Proposal Manager Wärtsilä is an innovative technology company known for being a forerunner in the Marine and Energy markets. Every day, we – Wärtsilians \- put our hearts and minds into turning Wärtsilä's purpose of enabling sustainable societies through innovation in technology and services into reality. Our ultimate aim is to provide increased value to both our customers and society. New, game\-changing ideas and continuous improvement have been part of our DNA since 1834\. Together, we can create new business opportunities and more sustainable future that we can all be proud of. We want to transition the world towards a decarbonised and sustainable future. By pushing the boundaries of engineering and technology, we can make it work. We are always on the lookout for future\-oriented talent – want to join the ride? Title: Proposal Manager Location: Mexico (Primary); also open in Colombia and Panama Region of Work: AMER Growth, with focus on Central Region and Mexico **About the role** We are seeking a Proposal Manager to lead proposal management activities and support market development across AMER Growth. You will coordinate technical and commercial offer preparation, drive risk mitigation and cost accuracy, and collaborate closely with Sales, Project Management, Technology, and contractors to win new business. **Key responsibilities** * Lead end\-to\-end proposal management and offer preparation to meet customer requirements. * Support lead origination and market development in designated countries (Mexico primary; other AMER Countries). * Build and guide a technical sales support team; promote a team\-selling approach. * Configure sales solutions based on customer needs and technical specifications. * Manage technical clarifications, deviations, and risk mitigation. * Prepare accurate cost calculations for new\-build projects; track and explain cost deviations vs. budget. * Coordinate sales opportunity tasks with centralized organizations. * Support technical and contract negotiations with customers; assist BDMs to close new business. * Screen opportunities, participate in Risk \& Opportunity reviews and Sales Kick\-offs. * Contribute to Win/Loss analyses and continuous improvement. * Represent the company at customer meetings, lunch \& learns, trade shows, conferences, and speaking engagements. **Qualifications** * B.Sc. or M.Sc. in Engineering, ideally related to power generation. * 5\+ years of engineering experience in the energy sector; oil \& gas and energy production experience strongly preferred. * Broad knowledge of technical specifications; industrial/production equipment experience. * Familiarity with Wärtsilä products and solutions is a strong plus. * Advanced user of MS Office. * Excellent English skills and fluent Spanish. * Strong written, oral, interpersonal, and problem\-solving skills. * Able to work effectively in a global, cross\-functional environment with minimal supervision. * Sales mindset with goal focus and a “can\-do” attitude. **Work style and travel** * Flexible schedule (not strictly 8–4\); proactive, eager to learn, and willing to challenge yourself. * Willingness to travel as needed across the region Last application date: 05/01/2026 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.