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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Java Algo Developer, Equities, Senior Vice... - **Company:** Citigroup, Inc. - **Location:** Jersey City, NJ, United States - **Experience:** Expert - **Salary:** $176,720.0 - $265,080.0 - **Contract:** Franchise - **Skills:** Query Performance, Java (Programming Language), Agile Methodology, Algorithmic Trading, Data Analysis, Big Data, C Sharp (Programming Language), Code Review, Continuous Delivery, Continuous Integration, Software Debugging, Programming Tools, Memory Management, Java Virtual Machine (JVM), Software Engineering, Data Streaming, Systems Architecture, Load Balancing, Concurrency, KDB+, Low Latency, Data Management - **Published:** June 14, 2026 - **Apply:** https://www.juju.com/job/00000000g84ee3 ## About the Role + Minimum 8+ years of hands-on experience in software development with a strong focus on high-performance, low-latency systems. + Proven expertise in **KDB+ (Q language)** development, including practical experience in scaling, load-balancing, resilience, and optimizing query performance for large datasets. + Strong technical knowledge and expertise in **Java** (or C#) for building critical, low-latency execution platforms, including deep understanding of JVM internals, concurrency, and memory management. + Experience designing and developing automated trading platforms in Equities or other similar financial domains. + Solid understanding of financial market protocols like FIX, and practical experience handling order and market datasets. + Demonstrable experience with testing frameworks, Agile methodologies, and Continuous Integration/Continuous Delivery (CI/CD) processes. + Ability to prioritize multiple tasks, set goals, and meet deadlines in a fast-paced environment. + Excellent communication skills with a demonstrable ability to present and grasp complex technical and business concepts. + Preferred background in Markets Electronic Trading or Market Making domains. Education: + Bachelor's degree/University degree or equivalent experience + Master's degree preferred ## Description We are seeking a highly skilled and experienced Algo Trader Senior Developer to contribute to the strategic analytics backbone and low-latency execution platforms supporting our Equities Electronic Trading product. This is a senior level position responsible for the design, development, and optimization of critical application systems and programs, working in coordination with the Citi Equities Electronic Trading Technology team. The overall objective of this role is to drive technical implementation and innovation across our analytics and data subsystems, as well as the core trading engine, while providing technical leadership., + **Lead technical design discussions and conduct rigorous code reviews** to ensure high quality, performance, and adherence to architectural standards for critical trading systems. + Design, develop, and optimize high-performance, low-latency applications utilizing both KDB+/Q and Java for our Equities Electronic Trading platform. + Implement and maintain business-critical high-frequency systems that process market data, generate analytics, and facilitate trading operations. + Contribute to platforms enabling efficient data management, sophisticated analytics generation, and robust trading functionalities. + Partner with product development, quantitative researchers, and other technology teams to deliver new trading capabilities and enhance existing systems. + **Drive continuous improvement initiatives** in testing frameworks, development tools, and deployment processes for low-latency and high-throughput environments. + Resolve complex technical challenges through in-depth analysis of business and system processes, adhering to industry best practices and architectural blueprints. + Apply advanced knowledge of system architecture, data flow, and development standards for coding, testing, debugging, and implementation. + Build common solutions for trading platform monitoring, trade reconciliation, and application recovery. + Provide technical guidance and mentorship to other developers, fostering best practices in high-performance application development. + Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency. ## Related Videos - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Microservices architecture as a key element in building trading systems for global finance markets](https://www.wearedevelopers.com/videos/1196-microservices-architecture-as-a-key-element-in-building-trading-systems-for-global-finance-markets) - [Swapping Low Latency Data Storage Under High Load](https://www.wearedevelopers.com/videos/746-swapping-low-latency-data-storage-under-high-load) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Unleash the power of 5G in your code: transform your apps](https://www.wearedevelopers.com/videos/1567-unleash-the-power-of-5g-in-your-code-transform-your-apps) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) ## Related Articles - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Highest Paying Tech Companies in Europe](https://www.wearedevelopers.com/magazine/162-highest-paying-tech-companies-in-europe) - [Java Basics](https://www.wearedevelopers.com/magazine/122-java-basics)