---
title: 'Senior Full Stack Software Engineer at Semgrep'
canonical: 'https://feeny.ai/job/senior-full-stack-software-engineer-semgrep-san-francisco-5dvjbt89wfzq'
type: 'job'
last_seen: '2026-09-05'
---

# Senior Full Stack Software Engineer at Semgrep

- **Company:** Semgrep
- **Location:** San Francisco, CA
- **Compensation:** $163k–$247k
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-02-02
- **Last confirmed live:** 2026-09-05
- **Apply:** https://jobs.ashbyhq.com/semgrep/21496f9a-feaf-4c11-a83c-3b46c621b778/application

**Skills:** TypeScript, React, Python, Flask, SQLAlchemy, Kubernetes, AWS

> Design, build, and maintain a fast and reliable user experience by collaborating with designers and product managers. Develop flows for AppSec professionals and developers, owning end-to-end feature implementation in frontend and backend using TypeScript, React, Python, Flask, and SQLAlchemy.

## 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 Fullstack Engineer, you’ll work across the stack to design, build and maintain a fast and reliable user experience for our customers. You’ll collaborate closely with designers and product managers to develop flows that help AppSec professionals and developers alike to achieve their security goals, own the end-to-end implementation of features in our frontend and backend and scale these systems as we continue to grow rapidly this year.

Our stack utilizes Typescript and React on the Frontend, Python, Flask and SQLAlchemy on the Backend, is deployed via Kubernetes and hosted on AWS. Professional experience with these technologies is preferred but not required provided you are open to learning them quickly!

This is a hybrid role with the expectation you’ll join us 3+ days per week in our San Francisco, New York, Boston or Denver offices depending on team. Remote employment will be considered for exceptional candidates as well.

## COMPENSATION

The estimated starting annual salary range for this position is $163,000 to $246,500 USD.. The actual base salary will be determined based on a number of factors, which may include job-related skills, relevant experience, qualifications, location, internal equity, and market data. In addition to base salary, total compensation may include equity, variable compensation, and benefits. We view equity as a meaningful part of our compensation philosophy and a way for employees to share in the long-term value they help create.

Compensation ranges are reviewed regularly and may be adjusted as the role, individual performance, or market conditions evolve.

## 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 socioeconomic status, your age, your race, your gender, your sexual orientation, your disabilities. We value what’s vitally important to you — your family, your religion, your politics. We value what you love in this world — your music, your weekend pursuits. We believe in welcoming varied professional backgrounds, educations, and interests. If you’re exceptional in your role, believe in Semgrep’s mission, and treat Semgrep’s values as your own, you belong here.

Please Note: For US-based roles open to remote work, we are currently able to hire employees in the following states only: Arizona, California, Colorado, Connecticut, District of Columbia, Florida, Georgia, Illinois, Maryland, Massachusetts, Michigan, Missouri, Nebraska, New Jersey, New York, North Carolina, Oregon, Tennessee, Texas, Virginia, Washington, and Wisconsin.

## About Semgrep

## Company Overview
- **One-liner**: Semgrep provides an AI-powered application security platform that unifies static analysis (SAST), software composition analysis (SCA), and secrets scanning to help developers find and fix vulnerabilities before they ship.
- **Entity Type**: Private (Series D; latest round $100M in February 2025)
- **Headquarters**: San Francisco, California, USA
- **Founded**: 2017
- **Founders**: Isaac Evans (CEO) and Drew Dennison (CTO)

## Core Business
- **Primary Industry**: Application Security (AppSec), Software Development Security
- **Target Customers**: B2B – Enterprise development teams, AppSec teams, and individual developers
- **Mission**: “Make it expensive to exploit software.” [builtinnyc.com](https://www.builtinnyc.com/company/semgrep)

## Products & Services
- **Semgrep Code (SAST)**: Multimodal AI detection that combines deterministic static analysis with AI reasoning to uncover OWASP risks, business logic flaws, and IDORs. [semgrep.dev](https://semgrep.dev/)
- **Semgrep Supply Chain (SCA)**: Reachability analysis that flags only exploitable dependencies, reducing false positives by up to 98%. [semgrep.dev](https://semgrep.dev/)
- **Semgrep Secrets Scanning**: Semantic and entropy-based detection that prevents hardcoded credentials from shipping. [semgrep.dev](https://semgrep.dev/)
- **Semgrep MCP Server**: Secures AI-generated code (e.g., from Cursor, Replit) at the source by integrating directly into AI workflows. [semgrep.dev](https://semgrep.dev/)
- **Remediation & Prevention Features**: Automated fix suggestions in PRs/IDEs, and a “memory” system that learns from human triage to suppress repeat false positives.

## Market Standing
- **Valuation**: Not disclosed
- **Key Metric**: Total Funding – $193M (across 4 rounds: Pre-Seed, Series A, B, C, D). Latest Series D ($100M) led by Menlo Ventures in February 2025. [linkedin.com](https://www.linkedin.com/company/semgrep)
- **Notable Investors/Partners**: Menlo Ventures, Felicis Ventures, Lightspeed Venture Partners, Redpoint Ventures, Sequoia Capital. Cloud context integrations with Palo Alto Networks, Sysdig, StackHawk. [semgrep.dev](https://semgrep.dev/)
- **Growth Signals**:
  - 215 employees (+42.1% YoY) as of mid-2026 [linkedin.com](https://www.linkedin.com/company/semgrep)
  - 45+ enterprise customers (Acrisure, Snowflake, Dropbox, Figma) [semgrep.dev](https://semgrep.dev/)
  - Recognized by Gartner in Application Security Testing [linkedin.com](https://www.linkedin.com/company/semgrep)
  - 30 active job postings (+25% YoY) [linkedin.com](https://www.linkedin.com/company/semgrep)
  - Estimated annual revenue of $1.1M (LinkedIn estimate) [linkedin.com](https://www.linkedin.com/company/semgrep)

## Competitive Advantages
- **AI-Augmented Detection**: Combines deterministic static analysis with AI reasoning to catch business logic flaws and IDORs that pattern-based tools miss.
- **Near-Zero False Positives**: Clients report 80% fewer false positives across SAST and SCA; the platform learns from human decisions to automatically suppress repeat noise.
- **Developer-Friendly Workflow**: Integrates natively into CI/CD (GitHub, GitLab, Bitbucket, Azure), IDEs (VS Code, JetBrains), and PR checks – plus MCP for AI coding tools.
- **Open-Source Core**: The original open-source Semgrep engine remains widely used, fostering community trust and extensibility.
- **Prevention-First Approach**: “Memories” of past triage decisions prevent the same false positives from recurring, allowing teams to focus on real risk.

## Strategic Focus
- **Securing AI-Generated Code**: The MCP Server and AI integrations signal a priority on helping organizations adopt AI coding tools without introducing vulnerabilities.
- **Platform Consolidation**: Unifying SAST, SCA, and secrets into a single platform to replace point solutions and reduce tool sprawl.
- **Zero False Positives Ambition**: Continuing to invest in AI and rule-learning to eliminate noise and accelerate security reviews.
- **Expanding Customer Base**: Recent $100M Series D indicates aggressive go-to-market investment, especially in mid-market and enterprise segments.

## Why Work Here
- **Culture**: Values include “Be audacious,” “Embrace debate,” “Users are the judge,” “Do it fast,” and “Relentlessly improving.” Emphasizes passionate, productive debate without personal attacks. [semgrep.dev/about/careers](https://semgrep.dev/about/careers)
- **Work Model**: Hybrid-first with hubs in San Francisco (HQ), New York, Boston, Denver, and London. On-site expectation ~2 days per week. [builtinnyc.com](https://www.builtinnyc.com/company/semgrep)
- **Perks**:
  - Unlimited PTO (mandated minimum 3+ weeks)
  - Comprehensive health, dental, and vision plans
  - 401(k) retirement plans
  - Equity compensation
  - Family and childcare benefits
  - Flexible spending accounts (FSA)
  - Customized development tracks for career growth [builtinnyc.com](https://www.builtinnyc.com/company/semgrep) [semgrep.dev/about/careers](https://semgrep.dev/about/careers)
- **Engineering Culture**: Opportunity to solve hard problems in program analysis and AI; strong technical talent pool from companies like GitLab, Google, Datadog, and Meta. [linkedin.com](https://www.linkedin.com/company/semgrep)

## Sources
1. [semgrep.dev – Product Overview](https://semgrep.dev/)
2. [linkedin.com – Semgrep Company Profile](https://www.linkedin.com/company/semgrep)
3. [builtinnyc.com – Semgrep Careers, Perks & Culture](https://www.builtinnyc.com/company/semgrep)
4. [semgrep.dev – Careers Page](https://semgrep.dev/about/careers)
5. [semgrep.dev – Specific Job Posting](https://semgrep.dev/about/careers/?ashby_jid=d47b1ab8-042f-4373-9561-f083fbc529c1)

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