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Open nowPosted 9 days ago

Proposal Engineer

MyCareersFuture94,028 open roles

Pay
SGD 4,000 – SGD 8,000 a month
Where
West, Singapore
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Your applicationOpen nowProposal EngineerMyCareersFuture · West, Singapore

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This job: posted 9 days ago

The posting

About the Role

Hydroleap is looking for a detail-oriented Proposal Engineer to prepare high-quality technical and commercial proposals for our water and wastewater treatment solutions. Sitting at the interface between Sales, Process/Application Engineering, Operations, and other internal teams, you will translate customer requirements and technical designs into compelling, accurate, and competitive proposals. This is a hands-on engineering role for someone who enjoys both the technical depth of water treatment processes and the discipline of winning tenders.

Key Responsibilities

Enquiry qualification and scoping

  • Review incoming enquiries, RFQs, and tender documents; assess technical feasibility and fit against Hydroleap's technology.
  • Interrogate client-supplied water quality data (COD, BOD, TSS, TDS, conductivity, pH, hardness, flow profiles) and identify gaps that need clarification before pricing.
  • Make and document bid / no-bid recommendations.

Technical solution design

  • Select and size the treatment train, including electrochemical reactor sizing, pre-treatment and post-treatment stages, and sludge handling.
  • Translate pilot and jar test results into full-scale design assumptions.
  • Prepare process flow diagrams, mass balances, and general arrangement inputs with the design team.
  • Define scope of supply, battery limits, exclusions, and deviations against client specifications.

Costing and commercial modelling

  • Build bills of materials and obtain vendor quotations for equipment, instrumentation, and installation.
  • Develop CAPEX build-ups and OPEX models covering power, consumables (electrodes, chemicals), sludge disposal, and maintenance.
  • Apply margin and contingency in line with internal guidelines and flag commercial risk to the Engineering Manager and CFO.

Proposal production

  • Write the full technical and commercial proposal document to a standard that requires minimal rework before submission.
  • Manage submission deadlines, tender portal requirements, and document compliance.
  • Respond to client technical clarifications and revise offers through the negotiation cycle.
  • Attend techno-commercial meetings with clients alongside sales.

Handover and continuous improvement

  • Hand over won orders to Project Management with the full cost basis, assumptions, and risk register intact.
  • Maintain a proposal library — reusable technical content, cost benchmarks, and vendor pricing.
  • Track win/loss outcomes and feed lessons back into pricing and design assumptions.
  • Operate within Hydroleap's Proposal-to-Commercialisation gate process.

Requirements

  • Bachelor's degree or higher in Environmental Engineering, Civil Engineering, Chemical Engineering, or a related field.
  • 3–7 years of experience in a proposal, tendering, or applications engineering role within the water/wastewater treatment, EPC, or related industry.
  • Solid working knowledge of water and wastewater treatment technologies and processes; exposure to electrochemical treatment is a plus.
  • Ability to read and interpret P&IDs, process flow diagrams, and technical specifications, and to build CAPEX/OPEX cost models.
  • Strong project coordination, technical writing, and editing skills.
  • Proficient in MS Office Suite; experience with proposal, estimating, or document management tools is a plus.
  • Comfortable working under tight deadlines and managing multiple proposals simultaneously.
  • Strong cross-functional communication skills, with the ability to bridge technical and commercial conversations.
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