About Steel

Steel is building open-source browser infrastructure for AI agents and apps. We make it easy for developers to ship AI products that interact with the web using our Sessions API.

With over 7,000 GitHub stars, dozens of paying customers, and millions of sessions served monthly, we grew our platform 50x in 2025 purely through word-of-mouth and our open-source community. Backed by world-class investors, we're building a small, highly motivated, and talent-dense team that's shaping the future of how humans interact with the internet.

More on the problems we're solving: https://docs.steel.dev/overview/intro-to-steel

The Role

We're looking for exceptional software engineering interns to help build the infrastructure and developer tools powering the next generation of AI agents.
You'll work alongside our engineering team on real technical challenges, from scaling browser infrastructure to building developer tools and experimenting with AI agents. We're a small team that moves fast, and you'll have the opportunity to take ownership, ship production code, and see your work used by developers building some of the most exciting applications in AI.

Sample projects include...

Building and shipping features across Steel's APIs, SDKs, and developer tools
Improving the performance and reliability of our browser infrastructure
Building open-source demos that showcase what's possible with AI agents and browsers
Experimenting with AI models, prompts, and agent frameworks to improve browser automation
Working with containers, VMs, proxies, and distributed systems to scale browser sessions
Debugging tricky engineering problems and shipping fixes that make Steel faster and more reliable

Requirements

Currently pursuing a degree in Computer Science, Software Engineering, or a related field, or have equivalent hands-on experience
Strong programming fundamentals and experience building software projects
Comfortable writing code and learning new languages, frameworks, and tools
AI-native: actively use AI coding tools and agents in your development workflow
Curious about how systems work and excited to solve challenging technical problems
Able to take ownership, move quickly, and learn independently
Able to work in person from our Toronto office

Nice-to-haves

Previous software engineering internship experience
Experience building full-stack applications, developer tools, or infrastructure projects
Contributions to open-source projects or interesting personal projects
Experience with cloud infrastructure, Linux, containers, or distributed systems
Experience building with LLMs or AI agents

Applying

If there appears to be a fit, we'll reach out to schedule 2 short technical interviews. After, we'll schedule an onsite at our Toronto office, where you'll work on a small project, discuss ideas, and meet the team.

About the company

Steel.dev provides an open-source browser API for AI agents and web automation, running Puppeteer, Playwright, or Selenium in the cloud to manage headless browser fleets. It handles scaling, cold starts, resource contention, and reliability so teams can run large-scale web scraping and autonomous agents without maintaining infrastructure. It offers a fully managed cloud service that integrates with existing tooling and uses a usage-based pricing model. The goal is to let clients focus on building products by providing scalable, reliable browser infrastructure for automated browsing and data extraction.

Company Size

11-50

Company Stage

N/A

Total Funding

N/A

Headquarters

N/A

Founded

2024

Get referred to Steel

See people who can refer or advise you

Simplify's Take

What believers are saying

Steel launched Stripe Projects integration in 2026, expanding distribution inside another developer platform.
June 2026 pricing added Launch, Scale, and Enterprise tiers, improving upsell paths.
Atlas and native Rust and Go SDKs broaden adoption among research and infrastructure teams.

What critics are saying

Browserbase bundles agent runs, search, and fetch, squeezing Steel's developer wedge in 2026.
Open-source self-hosting weakens monetization, because customers can fork Steel Browser and leave.
Enterprise dependence on browser automation exposes Steel to platform bans, CAPTCHA arms races, and abrupt customer churn.

What makes Steel unique

Open-source Steel Browser lets teams self-host while keeping a managed cloud.
June 2026 Launch Week added Stealth Browser, Dedicated IPs, and Rust and Go SDKs.
Steel reports 894ms session starts and 100% reliability across 5,000 browserbench runs.

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Benefits

Employee Referral Bonus

Growth & Insights

Headcount

6 month growth

-7%

1 year growth

-7%

2 year growth

-7%

Steel

Software Engineer Intern

About the job