Sigma Engineers and Constructors
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Sigma Engineers and Constructors-Engineering differently since 1987. Multi-discipline engineering service specializing in petrochemical and fertilizer plants
Sigma Engineers and Constructors is a professional engineering company that provides a complete range of engineering, design, and construction services for the petrochemical, refining, polymer, and utility industries. SEC has extensive experience in detailed engineering, design, and drafting for a wide range of disciplines including civil, structural, architectural, process and process control, mechanical, piping, electrical, instrumentation and automation, safety, and environmental. SEC also has extensive experience in chemical reactions, cracking, fractionation, heat transfer, environmental abatement, fluid flow, gas compression, petrochemical storage, process safety, solids handling, waste treatment, and utility infrastructures. Our reputation for safely delivering quality projects on time and on budget is well recognized in the industries we serve. We have proven expertise in executing various projects, developing strong relationships with our clients and providing innovative engineering solutions to all we serve. Our quick response time and clear yet concise communication allows us to efficiently complete projects. COMPANY OFFICERS:
Robert B. Olivier, P.E., President
D. Todd Drummond, P.E., Vice President
Chris Kafkallides, P.E., Vice President
Our approach to “work life balance” is very literal😂
A sweet little Wellness Week challenge!🍭🍫
09/24/2026
A little behind the scenes of who’s behind the work.👷♂️
They cleared the board. Enough said.👀
Small Feel. Big Impact.
What does the “small company feel” actually look like at Sigma? It’s knowing the people you work with, having access to leadership, and building relationships that go beyond your project team.
09/21/2026
Celebrating TENure at Sigma!🎉
Last Friday, we celebrated the employees who have reached 10+ years with Sigma at our annual TENured event.
We’re so grateful for the years of dedication, experience, and impact each of them continues to bring to our team. Here’s to the people who have helped make Sigma what it is today!💙
09/18/2026
A great day connecting with the next generation of talent! 💜
Our team had the opportunity to attend LSU’s Career Fair and meet so many incredible students, hear about their goals, talk about the many different disciplines, services and opportunities we offer, and share what life at Sigma looks like!
Thank you to everyone who stopped by our booth and took the time to connect with our team. We enjoyed meeting you and being back on campus!
Think you can spot the difference??👀
They may look similar at first glance, but when it comes to steel connection methods, the details matter.
Our engineers know the difference. Take a closer look and see if you do too!
Three words. One shared culture.
We asked our team to describe Sigma in just 3 words, and a few kept coming up: family, fun, and competitive.
Different people, different roles, but a shared perspective on what makes Sigma, Sigma.
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Website
Address
11585 Lake Sherwood Avenue N
Baton Rouge, LA
70816
Opening Hours
| Monday | 8am - 5pm |
| Tuesday | 8am - 5pm |
| Wednesday | 8am - 5pm |
| Thursday | 8am - 5pm |
| Friday | 8am - 5pm |