Software Engineer, Internal Tools

Polymarket is the world’s largest prediction market. It’s half "put your money where your mouth is," half search engine for the future.

We're growing fast – both in terms of volume (>$1B traded so far this year) and adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.

Polymarket is looking for a pragmatic and resourceful full-stack engineer to join our Platform team. This role is focused on building and maintaining essential internal systems that power the day-to-day operations across the company. Your main focus will be maintaining the essential tools used every day by our team to create and manage the markets that drive Polymarket’s content. You’ll also work on customer service APIs and build quick, effective internal solutions to support a growing and fast-moving organization. This is a great opportunity for someone who loves solving practical problems, building useful tools, and working closely with teammates across different departments.

• Build internal tools that make a difference. Help mission-critical teams (like customer support and operations) work smarter and faster by creating simple, effective tools.

• Move fast and ship often. You’ll launch small improvements and fixes regularly, without getting bogged down in red tape.

• Work across the stack. You’ll touch both frontend and backend code, using modern tools and frameworks.

• Collaborate constantly. You’ll partner with internal users to understand their needs, gather feedback, and make changes quickly.

• Write clean, reliable code. Help ensure the tools we build are easy to maintain and scale as we grow.

• Participate in code reviews. Learn from others and help keep our codebase high quality.

• 2+ years of professional software development experience

• Solid experience building full-stack web applications

• Strong skills in Typescript, Javascript (ES6+), and CSS

• Experience with React and Node.js (Next.js is a bonus)

• Great communication and collaboration skills—you enjoy working with others to solve real problems

• A bias for action—you’re comfortable shipping quickly and iterating based on feedback

• A builder’s mindset—you enjoy making tools that make life easier for others

• A passion for the blockchain, decentralized finance, & freedom of speech.

• (Plus) Experience building internal admin tools or dashboards

• (Plus) Familiarity with customer service tooling

• (Plus) Background in fintech, crypto, or data-heavy applications

• (Plus) Bachelor’s degree in Computer Science or equivalent

• Competitive salary & equity

• Unlimited PTO, Health, Vision, & Dental coverage

• 401k match

• Hardware setup — new MacBook Pro, big display, & accessories