ppWe're looking for a skilled bMid-Level Data Engineer for one of our clients (TOP Startup) /b to design, build, and optimize data pipelines and backend services that ensure clean, reliable data across the organization. /p ul liDesign, develop, and maintain scalable ETL/ELT pipelines to ingest, transform, and load data from multiple sources. /li liWrite clean, efficient Python code with a focus on performance, memory efficiency, and maintainability. /li liCollaborate on database schema design (SQL and NoSQL) and optimize query performance for fast, accurate data access. /li liImplement unit tests, integration tests, and data quality checks to ensure pipeline integrity and prevent issues before production. /li liDeploy and iterate on pipelines using CI/CD practices and containerization tools such as Docker, and participate actively in code reviews. /li liStrong Python engineering skills (at least 3 years of professional experience) with emphasis on performance and production-quality code. /li liExperience building and operating ETL/ELT data pipelines, pipeline orchestration, and large-scale data ingestion.



/li liFamiliarity with SQL and NoSQL databases, including schema design and query optimization. /li liAbility to work autonomously, taking high-level requirements from scope definition to production. /li liCapability to quickly understand and contribute to unfamiliar codebases. /li liExperience with CI/CD workflows and containerization (e.g., Docker). /li liProfessional proficiency in both English and Spanish. /li liFull-time, permanent contract /li liSalary range of €35,000–€50,000 gross per year, based on experience /li liAn office with stunning views of Barcelona /li liFlexible working hours and hybrid work options /li liPaid day off on your birthday /li liWeekly fresh fruit, coffee, and tea /li liFriday happy hours (optional) /li liTeam-building events /li liHealth insurance and versátil compensation /li liYearly training budget for continuous growth /li /ul pbAbout Joppy /b /p pJoppy is a technology recruitment platform built for developers by developers. /p /p #J-18808-Ljbffr

📌 Mid Backend Engineer (Data-focused) (Python / ETL) | €35K - €50K
🏢 Joppy
📍 Barcelona