[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Citigroup jobs](https://jobs.opennash.com/companies/citigroup/) · [Search jobs](/search/) Citigroup · Pune Maharashtra India # Senior Software Engineer Rust OR C++ Equities Pune Maharashtra India Senior individual contributor Software Engineering Listed on Citigroup’s official careers site. Listed as of October 13, 2026. Check that it is still open and apply there. [Apply on Citigroup’s careers site →](https://citi.wd5.myworkdayjobs.com/2/job/Pune-Maharashtra-India/Senior-Software-Engineer---Equities-Low-Latency-Technology--Rust---C---_26979885) [OpenNash Jobs](https://jobs.opennash.com/) / [Citigroup](https://jobs.opennash.com/companies/citigroup/) / Senior Software Engineer Rust OR C++ Equities ## Job description Department Overview The Equities Technology division is responsible for building and maintaining the high-performance, ultra-low-latency trading infrastructure that powers our global equities business. This includes market data dissemination, order routing, algorithmic execution, smart order routing (SOR), and real-time risk management systems. We operate in a highly competitive environment where microseconds matter, requiring cutting-edge software engineering practices, deep hardware-software co-design, and robust system reliability. ### Role Summary We are seeking an exceptional Senior Software Engineer with deep expertise in Rust and C++ to join our Equities Low-Latency Trading Technology team. In this role, you will design, develop, and optimize our next-generation trading systems. You will lead the strategic transition of legacy high-performance C++ components to modern Rust where safety and concurrency are paramount, while continuing to maintain and optimize critical ultra-low-latency C++ execution paths. This is a highly technical role requiring a strong understanding of computer architecture, operating systems, network protocols, and modern software engineering paradigms. ### Key Responsibilities - System Design & Development Architect, build, and maintain ultra-low-latency trading systems, including exchange connectivity gateways, market data feeds, and algorithmic execution engines using Rust and C++ Design clean, modular, and reusable APIs and libraries that can be leveraged across multiple trading desks. Lead the strategic migration of critical trading components from C++ to Rust, leveraging Rust's memory safety and concurrency guarantees without sacrificing performance. - Performance Optimization Profile and optimize systems to achieve sub-microsecond latencies and deterministic performance. Apply low-latency techniques such as CPU pinning, cache-friendly data structures, lock-free programming, memory-mapped files, and custom memory allocators. Utilize kernel bypass technologies (e.g., Solarflare OpenOnload, DPDK, EF_VI) to minimize network stack overhead. - Concurrency & Reliability Design and implement highly concurrent, thread-safe, and lock-free algorithms to handle massive throughput with minimal jitter. Implement rigorous testing methodologies, including unit testing, integration testing, property-based testing (in Rust), and high-fidelity simulation/back testing environments. Ensure the high availability and operational resilience of trading systems through robust error handling and failover mechanisms. - Collaboration & Support Work closely with quantitative researchers, traders, and product managers to translate complex trading strategies and business requirements into robust, production-ready software. Build real-time telemetry, monitoring, and alerting tools to ensure operational visibility. Provide level-3 escalation support for production systems during market hours. ### Required Technical Skills & Qualifications Programming Languages C++: Expert-level proficiency in C++ (C++11/14/17/20), with a deep understanding of template metaprogramming, RAII, move semantics, smart pointers, and the standard library (STL). ### Rust Strong proficiency in Rust, including ownership/borrowing concepts, lifetimes, unsafe Rust boundaries, macro systems, and the Cargo ecosystem. Systems Programming & Low-Latency Deep understanding of Linux operating system internals (kernel tuning, memory management, virtual memory, page faults, system calls). Experience with low-latency networking (TCP/IP, UDP, Multicast) and socket programming. ### Familiarity with hardware-level concepts CPU cache hierarchies (L1/L2/L3), TLB, branch prediction, and memory barriers. Concurrency Proven experience in multi-threaded programming, memory models (sequential consistency, acquire-release), and lock-free data structures. Equities Domain Knowledge Solid understanding of Equities market structure, order types, exchange protocols (FIX, OUCH, ITCH), and trading lifecycles. Tools & Infrastructure Experience with profiling and debugging tools (gdb, valgrind, perf, VTune, heaptrack). Proficiency with build systems (CMake, Cargo) and CI/CD pipelines (Git, Jenkins/GitHub Actions). ### Preferred Qualifications Experience with FPGA integration or hardware acceleration. Experience with kernel bypass technologies (Solarflare EF_VI, OpenOnload, DPDK). Knowledge of market-making, smart order routing (SOR), or statistical arbitrage execution strategies. Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related quantitative field. ### Core Competencies Analytical Thinking: Strong problem-solving skills with the ability to analyze complex systems and identify performance bottlenecks. ### Collaboration Excellent communication skills with the ability to work effectively in a fast-paced, cross-functional team environment. ### Adaptability Eagerness to learn new technologies and adapt to evolving business requirements and market conditions. ### Quality Focus Commitment to writing clean, well-documented, and thoroughly tested code. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills 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. ## At a glance - Posted by the employer: Not stated - First seen by OpenNash: Aug 20, 2026 - Last checked: Oct 13, 2026 - Listed for: 54 days - Location: Pune Maharashtra India[Apply on Citigroup’s careers site →](https://citi.wd5.myworkdayjobs.com/2/job/Pune-Maharashtra-India/Senior-Software-Engineer---Equities-Low-Latency-Technology--Rust---C---_26979885) ## More jobs at Citigroup ### [Abinito Programmer Analyst](https://jobs.opennash.com/companies/citigroup/jobs/781c7f6897d62bd86e41/) Pune Maharashtra India ### [Application Developer - Java Spark Big Data - Assistant Vice President - C12 - Pune](https://jobs.opennash.com/companies/citigroup/jobs/ba7fb9a0fd55f945359a/) Pune Maharashtra India ### [Application Developer Programmer Analyst](https://jobs.opennash.com/companies/citigroup/jobs/25975f4f25e10e2ca1a2/) Pune Maharashtra India ### [Application Support Analyst with SRE](https://jobs.opennash.com/companies/citigroup/jobs/898fcac0a7f4550490c8/) Pune Maharashtra India ## Similar jobs at other companies ### [Senior Rust Software Engineer – Embedded Systems](https://jobs.opennash.com/companies/accenture/jobs/1d18888addfce15737cb/) Accenture ### [Software Engineer III, Equities Technology - C++ Low Latency](https://jobs.opennash.com/companies/jpmorganchase/jobs/e70f196c3f1c2713a088/) JPMorganChase · Singapore ### [Software Developer (Firmware, RUST, C++ and Linux)](https://jobs.opennash.com/companies/siemens/jobs/382d1db05bb5f7b9b1e8/) Siemens ### [R&D Software Engineer (C++, Rust, Python)](https://jobs.opennash.com/companies/keysight-technologies/jobs/3e3ccf378196c0367238/) Keysight Technologies · Dresden, Germany OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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