Senior Backend Engineer.

<p><strong>Why this role matters</strong></p>
<p>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.</p>
<p>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.</p>
<h2>Tasks</h2>
<p><strong>What you’ll be doing</strong></p>
<p>Your work will directly impact how thousands of companies and candidates experience hiring. Here’s what that looks like:</p>
<ul>
<li>Collaborate with frontend engineers, product managers, and DevOps/platform teams to build meaningful features through our Agile SDLC/Kanban workflow.</li>
<li>Conduct peer code reviews and contribute to retrospectives to drive continuous improvement.</li>
<li>Define technical requirements and identify the best solutions to meet team goals.</li>
<li>Participate in engineering retrospectives focused on testing, architecture, automation, and coding standards.</li>
<li>Always think beyond the code - you’ll focus on delivering value and improving the user experience for our customers.</li>
</ul>
<p><strong>Who you’ll work with</strong></p>
<p>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.</p>
<h2>Requirements</h2>
<p><strong>What we’re looking for</strong></p>
<p>We don’t believe in checklists - but if most of these apply to you, we’d love to chat:</p>
<p> 5+ years of backend development experience.</p>
<p> 2+ years of experience with a strongly typed language or TypeScript.</p>
<p> Strong experience with RDBMS (raw queries or via ORM).</p>
<p> Solid background in unit and integration testing.</p>
<p> Experience with message brokers (SNS, RabbitMQ, Kafka, Google Pub/Sub, etc.).</p>
<p><strong>Bonus:</strong> Experience with Node.js, GraphQL, GCP or AWS, gRPC and protobufs.</p>
<p><strong>Bonus:</strong> Strong grasp of SOLID principles.</p>
<h2>Benefits</h2>
<p><strong>Our Values</strong></p>
<p> <strong>Impact Over Effort</strong> – We optimize for outcomes, not hours. What matters is the impact we generate for our teams and customers.</p>
<p> <strong>Yes, You!</strong> – It starts with you. We take ownership, act with initiative, and don’t wait for permission to make things better.</p>
<p>️ <strong>We Grow Together</strong> – As individuals and as a team. We invest in each other and get stronger collectively.</p>
<p> <strong>Ambition At Scale</strong> – We think big. We’re building something that matters, and we set the bar high for what’s possible.</p>
<p>We thrive in a fast-moving, collaborative environment. That means adapting quickly, challenging each other constructively, and spending meaningful time together in the office while trusting each other to work flexibly:</p>
<ul>
<li>We love collaborating in the office sharing knowledge with all colleagues, and we do understand the flexibility of working from home when needed</li>
<li>We adapt quickly and embrace change in a growth-oriented startup environment</li>
<li>We continuously challenge ourselves and each other to improve</li>
</ul>
<p>This role might not be ideal if:</p>
<ul>
<li>You prefer a highly structured environment.</li>
<li>You want a fully remote position.</li>
<li>You prefer minimal change and a slower pace.</li>
<li>You’re not excited about ownership and growth.</li>
</ul>
<p><strong>What’s in it for you?</strong></p>
<p> Apple hardware – The best tools for the job (MacBook).</p>
<p> Team events – Brunches, sports activities, and quarterly gatherings in Berlin.</p>
<p> Productivity from Everywhere – 104 days per year remote (post-probation), following our hybrid policy.</p>
<p> Competitive salary – Tailored to align with your experience level.</p>
<p> Relocation support – Assistance with paperwork, travel, and one month of furnished accommodation.</p>
<p><strong>What to expect from the hiring process</strong></p>
<p>We respect your time and keep things transparent:</p>
<p> Intro call (~30 min) – Let’s see if we’re a good match.</p>
<p> Hiring Manager Review – Your profile is assessed for technical and team fit.</p>
<p> Hiring Manager Interview (~60 min) – Dive into expectations and team dynamics.</p>
<p> Technical Interview (~60–120 min) – Demonstrate your skills.</p>
<p> Meet the Team <strong>(Optional)</strong> – Connect with your future colleagues.</p>
<p>You’ll always know where you stand - no black holes, no ghosting.</p>
<p>We welcome applications from individuals of all ages, abilities, genders, religions and diverse backgrounds. If you need assistance during the hiring process or in the workplace, let us know!</p>
<p>Don’t meet every requirement? No problem! We’re always open to exceptional candidates and value diversity in all forms.</p>
<p> Apply now – We’d love to connect with you!</p>