Senior Full Stack Software Engineer

We’re looking for a Senior Full Stack Software Engineer to help shape the future of Smalls’ digital platform. In this role, you’ll work across our Rails and React stack to design, build, and ship high-impact features, while raising the bar for engineering quality and scalability. You’ll collaborate closely with product, design, and operations to solve complex business challenges, mentor teammates, and help us deliver seamless, delightful experiences for cat parents everywhere.

What You'll Do:

• Design, build, and ship features across our stack (Rails + React) with a focus on performance, reliability, and scalability.

• Own complex projects end-to-end—from architecture to deployment—while contributing clean, testable, maintainable code.

• Collaborate closely with product, design, and other teams to translate business problems into thoughtful technical solutions.

• Provide guidance and mentorship to other engineers, raising the bar for code quality, and engineering practices.

• Participate in code reviews, architecture discussions, and technical planning to ensure high standards across the team.

• Identify opportunities to improve and refactor the codebase, helping us scale sustainably.

• Troubleshoot and resolve system issues with urgency, always keeping the customer experience in mind.

• Contribute to building a strong engineering culture rooted in collaboration, learning, and delivering customer value.

What we'll love about you:

• 6+ years of software engineering experience, with proven full stack expertise.

• Strong proficiency with Ruby on Rails and React (or similar frameworks).

• Experience designing and working with APIs and relational databases (PostgreSQL preferred).

• Familiarity with infrastructure and tools like Docker, Redis, Heroku, Sidekiq, and background job processing.

• Solid understanding of software design principles and ability to balance technical trade-offs.

• Comfortable leading by example—mentoring peers, influencing technical direction, and driving projects to completion.

• Strong collaborator who thrives in cross-functional environments.

• Curious, adaptable, and eager to contribute beyond code, helping shape how a growing engineering team operates.

• Huge plus: experience in DTC or subscription-based businesses.

• Huge plus: familiarity with TypeScript, Node.js, or Shopify ecosystems.

• Huge plus: experience with React, React router (SSR), Ruby on Rails and tools like Heroku, Postgres, Shopify, Stripe, Contentful

• Huge plus: interest in scaling engineering processes and best practices.

What you’ll love about us:

• Mission-Driven Company: We love cats and we're here to make nine lives ten.

• People-Driven Company: We treat our people like people; we're committed to Smalls, and we work hard but also respect everyone’s lives outside of work.

• Data-Driven Culture: We love using data to guide decision-making where appropriate, but we also know when to move quickly and go with our gut.

• Competitive Salary: Make some $$$.

• Very Competitive Benefits: Fully paid Health, Vision, and Dental insurance. 4-day work week. Unlimited PTO.

• Fully Remote Office & Culture: Our team is spread across the US day to day, but we travel for department & company off-sites and retreats.

• Free Product: Free cat food every month.