At a Glance
- Tasks: Engineer cutting-edge electronic trading infrastructure and drive innovation in global finance.
- Company: Join Citi, a leading global financial services company with a collaborative culture.
- Benefits: Enjoy competitive salary, 27 days leave, private medical care, and hybrid work options.
- Other info: Dynamic environment with mentorship and continuous learning opportunities.
- Why this job: Make a real impact on the future of finance while growing your career.
- Qualifications: Deep knowledge of Linux, Python, and systems architecture required.
The predicted salary is between 60000 - 80000 € per year.
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.
Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real‑world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.
About the Position: We are looking for an industry‑wide Senior Systems Architect (Infrastructure) who can provide leadership and direction for Change‑The‑Bank (CTB) electronic trading infrastructure initiatives covering all technologies for Rates. The role sits within Citi’s Global Markets: High Performance Architectures – Infrastructure (HPAi) group. This team is responsible for all electronic trading infrastructure architecture across all markets globally for the firm. It is composed of low latency subject matter experts, systems architects and an aligned initiative management function. Technology is key to our business; this role will require you to drive innovation and technology adoption in a large, multi‑faceted and complex environment.
What You Will Do (but Not Limited To): Reporting to the head of HPAi, the Systems Architect will be responsible for ensuring best‑in‑breed technology architecture and engineering are in alignment with business requirements. This will be done in collaboration with the relevant teams and stakeholders. You will actively collaborate with all parties, steer other technology organizations directly or through influence, and love rolling up your sleeves and working as an individual contributor.
The Technologies:
- Compute (Linux, CoreOS, Tuning, kernel bypass technologies, core dump analysis)
- Network (R&S, cut‑through, Multicast, SDN, BGP, L1‑L3, PCAP analysis)
- HPC File Systems (Lustre, GPFS, Weka, DDN, Ceph)
- Interconnects (InfiniBand, Slingshot, PCIe, NVLink, UALink, UPI, RoCE)
- HW (Server, FPGA, GPU, Memory, Cache, over‑clocking, cooling, ASIC, Quantum, NUMA)
- DevOps (OpenShift, Kubernetes, CI/CD, Python, Perl, Shell)
- Programming (C, C++, Java, Rust, VHDL, Verilog)
- Time Sync (PTP, NTP, GPS, White Rabbit, SyncE)
- Wave (RF, Millimeter, Microwave, DWDM, Photonics)
- Storage (I/O, NAS, SAN, Object Store, SDS)
- Database (relational, columnar, graph, NoSQL, architecture, tuning)
- Monitoring (SPANs, TAPS, OEO, Packet Brokers, Corvil, SNMP, FIX, Logs, ELK, Open Telemetry, Grafana, Prometheus)
- Messaging (TibRV, Solace, Aeron, ZeroMQ, Kafka, Multicast, Market data, Tibco, Exegy/Vela)
- Load Balancers (HW, SW)
- Security (Firewalls, PKI, TLS, IDS, Optical Encryption, AD, LDAP)
- Connectivity (WAN, Lucera, cross‑connects, ECX, venue, client)
- Colo / Datacenter (Power, Space, Cage, Rack, Cabinet, Design)
- Excel (for advanced frameworks, data analysis)
Required:
- Deep knowledge of operating system fundamentals – hyper focus on Linux (REL, CoreOS)
- Understanding of OSI model and TCP/UDP network protocols
- Experience with Python and data libraries
- Fluency with the Unix command line and shell scripting
- Practical experience with modern Linux systems and systems programming concepts like C, IPC mechanisms, virtual memory, and process life cycle
- Strong troubleshooting skills and knowledge of profiling/debugging tools such as gdb, perf, DTrace, SystemTap
- Can understand, interpret, and improve application performance via system tuning
- Thorough understanding of modern computer architecture – modern x86, AMD and Intel cache hierarchies as an example
- Kernel‑bypass technology knowledge (such as Solarflare OpenOnload / TCPDirect / ef_vi, RoCE, DPDK)
- Prior experience in a similar Site Reliability Engineering, DevOps, distributed computing, systems engineering/administration
- Ability to context‑switch to work on several projects at once
- Knowledge of JIRA, SCRUM, Sprints
- Low Latency Trading – Rates and Cross Markets domain knowledge would be highly beneficial
The Details: Ingress/plan/execute/manage technical initiatives to make our electronic trading systems faster, more adaptable, stable and maintainable aligned to HPAi standards. Communicate ideas, requirements, and results across disparate teams. This position will support technical populations (Rates), partnering with leaders to understand their challenges and design and execute solutions to solve them. Communicate business and IT requirements to external vendors and internal technical teams. To succeed in this role, you must enjoy working independently and collaborating, being a hands‑on contributor, learning on the fly and embrace change – rapid pace. You must be able to understand full‑stack electronic trading technologies and engage effectively in a very technical manner with other SMEs, systems architects, the business (at times), Markets‑Tech, and enterprise infrastructure organizations (CTI/CISO).
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, 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.
Education: Degree educated ideally in a computer science or engineering field or experience operating in a similar role.
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.
Infrastructure Architect - Low Latency Engineering (Rates eTrading Tech) - Citi in London employer: Jobs via eFinancialCareers
Citi is an exceptional employer that fosters a dynamic and inclusive work culture, offering employees the chance to make a significant impact in the world of finance. With a commitment to professional growth through mentorship and continuous learning, as well as a competitive benefits package including generous annual leave and private medical care, Citi empowers its team members to thrive in a collaborative environment. Located in a global financial hub, this role provides unique opportunities to engage with cutting-edge technology and drive innovation in electronic trading systems.
StudySmarter Expert Advice🤫
We think this is how you could land Infrastructure Architect - Low Latency Engineering (Rates eTrading Tech) - Citi in London
✨Tip Number 1
Network like a pro! Reach out to current or former employees at Citi on LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.
✨Tip Number 2
Prepare for the interview by brushing up on your technical skills. Make sure you can talk confidently about low latency systems and the technologies mentioned in the job description. We want you to shine!
✨Tip Number 3
Show your passion for innovation! During interviews, share examples of how you've driven tech adoption or solved complex problems in previous roles. This will demonstrate that you're a perfect fit for Citi's forward-thinking culture.
✨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 Infrastructure Architect - Low Latency Engineering (Rates eTrading Tech) - Citi in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Infrastructure Architect role. Highlight your experience with low latency systems and any relevant technologies mentioned in the job description. We want to see how your skills align with what we're looking for!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you're passionate about this role at Citi and how your background makes you a perfect fit. Don’t forget to mention any specific projects or achievements that relate to the job.
Showcase Your Technical Skills:Be sure to highlight your technical expertise, especially in areas like Linux, Python, and system architecture. We love seeing candidates who can demonstrate their knowledge of the technologies we use, so don’t hold back!
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining our team at Citi!
How to prepare for a job interview at Jobs via eFinancialCareers
✨Know Your Tech Inside Out
Make sure you have a solid grasp of the technologies mentioned in the job description, especially Linux, networking protocols, and low latency systems. Brush up on your knowledge of tools like Python and any relevant debugging tools. Being able to discuss these confidently will show that you're not just familiar with them, but that you can apply them effectively.
✨Demonstrate Problem-Solving Skills
Prepare to showcase your troubleshooting skills during the interview. Think of specific examples where you've solved complex problems in previous roles, particularly in high-pressure environments. This could involve discussing how you improved system performance or resolved critical issues in electronic trading systems.
✨Engage with Real-World Scenarios
Be ready to discuss real-world challenges related to electronic trading infrastructure. Consider how you would approach making systems faster and more adaptable. This shows that you understand the business context and can think critically about how technology impacts finance.
✨Show Your Collaborative Spirit
Citi values teamwork, so be prepared to talk about how you've worked with cross-functional teams in the past. Highlight experiences where you influenced others or collaborated on technical initiatives. This will demonstrate that you can thrive in a collaborative environment while also being a hands-on contributor.
