About Rotarex

Since 1922, Rotarex has been the world leader in cylinder valves, pressure regulators and equipment for all gas applications. Our solutions are trusted across a wide range of industries including semiconductor, medical, research, automotive, food & beverage, fire protection, LPG and many more.

With nearly 2,000 employees worldwide, Rotarex combines innovation, engineering excellence and customer focus to develop products that set the benchmark for the industry.

📍 Position based in Lintgen, Luxembourg

Relocation in progress to our brand new Industry 4.0 manufacturing site in Bissen, designed to provide an ultramodern, high-tech working environment focused on employee wellbeing and operational excellence.

🎯 Your mission

As an R&D Engineer, you will take ownership of product development projects from concept to industrialization. You will play a key role in designing innovative mechanical solutions while ensuring technical excellence, manufacturability and compliance with customer and industry requirements.

Product Development & Engineering

Develop new products and improve existing solutions according to customer requirements, market expectations and company objectives
Lead assigned R&D projects from concept, design and prototyping through validation and industrialization
Create, review and validate 2D technical drawings and 3D CAD models
Define products in accordance with customer specifications, manufacturing constraints, technical standards and internal design rules
Gather and analyze all technical information required for product development, including materials, tolerances, interfaces, manufacturing processes and performance criteria
Perform engineering calculations, tolerance analysis, design evaluations and technical assessments to support design decisions
Identify technical risks and propose robust engineering solutions throughout the development process

Prototyping, Testing & Validation

Coordinate prototype manufacturing and sample production
Define validation requirements and support product testing with internal laboratories and external technical partners
Analyze test results, product failures and non-conformities, and implement appropriate corrective actions
Ensure products meet quality, performance and regulatory requirements before industrialization

Industrialization & Cross Functional Collaboration

Work closely with Production, Quality, Purchasing, Product Management, Sales and suppliers to ensure manufacturability, quality and cost efficiency
Provide technical support regarding product specifications, materials, manufacturing feasibility and supplier-related technical topics
Participate in supplier evaluations and technical reviews when required
Support successful product industrialization and continuous product improvements

Technical Documentation & Continuous Improvement

Review and approve technical drawings, specifications, calculations, prototypes and engineering documentation
Maintain accurate technical documentation, CAD files, calculations, test reports and product data
Manage product information within SAP and internal engineering systems
Participate in design reviews, technical discussions and cross-functional project meetings
Contribute to design optimization, cost reduction, standardization and value engineering initiatives
Support and mentor less experienced team members when needed

🧠 Your profile

Education & Technical Skills

Bachelor's degree in Mechanical Engineering, Electromechanical Engineering, Industrial Engineering or a related technical discipline
Professional experience in R&D, mechanical design or product development within an industrial environment
Strong expertise in mechanical engineering principles and product development
Excellent knowledge of 2D drawings and 3D CAD modelling
Experience with Siemens NX is a strong advantage
Good understanding of materials, tolerancing, manufacturing processes and design for manufacturability
Experience with prototype development, testing and product validation
Ability to interpret customer specifications, technical standards and regulatory requirements
Experience working with suppliers and manufacturing teams is an advantage
Knowledge of SAP is considered a plus
Good command of Microsoft Office / Microsoft 365
Fluent English is mandatory
French and/or German are considered strong assets

Personal Skills

Strong analytical and problem-solving mindset
Able to work autonomously and take ownership of engineering projects
Excellent organizational and project management skills
Attention to detail and engineering accuracy
Collaborative team player with strong communication skills
Proactive mindset focused on innovation and continuous improvement
Comfortable managing multiple priorities in an international environment

🌟 What makes this opportunity exciting

A role with full ownership of innovative product development projects
The opportunity to design products from concept through industrialization
Exposure to multidisciplinary teams and international engineering projects
A position combining mechanical design, technical analysis, testing and industrialization
The chance to directly influence product performance, innovation and future developments

🌟 What you will find at Rotarex

The strength of a global industrial group combined with a family-oriented culture
Real opportunities for training, development and career growth
Flexible working hours (depending on the position) promoting a healthy work-life balance
An attractive benefits package including additional holidays, bonuses and social benefits
A new Industry 4.0 manufacturing site in Bissen, offering an ultra-modern working environment (canteens, fitness center, free parking, electric vehicle charging stations, air-conditioned facilities...)
Easy access to the site
Additional benefits including Sympass, preferential partnerships (banking, health insurance, mobile plans...)
Company events that foster team spirit and collaboration

Recruitment process

1st interview: Teams interview with HR and the Hiring Manager
2nd interview: On-site interview

Only applications submitted through our official application process will be considered

All applications will be treated with the strictest confidentiality

A small tip: AI-generated applications often sound alike… let your personality and experience make the difference

Ready to start your engineering career with Rotarex? Join us and help shape the next generation of innovative industrial solutions.

R&D Engineer - Watermist