The Low Latency Trading Infrastructure Engineer designs, delivers, and sustains ultra-low latency infrastructure for Citi's Global Equity Markets technology organization, focusing on engineering deterministic performance at nanosecond precision.
Compensation
$138,720.00 - $208,080.00
Responsibilities
Design low-latency compute topologies including bare-metal servers, NICs, kernel bypass technologies such as DPDK and Solarflare, and FPGA/co-location hardware
Evaluate CPU microarchitecture, NUMA topology, cache behavior, and memory bandwidth characteristics for trading workloads
Define hardware and firmware standards in partnership with vendors including Dell, HPE, Mellanox/NVIDIA Networking, Arista, Cisco, and Juniper
Design and maintain custom server build patterns tailored to the low-latency trading platform
Establish and enforce standards for low latency Linux, Windows, and Microservice infrastructure, including OS optimization, kernel bypass technologies, and CPU isolation
Lead customers through the design and delivery of OpenStack, Kubernetes, and software-defined networking solutions in the telco industry.
Locations (2)
Americas
EMEA
Compensation
Your base pay will depend on various factors including your geographical location, level of experience, knowledge and skills. In addition to the benefits above, certain roles are also eligible for additional benefits and rewards including annual bonuses and sales incentives based on revenue or utilisation.
Responsibilities
Translate Service Provider requirements into practical telco cloud platform architectures
Provide technical pre-sales consulting to Service Provider teams
Design and implement telco-grade open source multi-tenant private clouds and micro clouds
Investigate, report and/or fix software defects uncovered during customer deployments
Demonstrate advanced Infrastructure as code (IaC) techniques relevant to telco
Requirements
Nice to have: second language such as Spanish, Portuguese or French
Technical Leader role to drive the technical direction of Layer 2 within a new 6G UE Simulator, combining telecommunications and RAN expertise with technical leadership.
Responsibilities
Define and drive technical direction for Layer 2 within the 6G UE Simulator
Take ownership of complex technical topics from analysis and system design through implementation and verification
Translate complex feature requests into clear actionable engineering tasks
Drive technical decisions by evaluating alternatives, dependencies, risks, and trade-offs
Lead and coordinate complex technical initiatives across engineers and teams
Requirements
BSc or MSc in Telecommunications, Electronics, IT, or a related technical field
As a Principal Software Engineer in the Platform Software group, you will be instrumental in designing and developing our cutting‑edge Next‑Generation Firewall platforms.
Responsibilities
Lead the end‑to‑end design, development, and deployment of software for Next‑Generation Firewall platforms, from concept to field deployment.
Develop and maintain platform software, including kernel/user‑space drivers, platform security features using TPM, and third‑party switch/fabric provisioning.
Proactively collaborate and exchange information with cross‑functional teams including Hardware, ASIC, QA, and Manufacturing to ensure seamless platform integration.
Challenge the status quo by proactively identifying and advocating for product improvements, innovations, and new features based on internal and external feedback.
Simplify complex systems by developing consistent and maintainable platform software across all Next‑Gen Firewall platforms.
Lead architecture, systems design, and performance optimization of cloud infrastructure underpinning Palo Alto Networks' flagship solution.
Compensation
$156,400.00 - $253,000.00/yr
Responsibilities
Drive deep kernel-level profiling, TCP/IP stack tuning, socket optimization, memory/CPU cache efficiency, and interrupt handling to achieve deterministic, low-latency packet forwarding.
Architect, optimize, and maintain high-throughput networking pipelines, kernel/user-space data paths, and control plane routing engines across distributed multi-cloud footprints.
Design resilient, hyper-scale cloud connectivity topologies across AWS, GCP, and OCI—integrating cloud-native primitives with software-defined overlays and containerized workloads.
Establish systems-level telemetry, distributed tracing, and deep packet inspection diagnostics to ensure adherence to strict SLAs and SLOs.
Build scalable automation for fleet provisioning, configuration deployment, and validation using Terraform, Kubernetes, and Python-based toolchains.
Requirements
Bachelor's or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or equivalent practical industry experience.
Senior architectural role focused on 5G RAN L2, requiring expertise in 3GPP L1/L2/L3 software development, baseband design, and RAN architecture strategies.
Responsibilities
Develop specialized knowledge of the existing 5G Baseband Software architecture
Provide guidance to teams regarding intricate design issues
Conceive various strategies to enhance the current architecture
Work closely with other domain specialists
Develop, systemize, and test software for 5G Layer 1/Layer 2/Layer3 protocols
Lead a geographically dispersed team of Solution Engineers within Cisco’s global security sales organization, driving technical pre‑sales strategy and product adoption.
Responsibilities
Recruit, develop, and retain a high‑performing, diverse team of elite Solution Engineers across EMEA & APJC.
Partner with Sales and Product leadership to define and complete the technical go‑to‑market strategy, accelerating early‑adopter customer acquisition.
Serve as an executive technical sponsor, building trusted advisor relationships with CISOs, CIOs, and Platform Architects.
Champion the end‑to‑end "See‑Try‑Buy" lifecycle, optimizing POV velocity, private previews, and multi‑architectural proof‑of‑value trials.
Act as the strategic field bridge to Engineering, channeling competitive intelligence and technical feature gaps into the product development lifecycle.
Requirements
Bachelor’s degree in Computer Science, Electrical Engineering, Cybersecurity, Information Systems, or equivalent practical experience
Nice to have: leading technical incubation or start‑up sales motions
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