Location: Brooklyn, NY

Principal Wastewater Process Engineer

Location: Brooklyn, NY
Job Type: Full Time
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About the role

As Principal Wastewater Process Engineer, you will serve as the primary technical authority on the integration of CREW’s process optimization & decarbonization solution within biological treatment at utilities across the country and world. You will go beyond the typical engineering design process to drive CREW’s technical strategy. This is a leadership-critical role designed for a senior expert who can interpret complex data to drive internal R&D and operations, while influencing external utility leadership.

You will play a pivotal role in accelerating the application of CREW’s technology by translating data from laboratory studies and full-scale deployments into rigorous, defensible technical insight. You will quantify and articulate the value CREW delivers through process intensification within biological treatment systems, and you will drive the internal data collection, analysis, and modeling required to support those conclusions and enable scale across municipal wastewater resource recovery facilities (WRRFs).

Through deep analysis of deployment data, you will generate the clear, credible interpretations needed to demonstrate our technology’s operational and economic value to utilities and other stakeholders via improved biological treatment, process intensification, and greenhouse gas removal. You will oversee experimental and analytical design for lab and field teams, ensuring that every experiment and data stream directly supports technical validation, operational readiness, and scale-up of CREW’s process optimization and decarbonization solutions. 

This position is a full-time role. Location will be onsite at our office in Brooklyn, NY or New Haven, CT.

Responsibilities

  • Lead Technical Strategy: Lead the technical strategy and implementation of CREW’s solution at the intersection of biological nutrient removal (BNR), chemical dosing, and downstream processes.
  • Expert Data Interpretation: Analyze operational data from CREW’s deployments, identify metrics to track performance, and drive actionable decisions toward operational improvements or new solutions.
  • Experimental Oversight: Direct the Tech and Operations teams on experimental protocols and data collection requirements to rigorously validate process performance.
  • Stakeholder Engagement: Serve as the subject matter expert in client engagements to support Commercial Team by providing the scientific rigor and operational confidence required to influence decision makers, engineering staff, plant supervisors, and operators.
  • Process Modeling & Design: Support the development of mechanistic process models and mass/energy balances, and while offering technical guidance for CREW’s Tech & Ops teams on process and process-mechanical problems.
  • Troubleshooting & Optimization: Lead the diagnosis of complex process issues in the field and propose robust solutions that maintain treatment efficiency and CO2 removal targets.
  • Technical Documentation: Author high-level technical reports, white papers, and design standards that solidify CREW’s position as an industry leader in process intensification and optimization.
  • Continuous Improvement: Mentor teammates and champion design standards to ensure lessons learned are captured across all global deployments.

Experience Requirements

  • Bachelor’s degree (required) in Environmental Engineering, Chemical Engineering, Civil Engineering, or a related field; a Master’s or PhD degree is a bonus.
  • 15-20+ years of experience in wastewater process engineering, biological treatment design, or related fields.
  • Strong understanding of wastewater treatment processes, including nutrient removal, solids handling, and pH and alkalinity control.
  • Experience developing and reviewing PFDs, P&IDs, site layouts, mass balance calculations, and process unit design.
  • Familiarity with process modeling tools (BioWin, SUMO, GPS-X, ASM libraries, or equivalent).
  • Comfortable working in a rapidly evolving startup setting and able to quickly synthesize new information to proactively adjust focus and maintain high-impact results.
  • Ability to travel periodically to project sites.
  • You practice extreme ownership (no task is too small).
  • You love being in the trenches with your team and working with high empathy.
  • You have a growth mindset.

Bonus Qualifications

  • Experience with capital improvements, facility expansions, or process upgrades at municipal WRRFs.
  • Experience in carbon capture, carbonate chemistry, or water-chemistry-based carbon removal technologies.
  • Field experience with pilot systems, process commissioning, or operational troubleshooting is highly desirable.
  • Experience integrating instrumentation, controls, and monitoring systems for process optimization.
  • Experience with CAD software, including AutoCAD, Civil 3D, or Revit.

Compensation

The annual salary range for this position is competitive and will depend on many factors including experience, education, and expertise. We offer a competitive benefits package with insurance, vacation, retirement, and equity options.

About the company

CREW’s technology and services make wastewater treatment cheaper and more efficient, while permanently sequestering CO₂. 

Leveraging advanced chemistry, natural minerals, and AI, we’ve developed and are deploying a category-defining process intensification technology, with decarbonization at its core. Today, we help wastewater treatment facilities and operators:

  • Stabilize pH & alkalinity 24/7 
  • Eliminate hazardous chemicals & cut costs 
  • Avoid $100M+ infrastructure upgrades 
  • Capture & Store CO2

We are currently deploying this technology across the US and Europe. In addition, we’ve signed $30M+ in carbon removal offtake agreements with leading corporations looking to meet their climate goals, supercharging geographical CREW’s expansion. 

CREW has offices and labs in New Haven, CT and Brooklyn, NY. 

CREW highlights

Commercial & Finance Intern

Location: Brooklyn, NY; Remote
Job Type: Part Time
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About the role

CREW Carbon is seeking a Commercial & Finance Intern to support our go-to-market and strategic finance efforts as we scale our carbon removal technology. This is a high-impact, entrepreneurial role at the intersection of finance, strategy, sales, and research. The ideal candidate is a current or recent graduate student with a background in consulting, finance, business development, or startup operations who thrives in fast-paced, mission-driven environments.

You’ll work directly with CREW’s commercial and finance  teams to support building sales and marketing assets, engaging in market research, and developing insights from financial models. You’ll also help implement scalable systems that improve how we operate across commercial and finance workflows.

Location will be onsite at our office in Brooklyn, or remote within the US.

Responsibilities

  • Conduct market, policy, and customer research to support business development and investment strategy.
  • Develop sales and marketing materials such as one-pagers, case studies, slide decks, and technical summaries.
  • Prepare and synthesize customer and partner pre-call research, including regulatory context, buyer needs, and project alignment.
  • Help implement efficient procedures and systems for tracking BD/investor pipelines, customer touchpoints, and external communications.
  • Contribute to competitive analysis, pricing strategy, and value proposition development.
  • Build and refine financial models to support project diligence and internal forecasting.

Required Qualifications

  • Currently pursuing or recently completed a graduate degree (e.g., MBA, MPP, engineering, finance), or a non-student with relevant experience in consulting, finance, or startups.
  • Previous experience in management consulting, investment banking, business development, or a fast-paced startup role.
  • Strong analytical and financial modeling skills, with attention to detail.
  • Exceptional communication skills – written, visual, and verbal.
  • Ability to structure and distill complex information for a range of audiences (investors, customers, partners).
  • Comfortable working with ambiguity and taking initiative to drive clarity and progress.
  • Passionate about climate innovation, decarbonization, and mission-driven work.

Bonus qualifications

  • Familiarity with climate tech, carbon removal, or environmental markets.
  • Proficiency in Excel, Google Suite, and Asana (or similar productivity tools).
  • Experience with CRM systems, such as Hubspot or Salesforce.

About the company

CREW’s technology and services make wastewater treatment cheaper and more efficient, while permanently sequestering CO₂. 

Leveraging advanced chemistry, natural minerals, and AI, we’ve developed and are deploying a category-defining process intensification technology, with decarbonization at its core. Today, we help wastewater treatment facilities and operators:

  • Stabilize pH & alkalinity 24/7 
  • Eliminate hazardous chemicals & cut costs 
  • Avoid $100M+ infrastructure upgrades 
  • Capture & Store CO2

We are currently deploying this technology across the US and Europe. In addition, we’ve signed $30M+ in carbon removal offtake agreements with leading corporations looking to meet their climate goals, supercharging geographical CREW’s expansion. 

CREW has offices and labs in New Haven, CT and Brooklyn, NY. 

CREW highlights

General Application

Location: Brooklyn, NY; New Haven, CT
Job Type: Full Time
Apply Now

Passionate about carbon removal and looking for an opportunity to contribute to meaningful climate solutions? We’re always on the lookout for driven, collaborative, and mission-aligned individuals to join our team. If you don’t see a role that fits your background but believe you can add value to CREW Carbon, we encourage you to submit a general application. Tell us about your expertise, interests, and how you see yourself contributing to our work. We review applications on a rolling basis as new opportunities arise!

Supply Chain and Logistics Manager

Location: Brooklyn, NY
Job Type: Full Time
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About the role

CREW Carbon is seeking an experienced Supply Chain & Logistics Manager to source cost-effective mineral feedstock and manage comprehensive logistics.  This role is ideal for someone with deep expertise in handling loose bulk minerals who can operate independently, translate technical requirements into supplier partnerships, and build operational systems capable of growing from tens of thousands to over 100,000 tons of material annually.

This position is a full-time role, with travel expectations to mineral suppliers and wastewater partners across the US. Location will be onsite at our office in Brooklyn, or remote within the US.

Responsibilities

  • Identify and establish partnerships with mineral suppliers to procure alkaline minerals, such as calcium carbonate, including leading contract negotiations with a data-driven methodology, financial expertise, and strong technical understanding.
  • Oversee the end-to-end logistics process on a project-by-project basis, including supplier coordination and delivery contractor management, ensuring timely and efficient delivery of materials.
  • Identify opportunities for process enhancements within the supply chain and implement solutions to increase efficiency and reduce costs.
  • Develop and maintain standard operating procedures to ensure consistency and quality in supply chain operations.​
  • By working with Product Team, develop dashboards and reporting tools to provide real-time visibility into logistics operations.​
  • Collaborate cross-functionally with technology, operations, finance, and commercial teams to align supply chain strategies with overall business objectives.
  • Conduct supplier and deployment site visits to review mineral products, and oversee initial deliveries, respectively.
  • Monitor market trends to anticipate pricing fluctuations and supply availability.

Experience Requirements

  • Bachelors in supply chain management or engineering (or similar field).
  • 8+ years of experience in loose bulk supply chain and logistics roles, preferably within the minerals or manufacturing industry.
  • Proven track record of successful negotiations with large-scale commodity suppliers.
  • Strong understanding of logistics processes, including transportation (bulk road, rail, and barge), storage, and inventory management.
  • Excellent analytical, project management, problem-solving, and communication skills.
  • Financial acumen, including budgeting, cost control, and supply chain analytics.
  • Proficiency in logistics and supply chain management software.
  • Startup mindset where adaptability, creativity, agility, and execution are keys to success.
  • Strong desire to fight climate change.

Bonus qualifications

  • Understanding of mineral feedstock materials handling systems. 
  • Prior work at a specialty mineral provider.

Compensation

The annual salary range for this position is competitive and will depend on many factors including experience, education, and expertise. We offer a competitive benefits package with insurance, vacation, retirement, and equity options.

About the company

CREW’s technology and services make wastewater treatment cheaper and more efficient, while permanently sequestering CO₂. 

Leveraging advanced chemistry, natural minerals, and AI, we’ve developed and are deploying a category-defining process intensification technology, with decarbonization at its core. Today, we help wastewater treatment facilities and operators:

  • Stabilize pH & alkalinity 24/7 
  • Eliminate hazardous chemicals & cut costs 
  • Avoid $100M+ infrastructure upgrades 
  • Capture & Store CO2

We are currently deploying this technology across the US and Europe. In addition, we’ve signed $30M+ in carbon removal offtake agreements with leading corporations looking to meet their climate goals, supercharging geographical CREW’s expansion. 

CREW has offices and labs in New Haven, CT and Brooklyn, NY. 

CREW highlights: