Senior Software Engineer Elixir/Ruby (Brazil, Colombia, Costa Rica)

Senior Software Engineer (Elixir/Ruby)

7+ Years’ Experience

Elixir/Ruby with Fluency in Java or Kotlin

About the role:

We're looking for a kind and curious Senior Software Engineer to join our Customer Experience team. You'll work on a collaborative engineering team solving challenging problems in the luxury retail and e-commerce space, making it easy and compelling for individuals to consign high-end items. We're passionate about sustainability and building a circular economy for luxury goods.

As a senior contributor, you'll be hands-on in building features, influencing technical direction, mentoring junior engineers through code reviews and pairing, and leading significant initiatives.

Tech stack:

Java / Kotlin, Elixir, TypeScript, React / Next.js, GraphQL, Kafka, AWS/Lambda, PostgreSQL, DynamoDB, Ruby on Rails (legacy) Node.js

What you'll do:

• Produce high-quality, performant, and testable code contributing to company-wide initiatives
• Lead and mentor junior engineers through code reviews and pairing sessions
• Shape technical decisions and architecture for future software systems
• Deploy user-facing features to production and collaborate across engineering teams
• Work with AI coding agents as part of the team's modern development workflow

Required qualifications:

• 7+ years of professional software development experience
• Fluency in Java or Kotlin (primary backend languages)
• Proficiency with React, Next.js, TypeScript, HTML, and CSS
• Familiarity with RESTful APIs, Git, IDEs, and remote deployment tools
• Experience with event-based architectures, database fundamentals, and GraphQL

Preferred qualifications:

• Experience with Elixir (strongly preferred over Ruby — candidates with Elixir + Java will be prioritized)

• Experience with Kafka for event-streaming

• Background extracting microservices from a monolith

• Passion for retail, e-commerce, or circular/sustainable economy models

• Candidates with both Elixir and Java/Kotlin experience will be prioritized. Team is actively using AI coding agents; familiarity is a plus.