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Full Stack Engineer Intern Jobs in Sioux Falls, SD

ISG

Industrial Water/Wastewater Engineer

Sioux Falls, SD · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... full-service architecture, engineering, environmental, and planning solutions. We are looking to ... our intern program and early-career staff Skills, Knowledge and Expertise What You'll Bring

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How much do full stack engineer intern jobs pay per hour?

As of Aug 16, 2026, the average hourly pay for full stack engineer intern in Sioux Falls, SD is $25.29, according to ZipRecruiter salary data. Most workers in this role earn between $20.58 and $28.70 per hour, depending on experience, location, and employer.

What types of projects and technologies can I expect to work with as a full stack engineer intern?

As a Full Stack Engineer Intern, you can expect to work on a variety of projects ranging from building user interfaces with front-end frameworks like React or Angular to developing backend services using technologies such as Node.js, Python, or Java. Interns often assist with integrating APIs, database management, and testing features in both development and production environments. You'll likely collaborate closely with designers, product managers, and other developers, gaining exposure to the complete software development lifecycle. This hands-on experience is designed to help you build practical skills and contribute meaningful code to real applications.

What is a full stack engineer intern?

Full Stack Engineer Interns are students or recent graduates who assist in developing both the front-end and back-end components of web applications. They work under the guidance of experienced engineers to gain hands-on experience with programming languages, frameworks, and tools used throughout the software development lifecycle. Their responsibilities often include writing code, testing applications, fixing bugs, and collaborating with teams to deliver functional software. Through this internship, they develop practical skills and a deeper understanding of how web systems work end-to-end.

What is the difference between Full Stack Engineer Intern vs Software Developer Intern?

AspectFull Stack Engineer InternSoftware Developer Intern
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldTypically pursuing or recently completed a degree in Computer Science or related field
Work EnvironmentHands-on experience with both front-end and back-end development in a team settingFocus on coding, debugging, and developing software applications, often in a specific area
Employer & Industry UsageTech companies, startups, and organizations seeking versatile interns with full-stack skills

The Full Stack Engineer Intern role involves working across both front-end and back-end technologies, providing a broad development experience. In contrast, a Software Developer Intern may focus more narrowly on specific software components or applications. Both roles are valuable for gaining industry experience, but the Full Stack Engineer Intern position offers a more comprehensive view of the entire development process.

What are the key skills and qualifications needed to thrive as a full stack engineer intern?

To thrive as a Full Stack Engineer Intern, you need a solid understanding of programming languages like JavaScript, HTML, CSS, and at least one backend language, often supported by coursework or relevant project experience. Familiarity with frameworks such as React or Angular, backend systems like Node.js or Django, version control (Git), and basic database management is typically expected. Strong problem-solving skills, eagerness to learn, and effective communication help interns stand out in fast-paced development teams. These skills and qualities are essential for contributing to real-world projects, collaborating effectively, and accelerating professional growth in a technical environment.

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Full Stack Engineer Intern jobs near you
Infographic showing various Full Stack Engineer Intern job openings in Sioux Falls, SD as of August 2026, with employment types broken down into 71% Full Time, and 29% Contract. Highlights an 100% In-person job distribution, with an average salary of $52,595 per year, or $25.3 per hour.

Industrial Water/Wastewater Engineer

ISG

Sioux Falls, SD • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 4 days ago

Job description

Description
Founded in 1973, ISG is a nationally recognized, multi-disciplinary firm delivering full-service architecture, engineering, environmental, and planning solutions. We are looking to add to our Water/Wastewater team with an Industrial Water/Wastewater Engineer.  We are building a reputation for consistency, excellence, and thought leadership—and we want to be the best in the country. In our industrial water/wastewater practice, that means solving complex problems quickly, tailoring solutions to unique process conditions, and continuously learning and sharing knowledge through projects, publications, and conferences.

We are seeking an Industrial Water/Wastewater Process Engineer who thrives in fast-paced environments and is energized by variety—variety in technology, client operations, and project challenges. Unlike municipal work where loads and solutions are often consistent, our industrial projects can vary widely and move quickly. The right person will be inquisitive, data-driven, and confident in doing sound process design—not copy/paste—while applying common-sense engineering to validate that calculations and outcomes make sense.

This role will contribute to industrial client projects (e.g., food & beverage, dairy, agriprocessing, manufacturing) by developing process designs for water and wastewater treatment, reuse, and related systems. You’ll collaborate with senior engineers, mentor interns/early-career team members, and actively engage in technical learning and industry presence.

Essential Duties
What You’ll Do
  • Process Design & Calculations: Develop process designs and perform detailed calculations (mass balances, hydraulic profiles, equipment sizing, process modeling) for industrial water/wastewater systems (physical/chemical, biological, pretreatment, reuse)
  • Tailored Solutions: Analyze influent/effluent variability and site-specific conditions to create solutions that fit each client’s process—no “one-size-fits-all”
  • Fast-Paced Project Delivery: Manage multiple, fast-moving industrial projects with clear priorities, organized workflows, and proactive communication
  • Technical Documentation: Produce PFDs/P&IDs, specifications, reports, and QA/QC checklists; coordinate with multi-disciplinary teams and vendors
  • Field & Implementation Support: Support site visits, pilot testing, startups/commissioning, and operator training as needed
  • Data-Driven Decisions: Structure and interpret data to inform design decisions; validate results with practical judgment (e.g., sanity-check mass and flow balances)
  • Continuous Learning & Thought Leadership: Contribute to internal knowledge-sharing, present or co-author technical papers, and represent ISG at industry and technical conferences
  • Collaboration & Mentorship: Work independently when appropriate while knowing when to ask questions, reference resources, and engage teammates; help grow our intern program and early-career staff

Skills, Knowledge and Expertise
What You’ll Bring 
  • Education: B.S. in Chemical Engineering or Environmental Engineering (preferred). Strong process-focused candidates from related disciplines may be considered
  • Experience: 2–4 years of relevant experience in industrial or water/wastewater process design. (We welcome more experienced applicants, understanding availability may be limited.)
  • Process Mindset: Demonstrated ability to think critically, ask the right questions, and tailor designs based on unique process conditions
  • Common-Sense Engineering: Habit of validating whether results are physically/logically reasonable (e.g., ensuring mass/flow balances make sense)
  • Data Orientation: Strong organization and comfort relying on data to drive decisions; proficiency with Excel and engineering calculation tools
  • Communication: Clear, concise verbal and written communication with clients and internal teams; ability to work independently and proactively seek guidance when needed.
  • PE or EIT certification or progress toward PE licensure
  • Experience with industrial sectors (food & beverage/dairy, agriprocessing, manufacturing)
  • Familiarity with process modeling tools and developing PFDs/P&IDs
  • Experience presenting at or attending industry and technical conferences (e.g., WEFTEC, Water Reuse) and interest in publishing/presenting technical content
  • Membership or engagement with professional organizations (WEF, AWWA, Water Environment Federation chapters, etc.)

ISG Employee Owner Benefits
  • Medical, dental, and vision
  • Paid time off, pro-rated amount available on your start date
  • Paid holidays and paid volunteer time
  • Paid parental leave
  • Bi-annual profit sharing
  • Employee Ownership Stock Plan (ESOP)
  • 401K retirement plan
  • Life insurance
  • HSA and FSA options
  • Bereavement leave
  • Supplemental voluntary benefits
  • Short term and long-term disability
  • Parking reimbursement, varies on office location
  • Cell phone plan reimbursement
  • Mileage reimbursement for ISG-approved travel