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Plantible Foods

B2B plant-based protein ingredients from lemna

Project Engineer Upstream - Capital Projects

Construction ManagementUpdated on Nov 11
Full-time

About the Job

Requirements

  • A bachelor's degree in Agricultural, Mechanical, Civil, Chemical, or Biosystems Engineering, Construction Management, or a related technical discipline.
  • Typically 5–10+ years supporting industrial, agricultural, or controlled-environment capital projects through design and field execution.
  • Bilingual fluency in English and Spanish, with strong verbal communication skills prioritized.
  • Experience with commercial greenhouse construction, controlled-environment agriculture, irrigation or water systems, agricultural processing, or comparable large-scale repetitive construction.
  • Experience coordinating civil, structural, mechanical, electrical, controls, equipment vendors, contractors, and internal technical teams.
  • Ability to read and challenge layouts, civil and structural drawings, equipment specifications, utility plans, controls documentation, and vendor submittals.
  • Strong field instincts, including understanding sequencing, crew productivity, logistics, work-front readiness, quality, and how design decisions affect installation.
  • Ability to keep parallel design packages, interfaces, decisions, and deadlines moving in an organized manner.
  • Willingness to spend significant time onsite during construction, commissioning, and startup.

Responsibilities

  • Own the engineering and field execution of systems that grow, cultivate, harvest, and deliver Lemna biomass to downstream processing.
  • Translate requirements from Engineering, R&D, Operations, Maintenance, and Food Safety into clear scopes and deliverables for external engineering partners and vendors.
  • Coordinate process, mechanical, piping, civil, structural, electrical, controls, utilities, and facility-infrastructure disciplines; establish ownership for system interfaces and drive technical decisions to closure.
  • Maintain engineering deliverables, decisions, dependencies, risks, and open items against the project schedule, and surface gaps early.
  • Support FEL, conceptual design, FEED, and detailed engineering for assigned systems and project packages.
  • Coordinate development and review of Basis of Design documents, equipment lists, utility requirements, layouts, specifications, drawings, and other core project deliverables.
  • Lead design reviews with subject-matter experts, Operations, and external engineers; challenge designs for safety, constructability, operability, maintainability, hygienic design, cost, and complexity.
  • Translate lessons from Ranchito into engineering standards and repeatable design packages for future facilities.
  • Develop technical scopes and bid packages for equipment, materials, and engineered systems; coordinate RFQs, technical evaluations, bid leveling, vendor selection, and technical alignment before purchase.
  • Manage vendor drawings, calculations, data, documentation, and interfaces with the broader facility design.
  • Track major equipment and materials from specification through fabrication, FAT, delivery, installation, and startup; identify schedule-driving decisions and long-lead packages and act before they become constraints.
  • Serve as the engineering point of contact during construction for assigned systems and scopes; coordinate RFIs, submittals, design clarifications, field changes, and vendor questions.
  • Maintain an onsite presence during active installation, walk the work, verify progress, identify constraints, and drive issues to resolution.
  • Resolve conflicts between drawings, equipment, contractors, and company requirements while preserving design intent.
  • Support quality reviews, mechanical completion, punch lists, system turnover, and documentation closeout.
  • Plan commissioning and startup before construction is complete; coordinate vendor startup requirements, FATs, SATs, commissioning, performance testing, and operator training.
  • Work with Operations and Maintenance to ensure systems are documented, tested, safe, and ready to operate; verify assigned systems achieve required capacity, performance, quality, and reliability.
  • Capture problems and lessons learned and turn them into improved standards for future facilities.
  • Own engineering for commercial greenhouse structures, coverings, ventilation, environmental controls, and modular grow infrastructure.
  • Own engineering for cultivation ponds or vessels, water circulation, nutrient delivery, level control, and water-management systems.
  • Own engineering for propagation, inoculation, crop-transfer, harvest, dewatering, and biomass-conveyance systems through the defined downstream handoff point.
  • Own civil preparation, grading, drainage, foundations, roads, and underground infrastructure required for upstream operations.
  • Own upstream mechanical, piping, electrical, instrumentation, controls, and supporting utilities.
  • Coordinate high-volume repetitive installation, including crew sequencing, work-front readiness, material staging, installation productivity, quality, and prevention of recurring defects.
  • Manage interfaces with downstream processing, site utilities, automation, laboratories, maintenance, and facility infrastructure.

Desired Qualifications

  • Owner-side project engineering or greenfield facility experience.
  • Direct experience building commercial greenhouses or modular agricultural production systems.
  • Experience with high-volume repetitive construction such as solar, pre-engineered metal buildings, modular structures, racking, or agricultural facilities.
  • Experience with pumps, piping, water treatment, drainage, environmental controls, instrumentation, automation, and biomass handling.
  • Experience measuring installation productivity and driving contractor recovery plans.

About the Company

Plantible Foods

B2B plant-based protein ingredients from lemna

Plantible Foods produces a plant-based protein ingredient called Rubi Protein for other food makers. It grows lemna, an aquatic plant, in its own aqua-farms to create a scalable, sustainable protein that is free from major allergens and has a neutral taste and color. The product is sold as an ingredient to food manufacturers for use in baked goods, plant-based meats, dairy alternatives, and nutritional supplements, enabling them to formulate new or improved plant-based products without worrying about allergen issues. The company differentiates itself by controlling its supply chain through in-house aquafarming and by delivering a neutral, versatile protein that can be incorporated across many product categories. Its goal is to meet increasing demand for sustainable, healthy foods by expanding production capacity and broadening its customer base among B2B food manufacturers.

Company size
51-200
Company stage
Debt Financing
Total funding
$108.7M
Headquarters
San Marcos, CA
Founded
2016

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