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VP Low-Latency Electronic Trading Java Data Systems Engineer

Citi -
Mississauga, ON

Apply Now

Job details

Full-time
$120,800–$170,800 a year

Qualifications

Rust (programming language)
Computer Science
Engineering
System design
Test automation
Java
C++
Bachelor's
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

Citi’s Equities Technology organization is seeking a Low‑Latency Java Data Systems Engineer to join the Equities Electronic Execution technology team. This role is focused on building and operating the data‑plane foundations of Citi’s electronic trading ecosystem.

This role focuses on the low‑latency data plane that supports execution, routing, internalization, connectivity, and market data systems, providing event transport, sequencing, fan‑out, back‑pressure, replay, and latency‑controlled data distribution.

The engineer will work on high‑throughput, low‑latency data systems that process order lifecycle events and market data events with strict correctness and performance guarantees. This is not a trader‑facing or strategy‑implementation role; it is a core data‑systems engineering role, where Java is used as a low‑level data‑plane runtime.

The role requires close collaboration with quantitative research, product, infrastructure, production support, QA, and global delivery teams, supporting platforms deployed across NAM, EMEA, and APAC.

Responsibilities:

Design and build low‑latency Java data pipelines that process order lifecycle and market data events with strict guarantees around ordering, sequencing, determinism, and replay.
Develop GC‑sensitive, data‑plane Java systems, using off‑heap memory, binary protocols, and low‑contention concurrency to achieve predictable latency.
Implement resilient fan‑out, back‑pressure, and recovery mechanisms to support multiple downstream consumers without compromising latency or correctness.
Work directly with FIX and exchange‑driven message flows, handling sequencing gaps, snapshot/replay, session lifecycle, and state reconstruction.
downstream), including p99/p999 behavior and jitter.
Integrate real‑time and near‑real‑time event streams into KDB+ / q‑based data platforms for analytics, TCA, and regulatory use cases.
Build deterministic test and validation frameworks (replay, fault injection, regression detection) and contribute to CI/CD pipelines with performance and correctness gating.

Qualifications:

Minimum 7 years of experience with strong technical knowledge and expertise in Low latency Java, C++ or Rust.
Hands-on experience with market data and/or order lifecycle event processing.
Solid working knowledge of the FIX protocol and exchange connectivity patterns.
Experience in integrating real-time systems with KDB+/q or equivalent time series platforms.
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.

Education:

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

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.

This job opening is for an existing job vacancy.

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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