Senior Fullstack Engineer (Rails, React)

At 8returns, we're transforming one of the most frustrating, environmentally damaging and costly aspects of e-commerce — returns.

As a Senior Fullstack Engineer at 8returns, you’ll have a direct impact on reducing the environmental and financial burden of e-commerce returns. With ownership over key product areas, you’ll help us scale from a powerful niche player into a global platform. If you thrive in a dynamic, fast-moving setting and want to be part of a small team solving global challenges, 8returns is where you’ll make a real difference.

• Ship new features end-to-end using Rails, React, and Postgres
• Improve performance, reliability, and developer experience across the stack
• Own parts of the product and drive technical decisions. We’re not big on layers of abstraction or committees
• Jump into support, bugs, or integration issues when needed - but always with the goal of building systems or tools that make them disappear
• Work closely with the founders and PM to prioritize ruthlessly and ship what matters
• Tinker with AI to find ways we can work faster, automate more, or build new things we couldn’t before

• You have 3+ years of experience shipping production web apps with Rails and React
• You’re a builder first - you care more about delivering value than arguing about patterns
• You’re comfortable jumping between frontend, backend, APIs, and data models
• You’ve got strong product instincts, you think about UX, not just code
• You can handle ambiguity and tradeoffs without freaking out
• You’re proactive, opinionated, and fast - you don’t wait to be told what to do

Bonus:

• Experience with Postgres, Heroku, AWS
• You’ve worked in early-stage SaaS or marketplace tools
• You’ve played with AI tools (ChatGPT, Claude, LangChain, etc.) and see them as part of your workflow

We’re async-first, low-meeting, high-ownership

• We value shipping fast over debating for weeks
• We run lean, stay profitable, and reinvest in product
• We care deeply about our merchants and solve real pain - not vanity metrics

If you’re excited to have real impact, move fast, and help shape a product from the ground up, we’d love to hear from you.