Engineering Talent That Drives Operational Safety, Innovation & Delivery in High-Stakes Environments

Oil, Gas & Petrochemical Staffing Solutions

In one of the world’s most technically demanding and safety-critical industries, securing the right engineering talent isn’t just a hiring decision—it’s a performance, safety, and profitability imperative.

At STSI, we understand that every pipeline expansion, plant retrofit, or turnaround project hinges on engineers who don’t just meet spec—they define it. That’s why we’ve spent over 25 years building a deep, specialized network of professionals who are fluent in the operational, compliance, and technical demands of the oil, gas, and petrochemical sectors.

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Your Workforce Partner in Safety, Reliability & Delivery

Full-Range Engineering Staffing Services

From upstream exploration and midstream infrastructure to downstream refining and chemical processing, STSI provides industry-vetted professionals across all phases of project execution—from FEED and EPC to commissioning and shutdowns.

Direct Hire

STSI delivers a streamlined, high-precision recruitment experience for direct hire placements—connecting clients with top-tier engineering talent through targeted sourcing, in-depth screening, and technical skill validation. Our expert team manages the entire process end-to-end, from the first conversation to final offer negotiation, ensuring every candidate is the right technical and cultural fit for long-term success.

Temporary / Contract

STSI’s temporary and contract staffing services offer agile, workforce-ready solutions tailored to your project timelines and peak production demands. We provide immediate access to pre-vetted, highly skilled professionals—ensuring you stay fully staffed, fully compliant, and fully focused on delivery. From short-term assignments to long-duration contracts, we help you optimize productivity without compromising on talent or timing.

Contract-To-Hire

STSI’s contract-to-hire service offers a low-risk, high-reward approach to permanent hiring—enabling employers and candidates to engage in a working relationship before making a long-term commitment. This flexible model allows for real-time evaluation of technical skills, team integration, and cultural fit, ensuring both parties are confident in the transition to full-time employment.

Payroll Services

Expand your workforce without the overhead of increasing full-time headcount. STSI’s payroll services take the complexity out of workforce management—handling payroll processing, tax compliance, and benefits administration across multiple states and jurisdictions with precision. Our clients trust us to deliver accurate, on-time payroll while navigating ever-changing regulations, so they can stay focused on their core business—without compromising compliance or efficiency.

Benefits Packages

STSI offers a competitive and comprehensive benefits package designed to attract and retain top talent. Our offerings include major medical health insurance (including short- and long-term disability), dental and vision coverage, pre-tax 401(k) plans, weekly direct deposit, and performance-based bonus incentives—all structured to support employee well-being and long-term engagement.

Industries We Support

Oil & Gas
Pipeline
Refinery
Petrochemical
Specialty Chemical
Chemical

Flexible Workforce

By Project
Peak Periods
Staff Augmentation

Skill Levels

Executive Management
Manager / Supervisor / Lead
Project Manager / Project Engineer
Engineer
Checker
Designer
CAD Operator / Drafter
Project Coordinator / Assistant
Superintendent

Roles We Recruit

Piping Designers
Mechanical Engineers
Pipe Stress Engineers
Project Managers
Project Engineers
Structural Engineers
Project Controls
Process Engineers
Purchasing Professionals
Quality Managers
AND MORE

Specialized talent for high-risk, high-compliance environments

Why Oil, Gas & Petrochemical Companies Choose STSI

Deep Industry Knowledge

We understand the technical demands of upstream, midstream, and downstream operations—including pipeline integrity, refinery turnarounds, plant expansions, and ASME code compliance. We staff with that complexity in mind.

Safety & Compliance-Ready Talent

Our candidates are qualified for work in hazardous environments and screened for site-readiness, OSHA training, and safety-first mindsets. We ensure alignment with PSM, API, and project-specific standards from day one.

Flexible Staffing for Demanding Projects

Whether it’s short-term outage support or long-term capital programs, we offer scalable workforce solutions—contract, contract-to-hire, or direct hire—tailored to your timelines, budget, and project phase.

Quick Turnaround, Zero Compromise

When downtime isn’t an option, you need talent fast—but not at the expense of quality. Our team delivers proven engineers, project controls professionals, and specialists with the certifications, tools, and field experience to make an immediate impact.

Close the Talent Gap with a Partner Who Gets It

Let's Build Your Team

Your projects are too important to be delayed by workforce gaps. Partner with STSI and experience what it’s like to have a recruitment team that feels like an extension of your business—committed to your success, driven by results, and built on integrity.

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Testimonials

Hear It From Our Clients

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I really appreciate the friendly manner that STSI approaches us with. The tone is cordial, and it’s appreciated when things are moving fast and we have to make tough decisions. I also appreciate the candor that I get from you and your team. You don’t pull punches, and I appreciate that as well – we don’t have time to “beat around the bush”, and the candid communications are much appreciated.

Piping Department Manager for Fortune 500 Engineering Consulting Firm

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STSI has provided excellent customer service to us and is our first go-to when we need top talent. STSI provides top candidates who are qualified for the niche roles and those candidates have great success in our organization. I am extremely grateful for STSI and their team of professionals, and am proud to partner with them. They are communicative, professional, and fast, and are a top firm in their industry. Thank you STSI!

HR Representative at Engineering Consulting Firm

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STSI have been a great partner. Their knowledge, dedication, and staffing experience that they bring to the table is a true testament to their success. They asked questions when it’s necessary and listens to what the program needs – whether it’s good or bad. Their willingness to adapt to changes is appreciated as the industry continuously shifts in different direction.

MSP Service Consultant for ENR Top 100 firm

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I appreciate all of the timely support STSI has provided for resource provisions.

Project Manager Petrochemical Refinery

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I’ve had nothing but positive experience working with STSI and I appreciate the attention to detail and personalized approach they have when it comes to helping us with our roles.

Agro-Industrial Manufacturing Client

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STSI are great partners to work with. The team knows the business they support and are always more than willing to help out with filling difficult positions. They provide valuable feedback to hiring managers regarding their job postings as well as recommendations for challenging to fill roles, using their “thinking outside the box” approach to problem solving. Last but certainly not least, they build relationships with their candidates that they submit and those candidates remain loyal to working for them – this to me shows that they ‘value their employees and really work to do what is best for them as individuals.

MSP Program Manager

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We appreciate working with the Team at STSI. We appreciate your professionalism and attention to detail. Thank you for the great candidates you send for our client.