1 to 25 of 127 FIX Protocol Jobs in the UK

FIX Connectivity Engineer - AVP (Hybrid) Overview Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer … unparalleled access to capital and liquidity. What We do/The Team This role is within the Equities Electronic Technology organization within the Global FIX Engineering Team. The FIX Engineering team is responsible for all Client onboarding as well as FIX connection support and maintenance across Citi … directly with external clients, software vendors and various multi-asset business teams at Citi. The team globally provides 24/5 follow the sun FIX Connection coverage through teams in Singapore, Pune, New York, and the UK. The candidate will be expected to participate in prioritization, project planning, certification More ❯

System (PMS) to the OMS/EMS, ensuring seamless trade staging and execution. Develop and optimize execution strategies and trade management workflows. Work with FIX protocol and other connectivity solutions to integrate with brokers, exchanges, and liquidity providers. Implement low-latency, high-throughput software to support fast and … experience working on Order Management Systems (OMS) and/or Execution Management Systems (EMS)—either developing bespoke solutions or integrating vendor platforms. Familiarity with FIX protocol and other trading connectivity standards. Experience in low-latency software development, optimizing performance for real-time trading. Strong understanding of electronic trading More ❯

System (PMS) to the OMS/EMS, ensuring seamless trade staging and execution. Develop and optimize execution strategies and trade management workflows. Work with FIX protocol and other connectivity solutions to integrate with brokers, exchanges, and liquidity providers. Implement low-latency, high-throughput software to support fast and … experience working on Order Management Systems (OMS) and/or Execution Management Systems (EMS)—either developing bespoke solutions or integrating vendor platforms. Familiarity with FIX protocol and other trading connectivity standards. Experience in low-latency software development, optimizing performance for real-time trading. Strong understanding of electronic trading More ❯

Referment is partnering with a top-performing hedge fund that is seeking a Software Engineer with strong FIX connectivity experience to join their high-calibre Engineering team. This is an exciting opportunity to contribute to a world-class trading environment that values autonomy, innovation, and technical excellence. You will … of developers, building and supporting tools that underpin the fund’s trading and investment workflows, with a particular focus on trading systems integration and FIX protocol. This is a highly visible role, working closely with traders, portfolio managers, and other stakeholders to deliver robust solutions across the full SDLC. … Technologies & Platform: Core platform: .NET (C#), SQL Server, KDB+. UI: WPF desktop. Scripting/strategy layer: Python. Messaging and connectivity: FIX protocol, REST APIs. Key Responsibilities for the role include: Lead the implementation and enhancement of FIX connectivity solutions for trade execution and post-trade workflows. Collaborate More ❯

Referment is partnering with a top-performing hedge fund that is seeking a Software Engineer with strong FIX connectivity experience to join their high-calibre Engineering team. This is an exciting opportunity to contribute to a world-class trading environment that values autonomy, innovation, and technical excellence. You will … of developers, building and supporting tools that underpin the fund’s trading and investment workflows, with a particular focus on trading systems integration and FIX protocol. This is a highly visible role, working closely with traders, portfolio managers, and other stakeholders to deliver robust solutions across the full SDLC. … Technologies & Platform: Core platform: .NET (C#), SQL Server, KDB+. UI: WPF desktop. Scripting/strategy layer: Python. Messaging and connectivity: FIX protocol, REST APIs. Key Responsibilities for the role include: Lead the implementation and enhancement of FIX connectivity solutions for trade execution and post-trade workflows. Collaborate More ❯

that business requirements are met. Drive a best practices approach to the continuous improvement of products, processes, and tools. Identify and correct bottlenecks and fix bugs for all production issues. Liaise with product development team to plan new features. Research and suggest new mobile products, applications and protocol. Qualifications … Studio, Eclipse) and source control tools (Git, Stash). Ability to perform in a team environment. Knowledge and experience with the Financial Information Exchange FIX Protocol would be handy as well as working with trading or currency exchange technology. This position is based in the City London. Salary More ❯

code A passion for continuous improvement and test-driven design plus innovative, big-picture thinking grounded in real-world pragmatism An understanding of the FIX engines, FIX protocol and connectivity Ability to operate autonomously as well as collaborate with developers, traders, researchers and business operations Ideally experience More ❯

Technical Skills: Proficiency in Windows and Unix/Linux operating systems. Experience with SQL databases (Postgres, Oracle, Sybase). Understanding of trading processes, including FIX connectivity, order management, pricing, and market making. Familiarity with ITIL framework processes for incident and problem management. Knowledge of observability and monitoring tools (e.g. More ❯

Technical skills: Proficiency in Windows and Unix/Linux operating systems. Experience with SQL databases (Postgres, Oracle, Sybase). Understanding of trading processes, including FIX connectivity, order management, pricing, and market making. Familiarity with ITIL framework processes for incident and problem management. Knowledge of observability and monitoring tools (e.g. More ❯

Proficiency in supporting and troubleshooting Windows applications. • Solid understanding of database concepts and SQL query language. • Strong knowledge of AWS/Azure. • Familiarity with FIX protocol and experience with FIX connectivity troubleshooting. • Excellent problem-solving skills and ability to work well under pressure in a fast-paced More ❯

Senior Low-Latency Java Developer – FX Trading/FIX Integration 📍 Location: London (Remote with occasional onsite requirements) 🕒 Contract Duration: 6 to 12 months (Extension possible) We're looking for a seasoned Java developer to join our high-performing electronic trading team, helping drive low-latency solutions in global FX … an agile, cross-functional team, you’ll design and build high-performance components for our electronic trading platforms, with a specific focus on integrating FIX-based pricing engines with multi-dealer platforms like FX Connect . You’ll work closely with trading and sales to deliver fast, reliable, and … Hands-on experience with FX Connect or similar client trading platforms Strong multi-threading, lock-free, and low GC design knowledge Solid understanding of FIX, REST APIs, distributed systems, and messaging They're looking for a senior, low-latency Java developer with FIX protocol experience , ideally someone More ❯

risk, and execution systems. • Experience with multithreading, garbage collection tuning, and optimizing memory management. • Strong understanding of networking, TCP/IP, messaging protocols (e.g., FIX, Kafka, or RabbitMQ). • Experience working within banking, hedge funds, or financial institutions. • Solid understanding of algorithms, data structures, and system design principles. • Familiarity More ❯

risk, and execution systems. • Experience with multithreading, garbage collection tuning, and optimizing memory management. • Strong understanding of networking, TCP/IP, messaging protocols (e.g., FIX, Kafka, or RabbitMQ). • Experience working within banking, hedge funds, or financial institutions. • Solid understanding of algorithms, data structures, and system design principles. • Familiarity More ❯

Skills Desired: Interest in developing systems for automated market making, DMA or algo trading group in liquid markets (equities, FX, liquid rates, etc.) using FIX protocol Experience with web service development, REST, TypeScript knowledge with preferably Angular framework Experience with low-latency messaging Middleware pub/sub technologies. More ❯

Skills Desired: Interest in developing systems for automated market making, DMA or algo trading group in liquid markets (equities, FX, liquid rates, etc.) using FIX protocol Experience with web service development, REST, TypeScript knowledge with preferably Angular framework Experience with low-latency messaging Middleware pub/sub technologies. More ❯

Windows and Linux environments. Ensure all trading systems are fully operational before market open. Support a wide range of production systems including trading platforms, FIX/exchange connectivity, and risk systems. Manage release and deployment processes, maintaining stability in production environments. Maintain and support static data processes and internal More ❯

Windows and Linux environments. Ensure all trading systems are fully operational before market open. Support a wide range of production systems including trading platforms, FIX/exchange connectivity, and risk systems. Manage release and deployment processes, maintaining stability in production environments. Maintain and support static data processes and internal More ❯

Office, Back Office, Collateral Management, Risk & Treasury). Knowledge of SQL, Oracle, or PostgreSQL databases for performance tuning. Experience with Calypso APIs, integration (JMS, FIX, REST/SOAP), and messaging services. Strong understanding of Unix/Linux environments and shell scripting for automation. Familiarity with CI/CD tools More ❯

types of flow (Cash, DMA, Algos, Portfolio Trading, IOIs ). You will interact with clients and brokers to build solutions and maintain our FlexLINK FIX network. Responsibilities Buy-Side/Sell-Side Onboarding: Build and set up new FIX sessions to connect FlexTrade clients and brokers/exchanges. … On-board client and broker connections to our FlexLINK FIX network. Onboard existing clients with new destinations and for new asset classes. Work with development and Implementation teams to design and deploy new features for our clients. Perform certification testing with providers across multiple asset classes and flows. Maintain … Linux/Unix preferred). Ability to communicate confidently and concisely with both business and technical teams, vendor providers and colleagues. Understanding of the FIX protocol (not essential). Excellent time management skills, ability to multi-task. Desire to learn both the business and technical aspects of the More ❯

distributed systems. Strong communication skills and ability to collaborate with business stakeholders. Interest or experience in financial products (FX, Derivatives, Options) and familiarity with FIX Protocol, FpML, or similar financial models is a plus. More ❯

testing framework Qualifications/Experience: Extensive experience with Python (3.x), including multi-threading and performance tuning Knowledge/Experience of implement software using the FIX protocol Knowledge/Experience of implement software using Java (Spring framework) Knowledge of the cash equities trading area including European market structure is More ❯

testing framework Qualifications/Experience: Extensive experience with Python (3.x), including multi-threading and performance tuning Knowledge/Experience of implement software using the FIX protocol Knowledge/Experience of implement software using Java (Spring framework) Knowledge of the cash equities trading area including European market structure is More ❯

Hybrid, 3 days a week in person) Contract : 6 months + Start : ASAP Key Skills: Core Java | Java | Angular | Algorithmic Trading | UNIX/Linux | FIX Protocol | KDB/q | Messaging Middleware | Jenkins Responsibilities: Develop and enhance trading strategies and engines using core Java within high-performance trading systems. … Interest or experience in developing systems for automated market making, Direct Market Access (DMA), or algorithmic trading in liquid markets (equities, FX, rates) using FIX protocol. Experience with web service development, REST APIs, and TypeScript, preferably with the Angular framework. More ❯

Hybrid, 3 days a week in person) Contract : 6 months + Start : ASAP Key Skills: Core Java | Java | Angular | Algorithmic Trading | UNIX/Linux | FIX Protocol | KDB/q | Messaging Middleware | Jenkins Responsibilities: Develop and enhance trading strategies and engines using core Java within high-performance trading systems. … Interest or experience in developing systems for automated market making, Direct Market Access (DMA), or algorithmic trading in liquid markets (equities, FX, rates) using FIX protocol. Experience with web service development, REST APIs, and TypeScript, preferably with the Angular framework. More ❯

with stakeholders: sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production-ready software. Desirable skills: Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) (training will be given) Qualifications More ❯