We’re Hiring – Senior MES Engineer (Siemens Opcenter) Start: ASAP | Long-term mission – Based in Wavre / Braine-l’Alleud / Lessines Hybrid model: 3 days on-site, 2 days remote Languages: Fluent French & English requiredWe are looking for a Senior MES Engineer with strong hands-on experience on Siemens Opcenter to support critical MES projects for major pharmaceutical clients. You will be embedded in a dynamic team working across highly regulated GxP environments. Your RoleAs a Senior MES Engineer, you will:Act as the technical reference for Siemens Opcenter MES configuration and integrationTranslate business and process requirements into detailed technical specificationsConfigure and customize the Opcenter platform (no development from scratch)Collaborate with multidisciplinary teams (Automation, IT, QA, Production)Support system integration, testing (IQ/OQ), and validation phasesEnsure data integrity and GMP compliance throughout all MES activitiesManage interfaces, dependencies, and technical documentationProvide on-site technical support, maintenance, and training when requiredParticipate in project planning and progress reviews (agile/waterfall hybrid) Your Profile Background:Master’s degree in Computer Science or Industrial Engineering (non-automation profile)Minimum 4 years of hands-on experience with Siemens Opcenter Solid understanding of MES concepts and pharma manufacturing environments Technical Skills:Strong command of SQL (queries, scripting, data manipulation) – not architectureFamiliarity with technologies such as .NET, C#, VB, ASPExperience working with relational databases (SQL Server / Oracle)Able to work in validated GxP environments Soft Skills & Mindset:Client-facing attitude, professional and composed on-siteExcellent analytical and problem-solving mindsetSelf-driven, proactive, and organizedTeam-oriented, communicative, and able to work under pressure Languages:Fluent French & English (written and spoken) Other:Willingness to travel between Wavre/Braine-l’Alleud and Lessines (3/5 days on-site) Why Join Us?This is a unique opportunity to contribute to mission-critical MES projects in the using your Siemens Opcenter expertise to support world-class pharmaceutical manufacturing processes. You’ll be working on site with top-tier clients (UCB, Takeda), helping them optimize operations, ensure regulatory compliance, and enable digital transformation.You’ll join a motivated and collaborative team where technical excellence, ownership, and client trust are valued. Your expertise will directly impact production efficiency, product quality, and patient safety in a highly regulated environment. Ready to elevate your MES career?Apply now and become a trusted MES expert on projects that matter.