**Backend Tech Lead (Python) – Build Singularu’s Technical Future** Singularu is commitment, talent, and passion. **We are Singularu, and we create jewels so everyone can shine!** Singularu is a young, ambitious brand with a team of +350 people united by a single goal: delivering the best service and shopping experience to our customers—and, of course, the finest jewels. **About the Role** We’re looking for our first **Backend Tech Lead**. We’re not just seeking someone who writes excellent code—we need a technical reference figure with the vision required to lay the foundations of our engineering practice, define architectural standards, and lead the growth of our technical team. You’ll be the owner of backend architecture at Singularu, working directly with critical business areas (Data, Operations, Logistics) to transform complex challenges into scalable, robust technological solutions. **Your Key Strategic Challenges:** * **Architecture Definition:** Lead the transition from internal systems to a modern, scalable, highly available architecture. * **Engineering Culture:** Establish quality standards, code review processes, testing practices, and documentation guidelines that define how development happens at Singularu. * **Mentorship & Leadership:** Serve as the technical guide for the current team and actively contribute to the future expansion of the development area. * **Ecosystem Evolution:** Lead the migration from legacy processes and manual tools to professional, automated services. * **Decision-Making:** Be the technical voice in selecting new technologies and tools (GCP, integrations, security). **What You’ll Do:** * Design and oversee the development of critical Python-based services. * Ensure data integrity and security across all integrations (APIs, WebSockets, GraphQL). * Optimize and professionalize our CI/CD pipeline and Docker-based deployments. * Collaborate closely with the Data team to ensure an efficient data infrastructure. * Proactively manage technical debt through strategic refactoring. **What We’re Looking For:** * **Solid Experience (+5 years):** With a strong focus on Python and the design of complex systems. * **Architect Mindset:** Ability to see the "big picture" and design systems capable of supporting the growth of a brand with +300 people. * **Proven Leadership:** Prior experience mentoring other developers or taking full technical ownership of projects from inception. * **Technical Excellence:** Deep knowledge of security (OWASP), transactionality, databases, and DevOps (Docker/GCP). * **Pragmatism:** Ability to balance technical perfection with business needs (delivering real value). **What We Offer:** * **Real Impact:** You’ll have a blank canvas to shape both architecture and technical culture. * **Permanent Contract.** * **Technical Ownership:** Your role won’t be about executing tasks—you’ll own the technical vision. * **On-site in Valencia:** A vibrant environment with a team growing at startup speed but backed by the stability of a large company. * Training plan, coffee, fruit, and exclusive discounts ✨ **Our Team Values** **OUR GIRLS ALWAYS COME FIRST** **TEAM WORK, DREAM WORK** * **TRUST THE PROCESS** **✨ ALWAYS PROACTIVE & POSITIVE** **ENJOY ALL OF IT** At Singularu, it’s our values that make us shine—inside and out. That’s why we commit to making our company a space where **equal opportunity and diversity come first.** If this role resonates with you and you’re eager to grow, **take the step and apply!** ✔️ * Permanent * Full-time * 46001, Valencia, Valencia, Spain * Technology