Bid Manager – Water & Wastewater Treatment (EPC)

Job Description Why This Role Matters As Bid Manager, you will be responsible for leading the preparation, coordination, and submission of competitive EPC proposals for water and wastewater infrastructure projects across the Middle East. You will play a key role in securing new business opportunities by bringing together multidisciplinary engineering, commercial, and operational inputs into integrated solutions that meet client requirements and align with BESIX's strategic objectives. Working closely with internal stakeholders and external technology partners, you will ensure the delivery of technically robust, commercially sound, and compliant proposals. What You'll Drive Lead the end-to-end bid management process for water and wastewater treatment EPC opportunities. Develop bid strategies, submission plans, schedules, and internal coordination frameworks to ensure successful tender delivery. Coordinate multidisciplinary teams across Engineering, Estimation, Procurement, Operations, HSE, Quality, Legal, and Finance. Manage technical integration of civil, structural, mechanical, electrical, instrumentation, and process engineering disciplines. Act as the primary interface with technology providers, process partners, consultants, and specialist subcontractors. Ensure alignment of process design packages, equipment specifications, technical deliverables, and commercial inputs within the overall EPC proposal. Review tender documentation, identify project risks, and coordinate mitigation measures. Support cost estimation, value engineering, and proposal optimization initiatives. Lead the preparation of technical submissions, commercial proposals, compliance matrices, methodologies, schedules, and tender presentations. Ensure compliance with client requirements, tender instructions, applicable regulations, and BESIX standards. Participate in client meetings, technical clarification workshops, negotiations, and post-tender activities. Manage internal approval processes and ensure timely submission of tender packages. Support the successful handover of awarded projects to execution teams. Qualifications You're a Great Fit If You Have Qualifications Bachelor's or Master's Degree in Civil Engineering, Mechanical Engineering, Environmental Engineering, Chemical Engineering, or a related discipline. Minimum 10 years of experience in bid management, tendering, proposal management, or project engineering within the water and wastewater sector. Proven experience in EPC, Design-Build, or turnkey infrastructure projects. Strong understanding of water and wastewater treatment processes and associated civil, structural, mechanical, electrical, and process systems. Experience coordinating multidisciplinary engineering teams and external technology partners. Strong knowledge of EPC contracting, commercial evaluation, risk management, and tendering processes. Excellent communication, stakeholder management, technical writing, and presentation skills. Ability to manage multiple opportunities simultaneously in a fast-paced environment. Experience in the GCC or Middle East market and familiarity with regional tendering practices is highly desirable. Preferred Experience Wastewater Treatment Plants (WWTP) Sewage Treatment Plants (STP) Water Treatment Plants (WTP) Pumping Stations Reuse & TSE Projects Desalination Facilities Environmental Infrastructure Projects FIDIC-based Contracts EPC and Design-Build Procurement Models Additional Information Why You’ll Enjoy Working with Us Competitive Benefits Positive Workplace Culture Opportunity to work with a leading international construction group Exposure to large-scale, high-impact projects in the Middle East Collaborative, diverse, and professional work environment Career growth and development opportunities Company Description Six Construct, a subsidiary of the BESIX Group, is the largest Belgian construction company operating in the Middle East. The company combines the efforts of a highly skilled workforce, along with strategic planning and innovative use of technology to overcome the most complex business challenges. Six Construct is a multi-services company that operates in the construction of commercial and residential buildings, sport and leisure facilities, infrastructure and marine-related projects. The company currently employs a workforce of approximately 4,000 in the Middle East, and a total of 10,000 worldwide.