About the role#
This is a full-time, paid internship for Summer 2027 based in our Chesterfield, Missouri office. You will work on-site to support our structural engineering team by assisting with design tasks, project documentation, and technical modeling. This role is designed for students currently pursuing a degree in Civil Engineering or a related structural discipline.
What you'll do#
- Perform structural design for steel framing, concrete, foundations, and civil sitework.
- Develop structural analysis models using software such as STAAD or RISA.
- Assist senior engineers with concept development and construction document preparation.
- Detail structural framing systems for new and modified structures.
- Perform loading analysis for various structure types.
- Develop site civil designs, including grading, paving, and drainage.
- Build proficiency in AutoCAD and Revit to create project drawings.
- Respond to Requests for Information and field questions under senior supervision.
- Issue and track drawing submittals and revisions.
- Participate in project meetings and maintain awareness of project budgets and schedules.
- Apply knowledge of structural codes including IBC, ASCE, AISC, ACI, and AWS.
What you'll need#
- Current enrollment in a Bachelor of Science program in Engineering, such as Civil or Structural.
- Strong organizational skills to manage time and resources across multiple projects.
- Ability to adapt to changing project scopes and deadlines.
- Clear communication skills for coordinating with internal and external stakeholders.
- Diligence in note-taking and professional email correspondence.
- Commitment to producing accurate, error-free work that meets company standards.
Location & details#
- Location: Chesterfield, Missouri.
- Work Modality: This is an on-site, in-office position.
- Employment Type: Full-time, Summer 2027 term.
- Physical Requirements: The role requires sitting for extended periods and occasional lifting of equipment or files up to 50 lbs.
About Salas O'Brien
Salas O'Brien is an employee-owned engineering and technical services firm. Based in Irvine, California, the company employs over 2,300 people. It provides services across architecture, structural engineering, and energy efficiency. The firm works on projects related to sustainability and decarbonization.
How to get in at Salas O'Brien
Applying early at Salas O'Brien gives you a distinct advantage before the candidate pool grows too large. Intern Insider sends an instant alert the moment a role matching your target is published, so you can submit your application among the first. Getting your materials in front of a human before the pile grows is a practical way to manage the job hunt. You can also improve your response rates by reaching out to the recruiters behind these roles directly. Intern Insider surfaces the specific people managing these openings, allowing you to ask informed questions or request a referral. Connecting with the right person often makes the difference between a silent inbox and a conversation.



