Optical Engineering Intern - Summer 2027 Danbury, CT, US

CACI International Inc.; Danbury, Northern (CT, KY); Hybrid; USD 56,000 - 111,000; Part time

Job summary

CACI International Inc. invites an Optical Engineering Intern for Summer 2027 in Danbury, CT. The role focuses on modeling optical systems, performing interferometric analysis, and supporting full development from idea to testing.

You will work with optical specialists and cross-functional teams on challenging projects involving Zemax and other analysis tools, gaining hands-on experience in advanced optical and opto-electronic systems.

Qualifications

• Currently pursuing a Master’s degree in Optical Engineering or closely related field.
• Understanding of geometrical optics and Fourier optics.
• Experience or coursework in optical system modeling.

Responsibilities

• Model optical systems and perform design tasks for reflective remote sensing projects.
• Conduct interferometric data analysis using standard tools.
• Review and help create error budgets for system performance.
• Support hands-on optical engineering work across the development cycle.

Skills

Geometrical optics

Fourier optics

Optical system modeling

Interferometry

Zemax

Data analysis

Education

Master's degree in Optical Engineering

Tools

Zemax

4D

MetroPro

Job description

## Optical Engineering Intern - Summer 2027Danbury, CT, USApply NowFind out how well you match with this jobJob ID: 332752Job Title: Optical Engineering Intern - Summer 2027Job Category: Intern/Co-opTime Type: Part timeMinimum Clearance Required to Start: NoneEmployee Type: Part-Time On-CallPercentage of Travel Required: NoneType of Travel: None\\* \\* \\***The Opportunity:**Join a team of innovative optical engineers who tackle complex, meaningful technical challenges every day. As an Optical Engineering Intern, you’ll partner with both optical specialists and cross‐functional teams to solve real technical problems while building hands‐on and analytical experience with advanced optical and opto‐electronic systems. You’ll contribute to the full development cycle—from early design ideas to final system testing—using industry‐standard tools and methods. The internship will be fully on-site at our Danbury, CT location. **Responsibilities:** You will work on a select set of meaningful projects tailored to your interests and strengths, supporting the development of large reflective remote sensing systems. Your responsibilities may include optical system modeling, design tasks, interferometric data analysis, and other hands‐on optical engineering work. Projects could involve reflective optical system design in Zemax, analyzing interferometric data using tools like 4D or MetroPro, creating and reviewing error budgets for SFE/WFE performance, and modeling optical characteristics such as PSD or Encircled Energy.**Qualifications:** *Required:** Currently pursuing a Master's degree in Optical Engineering or a closely related field* If your degree is not in Optical Engineering, you must demonstrate working knowledge of fundamentals* Understanding of geometrical optics and Fourier optics* Experience or coursework in optical system modeling* Familiarity with interferometry and related analytical tools* Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future* Ability to successfully complete a pre-employment drug screening *Desired:** Minimum GPA of 3.0 or higher is preferred, but not required* Previous internship/co-op or other work experience-**What You Can Expect:****A culture of integrity.**At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.**An environment of trust.**CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.**A focus on continuous growth.**Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.**Pay Range**:There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.The proposed salary range for this position is:$55,600 - $111,100*CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.*