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For Companies At a Glance
- Tasks: Design and maintain a high-performance calculation engine for large-scale risk calculations.
- Company: Join Citi, a leading global financial services company with innovative tech solutions.
- Benefits: Competitive salary, diverse work environment, and opportunities for professional growth.
- Why this job: Make a real impact in finance by optimising cutting-edge technology for global markets.
- Qualifications: Proficient in Java, with experience in distributed systems and cloud platforms.
- Other info: Collaborative team culture focused on continuous learning and mentorship.
The predicted salary is between 48000 - 84000 £ per year.
Team Overview
XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs. Our team owns multiple Java Spring Boot Services that execute, partition, and track quantitative risk graphs/trades in a distributed environment. These graphs can fail due to their complexity and our system must adapt quickly to these failures to provide a seamless experience for clients. XiP Compute Services are deployed onto OpenShift and Amazon’s Elastic Kubernetes Service (EKS). An important initiative in 2025 will be onboarding Google’s Kubernetes Engine to further expand our coverage. Our system scales on-demand, and we can run up to tens of thousands of replicas of our services across all asset classes.
Role Overview
We are seeking a Senior Engineer to fill the role of ‘Applications Development Technology Lead Analyst’ on the XiNG large scale distributed calculation platform (XiP). In this role you will design, build, and maintain the calculation engine at the heart of the XiP platform. This engine is responsible for c. 0.5 billion risk & suitability calculations at Citi every day. A single customer run compresses 17 million minutes of compute into a single 90-minute execution. Run on hundreds of thousands of pods across the entire XiP platform every day this calculation engine is both highly performant and rapidly changing to support new scenarios, technologies, and infrastructure.
Responsibilities
- Take part of the shared responsibility for the long-term strategic direction of the XiP Calculation Engine.
- Apply your experience and skills to develop the future versions of the calculation engine, making it faster, utilizing resources better, and scaling to even greater sizes.
- Add new features without impacting performance of the platform in undesirable manner.
- Solve hard problems like transferring small amounts of data to a huge number of machines.
- Serve as advisor or coach to team members, allocating and overseeing work.
- Mentor and guide mid-level developers, providing technical advice, code reviews, and career development support.
- Allocate tasks based on skill sets and project priorities, ensuring balanced workloads and timely delivery.
- Foster a collaborative and growth-oriented team environment, encouraging best practices and continuous learning.
- Implement changes and improvements to Citi's Risk Calculation Engine, including analyzing and designing improvements to the distribution mechanisms of the engine.
- Lead the design, development, and implementation of enhancements to the Risk Calculation Engine, focusing on optimizing its distribution mechanisms.
- Analyze current parallelization strategies and identify opportunities to further improve efficiency, scalability, and throughput.
- Operationally support the optimization of Risk calculations by examining and providing SME level insight into the distributed execution of extremely large calculations.
- Monitor and analyze the distributed execution of large-scale risk calculations, identifying performance bottlenecks and inefficiencies.
- Provide subject matter expertise to guide operational improvements, leveraging deep technical knowledge to recommend and implement optimizations that enhance calculation speed and resource utilization.
- Plan, coordinate, and execute strategic changes to the engine to reach the next scaling milestone.
- Develop and manage strategic initiatives aimed at scaling the Risk Calculation Engine to meet future business demands.
- Coordinate with stakeholders to ensure that all scaling efforts are aligned with customer needs.
- Provide specialized customer support to optimize and improve large, distributed calculations.
- Act as a primary point of contact for clients to address issues and optimize inefficiencies that arise during distributed workload execution.
Qualifications
- Multiple years professional software development experience with Java.
- Solid experience with Java frameworks (e.g., Spring, Spring Boot, Quarkus).
- Experience designing, building, and maintaining large-scale, distributed systems.
- Experience with RESTful API design and implementation.
- Strong understanding of object-oriented programming and design patterns.
- Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus.
- Exposure to cloud platforms (e.g., AWS, Azure, GCP) and containerization (e.g., Docker, Kubernetes) is desirable.
- Experience with unit testing, integration testing, and test automation frameworks (e.g., JUnit, Mockito).
- Experience working in Agile/Scrum development environments.
- Practical experience with Python for scripting, automation, or data processing tasks.
- Experience with CI/CD pipelines and DevOps practices is a plus.
Education
Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
Accessibility and Equal Opportunity
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.
Senior Software Engineer, CalcGraphs - Vice President in London employer: Citigroup, Inc.
Contact Detail:
Citigroup, Inc. Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer, CalcGraphs - Vice President in London
✨Tip Number 1
Network like a pro! Reach out to current employees at Citi or in similar roles on LinkedIn. A friendly chat can give you insider info and might even lead to a referral, which is always a bonus!
✨Tip Number 2
Prepare for the technical interview by brushing up on your Java skills and distributed systems knowledge. Practice coding challenges and be ready to discuss your past projects in detail. We want to see how you think and solve problems!
✨Tip Number 3
Showcase your passion for continuous learning! Mention any recent courses or certifications you've completed, especially those related to cloud platforms or containerization. It shows you're committed to staying ahead in the tech game.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining the team at Citi.
We think you need these skills to ace Senior Software Engineer, CalcGraphs - Vice President in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that match the job description. Highlight your Java expertise, experience with distributed systems, and any relevant cloud platform knowledge. We want to see how you can contribute to our team!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about the role and how your background aligns with our mission at StudySmarter. Be sure to mention specific projects or achievements that showcase your abilities.
Showcase Your Problem-Solving Skills: In your application, don’t just list your technical skills; share examples of how you've tackled complex problems in the past. We love seeing how you approach challenges, especially in high-stakes environments like financial markets.
Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of your application and ensures you’re considered for the role. Plus, it’s super easy to do!
How to prepare for a job interview at Citigroup, Inc.
✨Know Your Tech Stack
Make sure you’re well-versed in Java and its frameworks, especially Spring and Spring Boot. Brush up on your knowledge of distributed systems and RESTful API design, as these are crucial for the role. Being able to discuss your past experiences with these technologies will show that you’re ready to hit the ground running.
✨Showcase Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous projects, particularly those involving large-scale calculations or distributed systems. Highlight how you approached these problems, the solutions you implemented, and the outcomes. This will demonstrate your ability to think critically and adapt to complex scenarios.
✨Understand the Business Context
Familiarise yourself with Citi's operations and the financial markets they serve. Understanding the impact of your work on clients and the business will help you articulate how you can contribute to the XiP platform’s success. It shows that you’re not just a techie but also someone who understands the bigger picture.
✨Be Ready to Collaborate
Since this role involves mentoring and working closely with other engineers, be prepared to discuss your experience in team settings. Share examples of how you’ve fostered collaboration and supported your colleagues in achieving project goals. This will highlight your leadership potential and your commitment to a growth-oriented team environment.
