Full Stack Software Engineer

All Jobs >
Full Stack Software Engineer (contract)

Coin Flip is a global digital currency platform company, focused on providing consumers simple and secure access to buy and sell cryptocurrency. The company operates the world's largest network of cryptocurrency kiosks by transaction volume with more than 5,500 kiosks across 49 U.S. states, Puerto Rico, Canada, Australia, New Zealand, South Africa, Italy, Panama, Brazil Mexico, and Spain. Coin Flip’s digital currency kiosks make buying and selling major cryptocurrencies accessible and safe for consumers who wish to purchase their digital currency using cash.

Coin Flip also operates Coin Flip Preferred, a personalized over-the-counter service that provides investors with custom, white glove support for their cryptocurrency transactions. In 2022, Coin Flip launched Coin Flip Ventures, an investment group offering coaching, funding, and networking support to early-stage crypto and web3 projects.

Coin Flip was founded in 2015 by Daniel Polotsky, Kris Dayrit, Alan Gurevich, and Ben Weiss. Headquartered in Chicago, Coin Flip placed in the top 500 on the 2021, 2022, and 2023 Inc. 5000 list, and on the 2022 and 2023 Deloitte Technology Fast 500, was named the 2021 and 2022 #1 fastest-growing company in Chicago by Crain's, ranked in Chicago Tribune’s Top Workplaces in 2021 and 2022, and was awarded the 2021 and 2022 Stevie ® Awards for Customer Service.

To learn more about Coin Flip and how to get started on your digital currency journey, visit www.

Coin Flip.tech.

We’re looking for a Full-Stack Software Engineer to join our engineering team. This role will work across both backend services and frontend applications that support customer onboarding, transaction management, compliance workflows, and internal operational tools across Coin Flip’s product ecosystem. You’ll collaborate closely with product managers, designers, engineers, and operations teams to deliver reliable, end-to-end solutions backed by scalable backend systems and intuitive user experiences.

• Design, build, and maintain full-stack features across frontend applications and backend services.
• Develop and maintain backend APIs that support onboarding, authentication, transaction life cycles, and operational workflows.
• Build and enhance front-end experiences in customer-facing and internal web applications.
• Integrate systems with third-party services and external providers.
• Implement secure authentication and authorization using OAuth 2.0 flows.
• Work within a microservices environment to deliver scalable backend capabilities.
• Ensure applications meet high standards for security, performance, reliability, and observability (including monitoring).
• Participate in code reviews, technical design discussions, and architecture decisions.
• Write and maintain clear technical documentation.
• This role will work within Coin Flip’s existing application and infrastructure stack, including:
• Frontend:
  Next.js, React, Type Script (including Type Script v5), Node.js (primary for Wallet)
• APIs: RESTful APIs
• Infrastructure & Cloud: AWS (including S3), containerized services;
  Kubernetes;
  Helm and Terraform
• Authentication & Identity: OAuth 2.0 flows
• Monitoring/Observability:
  Monitoring platforms (e.g., Grafana)
• Version Control & CI/CD:
  Git-based workflows with CI/CD pipelines
• Developer Workflow:
  Experience with VS Code / Cursor debugging workflows

• 3+ years of experience as a software engineer working across frontend and backend systems.
• Strong experience building backend services in Golang and/or Java.
• Proficiency with Node.js / Type Script v5 (primary for Wallet).
• Experience building frontend applications using Next.js, React, and Type Script.
• Solid understanding of RESTful API design.
• Strong SQL…