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.
About Liquidnet
Liquidnet is a next-generation agency execution specialist. Powered by technology that helps drive institutional alpha, our trading and liquidity network intelligently and securely connects the world’s investors with the world’s investments.
Established in 1999 on the belief that there was a better way to trade, Liquidnet' journey began with a vision to create a platform that goes beyond traditional transactional models.
We wanted to build a community where traders could connect, collaborate, and execute trades with confidence. Over the years, we've grown from a vision into a thriving ecosystem that empowers the buy side in ways never before imagined.
We are committed to making trading more efficient, intelligent, and accessible. Our purpose guides every decision we make, from the tools we develop to the relationships we nurture with our Members.
Role Overview
Liquidnet is looking for a senior level FIX specialist to manage client connectivity to our fixed income trading systems. The team requires a motivated self-starter with strong project management and technical skills to support existing FIX and proprietary API connections and help drive the direction of client connectivity to all Liquidnet Fixed Income trading platforms. This is a hands-on role where the client will utilize their deep understanding of Fixed Income FIX workflows, strong database, Linux and Windows Server knowledge to manage all aspects of client connectivity.
This role will be predominantly based on the Fixed Income desk working directly with the sales people and interacting with technical teams across the Liquidnet membership. This is an exciting opportunity to join an expanding team focused on developing a strategically important Fixed Income business within Liquidnet. This will be a varied role involving working on a multitude of cross-platform market-leading technologies to support the running of our bespoke trading platform. The successful candidate will also contribute to front-to-back support duties on the Fixed Income platform which will include the daily support of the platform, configuring new members, managing front-end upgrade rollouts and testing of new functionality prior to release to members.
The 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 (MYSQL), as well as Windows Administration and Networking troubleshooting skills (which may also involve firewall/routing issues).
Role Responsibilities
Act as a senior escalation point for FIX‑related production issues, providing deep technical analysis and resolution across order entry, routing, execution, and post‑trade workflows
Provide expert‑level support for FIX connectivity, session management, and message flow across multiple clients and counterparties
Configure, support, and administer FIX sessions (initiator/acceptor), including certification, onboarding, and ongoing maintenance
Analyse FIX logs in real time to troubleshoot connectivity issues, message rejects, sequencing problems, latency, and message integrity
Troubleshoot end‑to‑end trade flow issues, including drop copy, allocation, and post‑trade FIX workflows
Support MTF member configuration and administration, ensuring FIX settings align with product and regulatory requirements
Perform and oversee regional start‑of‑day health checks, ensuring FIX gateways, processes, and client connectivity are operational
Work closely with Development, Low Touch, and Infrastructure teams to drive root cause analysis and permanent fixes
Partner daily with Sales, Trading, and external clients on FIX‑related queries, incidents, and enhancements
Own and drive incident management for FIX issues, including detailed documentation, trend analysis, and preventative actions
Support release testing, FIX certification cycles, and major platform upgrades, including out‑of‑hours or weekend work where required
Act as a subject‑matter expert, mentoring junior analysts and improving FIX support processes and runbooks
Qualifications / Skills
Essential
Strong hands‑on production support experience within a financial institution or trading venue, with strong FIX ownership
Proven expert‑level knowledge of the FIX protocol, including message types, tags, sequencing, session states, and custom extensions
Extensive experience setting up, certifying, and supporting FIX sessions for buy‑side, sell‑side, and OMS/EMS clients
Strong understanding of FIX versions (4.2, 4.4, 5.0 SP2) and handling of custom tags and venue specific implementations
Deep experience troubleshooting FIX connectivity issues and analysing FIX logs under production pressure
Solid understanding of Fixed Income products and trading workflows
Strong Unix / Linux skills for log analysis, scripting, and operational support
Working knowledge of at least one relational database (MSSQL, Oracle, Sybase, MySQL/MariaDB) with strong SQL query capability
Good understanding of Windows Server environments
Strong grasp of networking fundamentals, including firewalls, routing, and latency considerations
Desirable
Previous experience working at, or closely with, an OMS or EMS vendor
Experience supporting message‑based / event‑driven architectures (e.g. Solace, TIBCO, Kafka)
Hands‑on experience with FIX drop copy, allocations, and post‑trade workflows
Exposure to Fixed Income order routing
Experience leading FIX certification and client onboarding end‑to‑end
ITIL Foundation certification and experience working within an ITIL framework
Experience with scripting or programming languages (e.g. Python, Bash, Perl) for automation and analysis
Role Band & Level: Manager / 6
#LI-Hybrid #LI-MID
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 - 135 Bishopsgate - London
