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Cryogenic Engineer

Job in Upton, Suffolk County, New York, 11973, USA
Listing for: Brookhaven National Laboratory
Full Time position
Listed on 2026-08-05
Job specializations:
  • Engineering
    Systems Engineer, Mechanical Engineer, Test Engineer, Process Engineer
Job Description & How to Apply Below
Location: Upton

National Synchrotron Light Source II RF Group Engineer

The National Synchrotron Light Source II (NSLS-II) RF Group designs, fabricates, operates, and maintains multiple high power Radio Frequency (RF) systems, including superconducting RF cavities cooled by a 4-Kelvin liquid-helium cryogenic plant. This position is responsible for the continued development, operation and optimization of the cryogenic plant, and related mechanical and utility systems. The successful candidate is expected to learn on the job all cryogenics-related concepts.

You will work as a productive and collaborative member of a multidisciplinary team of engineers and technicians through all phases of sub-system design, component selection, prototyping, fabrication, installation, commissioning, operation, and troubleshooting.

Essential Duties and Responsibilities:
  • Develop, commission, operate, troubleshoot and repair of cryogenic system and sub-systems, including limited off-hours support.
  • Perform analysis, simulation and calculation of cryogenic and mechanical components and systems using tools such as ANSYS, Gaspak, REFPROP, CST and related codes.
  • Assist in the cryogenic operation of superconducting cavities.
  • Design, procure, and/or develop cryogenic subsystems to meet evolving accelerator requirements.
  • Generate and maintain schematics, process flow diagrams, work instructions and technical documentation.
  • Develop maintenance schedules and work plans for operating cryogenic systems.
  • Maintain current knowledge of principles, methods, and best practices within the related fields.
  • Mentor junior engineering and technical staff.
Required Knowledge, Skills, and Abilities:
  • B.S. in Mechanical Engineering, Chemical Engineering, Cryogenic Engineering or Physics with a minimum of seven (7) years of relevant experience, including at least five (5) years of combined experience in development and operation of cryogenic systems or similarly complex mechanical systems with a demonstrated record of successful contributions.
  • Demonstrated experience with structural or thermal simulation tools such as ANSYS, CST, Refprop, Gaspak, Aspen HYSYS, or equivalent multiphysics analysis software.
  • Experience of using common components, tools and equipment, such as pressure gauges, temperature sensors, cryogen level sensors, flow meters, pressure relief valves, control valves and pressure relief valves.
  • Excellent written and verbal communication skills.
  • Strong interpersonal skills with the ability to work effectively in a diverse technical team environment.
  • Availability for limited off-hour on-call support for urgent operational issues (typically < 2%).
Preferred Knowledge, Skills, and Abilities:
  • B.S. in Mechanical Engineering, Chemical Engineering, Cryogenic Engineering or Physics with a minimum of ten (10) years of relevant experience.
  • Master's in Mechanical Engineering, Chemical Engineering, Cryogenic Engineering or Physics with a minimum of seven (9) years of relevant experience.
  • Experience with cryogenic systems and components for superconducting cavities or magnets for accelerator applications.
  • Experience in pressure and cryogenic safety analysis.
  • Experience with process controls and feedback loops.
Environmental, Health & Safety Requirements:
  • Hand / eye coordination
  • May be required to walk up to 0.5 mile & climb stairs to access equipment
  • May be required to lift 30 lbs.
  • May be required to climb ladders for equipment service and inspection
  • May be required to occasionally work off-hours, nights and/or weekends to support mission critical projects
Other Information:
  • This is an onsite position.
  • The candidate must be legally authorized to work in the U.S.

Brookhaven National Laboratory is committed to providing fair, equitable and competitive compensation. This is a multi-level role and the full salary range for this position is $ - $ / year. You will be placed at the level and salary commensurate with your experience. Salary offers will be commensurate with the final candidate's qualification, education and experience and considered with the internal peer group.

Brookhaven National Laboratory is committed to employee success and we believe that a comprehensive employee benefits program is an important and meaningful part of the compensation employees receive. Review more information at BNL | Benefits Program

Brookhaven National Laboratory requires all non-badged personnel including visitors to produce a REAL- REAL- documentation to access Brookhaven National Laboratory – view more information .gov/real- is due to nationwide identification requirements for federal site access as required by the federal REAL . Those not in possession of a REAL
-compliant document will not be permitted to access the site which includes access to the Laboratory for interviews.

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