Apps Dev Senior Engineer

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Most Relevant Skills

Other Relevant Skills

Qualifications

• Bachelor’s degree/University degree or equivalent experience

Responsibilities

• Architect, build, and optimize scalable, resilient, and high-throughput market data engines, curve builders, pricing integration layers, and real-time distribution services.
• Design and implement clean, modular APIs and event-driven architectures leveraging modern design patterns across Java, Python, or.NET (C#) ecosystems.
• Ensure ultra-reliable delivery of tick, end-of-day, and historical market data feeds to quantitative pricing libraries and trading applications.
• Act as a direct technical partner to Front Office trading desks, understanding business drivers and rapidly translating complex trading/pricing requirements into production-ready software.
• Collaborate closely with MQA (Quantitative Analysts) to integrate pricing models, risk calculators, and real-time analytics.
• Champion the adoption of Generative AI and Agentic AI frameworks within the software development lifecycle (e.g., automated code reviews, synthesis, workflow orchestration, agent-driven monitoring/troubleshooting).
• Prototype and evaluate agentic workflows for automated anomaly detection, market data quality validation, and intelligent developer tooling.
• Drive engineering best practices: test-driven development (TDD), CI/CD pipelines, containerization, comprehensive observability, and low-latency performance tuning.
• Take end-to-end ownership of delivery—from requirement analysis and technical design to deployment, production monitoring, and support.
• Required Skills & Qualifications
• Core Programming: Advanced proficiency in at least one primary backend language:
• Java (Modern Java, Spring Boot, concurrency, low-latency tuning, GC optimization), OR
• Python (Modern Python, asynchronous programming, NumPy/Pandas, FastAPI), OR
• .NET / C# (Modern.NET Core, multi-threading, asynchronous I/O, memory profiling).
• Distributed Systems & Messaging: Strong experience with enterprise messaging and streaming frameworks (e.g., Apache Kafka, RabbitMQ, Solace, ZeroMQ, or gRPC).
• Data Storage & Analytics: Proficiency in relational databases (PostgreSQL, Oracle, SQL Server) and time-series/caching technologies (e.g., Redis, InfluxDB, KDB+/q, or similar).
• Modern DevOps & Cloud: Practical experience with Git, CI/CD automation (e.g., GitHub, Tekton, Jenkins), Docker/Kubernetes/OpenShift, and Linux operating systems.
• AI Tooling & Automation: Demonstrated familiarity with LLMs, GenAI tools, and Agentic frameworks (e.g., LangChain, LlamaIndex, MCP tools, automated coding agents) applied to engineering productivity or domain solutions.
• Financial Services Experience: Proven track record working within a Tier-1 investment bank, hedge fund, or major financial institution.
• Asset Class Expertise: Strong domain knowledge in Commodities (Power, Gas, Oil, Metals, Agriculture) or adjacent cross-asset products ( FX, Rates, Equities ).
• Market Data Fundamentals: Understanding of real-time market data structures, tick data, exchange connectivity, forward curves, volatilities, and reference data feeds.
• Self-Driven & High Ownership: A true "go-getter" who takes proactive ownership of complex engineering problems with minimal supervision.
• Stakeholder Management: Exceptional communication skills with the ability to converse fluently with traders, MQA, risk managers, and technology leaders.
• Problem-Solving & Agility: Comfortable operating in a fast-paced, high-stakes Front Office environment where requirements evolve rapidly.
• Bachelor’s degree/University degree or equivalent experience
• Master’s degree preferred
• What we can offer you
• We work hard to have a positive financial and social impact on the communities we serve. In turn, we put our employees first and provide the best-in-class benefits they need to be well, live well and save well.
• 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:
• Generous holiday allowance starting at 27 days plus bank holidays; increasing with tenure
• A discretional annual performance related bonus
• Private medical insurance packages to suit your personal circumstances
• 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.
• Sounds like Citi has everything you need? Then apply to discover the true extent of your capabilities.
• #LI-KK5
• Technology
• Applications Development
• Full time
• Please see the requirements listed above.
• For complementary skills, please see above and/or contact the recruiter.
• 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.