers via architecture reviews and collaborative problem solving.
• Collaborate with Product, Architects, and backend teams to align roadmaps and trade-offs.

Skills

Deep React + TS

Redux in complex UIs

Monorepo architecture

GraphQL experience

Testing strategies

Mentoring engineers

Tools

Turborepo

pnpm

Apollo Client

Vitest

Playwright

Job description

Group Overview

The TP ICAP Group is a world leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. Through our people and technology, we connect clients to superior liquidity and data solutions. The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the world’s leading provider of OTC data, and an award winning all-to-all trading platform. The Group operates from more than 60 offices in 27 countries. We are 5,300 people strong. We work as one to achieve our vision of being the world’s most trusted, innovative, liquidity and data solutions specialist.

Role Overview

You’ll be the technical leader for a real-time trading platform used daily by brokers across Rates & FX desks. The frontend is a large-scale React/TypeScript monorepo — dense data grids, real-time pricing via WebSocket and GraphQL subscriptions, and complex multi-panel layouts. You’ll set the technical direction and make sure the architecture scales as the product grows. You’ll own the frontend architecture end-to-end: defining patterns, driving quality standards, removing technical debt, and enabling your team to ship confidently. You balance long-term technical vision with pragmatic delivery under real market conditions.

Role Responsibilities

• Own the frontend architecture: define component boundaries, state management patterns, and data-flow contracts across a pnpm/Turborepo monorepo
• Drive technical strategy for the platform — evaluate new tools, plan migrations, and make build-vs-buy decisions with clear rationale
• Set and enforce engineering standards: testing strategy (Vitest, Playwright, MSW), code quality (Biome, Knip, dependency-cruiser), and observability (Grafana Faro, OpenTelemetry)
• Design solutions for complex problems: real-time data rendering at scale, performant AG Grid configurations, efficient Redux-saga orchestration, and GraphQL subscription management
• Lead technical delivery across multiple workstreams — unblock teams, resolve cross-cutting concerns, and ensure consistency across packages
• Mentor and grow Senior Engineers through architecture reviews, pairing on hard problems, and creating space for others to make decisions
• Collaborate with Product, Architects, and backend teams (C#/.NET, GraphQL BFF) to shape roadmap priorities and negotiate technical trade-offs

Experience / Competences

• Essential Deep React + TypeScript expertise — you’ve architected large-scale applications and made structural decisions you can defend
• Strong experience with Redux in complex, data-intensive UIs (sagas, selectors, normalised state, performance at scale)
• Proven ability to design and maintain monorepo architecture: package boundaries, dependency management, build orchestration with Turborepo/pnpm
• Production GraphQL experience (Apollo Client) — schema design collaboration, caching strategies, subscriptions, codegen workflows
• Experience defining and implementing testing strategies across unit, integration, and browser layers
• Track record of improving developer experience: build performance, linting/formatting automation, CI pipeline optimisation ??

Role Band & Level

Manager, 7 #LI-Hybrid #LI-MID #NIJobs

Not The Perfect Fit?

Concerned that you may not meet the criteria precisely? At TP ICAP, we wholeheartedly believe in fostering inclusivity and cultivating a work environment where everyone can flourish, regardless of your personal or professional background.

Company Statement

We know that the best innovation happens when diverse people with different perspectives and skills work together in an inclusive atmosphere. That's why we're building a culture where everyone plays a part in making people feel welcome, ready and willing to contribute. TP ICAP Accord - our Employee Network - is a central to this. As well as representing specific groups, TP ICAP Accord helps increase awareness, collaboration, shares best practice, and holds our firm to account for driving continuous cultural improvement.

Location UK - City Quays 3 - Belfast

Connecting clients, communities and colleagues for sustainable growth TP ICAP connects people, platforms, ideas, and insight across the world’s financial, energy and commodities markets. As a global leader in market infrastructure and data-led solutions, we enhance market access, increase efficiencies, and unlock possibilities.

Work with us

Joining TP ICAP puts you at the heart of markets that matter. You’ll have the freedom to innovate and act on your initiative. We’ll train you and build your abilities in your specialist area, so that you can become an expert in your field. And all within a connected network that’s there to set you up for success.

More about us

TP ICAP Group is a collection of premium brands each with a distinct, client-focused offering. Underpinning and connecting these client-facing brands is the financial security, operational strength and know-how we have as a Group. Connections are at the heart of what we do. We combine our people’s know-how with the latest technology to improve price discovery, trade execution and liquidity flow. Connections create strength. Through them, we help our clients to manage risk, realise investment strategies and expand the scope for growth. And connections act as a catalyst. Sparking richer solutions…modernising markets for futureperformance, andcreating dynamic careers for our people. Our capacity to connect builds trust, supports communities and gives us the power to anticipate and respond to change, whatever direction the world takes. It’s what makes TP ICAP a mainstay in the global markets, now and in the future.

TP ICAP. We connect.