Staff Security Engineer, The Browser Company
AI Product
$225-300k
+ Equity
Web browser developer
Open for applications
Web browser developer
21-100 employees
Open for applications
$225-300k
+ Equity
21-100 employees
Company mission
To build a better web browser— one that enables people to build their own home on the internet, and arms them with the tools they need to be more focused, organized, and in control.
Role
Who you are
- 5+ years leading large-scale security engineering projects and shipping security features in production
- Strong coding skills in one or more of: Golang, Swift, TypeScript, or Python
- Comfortable working across native client and backend services
- Excellent cross-functional communication; able to align and coordinate across Product, Infra, IT, and Legal to deliver high-impact outcomes quickly
- Privacy-minded with a bias for high-velocity execution and clear prioritization
- Our team is based in North American time zones and require that folks have 4+ hours of overlap time with team members in Eastern Time Zone
- You resonate with our company values
Desirable
- Familiarity with client side software development. Familiarity with browser or Chromium development a plus
- Familiarity with AI/LLM security risks (prompt injection, tool-use abuse, data exfiltration) and practical guardrail patterns
What the job involves
- As a Security Software Engineer at The Browser Company, you will lead and ship security features built specifically for Dia
- This is a hands-on role focused on execution: you’ll drive the highest-impact security work across client and server surfaces, coordinate with multiple teams to sequence priorities, and continually account for AI-driven risks (like prompt injection, tool abuse, data exfiltration) in every design and review
- You will report to the Head of Security, working closely with Product, Infra, IT, and Legal to ship security features fast
- You'll design and ship AI security features in the Dia product and our Prompt Safety service
- Drive Dia’s security architecture and threat modeling across client and backend surfaces with an AI-first threat lens
- Develop AI-aware defenses that make our systems intrinsically secure, with guardrails against prompt injection/jailbreaks, output filtering/policy enforcement, red teaming/adversarial testing, and incident playbooks
- Establish metrics and dashboards tracking the effectiveness of our security infrastructure and AI defense to guide priority and measure impact
- Architect and deliver AI security features for Dia, including building out the future of LLM protections, AI fuzzing integration, managed accounts, and advanced authentication/authorization controls
- Architect and implement LLM assisted fuzzing for Dia’s Assistant and the Prompt Safety Service
- Collaborate with engineering and product teams to embed secure-by-default patterns and frameworks throughout Dia’s codebase
- Drive the creation and evolution of security metrics and dashboards to measure and communicate impact across the organization
- Join our team’s on-call rotation, helping the team keep our services reliable and responding to production and security incidents
Application process
- Deadline to Apply: February 28, 2026 at 8:00 AM UTC
Our take
Web browsers enable people to access all that they want from the internet. However, this tool is often ignored, and despite all the changes to other software over the years, it has remained relatively unchanged. The Browser Company delivers Arc and Dia - new web browsers designed to be faster as well as more personal, focused and creative than traditional options.
Founded in 2019, The Browser Company sees an opportunity to create a browser that excites. Brand dedication for the more common browsers is limited, as they are designed to act in the background. Instead, The Browser Company wants Arc and Dia to act intelligently, visibly overcoming problems like overwhelming hits, online distraction and information being hidden under irrelevant results.
Its competitors of course include some of the biggest names in tech, but it hopes to stand out with a browser that is dramatically new and more powerful, which will earn its own unique space in the market. Arc was released for mobile and Windows in 2024, followed by the AI-focussed Dia in 2025, and they have so-far been met with positive reviews.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 5 rounds)
Mar 2024
$50m
LATE VC
Jan 2023
$56.8m
SERIES A
Total funding: $136.8m
Company benefits
- Choose-Your-Own-Compensation Plan: When we give you a job offer, we’ll actually give you two different offers — one that is focused on having a higher salary and one focused on higher equity. Candidates can choose either offer (or any numbers in-between) when they accept.
- Best in the Biz Insurance: We provide employees with full coverage medical, vision, and dental insurance and a free One Medical membership to help you keep you and your family healthy. We cover 100% of employee plan costs and up to 90% for dependents.
- Napping During the Workday: Some of us are better in the mornings, others are more productive in the afternoon. People should take breaks when they need to. If you’re on our team, we trust you to get your work done — our policy is: work when it makes sense for you!
- Take Time Off, Please!: We believe that people do their best work when they’ve rested and had valuable time off. So rather than having a maximum number of days off, we actually have a recommended minimum vacation of 20 days a year. Take time off when you need it and also just when you feel like it.
- Extremely Flexible Parental Leave: We are proud to offer an extremely flexible 12 weeks of parental leave — for any parent regardless of gender and for birth, adoption, surrogacy, or fostering. Take the 12 weeks all at once, or split up days to slowly transition back to work — we’re accommodating to everyone’s different situations! Birth mothers also qualify for an additional 6 weeks of medical leave.
- Design Your Dream Home Office: We are a remote first company. About half of our team currently lives outside of New York and across 5 different time zones. So if you need some stuff to make working from home a bit easier, we offer a $1000 stipend for anything you need to get comfortable.
- Cozy Office in Brooklyn, Wooo!: If you do happen to live in the New York area (or you want an excuse to visit) you can come into our beautiful office in Williamsburg. Coming into office is entirely optional, some of us come almost every day and some of us come in once a week. No obligation, we just genuinely like each other!
Company HQ
SoHo, New York, NY
Leadership
Josh Miller
(CEO & Co-founder)Board Member at Patreon. Co-Founder and former CEO of Branch.com. Former Director of Product for The White House.
Hursh Agrawal
(CTO & Co-founder)Principal/Owner of Enso Code. Former Interim CTO of Thirty Madison and of Jumprope. Co-founder and previous CTO of Zinc.
Salary benchmarks
We don't have enough data yet to provide salary benchmarks for this role.
Submit your salary to help other candidates with crowdsourced salary estimates.
Share this job
View 8 more jobs at The Browser Company