Summary: Wärtsilä is seeking a Service Engineer Mechanic to perform field service mechanical activities on 4-Stroke Marine Engines and Propulsion Systems, focusing on maintenance, repairs, and troubleshooting. Highlights: 1. Perform maintenance, repairs, and troubleshooting on 4-stroke engines. 2. Repair and reassemble mechanical systems during scheduled overhauls. 3. Maintain and troubleshoot various propulsion equipment. Service Engineer Mechanic Wärtsilä is a world leader in marine technology and leading the industry's transformation towards a decarbonised and sustainable future. With the world’s widest portfolio and service network, we – Wärtsilians \- deliver efficient, safe and sustainable integrated products and solutions to enhance the business of our customers. The opportunities presented through digitalisation and new technologies are offering a new era of shipping. We want to change the course towards an interconnected and cleaner maritime future and are constantly on the lookout for future\-oriented talent to join our team and to work towards enabling sustainable societies through innovation in technology and services \- together. Business Unit Parts and Field Service is a global organisation with harmonised ways of working and tools to deliver the best possible services for our customers. In our global team we value, respect, and embrace different opinions and diversity. Safety, environment, and wellbeing are our foundation, and we never compromise them. We are looking for a **Service Engineer Mechanic**to carry out Field Service mechanical activities on *4\-Stroke Marine Engines* and *Propulsion Systems**.* The preferred location is **Valencia (Spain)**, but we also welcome applications from candidates in **S****outhern Spain** and the **Eastern Coast** (such as Cataluña, Baleares, Comunidad Valenciana, Andalucía, Murcia). **Your role and responsibilities** In this role, you will travel approximately 80% of the working time to various sites and work onsite primarily at marine and power plant installations, participating in new installations and overhauls, commissioning and startup activities, sea trials, and providing mechanical support by performing maintenance, repairs, and troubleshooting on mechanical systems and equipment. **As a Service Engineer Mechanic****you will focus on these responsibilities:** * Perform maintenance, repairs, and troubleshooting on various types of 4\-stroke engines, including diesel, gas, and dual\-fuel engines. * Repair and reassembly of mechanical systems and components during scheduled overhauls to maintain optimal performance. * Maintain, repair, and troubleshoot different types of propulsion equipment, such as controllable\-pitch propellers (CPP), thrusters, and waterjets. **Requirements for the position** * Proven hands\-on experience with 4\-stroke engines (diesel, gas, dual\-fuel), including troubleshooting, overhauls, and commissioning. * Experience with propulsion systems is nice to have but not strictly needed. * Accurate documentation and reporting of maintenance, repairs, and issues. * Strong organization and time management; energized by tight timelines and challenges. * Demonstrated ability to work effectively as part of a team, contributing to collective goals and supporting team members. * Safety\-first mindset. * Professional client interaction and customer service. * Willing to travel frequently (about 80%) for field service. * Good written and spoken English. **Why you and us?** *You are valued – as your true self.* At Wärtsilä YOU matter. We value diversity and are committed in supporting inclusive work community. *Your growth is supported.* We believe in continuous learning \& teamwork. Wärtsilian community has your back when it comes to development opportunities – so you can develop beyond your potential. *You get to make a difference*. Innovation and sustainability are important for us. Every day, we \- Wärtsilians \- put our hearts and minds into enabling sustainable societies through innovation in technology and services into reality. **Contact \& next steps** Does this sound like the job for you? If yes, submit your application before the deadline through our Careers portal. Applications through email or recruitment agency will not be considered. Our recruiting tool recognizes the time zone where the job ad has been published and closes the application period according to the same time zone. We will be conducting interviews with qualified candidates throughout the process and aim to keep you informed along the way. Are you still wondering if you should apply and would like to get something clarified? Please reach out to Luis Velasco, Team Leader Resources, Valencia via email at luis.velascomuguerza@wartsila.com, with any questions related to this position (only for questions from direct job applicants, applications through email will not be recorded or responded to). **Last application date: 12/03/2026** At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job\-relevant merits and abilities. Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.