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About the Role

This position is responsible for designing, developing, and optimizing our mission-critical, high-throughput FX real-time risk system. As a Senior Software Engineer, you will leverage your deep technical expertise to drive the architectural evolution of low-latency processing systems, solve complex engineering challenges, and provide technical guidance to the engineering team. In this front-office facing role, you will collaborate closely with the FX Options Trading desk, translating business needs into robust, scalable, real-time software solutions.

Responsibilities

Design, implement, and optimize critical FX real-time risk infrastructure, ensuring high performance, minimal latency, and high availability.
Drive key technical deliverables and champion code quality, modern development practices, and robust system design patterns within the team.
Provide expert architectural input and contribute to the technical strategy as we modernize and onboard to the bank's strategic risk platform.
Collaborate with engineering partners to establish design standards, conduct deep code reviews, and provide technical mentorship to mid-level and junior engineers.
Serve as a key technical Subject Matter Expert (SME) for the FX Options Trading desk, trading leadership, and risk managers, translating quantitative and trading requirements into concrete software designs.
Act as a dependable technical partner to front-office stakeholders, offering advanced analysis and fast, decisive troubleshooting for complex real-time system behaviors or critical production incidents.
Appropriately assess risk when technical and architectural decisions are made, ensuring all solutions adhere to corporate security, scalability, and stability standards to safeguard Citigroup, its clients, and assets.
Contribute hands-on as a primary engineer utilizing our modern tech stack: Core Java (multi-threading, concurrency, memory optimization), CouchbaseDB, Kafka, and Apache Storm.
Solve complex real-time risk calculation requirements, handling heavy stream processing and highly concurrent data flows.

Requirements

5–8+ years of professional application development experience, with a strong focus on enterprise Java within highly parallel, low-latency, or distributed environments.
Strong financial knowledge of FX trading, options pricing, or real-time risk systems is highly preferred / obligatory.
Proven track record as a high-performing Individual Contributor (IC) delivering complex, high-throughput distributed systems in production environments.
Deep hands-on expertise in Core Java, including multi-threading, memory management, garbage collection tuning, and concurrency utilities.
Solid experience with real-time stream processing and distributed data architectures (e.g., Kafka, Apache Storm, CouchbaseDB/NoSQL, Spring).
Familiarity with modern infrastructure paradigms, such as containerization (OpenShift/Kubernetes) and cloud platforms (GCP/AWS) is highly advantageous.
Understanding of AI, machine learning, or advanced quantitative analytics applications in financial systems is a strong plus.
Outstanding communication and collaboration skills, with the ability to interact confidently and explain complex technical concepts to non-technical business partners, including trading desk heads.

Skills

Core Java
Multi-threading
Concurrency
Memory optimization
CouchbaseDB
Kafka
Apache Storm
Stream processing
Distributed data architectures
Spring
Containerization
OpenShift
Kubernetes
Cloud platforms
GCP
AWS
AI
Machine learning
Quantitative analytics

Work Type

Hybrid working model (up to 2 days working at home per week)
Full time

Experience Level

Senior Software Engineer

Education Level

Bachelor's degree/University degree or equivalent experience

Salary/Compensations

Competitive base salary (which is annually reviewed)

Benefits

27 days annual leave (plus bank holidays)
A discretional 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

About the Company

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.

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.
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.