Why this role matters

JOIN helps thousands of businesses find the right people — faster, fairer, and with less friction. Our platform handles millions of candidate interactions, and our clients praise JOIN’s attention to detail and unmatched user experience.

We’re looking for a Backend Engineer to join our established engineering hub in Spain. You’ll be stepping into a mature, integrated team and helping push it forward: improving our platform architecture, raising our quality bar, and building robust, scalable features that tens of thousands of users rely on every day.

Tasks

What you’ll be doing

Your work will directly impact how thousands of companies and candidates experience hiring. Here’s what that looks like:
- Collaborate with frontend engineers, product managers, and DevOps/platform teams to build meaningful features through our Agile SDLC/Kanban workflow.
- Conduct peer code reviews and contribute to retrospectives to drive continuous improvement.
- Define technical requirements and identify the best solutions to meet team goals.




- Participate in engineering retrospectives focused on testing, architecture, automation, and coding standards.
- Always think beyond the code - you’ll focus on delivering value and improving the user experience for our customers.

Who you’ll work with

You’ll join our Backend Guild, collaborating closely with Product, Platform, DevOps, and Frontend teams. We care deeply about quality, performance, and a great developer experience – supported by clean architecture, code generation, linters, templates, and test-driven development.

Requirements

What we’re looking for

We don’t believe in checklists - but if most of these apply to you, we’d love to chat:
- 5+ years of backend development experience.
- 2+ years of experience with a strongly typed language or TypeScript.
- Strong experience with RDBMS (raw queries or via ORM).
- Solid background in unit and integration testing.
- Experience with message brokers (SNS, RabbitMQ, Ka

📌 Senior Backend Engineer (Barcelona)
🏢 join
📍 Barcelona