HPC Network Engineer

Austin, TX, United States; Chicago, Illinois, United States; London, United Kingdom; New York, NY, United States; Seattle, Washington, United States Hudson River Trading’s High Performance Computing (HPC) Network Engineering team designs and engineers the low-latency communications infrastructure that underpins our incredibly large GPU and CPU compute clusters. Our mandate is to architect, optimize, and scale the high-performance LAN and WAN infrastructure that interconnects globally distributed, large-scale on-prem data centers, enabling them to grow rapidly and operate at peak performance in support of HRT’s demanding computational workloads. We are looking for a Network Engineer with deep experience in designing, deploying, and scaling networks for large-scale HPC environments. You will be building the next generation of infrastructure required by a premier algorithmic trading firm operating at the forefront of technology and finance. This position requires deep technical skills, along with the product leadership and vision needed for the future of cloud-scale networking. You’ll have broad responsibilities and freedom to analyze and solve problems, and your solutions will have an immediate impact on our operations worldwide. We’re looking for someone who loves technology and is excited about tackling big picture problems. You will work on a wide variety of projects to enhance the performance and capacity of the network and contribute to both the management and the technical nitty‑gritty of our computing architecture. Our people and our compute capabilities are our two most important differentiators, and that is where we are investing the most. Responsibilities Network design, product selection, routing, configuration and troubleshooting Closely work with our HPC Systems team, as well as other teams to scale our research environment Meet with external parties for project related items as well as future endeavors Overall capacity planning for the data center networks Develop scripts and processes to increase efficiencyCollaborate with others in the network team to solve cross discipline problems Mentor others as a senior resource Profile 10+ years of relevant experience Proven ability to prioritize workloads and manage implementation schedules with a meticulous attention to detail Proactive problem-solver with the technical skills and hands‑on mentality to tackle challenges in the field. Strong collaboration skills and a focus on continuous improvement, with the humility to own and learn from mistakes Skills Excellent oral and written communication skills: able to distill complicated issues into clear and concise terms Able to create and maintain clear and effective technical documentation In depth understanding of common layer 2 and layer network protocols (OSPF, BGP,IM, IGMP, RoCEv2, spine‑leaf architecture, and VXLAN) and best practices for them Proven ability to select and work with vendors to engineer switches for next‑generation computing environments Experience managing Arista (EOS), Cisco (NX‑OS), Nvidia (Cumulus) and SONiC‑based switches, as well as an interest in exploring new platforms Strong design skills in computing and grid networks, with expertise in capacity planning, and full lifecycle project management Experience with packet decoding and analysis tools such as tcpdump and Wireshark Experience with public cloud networks, such as AWS, GCP, Azure Familiarity with configuration management tools, such as Ansible or Salt is desirable to support zero‑touch network management Familiarity with Python, Prometheus, Grafana, ELK, GitHub is desirable Understanding of basic power consumption and cooling issues in a data center environment Knowledge of fiber optics technology and cabling standards ranging from 1 to 800 Gbps. Ability to sort through specs and make recommendations on appropriate purchases. Skilled in Unix/Linux command line utilities and networking stack Experience with AI style network designs and workloads is preferred The estimated base salary range for this position is 200,000 to 300,000 USD per year (or local equivalent). The base pay offered may vary depending on multiple individualized factors, including location, job‑related knowledge, skills, and experience. This role will also be eligible for discretionary performance‑based bonuses and a competitive benefits package which includes medical, dental, vision, basic life insurance, and enrollment in our company’s retirement savings plans. Employees will receive sick and parental leave, as well as other paid time off (including 20 vacation days and 10 paid holidays in the US). Please note that benefits and time off policies will vary across non‑US locations. Hudson River Trading (HRT) brings a scientific approach to trading financial products. We have built one of the world's most sophisticated computing environments for research and development. Our researchers are at the forefront of innovation in the world of algorithmic trading. At HRT we welcome a variety of expertise: mathematics and computer science, physics and engineering, media and tech. We’re a community of self‑stators who are motivated by the excitement of being at the cutting edge of automation in every part of our organization—from trading, to to recruiting and beyond. We value openness and transparency, and celebrate great ideas from HRT veterans and new hires alike. At HRT we’re friends and colleagues – whether we are sharing a meal, playing the latest board game, or writing elegant code. We embrace a culture of togetherness that extends far beyond the walls of our office. Feel like you belong at HRT? Our goal is to find the best people and bring them together to do great work in a place where everyone is valued. HRT is proud of our diverse staff; we have offices all over the globe and benefit from our varied and unique perspectives. HRT is an equal opportunity employer; so whoever you are we’d love to get to know you. Hudson River Trading (HRT) is committed to equal employment opportunity and complies with applicable laws regarding employee qualifications. Equal Opportunity/Fair Employment/Anti‑Discrimination, and Reasonable Accommodation. HRT please retain as per separate policy. Voluntary Self-Identification HRT is committed to providing equal employment opportunities for all groups. We care deeply about cultivating diversity and inclusion within our organization. For this reason, we invite you to voluntarily self-identify by answering the questions below. We do not discriminate based on any of these factors and any information collected will be kept completely confidential during your recruitment process. This information is used solely to support our commitment to equal employment opportunity and to comply with applicable laws that require this information to be summarized and reported to State and Federal Governments for civil rights enforcement purposes. #J-18808-Ljbffr