38 Results for

Relay Technician Jobs in Saint Louis, MO

Jobs

Maryville, IL30+ days ago

Every day, we deliver electricity to 1.2 million electric and 816,000 natural gas customers in central and southern Illinois. Install, commission, test and maintain the following equipment: Electro-mechanical and microprocessor based protective and control relays.

Overland, Missouri30+ days ago

Overland, Missouri19 days ago

St. Louis, MO14 days ago

At Atlas, we're providing services that enable communities to flourish and thrive, and if you’re looking for a Construction Materials Testing Technician role ready to perform construction-related field tests and committed to doing meaningful work, then this is your moment. We trust our people to do great work and live fulfilling lives, and we provide resources that care for our people, both at work and in life: Health & Wellness: We offer medical, dental and vision coverage with multiple plan options, including no-cost employee-only medical coverage.

St Louis, MO29 days ago

$25–$50 Per Hour

On behalf of our client, we are seeking an Alternative Fuels Technician to join a growing team dedicated to designing, building, and maintaining advanced renewable and alternative energy fueling infrastructure. Perform scheduled preventive maintenance, inspections, and repairs on CNG and RNG station equipment, including compressors, dispensers, pumps, actuators, dryers, and piping systems.

Troy, IL30+ days ago

Animal restraint, triage of incoming patients and emergencies, administration of vaccines, animal husbandry, collection of lab samples, diagnostic imaging, management and nursing care of hospitalized cases with varying degrees of stability, administration of medications, effective communication with staff and clients, surgical preparation, assistance in anesthetic management. Assist CSR’s with outpatients and hospitalized patients from admission to discharge with clerical and administrative work, including knowledge of patient folders, vaccine schedules, proper phone call etiquette, and other front desk procedures.

Bridgeton, MO30+ days ago

Reading Schematics, Blueprints, and a Voltage Meter (You need to have a solid understanding of 24v, AC/DC, 110V, Transformers, Conductors, Relays, Single and Three-Phase Motors, and 480V for this to be the right fit for you.). Inspecting, Repairing, and Performing Maintenance on All Manufacturing Machinery (This looks like hydraulic, pneumatic, electrical, control, and conveyor belt systems.).

New!

Pacific, MO4 days ago

This role places a strong emphasis on electrical systems, controls, and diagnostics, and will play a critical role in minimizing downtime and supporting continuous improvement initiatives across the plant. This position is ideal for a hands-on technician with deep electrical experience who can independently diagnose issues, support automation systems, and contribute to long-term equipment reliability.

Hazelwood, MO30+ days ago

The primary role of the Maintenance Technician is to provide competent & effective Electrical and Mechanical Maintenance support to the Plant and Facility operations in a safe manner. The following list that follows is representative of the knowledge, skill and/or ability required: 2+ years of experience working in the food manufacturing industry.

Hazelwood, MO30+ days ago

Sauget, Illinois30+ days ago

Filtration Group has the broadest portfolio of solutions in the industry and has had a particular focus on building a leading platform of solutions focused on the Life Sciences and Indoor Air Quality end markets which are rapidly growing in the current market environment. With a passionate workforce, global footprint and world class engineering and manufacturing capabilities, we are driving innovation and developing solutions across a broad spectrum of applications in the fast-growing and rapidly-evolving global filtration industry.

New!

St. Louis, MO2 days ago

Body/component swaps: radiators, transmissions, surge tanks, engines, A/C evaporators, passenger doors (door repairs handled in the main shop). Agency supplies tools for minor work; paint limited to touch‑ups on minor body work, steering wheels, step wells, wheels, bumpers, and reflectors.

New!

SAINT PETERS, MO5 days ago

Six (6) year’s experience, four (4) of those in FedEx Industrial Maintenance or external supporting similar material handling systems by demonstrating subject matter expertise in mechanical power transmission, electrical and PLC/Controls and advanced welding/fabrication skills through job experience, related military experience and/or related education required. Provides basic preventative and predictive maintenance and repair of material handling systems in mainly mechanical power transmission and will work to build stronger skills in electrical and PLC/controls and welding/fabrication.

St. Louis, MO30+ days ago

$108,000–$130,000

Understands basic refrigeration cycle to include identifying components in refrigeration circuit, understanding how each component works, diagnosing problems in the refrigeration circuit, using manifold gauge set, pressure/temperature chart and temperature measuring devices for routine maintenance and to troubleshoot. Summary of Job: Primarily responsible for performing repairs and maintenance to a variety of equipment including refrigeration, air conditioning, electric motors, heating units, heat pumps, compressors, light commercial furnaces, boilers, burners, intake and exhaust fans, economizers and humidifiers.

New!

St Charles, MO2 days ago

Regular standing, walking, climbing, pushing/pulling, grasping, kneeling, squatting, bending, twisting/turning, reaching above shoulder. Identify and correct PLC faults on Allen‑Bradley SLC‑500 and CompactLogix controllers.

New!

St. Louis, MO1 day ago

$80,000–$180,000 Per Year

Work within a project team to create all design documents and drawings for a project, including creating wiring diagrams from schematics, generating bills of materials, and applying field mark-ups of project as-built drawings with minimal supervision. Built on 50 years of experience handling large scale complex projects; our client is unique in that they are a turnkey Engineering, Construction, and Testing company that specializes in medium and high voltage electrical infrastructure.

St. Louis, MO30+ days ago

Full-time

As an award-winning, woman-owned, minority-owned boutique engineering firm, we’ve built a reputation for delivering world-class work while creating a culture that feels like home. Every year, we dedicate paid time off for volunteering and encourage our team to use their talents to make a difference whether that’s mentoring students, serving local nonprofits, or getting hands-on in community projects.

St. Louis, Missouri30+ days ago

$107,000–$165,000 Per Year

Develop substation layout drawings including, plan and elevations, yard layouts, grounding, grounding details, raceway, raceway details, control building layouts, cable lists, and material lists on new and existing substations. Our team excels in providing solutions for power transmission, distribution, and renewable energy, utilizing advanced technologies and creative problem-solving to meet today’s diverse energy needs.

St. Louis, Missouri30+ days ago

$77,000–$155,000 Per Year

St Louis, MO30+ days ago

This role focuses on delivering electrical protection & control and physical substation designs, ranging from small distribution facility upgrades to large transmission projects. We are recruiting on behalf of a global engineering and consulting client for an Electrical Engineer – Substation to support projects across the U.S. and internationally.

Clayton, Missouri30+ days ago

$134,546–$205,557 Per Year

AI & Automation at Sargent & Lundy: In this role, we expect people to be willing or able to lead others who use modern tools: You are expected to lead others in taking engineering problems from issue to solution by setting expectations for using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs. Leaders in these roles often direct automation and process-improvement work, for example, how teams automate calculations, summarize technical documents, or generate design documentation and guiding when and how AI or agentic AI tools are used while ensuring results are checked.

Clayton, Missouri30+ days ago

$74,353–$113,595 Per Year

AI & Automation at Sargent & Lundy: In this role, we expect people to be willing or able to solve problems using modern tools: You are expected to take engineering problems from issue to solution using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs. Many engineers in these roles build or use automation to create calculations, summarize technical documents, or draft design documentation, including appropriate use of agentic AI tools, with strong engineering judgment and verification of results.

Clayton, Missouri30+ days ago

$100,019–$152,807 Per Year

St. Louis, MO30+ days ago

Full-time

Louis and a woman-owned, minority-owned boutique firm, delivering impactful engineering solutions in a workplace where people feel valued and empowered to grow. Every year, we dedicate paid time off for volunteering and encourage our team to use their talents to make a difference whether that’s mentoring students, serving local nonprofits, or getting hands-on in community projects.

New!

Saint Louis, MO2 days ago

Full-time

What You’ll DoAs a Design Engineer III, Substation Engineering, you will play a key role in delivering high-quality substation engineering solutions for clients across the U.S. You’ll contribute to complex energy infrastructure projects while collaborating with multidisciplinary teams and building your path toward technical leadership. EPS Engineering Services, a member of the Asplundh federation of companies, is hiring for a Design Engineer III, Substation Engineering, for our Maryland Heights, MO location!

Clayton, MO30+ days ago

$131,960–$205,330 Per Year

As a Project Lead Electrical Engineer, you will be responsible for guiding junior and senior-level engineers and designers in protection and controls engineering design efforts, including providing guidance with the coordination of detailed design phases for all aspects of the engineering work. As a Project Lead of an engineering and design team, you will work on a wide range of substation modifications and upgrades to support client requirements and reviews including creating calculations, document designs, and specifications.

Clayton, MO30+ days ago

$72,690–$106,250 Per Year

Responsibilities: This position offers you the opportunity to work in a project team environment with other engineers and designers involved in the detailed electrical design and project management of high voltage substation projects. Ability to work with Designer to develop substation single line diagrams, relaying & metering diagrams, DC schematic diagrams, substation plan & sections, grounding plans, etc.

Clayton, MO30+ days ago

$95,840–$147,870 Per Year

This position offers you the opportunity to work in a project team environment with other engineers and designers involved in the detailed electrical design and project management of high voltage substation projects. Ability to work with Designer to develop substation single line diagrams, relaying & metering diagrams, DC schematic diagrams, substation plan & sections, grounding plans, etc.

Creve Coeur, MO30+ days ago

The ideal candidate has significant working experience and knowledge of Protection & Control (P&C) design concepts, relay setting calculations / setting file development, relay manufacturer software platforms, and power system analysis & modeling software. Most positions - depending on the nature of work performed as defined by the division - will typically require incumbents to have professional registration or licensure in their designated home office country, or be in active pursuit* of such registration (i.e. Professional Engineer License).

Chesterfield, MO12 days ago

$115,000–$140,000 Per Year

Responsible for engineering physical design and technical support for projects relating to new and existing Bulk, Distribution, and Customer Substations (typically involving voltages up to 138kV). Occasionally provide drawings including one lines, panel layouts, schematics, wiring, and interconnection diagrams for new and existing substations based on scope requirements.

St. Louis, MO30+ days ago

Full-time

This role is ideal for May 2026 Electrical Engineering graduates who are looking to launch their career in power and substation design with hands-on experience, mentorship, and real project exposure starting Summer 2026. Create and modify one-line diagrams, three-line diagrams, control schematics, wiring diagrams, relay panel arrangements, and cable schedules for high-voltage substations (32.4–230kV).

St. Louis, MO30+ days ago

Full-time

Clayton, MO30+ days ago

$92,270–$140,380 Per Year

Other responsibilities include, but are not limited to: Performs technical review of project team's comments on vendor design deliverables (ensuring compliance with specifications), coordinates the incorporation of those comments, and consolidates and resolves project team comments. As a Substation Physical Project Designer, you will be working in a project team environment with engineers and other designers involved in high and extra high voltage substation design.

Clayton, MO30+ days ago

$82,120–$128,570 Per Year

As a Substation Physical Designer, you will be working in a project team environment with engineers and other designers involved in high and extra high voltage substation design. The total compensation package for eligible positions will include a base salary or an hourly rate and a comprehensive benefits package, reflecting our commitment to rewarding performance and supporting the overall well-being of our employees.

Overland, Missouri30+ days ago

Responsibilities: Design various electrical projects including creating electrical schematics and wiring diagrams, electrical power systems, plot plans, equipment elevations, sections, and details, lighting systems, and site and facility designs. At Electric Power Systems, we specialize in electrical acceptance testing, commissioning, and maintenance testing for a wide range of clients including Utility, Generation, Renewables, Industrial, Transit, Data Centers, and Commercial Facilities throughout North America.

Clayton, MO30+ days ago

$142,710–$215,440 Per Year

This position will offer you the opportunity to manage and further grow a project team consisting of engineers and designers involved in the design, modification, and analysis of new and existing high voltage substations. The total compensation package for eligible positions will include a base salary or an hourly rate and a comprehensive benefits package, reflecting our commitment to rewarding performance and supporting the overall well-being of our employees.

Maryland Heights, Missouri30+ days ago

Guide the Engineering team in the execution of engineering activities such as: Physical substation design, including yard layouts, plans, sections and details, grounding, lightning protection, control building arrangements, interior and exterior raceways, auxiliary AC/DC power systems, and associated bills of material. They will work and lead multi-disciplined project teams to create industry-leading designs for new projects, alterations, and redevelopments on various projects, including distribution, generation, institutional, industrial, and manufacturing facilities.

Overland, Missouri30+ days ago

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Relay Technician Jobs in Saint Louis, MO

Jobs

Substation Relay Technician 1st 9 monthsAmeren

Relay Technician IIEPS

Sr. Relay TechnicianEPS

Construction Materials Testing TechnicianAtlas

Alternative Fuel TechnicianTalentSphere

Certified Veterinary TechnicianHawthorne Animal Hospital Ltd

Manufacturing Maintenance TechnicianMidwest Block & Brick

Lead Maintenance TechnicianWalker Products Inc.

Maintenance Technician (Days @ 6am - 6pm)Nature's Bakery

Maintenance Technician (Overnight) 6pm - 6amNature's Bakery

Automation / Maintenance TechnicianFiltration Group Corp

Heavy‑Duty Bus and Coach Technician — Drivetrain & A/C SystemsBi-State Development (BSD)

Maintenance Technician IFedEx

Commercial HVAC Service TechnicianHoffmann Brothers

Electromechanical Service Technician — PLC/VFD SystemsNatoli Engineering

Substation EngineerROI Agency

Senior Electrical Engineer – SubstationLUZCO Technologies

Sr. Substation EngineerGFT.

Substation Engineers (Electrical Engineers)GFT.

Electrical Engineer - SubstationGables Search Group

Lead Substation Engineer 2 - GridSargent & Lundy

Substation Engineer 3 - GridSargent & Lundy

Senior Substation Engineer 2 - GridSargent & Lundy

Electrical Engineer 2 - Physical SubstationLUZCO Technologies

Design Engineer III, Substation EngineeringAsplundh Engineering Services, LLC

Lead Substation Electrical Engineer 2 - GridSargent & Lundy

Substation Electrical Engineer 3 - GridSargent & Lundy

Senior Substation Electrical Engineer 2 - GridSargent & Lundy

Senior Power System Protection Engineer Job Details | Black & Veatch Family of CompaniesBlack & Veatch

Substation Design Engineer-Physical DesignUtilitra

Electrical Engineer 1 - May 2026 GraduateLUZCO Technologies

Electrical Engineer 2LUZCO Technologies

Substation Physical Project Designer - GridSargent & Lundy

Senior Substation Physical Designer 2 -- GridSargent & Lundy

Substation Designer IIVoltyx

Substation Engineering Consultant 2 - GridSargent & Lundy

Principal EngineerVoltyx

Substation Designer IIEPS

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