ICAP Logo

ICAP

Principal Software Engineer

Posted 48 Minutes Ago
Be an Early Applicant
Hybrid
Belfast, County Antrim, Northern Ireland, GBR
Expert/Leader
Hybrid
Belfast, County Antrim, Northern Ireland, GBR
Expert/Leader
Technical leader responsible for the frontend architecture of a real-time React and TypeScript trading platform. The role owns monorepo architecture, engineering standards, testing, observability, performance, technical migrations, and cross-team delivery. It involves solving high-scale data rendering and GraphQL subscription challenges, mentoring senior engineers, evaluating tools, and collaborating with product, architecture, and backend teams on technical strategy and roadmap priorities.
The summary above was generated by AI

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
  • You’ve led technical migrations or platform upgrades without halting feature delivery
  • Experience setting up or evolving frontend observability (RUM, tracing, error budgets)
  • Strong communicator who can translate architectural decisions into clear rationale for engineers, product, and leadership

Desired

  • Experience with real-time data systems (WebSockets, streaming updates, high-frequency UI rendering)
  • Deep AG Grid expertise — custom renderers, virtual scrolling, enterprise modules at scale
  • Exposure to financial/trading platforms or latency-sensitive environments
  • Experience with Module Federation or micro-frontend architectures
  • Familiarity with feature flag systems (Unleash) and progressive rollout strategies
  • Backend awareness (C#/.NET, GraphQL resolvers, relational databases) sufficient to
  • collaborate on API design

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. If you are enthusiastic about this role but find that your experience doesn't align perfectly with every aspect of the job description, we strongly encourage you to apply. You may be the ideal candidate for this position or another opportunity within our organisation. Our dedicated Talent Acquisition team is here to assist you in recognising how your unique skills and abilities can be a valuable contribution. Don't hesitate to take the leap and explore the possibilities. Your potential is what truly matters to us.

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

Similar Jobs

22 Days Ago
Remote or Hybrid
United Kingdom
Expert/Leader
Expert/Leader
Retail • Software
Lead technical strategy and software engineering excellence across customer platform systems supporting warehouse operations. Design and launch complex, high-impact solutions; promote clean architecture, DevOps, security, observability, reliability, performance engineering, and testing practices. Influence technology and product investment decisions, mentor senior engineers, improve engineering processes, support recruitment and outreach, and foster innovation, autonomy, and engineering maturity across cross-functional teams.
Top Skills: AngularAzure CloudContinuous DeliveryContinuous IntegrationDevOpsDynatraceIgniteJavaKubernetesMicronautMongoDBNew RelicNext.JsReactRedisSpringSpring BootSQL ServerTypescript
2 Months Ago
Remote or Hybrid
United Kingdom
Senior level
Senior level
Artificial Intelligence • Fintech • Software • Financial Services
Own technical direction and hands-on execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; lead architecture decisions; solve production problems; improve testing, security, observability, and development practices; and mentor engineers across teams.
Top Skills: APIsBackend SystemsCloud InfrastructureDatabasesDistributed SystemsFrontend SystemsObservabilitySystem Design
2 Months Ago
Remote or Hybrid
United Kingdom
Expert/Leader
Expert/Leader
Artificial Intelligence • Fintech • Software • Financial Services
Leads application engineering for an AI-powered email product across backend, mobile, and desktop platforms. Designs reliable AI workflows involving orchestration, state, tool use, retries, fallbacks, and failure handling. Builds APIs connecting AI capabilities to product experiences, makes architectural trade-offs, establishes observability and operational excellence, and leads a small senior engineering team through mentorship, design reviews, and code reviews. Partners with ML leadership to deliver scalable, reliable, and maintainable production systems.
Top Skills: Ai-Powered WorkflowsAPIsBackend SystemsDesktop ApplicationsLarge Language ModelsMachine LearningMobile ApplicationsMonitoringObservabilityTesting

What you need to know about the Belfast Tech Scene

If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account