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Sr. Maintenance Tech

Job in Saint Louis, St. Louis city, Missouri, 63150, USA
Listing for: Ostara
Full Time position
Listed on 2026-01-07
Job specializations:
  • Maintenance/Cleaning
    Maintenance Technician / Mechanic
Job Description & How to Apply Below
About Ostara

Ostara is passionate about changing the way the Ag and T&O industry thinks about phosphate management. Our continuing mission is, and will remain, "Feeding the World While Protecting It."

We believe that passionate people can make a real difference and we are building a culture around innovation, sustainability, efficiency, nimbleness, honesty, compliance, and a sense of urgency to make a positive difference and create real value. Ostara's Crystal Green fertilizers are the first granular phosphate fertilizers to release nutrients in response to plant demand. Using Crop Driven Release, Crystal Green is proven to increase yields, enhance soil health and significantly reduce phosphate tie-up and runoff, thereby improving food security while protecting local waterways from nutrient pollution.

Position summary

The Senior Maintenance Technician maintains electrical and industrial equipment, identifies electrical problems, performs instrumentation calibrations, and assists with PLC troubleshooting. This technician is expected to be an electrical subject matter expert on site and assists maintenance leadership executing the preventative maintenance strategy. Maintenance of mechanical systems is also required.

Essential functions

Troubleshoots and repairs electrical/mechanical issues.

Maintains, replaces, and diagnoses all instrument/electrical components in and around the manufacturing site

Performs vibration data collection and analysis of equipment, keeps historical and updated database for all vibration data, and reports any inconsistencies to Management and update CMMS

Performs balancing of plant equipment, keeps historical and updated database for all balancing, and reports and inconsistencies to Management and update CMMS

Performs UT inspections of equipment and maintains UT database.

Performs thermography inspections of equipment.

Performs maintenance technician duties as required

Installs and repairs various mechanical equipment in a heavy industrial setting

Uses predictive tools and equipment in troubleshooting and repair processes.

Ability to perform alignment of equipment i.e. shaft, bearing, motors.

Stays informed of with all safety policies, guidelines, and procedures at all times

Trains and mentors other technicians

Backfills for Maintenance Supervisor when necessary and serve in a leadership capacity on assigned tasks.

Addresses and/or responds to all safety hazards, near misses and work-related incidents immediately

Offers suggestions and supports in efforts to improve the safety culture of Ostara

Other duties as assigned

Required skills/abilities

Excellent verbal and written communication skills

Excellent organizational skills and attention to detail

Proficient in Microsoft Office Suite or related software

Ability to read blueprints and schematics for electrical, hydraulic, and pneumatic systems

Ability to safely use hand tools, torches, and welding equipment, pneumatic and/or electric tools and precision measuring tools to make repairs or replace equipment

Rotating Equipment experience (rotary kiln, granulator, etc.) preferred

Ability to troubleshoot mechanical, pneumatic, electrical, electronic equipment and instrumentation to make appropriate repairs, calibration, recommendation and or replacement

Ability to safely move in and through work areas, including climbing stairs, maintaining good balance, being mentally alert, having good visual acuity and safety working at heights

Ability to safety work in and around heavy industrial environment, including moving objects, concentrated chemicals, and transport vehicles

Education/experience

At least 5 years experience in a heavy industrial maintenance technician roles

Prior lead or experience training others highly desired

Category I vibration analysis certification desired

Category I Thermography certification desired

Category I UT (Ultrasonic) certification desired

Welding Certification:
Stick and MIG required

PPE requirements

Safety glasses with side shields, hearing protection, hard hat, steel/composite toe boots

Occasional use of a respirator

Other PPE as required per task

Physical requirements and work environment

While performing the duties of this job, the…
Position Requirements
5+ Years work experience
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