Nobel International EAD is a European manufacturer of renewable energy and high-efficiency heating solutions, specializing in heat pumps, pressure tanks, solar thermal systems, and integrated heating technologies for residential, commercial, and industrial applications.

The company designs and manufactures advanced products that prioritize energy efficiency, reliability, and long-term performance while supporting the transition toward sustainable, low-carbon technologies. With a strong commitment to quality, innovation, and continuous product development, Nobel International EAD collaborates closely with installers, distributors, and business partners across Europe to deliver solutions that meet modern energy demands and European quality standards.

The Senior Research & Development Engineer is a full-time, on-site position based in Elin Pelin, Bulgaria.

This role is responsible for leading the development of new heating and renewable energy products, from concept and design through prototyping, testing, validation, and production readiness. Day-to-day responsibilities include conducting technical research, designing and optimizing mechanical components and thermal systems, developing prototypes, performing laboratory and field testing, and evaluating product performance to ensure compliance with European standards and industry regulations.

The engineer will collaborate closely with cross-functional teams, including Manufacturing, Quality, Purchasing, and Product Management, to transform technical requirements into reliable, manufacturable products. The role also includes preparing technical documentation, supporting product certification activities, identifying opportunities for continuous improvement, and contributing to the company's innovation strategy and future product development roadmap.

• Bachelor's or Master's degree in Mechanical Engineering, Thermal Engineering, Energy Engineering, or a related technical discipline.

• Minimum 3 years of experience in Research & Development, Product Development, or Mechanical Design within a manufacturing environment.

• Experience designing and developing mechanical, thermal, HVAC, or renewable energy products.

• Strong analytical and problem-solving skills, including performance evaluation, root-cause analysis, and product optimization.

• Experience with product prototyping, laboratory testing, validation, and engineering verification.

• Proficiency in SolidWorks or similar 3D CAD software.

• Knowledge of manufacturing processes, Design for Manufacturing (DFM), and product industrialization.

• Familiarity with European standards and regulations, including CE, EN, ErP, and EcoDesign requirements.

• Excellent communication and collaboration skills, with the ability to work effectively in multidisciplinary teams.

• Professional working proficiency in English.

• Experience with heat pumps, pressure vessels, solar thermal systems, or HVAC products is considered an advantage.

At Nobel International EAD, we provide our employees with the following benefits:

• Competitive salary package and performance bonuses.

• Opportunity to work for a growing European manufacturer with an international presence.

• Participation in the development of innovative, energy-efficient technologies.

• Long-term career development and professional growth opportunities.

• Collaborative engineering environment with cross-functional teams.

• Modern manufacturing and R&D facilities.

• EU Blue Card sponsorship and relocation support for eligible international candidates.

If you are interested in this exciting opportunity, please submit your application via our career portal. We look forward to hearing from you!