Senior Software Engineer (Back End) in London

Senior Software Engineer (Back End) in London

London Full-Time 63000 - 77000 £ / year (est.) No working from home possible
ICAP

At a Glance

  • Tasks: Design and develop robust server-side applications and APIs for high-volume environments.
  • Company: Join TP ICAP, a leading global market infrastructure provider with a collaborative culture.
  • Benefits: Enjoy competitive salary, health benefits, and opportunities for professional growth.
  • Other info: Be part of a diverse team driving innovation and continuous improvement.
  • Why this job: Shape the future of trading technology and make a real impact in a dynamic environment.
  • Qualifications: Experience in building latency-sensitive trading systems and strong problem-solving skills required.

The predicted salary is between 63000 - 77000 £ per year.

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.

Founded in London in 1866, the Group operates from more than 60 offices in 27 countries.

We are 5,200 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

As a Senior Back-End Engineer, you will design, develop, and maintain robust server-side applications and APIs that support high-volume, data-intensive environments.

You will play a key role in shaping technical architecture, ensuring system reliability, and driving best practices in software engineering.

This position requires strong problem‑solving skills, deep technical expertise, and the ability to collaborate effectively with cross‑functional teams.

  • Role Responsibilities
  • Lead by example as a hands ‑ on engineer, working closely with Architects, Principal Engineers, and Trading SMEs to design, build, review, test, and deliver mission‑critical, high‑performance systems end‑to‑end.
  • Own engineering deliverables throughout the full lifecycle, ensuring performance, scalability, resilience, and alignment with engineering best practices.
  • Mentor engineers, elevate code quality standards, and foster a culture of technical excellence.
  • Drive innovation through POCs, technical evaluations, and continuous improvement initiatives.
  • Leverage AI‑assisted tools to improve development efficiencyand help shaping our AI journey
  • Communicate progress proactively, highlighting risks and removing delivery impediments.

Experience / Competences

Essential

  • Significant years of hands‑on experience building and supporting latency‑sensitive front‑office trading systems (OMS, Matching, Execution).
  • Strong background in designing and maintaining distributed, event‑driven, cloud‑native applications.
  • Comprehensive SDLC experience across design, development, QA, deployment, and production support.
  • Ability to balance rapid delivery with architectural rigour and long‑term maintainability.
  • Proven problem‑solving capabilities and ability to validate ideas through POCs.
  • Ability to engage effectively with traders, quants, and other business stakeholders.
  • Desired
  • Domain experience in Credit or Fixed Income.
  • Expertise in modern . NET technologies and C# (Java or similar OO languages considered).
  • Strong relational database design and optimisation skills (MSSQL, My SQL).
  • Deep understanding of low‑latency engineering, concurrency, multithreading, and performance optimisation.
  • Experience implementing observability (metrics, tracing, logging) for distributed systems.
  • Experience with CI/CD pipelines, containerisation (Docker), and orchestration (Kubernetes/EKS).
  • Experience designing APIs (REST, Graph QL).
  • Knowledge of distributed messaging and caching technologies (e. g., Solace, Redis, or similar).
  • Understanding of FIX protocol and FIX message handling.
  • Hands‑on experience with AWS, microservices, and serverless patterns.
  • Understanding of TDD, BDD, or similar testing methodologies.

Role Band & Level

  • Manager, 6
  • 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 - 135 Bishopsgate - London
  • #J-18808-Ljbffr

Senior Software Engineer (Back End) in London employer: ICAP

At TP ICAP, we pride ourselves on being an exceptional employer, offering a dynamic and collaborative work environment in the heart of Belfast. Our commitment to innovation and continuous improvement empowers our employees to take ownership of their projects while fostering professional growth through mentorship and knowledge sharing. Join us to work with cutting-edge technology that shapes global financial markets, all while enjoying a culture that values creativity and teamwork.

ICAP

Contact Details:

ICAP Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Software Engineer (Back End) in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at ICAP or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to ICAP.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like ICAP.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like ICAP that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior Software Engineer (Back End) in London

Back-End Development
API Design (REST, GraphQL)
C# or Java (Object-Oriented Programming)
Distributed Systems
Event-Driven Architecture
Cloud-Native Applications
Relational Database Design (MSSQL, MySQL)

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at ICAP.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at ICAP and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at ICAP

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If ICAP uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.