layiq

/la·yiq/adjective

worthy; deserving; fitting; suitable.

A role, opportunity, or path that merits attention, time, and pursuit.

Senior Thermal-Hydraulics Analysis Engineer at Valar Atomics | LAYIQ

Build, run and maintain integrated Flownex SE network models of primary/secondary loops, balance of plant and power-conversion cycles for steady-state and transient analysis.
Characterize and size components (pumps, compressors, heat exchangers, valves, turbomachinery) and evaluate cycle performance and optimization across Brayton and sCO₂ architectures as required.
Analyze plant transients and control response (start-up/shutdown, load-follow, loss-of-flow, trips) and provide system boundary conditions to the CFD and FEA streams while consuming their loss/heat-transfer coefficients.
Produce calculation packages and system design-basis documentation under NQA-1; provide inputs to safety analysis and interface with detailed CFD models and neutronics power distributions.
Lead verification and validation of system models, set systems-modelling standards, support regulator/customer reviews, and mentor junior systems analysts.
Mentor engineers and train junior team members
Standardize Flownex modelling methods, component libraries and templates, and support the Stream Lead in scoping, estimating and scheduling systems work.
Basic Qualifications
Bachelor's degree or higher in Mechanical, Nuclear, Chemical or Aerospace Engineering with emphasis on thermodynamics, heat transfer or thermal-hydraulics systems.
5+ years of professional thermal-hydraulics / plant-systems analysis experience, including lead responsibility on integrated system or cycle models.
Preferred Skills and Experience
Master’s degree (MSc/MEng) or higher in Mechanical, Nuclear, Chemical or Aerospace Engineering with emphasis on thermodynamics, heat transfer or thermal-hydraulics systems.
Flownex SE expertise strongly preferred; otherwise demonstrable depth in a comparable systems/transient code (RELAP5, TRACE, GOTHIC, MELCOR, Modelica/Dymola, Aspen HYSYS Dynamics, Thermoflow / GateCycle) with willingness to adopt Flownex.
Strong applied thermodynamics, heat transfer, and fluid mechanics; closed-loop power-cycle design (Brayton, supercritical-CO₂).
Heat-exchanger thermal/hydraulic design and rating; turbomachinery and pump performance characterization; control-system representation.
Transient and dynamic simulation, including reactor thermal-hydraulics and decay-heat / natural-circulation scenarios.
Property libraries / equations of state (e.g., CoolProp / REFPROP) and helium, molten-salt, sodium, or CO₂ working fluids a strong plus.
Experience under a nuclear or regulated quality programme (NQA-1, ISO 9001, 10 CFR 50 Appendix B) and exposure to NRC/ASME environments.
Scripting/automation of work within defined workflows and quality assurance frameworks.
Track record of mentoring and leading technical systems analysis within a team.

Senior Thermal-Hydraulics Analysis Engineer

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