Senior FIX Protocol Developer in London
Senior FIX Protocol Developer

Senior FIX Protocol Developer in London

London Full-Time 72000 - 108000 £ / year (est.) No home office possible
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Solytics Partners

At a Glance

  • Tasks: Design and maintain FIX-based connectivity solutions for trading systems.
  • Company: Award-winning global analytics firm with a focus on innovation.
  • Benefits: Hybrid work model, competitive salary, and opportunities for professional growth.
  • Other info: Collaborate with traders and enhance market connectivity in a fast-paced environment.
  • Why this job: Join a dynamic team and make an impact in the trading technology space.
  • Qualifications: 8+ years in electronic trading, expert in FIX protocol, strong C#/.NET skills.

The predicted salary is between 72000 - 108000 £ per year.

About Us: Solytics Partners is a Global Analytics firm, recognized with multiple industry awards for innovation and excellence. Our team comprises experts with deep domain knowledge in risk, analytics, AI/ML, AML/FCC, and fraud. By converging this expertise with cutting-edge technologies like AI, Machine Learning, Generative AI, and Large Language Models (LLMs), we deliver powerful automated platforms and incisive point solutions. Our offerings enable clients to streamline and future-proof their risk, AML, and analytics processes, comply seamlessly with global regulations, and safeguard financial systems. Whether it's solving complex challenges or driving operational efficiency, Solytics Partners is committed to empowering organizations with transformative tools to stay ahead in an evolving regulatory landscape.

Job Type: Inside IR 35 Contract for 1 year

Job Location: London, Hybrid

Job Summary: We are seeking a Senior FIX Protocol Developer to join a Front Office Market Connectivity team supporting Power and Gas trading. This role is focused on designing, building, and maintaining FIX-based connectivity to exchanges, brokers, and counterparties, rather than purely trading applications. The ideal candidate will be a FIX protocol expert with strong C#/.NET development skills, deep understanding of electronic market connectivity, and direct experience working in Front Office environments. Highly desirable candidates will have contributed to, or authored components of, the QuickFIX open-source project, demonstrating strong protocol-level expertise and engineering rigor.

Key Responsibilities:

  • Design, develop, and maintain FIX-based market connectivity solutions for Front Office trading systems
  • Build and enhance exchange, broker, and counterparty connectivity using FIX protocol
  • Implement FIX session management, order lifecycle handling, custom tags, and extensions
  • Optimize connectivity for low latency, high throughput, and high availability
  • Work closely with traders, connectivity teams, and infrastructure to deliver resilient solutions
  • Own and support connectivity components in production, including troubleshooting and incident resolution

Key Requirements:

  • 8+ years of experience in electronic trading or market connectivity development
  • Expert-level knowledge of FIX protocol, including session management and message flows
  • Authored or contributed to the QuickFIX open-source project
  • Deep experience with FIX engines such as QuickFIX or similar frameworks
  • Strong hands-on experience with C#/.NET
  • Proven Front Office development experience
  • Solid experience building and supporting market connectivity (exchanges, brokers, gateways, adapters)
  • Direct exposure to Power and Gas trading markets
  • Strong understanding of trading workflows, market structure, and connectivity architectures

Senior FIX Protocol Developer in London employer: Solytics Partners

At Solytics Partners, we pride ourselves on being an award-winning global analytics firm that fosters a dynamic and innovative work culture. Our London-based team enjoys the benefits of hybrid working, opportunities for professional growth in cutting-edge technologies like AI and Machine Learning, and a collaborative environment where expertise in risk and analytics is highly valued. Join us to be part of a transformative journey that empowers both our clients and our employees to excel in a rapidly evolving industry.
Solytics Partners

Contact Detail:

Solytics Partners Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior FIX Protocol Developer in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, especially those who work with FIX protocols or in trading environments. A friendly chat can lead to insider info about job openings that might not even be advertised yet.

✨Tip Number 2

Show off your skills! If you’ve contributed to projects like QuickFIX, make sure to highlight that in conversations. Bring it up during interviews or networking events to demonstrate your expertise and passion for the FIX protocol.

✨Tip Number 3

Prepare for technical interviews by brushing up on your C#/.NET skills and understanding of electronic market connectivity. Practise coding challenges and be ready to discuss your past projects in detail, especially those related to market connectivity.

✨Tip Number 4

Don’t forget to apply through our website! We’re always on the lookout for talented individuals like you. Keep an eye on our job postings and submit your application directly to increase your chances of landing that dream role.

We think you need these skills to ace Senior FIX Protocol Developer in London

FIX Protocol Expertise
C#/.NET Development
Electronic Market Connectivity
QuickFIX Contribution
Session Management
Order Lifecycle Handling
Low Latency Optimisation
High Throughput Solutions
High Availability Systems
Troubleshooting Skills
Incident Resolution
Market Connectivity Development
Power and Gas Trading Knowledge
Understanding of Trading Workflows
Connectivity Architectures

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior FIX Protocol Developer role. Highlight your experience with FIX protocol and C#/.NET development, as well as any contributions to the QuickFIX project. We want to see how your skills align with what we're looking for!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about this role and how your background in electronic trading and market connectivity makes you a perfect fit. Let us know what excites you about working with Solytics Partners.

Showcase Relevant Projects: If you've worked on any projects related to FIX-based connectivity or trading systems, make sure to mention them. We love seeing real-world examples of your expertise, especially if they demonstrate your problem-solving skills in Front Office environments.

Apply Through Our Website: Don't forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows us that you’re genuinely interested in joining our team at Solytics Partners.

How to prepare for a job interview at Solytics Partners

✨Know Your FIX Protocol Inside Out

Make sure you brush up on your FIX protocol knowledge before the interview. Be prepared to discuss session management, message flows, and any contributions you've made to projects like QuickFIX. This will show that you're not just familiar with the protocol but are also an expert in it.

✨Showcase Your C#/.NET Skills

Since strong C#/.NET development skills are crucial for this role, be ready to talk about specific projects where you've used these technologies. If possible, bring examples of your work or even snippets of code that demonstrate your expertise. This will help you stand out as a candidate who can hit the ground running.

✨Understand the Trading Environment

Familiarise yourself with the Power and Gas trading markets. Knowing the trading workflows and market structures will give you an edge. You might be asked how your solutions can enhance trading efficiency, so having insights into the industry will make your answers more relevant.

✨Prepare for Problem-Solving Scenarios

Expect to face technical questions or scenarios that require you to troubleshoot connectivity issues. Think through past experiences where you resolved similar problems and be ready to explain your thought process. This will demonstrate your ability to handle real-world challenges in a Front Office environment.

Senior FIX Protocol Developer in London
Solytics Partners
Location: London
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