1 to 25 of 151 FIX Protocol Jobs in London

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 ❯

wealth, alternative investments, insurance, banking, and pension markets. Charles River IMS provides a comprehensive Order and Execution Management System (OEMS) seamlessly integrated with data, FIX connectivity, and trade analytics. Extensive trade decision support capabilities help traders find liquidity, execute trades across all asset classes and currencies, and helps ensure … trades are compliant. The Charles River Network supports electronic trading via the FIX messaging protocol to over 600 global liquidity venues including brokers, multi-broker trading venues, crossing networks, broker algorithms, program desks, dark pools, smart order routers, ECNs, and ATSs. Full integration between the Charles River Network … and Charles River IMS ensures fast and reliable direct access between Charles River clients, brokers, and trading venues. Charles River's FIX Administration team provides global, 24/7 support which helps simplify network operation and eliminates the need for FIX network management by the client. Charles River More ❯

developers, infrastructure, and security teams to ensure technical feasibility and alignment with best practices. Ensure integration with market data feeds and execution systems using FIX protocol . Contribute to architectural discussions and design reviews. Uphold cybersecurity standards in coordination with security consultants. Leverage AWS infrastructure for deploying, monitoring … performance. Excellent communication and documentation skills, especially when bridging technical and business perspectives. Nice to have: Solid understanding and hands-on experience with the FIX protocol and electronic trading systems. Prior experience in building trading platforms or single dealer platforms. Working knowledge of public and private networking concepts 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 ❯

. Proven track record building real-time , low-latency , multi-threaded trading systems . Experience with exchange connectivity protocols (e.g., ICE, CME) Experience with FIX protocol/Connections (including FIX session and application layer development). Deep understanding of market data systems - acquiring, parsing, and manipulating data More ❯

. Proven track record building real-time , low-latency , multi-threaded trading systems . Experience with exchange connectivity protocols (e.g., ICE, CME) Experience with FIX protocol/Connections (including FIX session and application layer development). Deep understanding of market data systems - acquiring, parsing, and manipulating data 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 ❯

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 ❯

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 ❯

focusing on low-level performance tuning, multithreading , and garbage collection optimization . FIC or similar business knowledge: Strong understanding of FIC markets Experience with FIX protocol , SBE Market Data Feeds (e.g., Refinitiv, Bloomberg), and LP connectivity . Real time Messaging Systems: Experience with low-latency messaging technologies such … as Solace . Linux based systems, CI/CD pipelines, GitHub Actions, MyBatis, Maven Advanced experience with FIX Engines/Routers (Raptor, Catalyst, Chronicle, or similar tools). Distributed Systems: Experience with distributed computing , clustering , and scalability strategies . Soft Skills: Excellent communication and interpersonal skills to work effectively More ❯

focusing on low-level performance tuning, multithreading , and garbage collection optimization . FIC or similar business knowledge: Strong understanding of FIC markets Experience with FIX protocol , SBE Market Data Feeds (e.g., Refinitiv, Bloomberg), and LP connectivity . Real time Messaging Systems: Experience with low-latency messaging technologies such … as Solace . Linux based systems, CI/CD pipelines, GitHub Actions, MyBatis, Maven Advanced experience with FIX Engines/Routers (Raptor, Catalyst, Chronicle, or similar tools). Distributed Systems: Experience with distributed computing , clustering , and scalability strategies . Soft Skills: Excellent communication and interpersonal skills to work effectively More ❯

motivated self-starter who has the technical skills to support a growing number of buy-side members in London and across Europe utilising their FIX, Linux, Windows Server, DevOps, database and networking skills. This will be a varied role involving working on a multitude of cross-platform market-leading … successful candidate should possess a positive 'can-do' attitude and an intuitively high level of customer service in their approach. This will complement strong FIX, database (SQL, Sybase or Oracle), as well as Linux, understanding of cloud-based technologies, Windows and Networking troubleshooting skills. Role Responsibilities Contribute towards 'follow … MSSQL, Oracle and Sybase database environments, including complex query-writing Application support experience within a Unix/Linux environment Strong working knowledge of the FIX protocol Proven experience of supporting Windows Server environments Experience in troubleshooting network problems: i.e., firewall and routing problems Understanding of international Equity market More ❯

real-time trading environments. Knowledge of support applications utilizing high-performance messaging/middleware. Strong analytical, verbal, and written communication skills. Knowledge of the FIX protocol. Development skills in Java, C#, or C++ are a plus. Personal Attributes: Excellent communication skills, including clear writing. Ability to work effectively as 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 ❯

Job Description 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. … 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 ❯

and troubleshooting FAQs. • Resolve complex application and technical problems. • Debugging the system and fixing the production related issues. • Escalate/follow-up on permanent fix for development related issues. • Lead incident response efforts and post-mortem analysis to prevent future occurrences. • Handles complex operational tasks and recommends process and … services. • Strong experience in scripting language like Power shell, Python and SQL. • Strong Knowledge of monitoring tools – Nagios, Splunk, OTEL, Datadog • Strong Knowledge of FIX protocol • Strong Domain skills - Must have working experience in Capital Markets across modules and instruments especially – CASH, ETS, Bonds, Options, Futures, Swaps products More ❯

and troubleshooting FAQs. • Resolve complex application and technical problems. • Debugging the system and fixing the production related issues. • Escalate/follow-up on permanent fix for development related issues. • Lead incident response efforts and post-mortem analysis to prevent future occurrences. • Handles complex operational tasks and recommends process and … services. • Strong experience in scripting language like Power shell, Python and SQL. • Strong Knowledge of monitoring tools – Nagios, Splunk, OTEL, Datadog • Strong Knowledge of FIX protocol • Strong Domain skills - Must have working experience in Capital Markets across modules and instruments especially – CASH, ETS, Bonds, Options, Futures, Swaps products More ❯

grow Confidence interacting with business partners and senior stakeholders, providing clear, concise, and accurate updates Knowledge of Equities Trading, Referencedata, Market data feeds, Analytics, FIX protocol, Signals, Smart order routing, Systematic internalization, Trading algorithms Other technical knowledge such as Azul Zing, OpenHFT Chronicle, Google Protocol Buffers, CPU 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 ❯

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 ❯

design patterns and a strong grasp of software design principles . Experience working with low-latency/high-throughput messaging platforms . Familiarity with FIX API for exchange and venue connectivity is desirable. Exposure to relational and time series databases and proficiency in SQL/Q is advantageous. Scripting More ❯