Java Developer – ION Platform – Contract We are seeking a seasoned Java Developer with deep expertise in trading platforms and specifically outstanding knowledge of the ION ecosystem. The role involves building and supporting low-latency, multi-threaded systems for Rates and Credit markets. Key Responsibilities: Develop and maintain trading applications using Java and Spring Framework. Integrate and … support ION MarketView, XTP, Fidessa, and Treasury Suite platforms. Collaborate with global teams in Agile environments. Implement RESTful APIs and cloud-native solutions. Required Skills: 10+ years Java development experience. Strong multi-threading and low-latency programming. Deep understanding of financial instruments (Rates, Credit, Derivatives). Proven experience with ION platforms and FIX protocol. Familiarity with functional programming More ❯
Java Developer – ION Platform – Contract We are seeking a seasoned Java Developer with deep expertise in trading platforms and specifically outstanding knowledge of the ION ecosystem. The role involves building and supporting low-latency, multi-threaded systems for Rates and Credit markets. Key Responsibilities: Develop and maintain trading applications using Java and Spring Framework. Integrate and … support ION MarketView, XTP, Fidessa, and Treasury Suite platforms. Collaborate with global teams in Agile environments. Implement RESTful APIs and cloud-native solutions. Required Skills: 10+ years Java development experience. Strong multi-threading and low-latency programming. Deep understanding of financial instruments (Rates, Credit, Derivatives). Proven experience with ION platforms and FIX protocol. Familiarity with functional programming More ❯
days/weekly in London office Your Experience and Skills Required: 10+ years of professional Java development experience Strong knowledge of low-latency, multi-threaded programming techniques Experience with trading platforms (e.g., Bloomberg, Tradeweb) Understanding of financial markets, particularly Rates and Credit bonds/derivatives Oustanding experience and knowledge with ION platform Expertise in object-oriented design patterns More ❯
days/weekly in London office Your Experience and Skills Required: 10+ years of professional Java development experience Strong knowledge of low-latency, multi-threaded programming techniques Experience with trading platforms (e.g., Bloomberg, Tradeweb) Understanding of financial markets, particularly Rates and Credit bonds/derivatives Oustanding experience and knowledge with ION platform Expertise in object-oriented design patterns More ❯
The Role: ION Markets Information Security Team is looking to hire a Platform Security Engineer that supports the division's security strategy through definition and implementation of security controls across our platforms, infrastructure, and operational workflows. As the Platform Security Engineer, you will be responsible for designing and implementing end-to-end security controls across ION Markets on … logging coverage and implementing additional monitoring capabilities. Maintain, update, and regularly test incident response runbooks, containment strategies, and escalation protocols. Lead the end-to-end vulnerability management process for ION Markets systems, from identification to remediation. Provide support for security architecture reviews of developed systems to ensure alignment with best practices. Stay up to date with the latest security … SIEM, DLP, SWG, CASB, UEBA, IDS, IPS, firewalls, IAM/PIM/PAM, vulnerability management, MDM, etc. About us We're a diverse group of visionary innovators who provide trading and workflow automation software, high-value analytics, and strategic consulting to corporations, central banks, financial institutions, and governments. Founded in 1999, we've achieved tremendous growth by bringing together More ❯
Job title: ION Support Engineer Client: Investment Bank Rate: Up to £550 p/d (inside IR35) Duration : 6 month rolling Location: London/Hybrid Contract Role: Trading Application Support Engineer (6 months, Inside IR35 - £550/day) I'm working with a leading global investment bank to hire an experienced Trading Application Support Engineer for a … sits within their Core Markets technology function, providing crucial support across Fixed Income, Equity, and Derivatives trading. Key Responsibilities Provide second- and third-line support across a range of trading systems for equities, credit, Fixed Income, and derivative products (including bonds, CDS, IRS, and currency swaps). Cover support shifts between 7am-7pm (early, normal, and late patterns), with …/regression testing with business stakeholders. Create, update, and maintain documentation across business, support, and maintenance procedures. Required Skills & Experience Degree educated or equivalent professional experience. 5+ years supporting trading platforms in a Front Office or high-pressure financial markets environment. Strong product knowledge across Fixed Income, Equities, and Derivatives, including IRS, CDS, ETFs, futures, options, and convertible bonds. More ❯
ION/Marketview Developer required by a global banking organisation seeking to increase their footprint in London. We are supporting the programme to grow our client's UK business, which currently utilises the ION suite for fixed income trading. This role will be part of an effort to modernise all aspects of the stack, scale up and deepen … integration with proprietary platforms. Candidates should have demonstrable experience developing the custom components of the ION suite - this is an essential requirement and will be tested - but the client has additional requirements for Java engineers with core or custom Marketview experience. More ❯
ION/Marketview Business Analyst required by a global banking organisation seeking to increase their footprint in London. We are supporting the programme to grow our client's UK business, which currently utilises the ION suite for fixed income trading. This role will be part of an effort to modernise all aspects of the stack, scale up and … deepen integration with proprietary platforms. Candidates should have demonstrable experience working on the custom components of the ION product set and deep knowledge of FX/Rates trading. More ❯
