Structural Design Engineer Intern

About the Role dnllc is seeking a Structural Design Engineer to help shape the future of water management infrastructure. Based in El Cajon, CA, this role focuses on designing concrete storage tanks that support essential water needs for communities and businesses nationwide. What You'll Do Design concrete storage tanks for water management projects Apply structural engineering principles to deliver durable, long-lasting solutions Contribute creative ideas and practical problem-solving to project teams Support the development of infrastructure that protects and manages vital water resources Our Approach dnllc prioritizes excellence, collaboration, and forward-thinking in every project. The team is committed to redefining structural integrity with solutions that last and serve a broad range of water needs across the country. Location El Cajon, CA

Role Overview 3 Day Blinds Sales is hiring a Design Consultant in El Cajon, California. This role focuses on helping clients improve their homes with window treatments that match their style and needs. What You Will Do Meet with customers to learn about their design preferences and goals Offer expert guidance on window treatment options Recommend solutions that fit each client’s space and taste Provide personalized consultations from initial meeting through project completion What Sets This Role Apart This position suits those who enjoy working directly with clients and using design skills to deliver practical, attractive results. Strong communication and a genuine interest in customer satisfaction are important in this client-facing role.

At DN Tanks, we are driven by a collective mission to protect the world's most vital resource - water.With nearly a century of experience, our company has successfully designed and constructed over 3,500 pre-stressed concrete liquid storage tanks, establishing ourselves as leaders in the industry through unmatched quality and innovation.Position Overview: As a Construction Management Intern, you will immerse yourself in the dynamic realm of civil engineering and construction. Under the guidance of an experienced mentor, you will engage in real-world projects, honing invaluable skills and gaining insights into the entire lifecycle of heavy-civil construction endeavors, from inception to completion.This internship presents a fantastic opportunity to develop your professional skills, contribute to meaningful projects, and make a significant impact on the future of water infrastructure. Requirements: We are looking for a local intern from the San Diego area who can commit to approximately 20 hours per week, beginning in January 2026.

At DN Tanks, we believe in a shared mission — to safeguard the world's most vital resource — and we are guided by core values that empower us to achieve this mission and deliver exceptional service to our clients.With a legacy of over 90 years, we specialize in top-tier liquid storage design and construction services, providing unmatched long-term value and an exceptional client experience. Having constructed more than 3,500 pre-stressed concrete liquid storage tanks worldwide, we have established ourselves as industry leaders in quality and innovation.As a Preconstruction Estimating Intern at DN Tanks, you will immerse yourself in the dynamic fields of civil engineering and construction. Under the guidance of an experienced mentor, you will engage with real projects, cultivate essential skills, and explore the comprehensive lifecycle of heavy-civil construction projects from concept to completion. This internship presents a unique opportunity to gain invaluable experience, shape your future, and make a substantial impact!

dnllc has spent over 90 years designing and building pre-stressed concrete liquid storage tanks, with a focus on protecting vital water resources. The company has delivered more than 3,500 tanks worldwide, centering its work on liquid storage design and construction. Quality, reliability, and long-term value guide every project. Role overview The Mechanical Engineering Technician position is based in El Cajon, CA. This role supports the design, development, diagnostics, and testing of equipment, tools, engines, and machinery used across dnllc. Daily work includes hands-on problem solving and close collaboration with other teams to improve existing equipment and help bring new products from concept to production. Key responsibilities Design, develop, and test equipment, tools, engines, and mechanical systems Diagnose and address engineering challenges as they arise Work with multiple teams to enhance equipment performance Support the transition of new products from concept to production Take ownership of mechanical engineering for all company equipment Optimize mechanical systems for efficiency and reliability What dnllc looks for Interest in machinery and mechanical systems Ability to tackle complex engineering issues Hands-on approach to problem solving Strong collaboration skills across teams Desire to take responsibility for mechanical engineering projects Location El Cajon, CA

At dnllc, our culture is anchored in a collective vision — to safeguard the world’s most invaluable resource — coupled with the core values that drive us as we work towards this vision and fulfill our mission to our clients.We pride ourselves on delivering top-tier liquid storage design and construction services, offering the best long-term value with an unparalleled customer experience. Over the last 90 years, we have successfully constructed over 3,500 pre-stressed concrete liquid storage tanks globally, establishing ourselves as the industry leader in quality and innovation.dnllc is on the lookout for a talented and forward-thinking Mechanical Engineer to join our dynamic team. In this role, you will design, develop, and rigorously test a variety of equipment, including tools, engines, and machinery. You will collaborate cross-functionally with different teams to not only maintain and enhance the performance of existing equipment but also to drive new products from concept to production, optimize mechanical systems, and apply hands-on solutions to complex engineering challenges. If you have a passion for machinery and a proactive approach to engineering problem-solving, we encourage you to apply!