Impactful Water & Wastewater Engineering Intern — Summer 2027

Water & Wastewater Engineering Intern - Summer 2027 Job Category : Intern Requisition Number : INTER004284 Apply now Posted : October 19, 2026 Full-Time On-site Locations Showing 1 location Roseville, CA 95678, USA Description At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future. Building for the long-term means that all our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career—and they’ll receive great total rewards along the way. About Us: Founded in 1975, Salas O’Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow’s requirements are today’s opportunities, and we are here to design lasting solutions for pressing challenges. We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more. This position is focused on water and wastewater engineering. Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day. Job Summary: We are looking for an Engineering Intern interested in gaining real-world experience working on water, wastewater, and civil infrastructure projects. The candidate will gain practical experience that goes beyond the classroom by working alongside experienced engineering and technical professionals on active projects. Interns will have opportunities to support project design, engineering calculations, field investigations, construction support, and preparation of plans, reports, and other project deliverables. Specific engineering tasks will vary in nature and complexity and may include but are not limited to supporting development of design engineering documents (plans, specifications and calculations), performing basic engineering calculations and research, reviewing project information, and assisting with field investigations and site visits. Work may also include supporting development of detailed cost analyses and site infrastructure design, construction support, and evaluation of existing water and wastewater facilities. Responsibilities: Assist our engineering teams in various phases of project development, from concept design to implementation and testing. Support engineering and drafting personnel in creation of deliverables that meet or exceed the customer’s expectations and standards. The successful candidate will have excellent technical writing skills that will be applied in writing engineering reports, preliminary design reports, memos, and other technical documentation. Assist with water and wastewater system design, including preparation of plans, calculations, details, and technical reports under the direction of experienced engineers. Assist with site visits, field investigations, construction observations, and collection of project information. Assist with reviewing contractor submittals, project documents, and other technical information as directed. Perform basic calculations and research related to water distribution, wastewater collection, pumping, storage, and other civil infrastructure. Assist with preparing exhibits, spreadsheets, tables, and other project deliverables. Work independently but be quick to ask questions and draw upon the best internal resources to meet customer requirements accurately and efficiently. Maintain accurate and comprehensive project documentation, including design specifications, equipment manufacturers information, and progress reports. Communicate effectively in person and in writing to keep project teams well informed of pertinent information in a timely manner. Support implementation of Project Management Plans (PMP) and Quality Control (QC) programs as assigned. Communicates design concerns or input to Engineer of Record (EOR) and/or Design Lead and Project Manager. Perform general duties as assigned which may include project research, minor drafting tasks, technical report writing, populating databases, and performing engineering analyses. Qualifications: Must be currently enrolled in a Civil and/or Environmental Engineering program at a four-year ABET university or college with preferred targeted graduation date within 1 year (preferred). Will consider candidates who are graduating within 2 years. Must be able to work part-time, maximum 25 hours on average each work week and have reliable transportation. Specific schedule and hours will vary according to candidate school schedule and will be discussed during interview process. During the school breaks, additional work hours may be available. Proficient in Microsoft 365 applications Knowledge of ASCE, AWWA, FDEP, ICC, ASTM, and/or UFC codes is a plus. Experience with Civil3D, AutoCAD, Revit, Bluebeam Revu, or other modeling/drafting software is a plus. Strong interest in water, wastewater, and/or civil infrastructure engineering is preferred. Ability to communicate effectively, work as part of a team, and learn from experienced engineers and technical staff. Gain invaluable industry experience and practical engineering skills working on engineering and design of pipelines, pump stations, storage tanks and treatment systems of drinking water and wastewater utilities. Work with a diverse team of professionals, fostering networking opportunities. Access to mentorship and guidance from experienced engineers. Competitive compensation package. Travel : Equal Opportunity Employment Statement Salas O’Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O’Brien will accommodate the disability-related needs of applicants as required by law. Required Pursuit of bachelor’s or better in Civil Engineering. Qualifications Education Required Some college or better in Civil Engineering. Experience Preferred Must be currently enrolled in a Civil and/or Environmental Engineering program at a four-year ABET university or college with preferred targeted graduation date within 1 year (preferred). Will consider candidates who are graduating within 2 years. Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor. #J-18808-Ljbffr Salas O’Brien, Inc.