About Rotarex
Since 1922, Rotarex has been the world leader in cylinder valves, pressure regulators and equipment for all gas applications. With nearly 2,000 employees worldwide, we support a wide range of industries including semiconductor, medical, automotive, food & beverage, energy, research and many others.
Innovation, quality and customer satisfaction are at the heart of everything we do, making Rotarex a trusted partner for customers around the globe.
📍 Location: Lintgen, Luxembourg
We are currently moving to our brand-new Industry 4.0 manufacturing site in Bissen, a state-of-the-art facility designed to provide an outstanding working environment for our employees while supporting operational excellence and innovation.
💼 Your mission
As a Junior R&D Engineer, you will support the development of innovative products from the initial concept through industrialization. Working alongside experienced engineers, you will progressively build your expertise in mechanical design, prototyping, testing, validation, and industrialization, while contributing to real development projects with international exposure.
Your responsibilities will include:
Product design & development
Support the development of new products and the continuous improvement of existing products
Participate in product development projects from concept, design and prototyping through testing, validation and industrialization
Create and modify 2D technical drawings and 3D CAD models
Prepare designs in accordance with customer specifications, internal requirements, manufacturing constraints, supplier capabilities and company engineering standards
Gather technical information including materials, dimensions, tolerances, interfaces and manufacturing requirements
Assist in preparing and reviewing engineering documentation, technical drawings, specifications, prototypes and samples
Perform basic engineering calculations, design reviews, tolerance analyses and technical evaluations under the guidance of senior engineers
Prototyping, testing & validation
Support prototype manufacturing and coordinate the availability of prototype parts and samples
Participate in product testing activities including test preparation, execution support, data collection and documentation of results
Assist in analyzing technical issues identified during development, testing, production or product introduction
Contribute to design optimization, standardization and cost reduction initiatives
Support product validation activities to ensure compliance with technical requirements and quality standards
Cross-functional collaboration
Work closely with Production, Quality, Purchasing, Product Management, Sales and suppliers throughout the development process
Provide technical information, drawings, specifications and manufacturing requirements to internal teams and external suppliers
Support supplier follow-up and prototype manufacturers when required
Participate in technical meetings, design reviews and cross-functional project discussions
Escalate technical risks or uncertainties to senior engineers whenever necessary
Documentation & continuous improvement
Maintain accurate and up-to-date technical documentation, including CAD files, drawings, specifications, calculations, test reports and project records
Update technical information within SAP and other company systems where applicable
Ensure proper organization of engineering documentation according to company standards
Follow engineering procedures, quality standards and safety requirements
Continuously develop your technical knowledge through training and participation in R&D activities
🧠 Your profile
Education and technical skills
Bachelor's degree in Mechanical Engineering, Electromechanical Engineering, Industrial Engineering, Product Design Engineering or a related technical field
Entry-level profile or first professional experience in R&D, mechanical design, manufacturing or product development
Internship, apprenticeship or academic projects within an industrial environment are considered a strong advantage
Good understanding of mechanical design principles
Knowledge of 2D technical drawings and 3D CAD modeling
Experience with Siemens NX is highly appreciated
Basic knowledge of dimensioning, tolerancing, materials and manufacturing processes
Ability to read and interpret technical drawings and engineering specifications
Basic understanding of prototyping, testing and validation activities is an advantage
Good knowledge of Microsoft Office / Microsoft 365
Knowledge of SAP or another ERP system is considered an asset
Fluent English is mandatory
French and/or German are considered strong assets
Personal qualities
Strong curiosity for engineering, product development and industrial technologies
Analytical mindset with strong attention to detail
Well organized and able to manage documentation and multiple assigned tasks
Eager to learn and continuously develop new technical skills
Team player with excellent collaboration and communication skills
Comfortable working in a multicultural and cross-functional environment
Proactive, adaptable and solution-oriented
✨ What makes this role unique
An excellent opportunity to launch your career within an international R&D environment
Hands-on involvement in the complete product development lifecycle, from concept to industrialization
Exposure to advanced engineering technologies, CAD design, prototyping and laboratory testing
Daily collaboration with experienced engineers and multidisciplinary teams
A role combining technical learning, innovation and real industrial impact
Clear opportunities to progressively take ownership of increasingly complex engineering projects
🌟 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.