Software Engineer Intern, Program Analysis

About the role

As a software engineering intern at Semgrep, you'll work with our developers, security engineers, and academic research partners to create a tool that empowers people to activate the standards that they care about for their code.

Along the way, you'll learn how people write secure code that lasts, best practices in coding, and functional programming (yayyy!), as you meet developers and security professionals at organizations ranging from early-stage startups to social-media giants, and as you work with program analysis experts who are passionate about making developers' lives easier.

As a member of our team, you'll be treated with respect and high standards, just like anyone else here. You'll be a part of the decisions that make an early-stage startup successful and your work will be critical to our mission. Every feature you build will have a measurable impact on our users' lives. We're excited to see what you do.

Perhaps the best description of this internship comes from someone who has been where you will be.

• Katrina Liu's experience adding a new feature as a 2024 Intern
• Vivek Khimani's experience as a 2022 intern from interviewing, onboarding to building a feature that is still in use today

You will:

• Design world-class pragmatic software analysis tools for security teams and developers
• Improve and develop new code analysis techniques (e.g. constant propagation, dataflow analysis) that provide developers with powerful but simple ways to find what they care about
• Contribute to everything from proprietary software to external open source parsers
• Learn from a peer mentor who will help navigate your internship to get what you want out of it and achieve success
• Talk to our users and work alongside security researchers to understand their needs

You are ideal for this role if you

• Find compilers, programming languages, or type theory interesting
• Have experience using a functional programming language (e.g. OCaml, Haskell)
• Are excited about software security and developer enablement
• Are able to work in our San Francisco office 5 days/week
• Are you available to start on either Tuesday, May 26th, 2026 or Tuesday, June 23rd, 2026

Some example projects our previous interns have worked on include

• Design a 1.0 syntax for Semgrep rules that is consistent and intuitive
• Implement a feature to search for variables of a specific type
• Autogenerate Semgrep rules from user-provided sample code
• Develop a solution for extracting and analyzing code embedded in other files, like bash scripts or StackOverflow pages
• Adding path-sensitivity dataflow support to our Pro engine

What we offer

• $2,400 per week for our 10-week full-time internship
• Close 1:1 mentorship from full-time engineers on the team
• Regular feedback from your team's manager
• The opportunity to work in-person in our San Francisco office
• An intern cohort of peers