Empleos de junior java software engineers en Barcelona

Overview In this role you will advance Elasticsearch at scale, focusing on distributed indexing, cluster coordination, and data safety across nodes. You’ll work with cross-functional teams to push scalability, performance, and resilience, shaping how data is indexed and accessed in large clusters. You will troubleshoot complex distributed system challenges...

 (English version at the end.)Senior Fullstack Engineer – HealthTech | Internacional, Remoto | Impacto real y crecimiento acompañado¿Quieres evolucionar como profesional, seguir desarrollándote y no sólo cambiar otra vez de empresa?¿Buscas un entorno donde tener impacto y ownership, además de coaching y mentoring, para convertirte en la versión...

Overview As a Senior Software Engineer on the Elasticsearch - Distributed Systems team, you will advance scale, performance, and resilience across the cluster. You’ll improve indexing and coordination across nodes, and help push the system to handle larger shards and datasets. You’ll diagnose complex performance and concurrency issues and mentor others....

One of the companies we collaborate with at Joppy is looking for a **Senior Network & Security Engineer** to design, administer, and maintain reliable network and security infrastructure supporting critical IT and operational technology environments. **🎯 Responsibilities** - Lead the design, deployment, and integration of enterprise and industrial...

Overview As a Principal Software Engineer on the Elasticsearch - Search Infra team, you define and drive the core search infrastructure for Elasticsearch. You will shape the long-term technical direction, contribute to indexing, retrieval, and relevance, and mentor a global group of engineers. You’ll turn research in search internals into scalable,...

Overview As a Principal Software Engineer on the Elasticsearch - Search team, you drive the vector search capabilities that power fast, relevance-driven results. You will design and implement new vector features, improve existing functionality, and resolve complex bugs within a globally distributed team. You’ll work closely with engineers, contribute to...

As you contemplate your future, you might be asking yourself, what’s the next step? Start your journey with us! We are looking for a backend architect to join the architecture team in charge of our systems. As one of Europe's top e-commerce sites, our platform serves millions of daily transactions in 40+ countries and has very demanding requirements...

**WE ARE:** Adaptive is a product-led financial technology company with deep expertise in capital, commodity, and digital markets. We build technology for investment banks, investment managers, fintechs, and capital markets service providers. Our consulting teams work with clients to implement and extend that technology, but our starting point is product...

**Multiverse Computing** Multiverse is a well-funded, fast-growing deep-tech company founded in 2019. We are the largest quantum software company in the EU and have been recognized by CB Insights (2023 and 2025) as one of the 100 most promising AI companies in the world. With 180+ employees and growing, our team is fully multicultural and...

**WE ARE:** Adaptive is a product-led financial technology company with deep expertise in capital, commodity, and digital markets. We build technology for investment banks, investment managers, fintechs, and capital markets service providers. Our consulting teams work with clients to implement and extend that technology, but our starting point is product...

Metyis is growing! We are looking for an intern to start their professional journey with us, within our Data and Analytics team, based in Barcelona or Madrid. **Who We Are** Metyis is a global and forward-thinking firm operating across a wide range of industries, developing and delivering AI & Data, Digital Commerce, Marketing & Design solutions and...

# **Principal Software Engineering Lead** ## **Unified Trial Solution – Clinical Trial Site and Investigator | Evinova (AstraZeneca Group)** **About Evinova:** Are you ready to be part of the future of healthcare? Can you think big, be bold, and harness the power of digital and AI to tackle longstanding life sciences challenges? Then Evinova, a health...

**About Keyfactor** Our mission is to securely connect the world: humans, machines, and AI. Keyfactor is the leader in trust infrastructure for AI and machines, helping the world's largest enterprises and government agencies take control of the cryptographic identities that safeguard every digital interaction. Behind the platform is a global team of people...

As you contemplate your future, you might be asking yourself, what's the next step? Start your journey with us! We're seeking an experienced **Engineering Manager** to join our Customer eXperience vertical in Barcelona (Hybrid) to lead a high performing team of cross-functional specialists, fully dedicated to one important mission - making travel...

Actualmente, tenemos un puesto vacante para un/a profesional Senior Java con amplia experiencia con Microservicios y que haya trabajado con metodología TDD. Además, podrás trabajar con otras tecnologías como Kafka, Cloud, CI/CD, etc. Buscamos una persona entusiasta y dinámica con interés en trabajar en nuestra área de proyectos internacionales. Por...

About Liferay Liferay is a uniquely profitable B2B enterprise software company with 1,000+ fiery-eyed employees all across Europe, the Americas, the Middle East, Asia, and Africa. As a renowned provider of enterprise open source technologies, we have been recognized by Gartner for empowering businesses around the world to solve complex digital challenges....

About Neo4j Neo4j is the graph intelligence platform that transforms data into knowledge to power the next generation of intelligent applications and AI systems. It includes enterprise-ready knowledge graphs for accurate, explainable, and governed AI; the most comprehensive, trusted, and easy-to-deploy graph capabilities across any environment and data...

Principal Software Engineer - Performance Tuning - Elasticsearch Spain Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of...

Smadex is a cutting-edge ad-tech company: we process more than 4,5 million ad requests per second, replying under 100ms (for reference, the Google search engine handles ~76,000 QPS). Every day we generate several TBs of data that need to be processed, analyzed and aggregated, so our real-time components get smarter every day. We need you to help us keep our...

Make a tangible impact every day When companies choose Alan, HR teams are the ones making it happen: enrolling employees, managing payroll contributions, and handling billing. Our mission is to make these processes frictionless, reliable, and even delightful. As a Software Engineer on this team, you will: * Engineer our employee affiliation engine: reliably...