Simulation Engineer - CFD/Thermal

Sii Poland; Lublin; On-site; PLN 120,000 - 200,000; Full time

Benefits offered by this job

Great Place to Work

Profit sharing

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Regular integration events and trips

Comfortable and well-equipped offices

Medical care

Job summary

Sii Poland's Product Design Studio is seeking a CFD/thermal analyst to support engineering projects for automotive, industrial, energy, aerospace, and hi‑tech clients. You will develop simulations, build numerical models, and translate results into concrete design improvements.

Depending on experience, we offer full‑time or part‑time cooperation. You will collaborate with project teams, designers, and other CAE specialists to optimize performance, reliability, and cost, while preparing technical

Qualifications

• At least 3 years of experience conducting CFD and/or thermal analyses for technical products or systems.
• Familiarity with STAR-CCM+ or Ansys Fluent for simulations and validation.
• Ability to build, validate, and verify numerical models and interpret results.

Responsibilities

• Conduct CFD and/or thermal analyses for mechanical products and systems.
• Create numerical models and prepare simulation assumptions.
• Analyze flows, heat transfer, and product behavior under various operating conditions.
• Interpret results and recommend design changes.
• Collaborate with project teams, designers, and other CAE specialists.
• Support product optimization for performance, reliability, and cost.
• Prepare technical documentation and reports.
• Support validation and development processes throughout the life cycle.

Skills

CFD analyses

Thermal analyses

Numerical modeling

Documentation

English

Fluid mechanics

Heat transfer

CFD result interpretation

Education

Mechanical or related engineering degree

Tools

STAR-CCM+

Ansys Fluent

Job description

Join the Product Design Studio at Sii and support the implementation of engineering projects for clients from various sectors such as automotive, industrial, energy, aerospace, and hi-tech. We are looking for someone who specializes in CFD simulations or thermal analyses and wants to develop their skills in diverse projects related to design, optimization, and validation of products.

Depending on experience and availability, we offer the possibility of cooperation both in full-time and part-time capacities. We are looking for a versatile person who thrives in complex engineering issues and can translate simulation results into real improvements in designed solutions.

Your tasks

• Conducting CFD analyses and/or thermal analyses for mechanical products and systems
• Creating numerical models and preparing assumptions for simulations
• Analyzing flows, heat exchange, and product behavior under various operating conditions
• Interpreting simulation results and recommending design changes
• Collaborating with project teams, designers, and other CAE specialists
• Participating in product optimization for performance, reliability, and cost
• Preparing technical documentation and reports from conducted analyses
• Supporting validation and product development processes at various stages of the life cycle

Requirements

• Higher technical education (Mechanical Engineering, Energy, Aviation, Automation, or related fields)
• At least 3 years of experience in independently conducting CFD analyses and/or thermal analyses for technical products or systems
• Practical knowledge of STAR-CCM+ or Ansys Fluent
• Knowledge of fluid mechanics and heat transfer issues
• Ability to build, validate, and verify numerical models
• Experience in analyzing and interpreting simulation resultsAbility to prepare technical documentation and reports
• Good command of English allowing for work in an international environment

Job no. JOB-DPEPY

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care