Jobs in the United States

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Process Engineer
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- $85,000 to $110,000 USD / year
…seeds before they are planted, increasing yields, reducing in-field waste, and improving food safety. Clean Crop’s Clean Current technology combines electricity and food-grade gases to…
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Clean Crop Technologies, Inc.

Process Engineer

Hennessey, OK, United States

$85,000 to $110,000 USD / year

Apply on job-boards.greenhouse.io About employer

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Job details

Pay: $85,000 to $110,000 USD / year
Posting language: English
Posted: Nov 12, 2026

Original job description

Clean Crop Technologies, Inc. (“Clean Crop”) stops crop loss at the source, removing pathogens from seeds before they are planted, increasing yields, reducing in-field waste, and improving food safety. Clean Crop’s Clean Current technology combines electricity and food-grade gases to create cold plasma, inactivating a broad spectrum of contaminants from seed surfaces in a dry, automated, and residue-free process. We are building a dynamic team of engineers and technicians, administrators, and scientists with a passion for innovation, experimentation, pushing the envelope of what's possible, and a hunger to work at an agile start-up. If that sounds like you, we'd love to talk!

About Clean Crop

Clean Crop Technologies builds domestic supply chains for specialty crops. We work with growers from seed through processing to deliver food-grade products to buyers who have historically relied on imports. Our first crop, mung beans, is in commercial production, and we are expanding into additional pulses and grains.

Our commercial processing operation runs at a partner mill campus in Hennessey, Oklahoma, where we receive, clean, sort, grade and store products alongside our operating partner. Our R&D and pilot operations are in Holyoke, Massachusetts. We are a venture-backed company.

About This Role

We are looking for a Process Engineer to own the technical performance of our mung bean processing line in Hennessey. You will set and calibrate the cleaning, optical sorting and gravity equipment to each customer specification, trace yield loss and grading defects back to their cause, and run the trials that correct them. You will keep the equipment reliable through preventive maintenance and small capital projects, and design how each new pulse and grain will run on the line as we expand. You will work on site alongside our Production Manager, our QA Manager and customer partners. You will also work closely with our Product team in Massachusetts.

What you can expect from this opportunity:

Process Ownership

Own the facility layout and equipment performance
Set, document and maintain equipment settings for each crop and customer specification, and adjust them as incoming lots vary
Track yield, throughput, OEE and downtime, find the causes of loss, and run the trials that improve them
Troubleshoot off-spec product with the QA Manager, trace the cause back through the process, and put the fix in place
Write and keep current the SOPs, work instructions and process documentation the floor team runs from

Equipment and Reliability

Build and run the preventive maintenance program for the Hennessey equipment, and manage spare parts and service vendors
Diagnose mechanical, electrical and controls issues on sorters, augers, elevators, bins and conveyors, and fix them or direct the fix
Scope, justify and manage small capital projects, from equipment selection through installation and commissioning
Bring new crops onto the line: define the process, identify equipment changes and run first production lots
Workflow design and documentation- manage how product will move through the facility
Facilities management- install new unit ops and vendor/contractor management

Food Safety and Site Operations

Support SQF certification and ongoing compliance, including sanitation, traceability and audit readiness
Lead equipment-related safety practices on site, including lockout/tagout, guarding and dust control
Work with our operating partner at the mill on shared equipment, utilities and site improvements, including the technical scope for any changes
Build and sustain a 5S program across the processing line and storage areas, with visual standards and regular audits that keep equipment accessible, reduce changeover time between crops and support SQF readiness

We'd love to hear from you if:

You have 4+ years as a process, manufacturing or plant engineer in food, grain, seed, feed or another bulk solids operation
You have hands-on experience with cleaning, sorting, milling or material handling equipment, and are comfortable working on the floor
You use data to improve a process: you have tracked yield, throughput or OEE and can point to a change you made that moved it
You can read mechanical and electrical drawings and troubleshoot equipment and basic controls
You write clear SOPs and can train a floor team to follow them
You have a degree in chemical, agricultural, biological, food or mechanical engineering, or equivalent experience through a technical program and time on the plant floor
You do well on a small team where you will often be the person who figures it out, and you know when to call a vendor or a peer who has solved it before
You are willing to relocate to, or already live within commuting distance of, Hennessey, Oklahoma

Not required, but we'd be thrilled to see:

Experience processing pulses, specialty grains or seed (mung beans, lentils, chickpeas, quinoa or similar)
Optical sorter setup and calibration (Bühler, Satake, TOMRA, Key Technology or similar)
SQF, BRCGS or other GFSI food safety program experience
Commissioning a new line or facility
PLC or HMI experience

Why you should consider us:

You will own the process at our main commercial site, with direct influence on how it runs and where we invest
You will bring new crops onto the line as the company grows, so the role keeps expanding
You will work with a small, hands-on team that values solving the customer's problem over using a particular technology
You will have ownership, autonomy and equity participation in an early-stage company

Compensation and Benefits:

Our salary range for this role is $85,000 to $110,000 annually, based on experience, with early-stage equity participation. Benefits include medical, dental and vision coverage, life and long-term disability insurance, a 401(k), and paid time off.

Clean Crop is proud to be an equal opportunity employer and considers all qualified candidates regardless of race, ancestry, color, gender identity or expression, sexual orientation, religion, national origin, citizenship, disability, Veteran status, marital status, or any other protected status. If you have a special need or disability that requires accommodation, please let us know.

Direct applications only. We do not accept candidates submitted by staffing agencies or third-party recruiters.

Apply on job-boards.greenhouse.io About employer

More about this job

Skills

Food safety
Cleaning
Preventive maintenance
Maintain equipment
Troubleshoot
Documentation
Workflow
SQF
Regulatory compliance
Sanitation
Lockout/tagout
Material handling
Mechanical engineering
GFSI
PLC
HMI

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Work requirements

Jobs in the United States