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Low Latency E-Trading Software Engineer

Citi -
London

Apply Now

Job details

Full-time

Benefits

Annual leave
Company pension
Employee assistance programme
Private medical insurance
Employee discount
Life insurance

Qualifications

Rust (programming language)
Computer Science
Engineering
System design
Java
C++
Bachelor's degree
Continuous integration
Agile
Communication skills

Full job description

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

Discover your future at Citi

Job Overview

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Citi's Equities Technology organization is seeking a Software Engineer to join the Equities Electronic- Execution (Electronic Trading) technology team. The person in this role will be responsible for the design, development, and delivery of Citi's next-generation low-latency execution platform. This platform encompasses critical components including Algorithmic Trading, Smart Order Routing (SOR), Dark Pool & Internalization engines, Low latency Client & Exchange Connectivity, and high-throughput market data processing.

The senior engineer will collaborate with a cross-functional team of developers and work closely with product development, quantitative research, technology infrastructure, production support and QA teams. Close alignment with the global strategy and cross-regional delivery is a key aspect of this role.

Responsibilities

Core Development: Design, development and maintenance of high-performance, low-latency electronic execution systems
Product Collaboration: Partner with traders, quant researchers, and clients to understand their needs and translate them into innovative product features and enhancements — including execution performance improvements, new liquidity sources, and DMA capabilities.
Testing: Continuously improve and maintain testing frameworks, development tools, and environments to ensure platform reliability and performance at scale.
AI-Powered SDLC: Leverage Citi's suite of AI-powered development tools throughout the Software Development Life Cycle (SDLC) to enhance productivity, code quality, and innovation.
Agile & CI/CD: Contribute to and champion Agile development practices and Continuous Integration/Continuous Delivery (CI/CD) processes with a focus on shift-left testing and accelerated release cycles.
Platform Support & Enhancement: Build and maintain common solutions for trading platform monitoring, trade reconciliation, application recovery, and other essential support functions.

Qualifications

Strong technical knowledge and expertise in Low latency Java and Rust.
Prior experience in developing electronic trading platforms in a global financial institution or equivalent environment.
Strong understanding of automated testing techniques and quality engineering practices.
Solid understanding of Agile methodologies and Continuous Integration processes.
Familiarity with low-latency system design, including performance optimization, concurrency, and high-throughput architecture.
Ability to prioritize multiple tasks, set goals, and meet deadlines in a fast-paced, globally distributed environment.
Excellent communication skills with a demonstrable ability to present and grasp complex concepts in a multicultural, cross-regional environment.
Knowledge of regional exchange microstructure and regulatory regimes.
Knowledge of C++ would be an advantage
Prior experience in managing small teams is a plus.

Education

Bachelor's degree / University degree in Computer Science, Engineering, or a related field, or equivalent professional experience.

What we’ll provide you

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

27 days annual leave (plus bank holidays)
A discretional annual performance related bonus
Private Medical Care & Life Insurance
Employee Assistance Program
Pension Plan
Paid Parental Leave
Special discounts for employees, family, and friends
Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

Apply Now

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