Mission-Critical Mechanical Engineer – Onsite (Marshfield, MO)

STN Incorporated; Marshfield (MO); On-site; USD 90,000 - 115,000; Full time

Benefits offered by this job

Health coverage

FSA

401(k) Plan

Unlimited PTO

Holidays Paid

Cell phone allowance

Collaborative culture

Job summary

STN Incorporated is seeking an experienced Critical Infrastructure Mechanical Engineer in Marshfield, MO. You will support mission-critical facilities across design, construction, commissioning, operation, and ongoing maintenance.

You will lead RCAs, bolster reliability, and drive energy-efficient upgrades while partnering with operations, controls, and safety teams to ensure high availability and safety standards.

Qualifications

• Bachelor's degree in mechanical engineering or related field.
• 3+ years in industrial, commercial, utility, power, oil & gas, or data center facilities.
• Experience with mission-critical infrastructure design, operation, or construction.
• Ability to read drawings and codes; travel to project locations.

Responsibilities

• Provide full lifecycle mechanical support for mission-critical facilities from design to turnover.
• Lead RCA studies and corrective actions for critical equipment failures.
• Support operational excellence through procedures, training, and audits.
• Design upgrade projects to boost capacity, reliability, and energy efficiency.
• Collaborate with operations, construction, controls, EHS, and design teams.

Skills

Root cause analysis

Reliability engineering

HVAC systems

Chilled water plants

Data center infrastructure

Cross-functional collaboration

Analytical skills

Education

Bachelor's Degree in Mechanical Engineering

Tools

BMS

SCADA

EPMS

SQL

Data dashboards

Automation scripting

Job description

STN Incorporated is seeking an experienced Critical Infrastructure Mechanical Engineer in Marshfield, MO. You will support mission-critical facilities across design, construction, commissioning, operation, and ongoing maintenance.

You will lead RCAs, bolster reliability, and drive energy-efficient upgrades while partnering with operations, controls, and safety teams to ensure high availability and safety standards.