Data Engineer

Data Engineer at Cobalt Streamworks in Barcelona | JobFluent - Jobs - Companies - For employers - English Filled This offer is not available anymore ### Cobalt Streamworks Category Industry Workplace Onsite Hours Full-Time Internship No Skills Share offer ## Job Description About the companyFrom the creators of Vilynx — a Barcelona AI startup acquired by Apple — comes Cobalt Streamworks AI: a bold new venture redefining how information is verified and represented at massive scale. Based in Barcelona’s vibrant tech hub near Passeig de Gràcia, Cobalt Streamworks AI is building innovative AI systems focused on trust, accuracy, and impactful technology that challenges industry norms. Recently, Cobalt Streamworks AI was named by Creandum to their #EuroSeed50 list — highlighting the most promising early-stage startups in Europe — an honor that reflects the strong belief in our mission and team. We are a small, ambitious group dedicated to building real solutions with grit, heart, and a culture of authenticity. About the roleYou’ll architect, build, and maintain data pipelines handling both batch and streaming workloads at scale. Your expertise in big data technologies and modern data storage will be crucial. You’ll also engage with emerging information representation systems like embeddings, Knowledge Graphs, and search engines to help shape the future of AI-driven data. What you’ll do - Design and maintain scalable, high-throughput data pipelines and ETLs - Architect data storage and retrieval systems for efficient processing - Collaborate closely with the team on system design and data modeling - Integrate and experiment with ML-based data representation techniques - Help build a culture of engineering excellence and innovation What we’re looking for - 3+ years experience working in data engineering or big data environments - Hands-on experience with big data pipelines (Spark, Hadoop, Kafka or equivalent) - Strong programming skills (Python or Scala preferred; Java welcome) - Proficiency with SQL and NoSQL databases (Cassandra a plus) - Familiarity with search and graph databases (Elasticsearch, Neo4j) a plus - Language: B2+ level in either English or Spanish (fluency in either is acceptable) - Curious, driven, and ready to help build something meaningful from the ground up - Availability to work in hybrid mode Why Cobalt Streamworks AI? - Work alongside a founder with a proven track record in AI startups - Join a company dedicated to building AI for good — focused on trust and impact - Competitive compensation package plus stock options - Based in Cloudworks, a dynamic co-working space near Passeig de Gràcia in Barcelona; enjoy the perks that come from being part of Cloudworks, like gym subscription and restaurant discounts - A supportive, inclusive, and horizontal culture that values authenticity and growth Hiring process - Conversation-based (no coding tests) - Initial chat with CTO focused on your experience and projects - System design interview (onsite preferred) - Cultural fit interview with CEO - Offer We welcome applicants from diverse backgrounds who bring passion, curiosity, and resilience. If this sounds like you, get in touch — we’re excited to see what we can build together. #### Read full job description ## About Cobalt Streamworks - Website - Industry Ai - Headquarters Barcelona, Spain - Company Size 10-50 - Founded 2024 From the founder of Vilynx — a Barcelona AI startup acquired by Apple — comes Cobalt Streamworks AI: a bold new venture redefining how information is verified and represented at massive scale. Based in Barcelona’s vibrant tech hub near Passeig de Gràcia, Cobalt Streamworks AI is building innovative AI systems focused on trust, accuracy, and impactful technology that challenges industry norms. Recently, Cobalt Streamworks AI was named by Creandum to their #EuroSeed50 list — highlighting the most promising early-stage startups in Europe — an honor that reflects the strong belief in our mission and team. We are a small, ambitious group dedicated to building real solutions with grit, heart, and a culture of authenticity. ## Other data engineer jobs that might interest you...