FX Application Infrastructure Engineer, VIce President
Confirmed on the employer's own hiring board on Oct 28, 2026. First seen by Alion on Oct 16, 2026. Citi scores A on the Alion truth index.
Position Overview
FX Technology is focused on delivering IT solutions to the FX Sales & Trading business. We have around 400 people with the core of our development effort based in the financial hubs of London, New York and Singapore where we face off directly to the trading desks. Our core strength is providing the technical expertise and software development skills that directly affect the ability of our business to generate revenue and several of our client facing applications such as Citi FX Velocity and FX Click are leaders in their respective markets. We are committed to hiring the brightest and best technical experts and in return can offer roles with direct business interaction on projects from electronic and algorithmic trading to grid based computation of real-time risk metrics.
The FX Technology team is looking for a Senior-level Infrastructure and Middleware Engineer based in Mississauga, Canada to work within the FX Technology group focusing on the hardware, application infrastructure, connectivity, middleware considerations of our FX platforms and to serve as a local Lead. The successful candidate will be responsible for designing, maintaining and supporting the application infrastructure used by FX Technology. The candidate will have experience of working in a fast-paced environment and managing the design, build, deployment, support of eTrading and other FX applications in all environments.
The candidate will report into the FX Infrastructure Lead located in the UK and interact with development teams as well as our business and technology teams located across the globe.
Responsibilities
- Provide technical guidance and expertise to developers and engineers in the areas of Messaging Middleware, Linux, Windows, server hardware, network connectivity, performance engineering, web middleware for all FX applications.
- Coordinate major replatforming, re-engineering and migration initiatives across all FX applications
- As part of a team of Infrastructure engineers, provide guidance and direction to other members in your capacity of Lead Engineer
- Liaise with multiple application teams and infrastructure teams to translate application requirements into an infrastructure design and then track the deployment of the agreed solutions.
- Performance engineering: measure, identify opportunities to improve performance and efficiency through hardware tuning, topology changes, application design.
- Some L3 Support for our FX eTrading platforms in particular for OS/connectivity/middleware issues.
- Some project management duties on small-scale projects.
- Input into application releases that have dependencies on infrastructure changes.
- Work in concert with the business, development teams and Production Support to investigate issues and prevent production defects.
- Work in collaboration with DevOps Engineers to support DevOps initiatives.
Requirements
Experience / Background
- Extensive experience and knowledge supporting these Messaging Middleware technologies: Solace, TIBCO EMS or TIBCO Rendezvous either as a Systems Engineer or Application Developer
- Extensive Expertise (sufficient to act as an FX-wide Subject-Matter Expert) in at least one of these other areas: Linux, TCP/IP Networking, Low-latency Performance Engineering, Firewalls, Server hardware
- Experience in at least one of the following programming languages: Java, C++, .NET
- Experience with Distributed Systems: Scaling, Fault-Tolerance, Load-Balancing, Networking, Security, etc.
- Experience in at least one of the following scripting languages: Bash/Bourne Shell, Python, Perl
In addition, the following would be an advantage:
- Experience with high-volume low-latency highly available IT systems, understanding of their architecture and SLAs
- Any hands-on experience with Linux administration
- Any general infrastructure knowledge or hands-on skills in the areas of Message-Oriented Middleware (Solace, Tibco EMS, Tibco Rendezvous, Aeron) and Networks
- The candidate should show a clear understanding of the banking environment and have a strong interest in financial markets.
Personal Characteristics
- Open-minded team player, good at building networks and leveraging resources
- High attention to detail
- Willing to take ownership of initiatives and drive them to completion
- Proactive, and able to work independently
- Excellent analytical skills
- Results-oriented and client-focused
- Ability to work under pressure, prioritize work and well organized
Skills Required
- Messaging Middleware technologies: Solace, TIBCO Rendezvous, TIBCO EMS, TIBCO FTL, Aeron
- Solid knowledge of basic networking concepts.
- At least one programming language: Java (preferred), C++ or .NET
- Shell scripting and Python/Perl/Ruby/Groovy scripting
In addition, the following would be an advantage:
- Application server technologies: Tomcat, Apache, Weblogic
- SSL/TLS cryptographic protocols
- Any UI development of custom monitoring or management tools
- General knowledge, interest and skills around infrastructure technologies (Linux, Networks, Storage…)
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Job Family Group:
Technology------------------------------------------------------
Job Family:
Applications Development------------------------------------------------------
Time Type:
Full time------------------------------------------------------
Primary Location Full Time Salary Range:
$120,800.00 - $170,800.00------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Automated Processing and AI
We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.
Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.
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This job opening is for an existing job vacancy.
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