Summer Intern 2025 - Software Engineer

Mach is a defense manufacturing company that builds munitions to help the United States win future wars. Backed by $85M in funding from top venture firms, our small lean team ideates, designs, manufactures, and sells cutting-edge weapons to the Department of Defense.

Mach offers an advanced engineering internship program with hands-on opportunities to design and build cutting-edge autonomous defense systems. You will play a crucial role in the development of innovative solutions for complex systems. Please only apply to the most relevant posting for your background. Our interns are mentored by industry experts to solve challenging real-world engineering problems across various teams. This is a 12 week internship at our HQ based in Huntington Beach, CA.

Role Summary:

Mach is seeking a Software Engineering Intern to contribute to the design, development, and maintenance of mission-critical applications. With a focus on writing efficient code, architecting end to end software stacks, and collaborating with cross-functional teams, this role demands a high degree of technical skill, adaptability, and attention to detail.

Minimum Qualifications:

• Must be enrolled in a Bachelor's or Master’s degree program from an accredited college or university in computer science, computer engineering, or other related engineering disciplines.

• 3+ months of applied engineering experience (internship, laboratory, and personal/team project experience is applicable).

• Ability to work full-time onsite in Huntington Beach, CA.

• Applicant for this intern position must be a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (e.g., green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158.

Preferred Qualifications:

• GPA of 3.5 or above.

• 6+ months experience of application of technical skills outside of the classroom (examples: laboratory, research, extracurricular project teams, volunteering, personal projects or prior internship/work experience).

• Proficient in writing clean, well-tested code in one of Python, C, C++, or Rust.

• Experience implementing a large (> 10,000 line) project.

• Strong analytical and problem-solving skills with attention to detail.

• Excellent communication skills and the ability to work collaboratively in a professional team environment.

• Eagerness to learn and adapt in a dynamic startup environment.

• Engineering problem solving capabilities.

• Self-directed with a positive attitude and team spirit.

Disclosures

This position may require access to information protected under U.S. export control laws and regulations, including the Export Administration Regulations (EAR) and the International Traffic in Arms Regulations (ITAR).  Please note that any offer for employment may be conditioned on authorization to receive software or technology controlled under these U.S. export control laws and regulations without sponsorship for an export license.

The salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only. Actual salary offers may vary based on (but not limited to) work experience, education and training, critical skills, and business considerations. Highly competitive equity grants are included in most offers and are considered part of Mach’s total compensation package. Mach offers benefits such as health insurance, retirement plans, and opportunities for professional development.

Mach is an equal opportunity employer committed to creating a diverse and inclusive workplace. All qualified applicants will be treated with respect and receive equal consideration for employment without regard to race, color, creed, religion, sex, gender identity, sexual orientation, national origin, disability, uniform service, Veteran status, age, or any other protected characteristic per federal, state, or local law, including those with a criminal history, in a manner consistent with the requirements of applicable state and local laws. If you’d like to defend the American way of life, please reach out!