Citi

Citi

Posted via Workday

Equities Technology (Low Latency Developer) - JAVA OR C++

Posted Sep 29, 2026

Role at a glance

Job function
Software Engineering & IT Backend Engineering
Salary
Not Disclosed
Location
Belfast United Kingdom, United Kingdom
Work arrangement
Hybrid
Employment
Full-time
Experience
Significant years of working knowledge of Java OR C++

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Role Summary

AI-generated

This role develops and supports Citi’s Global Market Data platform for the Global Equities business in EMEA. The work includes evolving platform functionality for low-latency market data and supporting existing applications and clients.

What You'll Do

  • Develop new functionality for the Global Market Data platform.
  • Design and develop platform systems and functionality, including implementation and enhancement of systems.
  • Support deployed market data systems in conjunction with Equities Production Support teams.
  • Coordinate exchange-mandated changes affecting the Global Market Data platform.
  • Improve application functionality in response primarily to the Electronic Trading Desk.
  • Support existing Market Data applications and clients.

Generated from the employer's posting. Verify important details before applying.

View full posting

Qualifications

Required: significant years of working knowledge of Java or C++; ability to meet tight deadlines and work effectively in a team; ability to diagnose and troubleshoot real-world issues with floor traders, production support, and others; communication appropriate to the people involved; and a good understanding of multicast/TCP/IP network protocols.

Required

  • Significant years of working knowledge of Java or C++
  • Ability to work to tight deadlines as part of a team
  • Ability to work with floor traders, production support, and others to diagnose and troubleshoot real-world issues
  • Ability to work effectively as part of a larger team and communicate appropriately with different people
  • Good understanding of network protocols, including Multicast/TCP/IP

Preferred

  • Working experience of Microservices architecture (a big plus)
  • Knowledge and experience building an ultra-low latency market data platform (a big plus)
  • Low Latency Market Data skills
  • Experience in algorithmic trading and electronic trading business or technology (beneficial, not essential)
  • Experience working in the finance industry (beneficial, not essential)
  • Unit testing, code reviews, and following agile methodology
  • JIRA, Confluence, GIT, and uDeploy
  • Low latency, network concurrency, multicast, and server configuration knowledge

Original job description

Content provided by the employer

Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. We enable clients to achieve their strategic financial objectives by providing them with cutting-edge ideas, best-in-class products and solutions, and unparalleled access to capital and liquidity.


What We do / The Team

  • Development of the Global Market Data platform to meet the requirements of the Global Equities business.
  • Support for deployed market data systems in conjunction with Equities Production Support teams.
  • Implementation and enhancement of new/altered systems.
  • Working with a business group who are committed to technology and receiving low latency market data.
  • Design and development of the Global Market Data platform in EMEA.
  • Design and development of system functionality.
  • Coordination of Exchange mandatory changes as they pertain to the Global Market Data platform.
  • Application functionality improvements driven primarily by the Electronic Trading Desk.
  • Support for existing Market Data applications and clients.

Role Overview/What will you do:

  • On-going development of new functionality for the Global Market Data platform. The Global Market Data platform is evolving rapidly, offering many opportunities to exercise and improve technical skills in the area of low latency. The role also offers the opportunity to learn the Equity Trading business.

Key Skills and Experience required:

  • Significant years of working knowledge of Java OR C++
  • Working experience of Microservices architecture is a big plus.
  • Knowledge and experience in building ultra-low latency market data platform will be a big plus.
  • Ability to work to tight deadlines as part of a team.
  • Ability to work with floor traders, production support and others in diagnosing and troubleshooting real-world issues.
  • Candidate must be able to work effectively as part of a larger team and be able to communicate at an appropriate level depending on the types of people involved.
  • Good understanding of Network Protocols – Multicast/TCP/IP.

Any Beneficial / Nice to have skills and experience:

  • Low Latency Market Data Skills.
  • Experience of algorithmic trading and electronic trading business or technology would be beneficial, but not essential.
  • Experience of working in the finance industry would be beneficial but not essential.
  • Sound programming approach with unit test testing, code reviews and following agile methodology.
  • JIRA, Confluence, GIT, uDeploy all beneficial to know.
  • Low latency, network concurrency, multicast, and server configuration knowledge are additional useful skills. Including configuration of 10GB Network Interfaces such as SolarFlare using OnLoad.
  • Knowledge of Equities products (stock, futures, options, swaps etc) would be beneficial.
  • Knowledge of developing database code and processes in KDB.

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

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

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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.

 

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Citi

About the company

Citi

Large Enterprise

Citi is a global financial services corporation that offers a wide range of financial products and services, including consumer banking, credit, investment banking, and wealth management. With a presence in nearly 100 countries, Citi serves millions of customers, from individuals and small businesses to large corporations and governments. The company is dedicated to innovation and sustainability, actively working to support economic growth while addressing environmental and social challenges. Citi’s commitment to providing exceptional service and fostering diverse talent makes it a prominent choice for students aspiring to build a career in finance and banking.