Software Engineer (Full Stack)

What's Freeplay?

Freeplay is the platform for software teams to ship great AI products. We give product development teams the power to test, evaluate, monitor & optimize AI in production. Our customers use Freeplay to to build better LLM features, chatbots, and agents. Already we’re helping leading software companies from growing startups to Fortune 100 companies.

Why does the world need Freeplay?

Making simple requests to ChatGPT is easy. But that building production software around LLMs is much more challenging — especially for development teams without prior AI experience. They're motivated to move fast through the learning curve and focus on delivering value to customers.

Freeplay streamlines this process — making it easy for teams to develop & improve production-ready AI features quickly and confidently. Our customers love that we help them save time, avoid costly mistakes, deliver better features for their customers, and empower their entire team (engineers & non-engineers alike) to ship faster together.

Read more about what we’re up to on our blog .

Your Mission

Lay the foundation & ship software : Design, build, and maintain core infrastructure and features across our entire stack - from intuitive front-end experiences to scalable backend systems that power our AI testing and evaluation platform.

Drive technical decisions : Evaluate and adopt technologies, tools, and best practices while significantly shaping our technical architecture. Help make strategic decisions about how to build reliable systems that interface with AI components.

Champion user experience : Keep the end-user front & center throughout the development process, ensuring our platform remains intuitive and powerful for teams building with AI, while delivering a seamless experience across all features.

Build alongside the founding team : Work hand-in-hand with our founding team to ideate, prototype, and deliver innovative solutions that address user needs and create value for our customers.

Shape our engineering culture & process : Implement rigorous testing, code reviews, and continuous integration processes to maintain high-quality, production-ready code while minimizing technical debt.

We’d love to hear from you if…

You have a minimum of 3 years full-time professional experience in software engineering with a focus on full stack development.

You have a strong product sense and ability to leverage your technical expertise to solve customer and business problems.

You’re a pro-social, strong communicator that enjoys working on a tight-knit collaborative team.

Working on a team that cares as much about how we work as much as the code we write sounds exciting.

Our company values resonate with you.

The way we run our Engineering team resonates with you and helping further shape and define this sounds invigorating.

Are eager to work on-site

• , in-person 3+ days a week at a beautiful office at the base of the Rockies in Boulder, CO

The details

Competitive salary and equity package

Benefits including medical, dental, vision

Top of the line hardware - brand new Macbook, monitor, peripherals

Four weeks Paid Time Off per year (we actually want you to use it)

Relocation assistance negotiable