Electronic Trading Core Developer

06500 Citigroup Global Markets Limited; Greater London; Hybrid; GBP 65,000 - 85,000; Full time

Job summary

A leading global bank in Greater London is seeking a Java Developer to work on electronic trading systems. You will focus on low latency development and the integration of functions within Capital Markets. The ideal candidate has expertise in Java frameworks, a strong educational background, and excellent communication skills. This role offers a hybrid working model and competitive benefits including annual leave, bonus, and medical care.

Benefits

27 days annual leave

Discretionary performance-related bonus

Private Medical Care

Life Insurance

Pension Plan

Paid Parental Leave

Employee discounts

Learning and development resources

Responsibilities

• Integrate functions to meet goals and enhance processes across Capital Markets.
• Provide expertise in Java low latency development.
• Consult with end users for system specifications.

Skills

Subject Matter Expert in Applications Development

Java framework expertise

Knowledge of the JVM and Linux

TCP and IP network protocol knowledge

Performance assessment and tuning

Design and architectural skills

Project implementation experience

Strong communication skills

Diagrammatic documentation skills

C++ background (preferred)

Relationship building skills

Education

Bachelor's degree or equivalent

Job description

Overview

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

• In the world of Capital Markets electronic trading, performance, agility, and reliability are crucial; latency beyond the micro‑ or even nano‑second realm just won’t cut it!
• A core team of expert engineers within Citi have developed a framework, toolset and collection of components for building self‑healing, scalable, high performance, asynchronous, event‑driven, Java Microservices based solutions.
• This framework, known as Ambrosia, has solved all the hard problems of failover, high availability, performance and scalability, so that application developers can focus on those pieces of the puzzle that solve the business problem and take performance to the next level.
• Ambrosia is a core framework, toolset and collection of components for building self‑healing, scalable, high performance, asynchronous, event‑driven, Java Microservices based solutions.
• We build microservices based event sourcing systems on a low latency in‑house framework. Response times in the 10 microsecond to 100 microsecond range.

Role Overview / What you will you do :

• Work on the integration of functions to meet goals, deploy new products, and enhance processes across the Capital Markets asset classes.
• Provide world class expertise in area of Java low latency development.
• Utilize advanced knowledge of supported main system flows and comprehensive knowledge of multiple areas to achieve technology goals.
• Consult with end users to identify system function specifications and incorporate into overall system design.

What you will bring to the role

Skills and Experience

• Demonstrated Subject Matter Expert (SME) in area of Applications Development, preferably in electronic and algorithmic trading systems.
• Passion for coding excellent, commercial grade, mission critical Java frameworks based on event sourcing microservices.
• Complete knowledge of modern Java, the JVM, the Linux Operating system, system calls and Kernel.
• Knowledge of TCP and other IP based network protocol technologies including hardware accelerated kernel bypass Solarflare OpenOnload.
• Performance assessment and targeted tuning.
• Design and architectural elegance.
• Experience in implementing projects.
• Great communicator with high EQ.
• Ability to occasionally produce clear diagrammatic documentation and model key aspects in UML sequence diagrams.
• May have a background in C++ before moving to Java.
• Relationship and consensus building skills.

Education / Qualifications

• Bachelor’s degree / University degree or equivalent experience in a similar role.

This job description provides a high‑level review of the types of work performed. Other job‑related duties may be assigned as required.

What we’ll provide you

By joining Citi London, 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 discretionary 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

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.