About SustainologySustainology Climate Solutions is building the Renew Hope Initiative—modular biogas systems that convert organic waste into clean biogas + nutrient-rich biofertilizer, designed for reliable deployment in real-world, low-infrastructure settings.The roleWe’re hiring a Biogas Systems Subject Matter Expert (SME) with deep, hands-on experience designing, building, commissioning, and troubleshooting biogas digesters across multiple system types and scales (including flexi/bag digesters).This is a remote, contract role with periodic on-ground support for commissioning, audits, and troubleshooting.Key responsibilitiesLead technical design reviews and optimization for biogas digesters across small, medium, and hub-scale deploymentsProvide sizing and engineering guidance: feedstock handling, HRT/OLR, mixing, piping, valves, safety, gas storage/pressure controlRecommend practical solutions for H₂S and moisture management, leak prevention, flame arrestors, PRVs, condensate traps, and safe appliance deliveryCreate commissioning plans and field-ready documentation: SOPs, checklists, troubleshooting guides, operator trainingSupport vendor selection, QA/QC, BOM/BOQ validation, materials compatibility, and acceptance testingTroubleshoot operational issues (remote-first, site visits as needed)Must-have qualifications8+ years experience in building biogas digester systems (design + build + commissioning)Proven expertise across multiple digester types such as flexi/bag, fixed dome, floating drum, plug-flow, CSTR, CBG Plants, modular/containerized systemsStrong anaerobic digestion fundamentals and practical engineering judgmentExperience with Waste Handling, Management, and Treatment for optimised gas productionAbility to produce/validate drawings and documentation (PFD/P&ID, layouts, specs, BOQ)Strong safety mindset: methane handling, H₂S risk, pressure systems, confined spaces, and field protocolsNice-to-haveExperience delivering large-scale biogas projects in Africa / South AsiaDigestate handling knowledge (separation, storage, application protocols)Familiarity with sensors/monitoring and field data capture (flow meters, pressure logging)What we offerRemote work with flexible hoursHigh ownership and real-world impact at scaleCompetitive consulting rate aligned to experienceOpportunity to influence a flagship biogas roll-out program
Job Title
Biogas Systems Engineer - Design & Commissioning (Remote)