Senior Backend Engineer — AI-Driven Trust

Stark Future SL is seeking a Senior Backend Engineer to design, develop, and operate production web services that power our AI-enabled backend. You will own critical components and collaborate across product, AI, and operations teams in a fast-moving Barcelona-based environment. Join a ambitious team building premium electric motorcycles and a scalable...

Linde Material Handling, a world-leading provider of forklifts and intralogistics solutions, seeks an AI/ML engineer to design, build and deploy AI solutions for internal and external customers. You will work on end-to-end ML models, MLOps, and innovative AI deployments in a global, collaborative setting. The role emphasizes end-to-end AI development,...

M-KOPA is hiring a permanent Senior Backend Engineer to join our Asset Sales group as we scale one of the most important parts of our FinTech platform. You will build distributed C# and .NET microservices on Azure, operating within an event-driven architecture at scale.This is an outcomes-driven role with end-to-end ownership from idea to production and...

Enginy, a Barcelona-based startup, is hiring a Backend Engineer to own core engine components from day one. You will design and build high-throughput systems, data pipelines, and integrations with customer platforms, while focusing on reliability and observability. We value engineers who own problems end to end, from design to production to monitoring....

Preply is looking for a Senior Full Stack Engineer in Barcelona to help shape the future of our learning platform. You will balance backend focus (Python/Django) with frontend work (React/Typescript), driving data-informed product decisions and scalable architecture. You’ll mentor peers, raise engineering standards, and partner with product, data, and UX...

New Relic, Inc. is seeking engineers for the Personalization team to build backend services and Kafka-based pipelines. You will design microservices and APIs, turn behavioral signals into actionable segments, and apply AI-assisted tooling in everyday engineering tasks. This role emphasizes collaboration, scalable architectures, and AWS cloud expertise. The...

New Relic in Barcelona, Spain, is seeking a skilled backend engineer to join the Personalization team. You will build, scale, and optimize backend services, Kafka pipelines, and microservices that expose user segments and behavioral models.The role emphasizes collaboration, architectural input, and hands-on execution across AWS infrastructure. You will work...

Pillar is hiring a product-minded Full Stack Engineer with backend depth to build the core of our platform in Milan or Barcelona. You will own features end-to-end, shaping backend data models, APIs, and product architecture while collaborating with frontend when needed. Italian or Spanish native is mandatory, plus professional English. We value...

Tappx, a fast-growing AdTech firm, seeks a PHP Backend Developer to design, implement, and maintain SSP projects with high scalability. You will lead full product life cycle from conception to production and monitoring, driving technical excellence and reducing debt.You will implement internal tools in PHP, ensure code quality with automated tests and CI/CD,...