Software Engineer Intern

Semgrep; San Francisco (CA); On-site; USD 109,000 - 118,000; Full time

Benefits offered by this job

Mentorship

In-person SF internship

Peer cohort

Job summary

Semgrep is seeking a software engineering intern in San Francisco to help build a new category of developer-focused security tools. You will join a team of full-stack developers, security researchers, and infrastructure engineers, shipping features that integrate Semgrep into existing workflows and scale services.

You will learn from senior engineers with experience at Google, Facebook, and startups, collaborating with customers from early-stage to scale-ups.

Qualifications

• Have taken multiple college CS courses or equivalent experience.
• Excited about software security and developer enablement.
• Able to work in our San Francisco office 5 days/week.

Responsibilities

• Design and ship features in a full-stack codebase using Python, PostgreSQL, TypeScript, and React.
• Collaborate with users, product and design teams to address pain points.
• Query aggregated metrics and run experiments to improve Semgrep workflows.
• Participate in code reviews, design discussions, and demos.
• Present work to the team at the end of the internship.

Skills

Python

JavaScript

Ruby

PHP

Security mindset

Team collaboration

Education

College CS courses

Tools

PostgreSQL

TypeScript

React

Job description

ABOUT SEMGREP

Semgrep, the leader in code security for builders, empowers invention without friction. Teams catch, flag, and fix real issues before they ship, powered by security that learns as they build. Semgrep secures code as it's written and provides guardrails that pave the road for developers to move fast and stay secure. Built for builders and trusted by security, Semgrep lives where developers work, delivering fixes without breaking flow, and giving security teams visibility, control, and confidence. Semgrep gets smarter as you build, with AI that learns your context to cut false positives and prioritize reachable vulnerabilities, validated by 95% of security reviewers across 6M+ findings. Semgrep makes zero false positives a reality with AppSec teams triaging 80% fewer false positives across Code and Supply Chain, dramatically shrinking the backlog. Founded in San Francisco and backed by Menlo Ventures, Felicis Ventures, Lightspeed Venture Partners, Redpoint Ventures, and Sequoia Capital, Semgrep is recognized by Gartner in Application Security Testing and is trusted by leading organizations, including Vanta, Lyft, and Dropbox. Learn more at semgrep.dev http://semgrep.dev.

About the role

As a software engineering intern at Semgrep, you'll help us build a new category of developer-focused security tools to prevent bugs and security vulnerabilities. You will be joining the team behind the widely used Semgrep https://github.com/returntocorp/semgrep. You will get to ship features that make it easier for teams to integrate Semgrep into their existing workflows or build improvements that help our services scale and remain reliable. Along the way, you will work with a dedicated group of full-stack developers, security researchers, program analysis experts, and infrastructure engineers. You will learn from senior developers who bring experience and wisdom from Google, Facebook, and successful startups. You will work with our clients’ security teams at companies ranging from early-stage startups to social-media giants. You will have opportunities to learn about their individual security philosophies and develop ways to make their lives easier. You'll attend lunch and learn sessions across the company - learning about everything from advanced type systems to product paradigms. As a member of our engineering team, you will get to speak directly with real customers who are using the features you build – something that makes interning at an early-stage startup so unique! We're excited to go on this journey with you! Perhaps the best description of this internship comes from someone who has been where you will be. - Tanisha Kholiya experience https://www.linkedin.com/pulse/my-experience-interning-semgrep-tanisha-kholiya-t3uac/ as a 2026 intern - Solomon Graf experience https://www.linkedin.com/pulse/going-dataflow-my-summer-semgrep-solomon-graf-cg2he/ as a 2026 intern

Responsibilities

• Design and ship new features in a full-stack codebase using Python, PostgreSQL, Typescript, and React
• Work with our users, product team, and design team to address user pain points
• Query our aggregated metrics and run experiments to help understand and improve core Semgrep workflows
• Collaborate with your team through code reviews, design discussions, and demos
• Learn from a peer mentor whose job is to help you succeed, and to help you get what you want out of your internship
• Present your work to the team at the end of your internship

Qualifications

• Have taken multiple college courses in computer science or equivalent experience
• Are interested in making a career out of software or a related field
• Have experience in a dynamic language like Python, Ruby, Javascript, or PHP
• Are excited about software security and developer enablement
• Are able to work in our San Francisco office 5 days/week.
• Are you able to start on either Monday, May 24th, 2027 or Monday, June 14th, 2027

Example projects previous interns have worked on:

• Re-design and implement a frontend web page to be more intuitive and functional
• Build a Slack App integration for Semgrep-app with an authentication handshake
• Build seamless VSCode and IntelliJ Semgrep integrations
• Implement SSO authentication only onboarding
• Build a triage workflow using PR comments

What we offer

• $2,400 per week for our 11-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

WHAT WE OFFER (FTE ONLY)

Our goal is to competitively and fairly compensate every Semgrep employee with a system that equally rewards those who are vocal and those who are less comfortable making demands during the final steps of the hiring process. To that end, we generate internal compensation bands that are used when discussing and negotiating salaries. We update these based on market data to make sure they’re above the average for comparable roles. We invest in our employees’ well-being and long-term success through a competitive, market-aligned benefits program that meets or exceeds local market standards across all of the regions in which we hire. Benefits offerings vary by location to reflect local requirements and norms. For more detailed, location-specific information, please visit Semgrep Benefits https://www.notion.so/semgrep/Semgrep-Benefits-1593009241a88029bd7edf1fed1dfde2.

WHO WE ARE

We bring together people from a wide range of backgrounds and disciplines—from physics and philosophy to formal methods research and full-fledged corporations. We're new parents and new grads, dog lovers and dogfooders. We get together often to bike, bake, and meet up in parks. In our interactions, we believe respect and honesty go hand in hand, and prioritize both. Semgrep is an equal-opportunity employer seeking a diverse range of backgrounds. We value who you are — including your cultural heritage, your