Top Tech Jobs & Startup Jobs in Spain

As a Distributed Systems Engineer, you'll design and evolve LiveKit's core systems, implement resilient architectures, and enhance reliability and developer velocity, working on critical features in production environments.

Build post-training infrastructure for voice and text agents, including training environments, verifiers, synthetic data pipelines, evaluations, and model release gates. Run end-to-end training experiments, select open-weight models, improve tool-using and multi-turn behavior, deploy models to production, and iterate using real-world usage. The role emphasizes Python engineering, reinforcement learning, GPU-based training, data quality, reward design, and production machine learning.

Lead the company’s ML/AI platform from experimentation through production, including SageMaker training infrastructure, model serving, inference pipelines, MLOps, and Java microservice integrations. Set AI/ML technical direction, develop GenAI and LLM retrieval and agent architectures, establish evaluation and safety guardrails, and partner with data science, DevOps, product, and engineering leadership on scalable ML roadmaps.

Lead end-to-end product development for a web application in Assessments & Certifications. Define and prioritize requirements, collaborate with UX and engineering, run agile ceremonies, write epics and user stories, use data to drive prioritization, mentor the team, and partner with stakeholders to improve booking, test management, and preparation resource experiences.

Lead global marketing strategy and multi-market GTM for a FinTech scale-up from Bali. Own integrated paid/owned/earned campaigns, localization frameworks, performance marketing (CAC, LTV, ROAS), content/SEO authority building, and compliance with regional financial advertising standards. Mentor junior marketers and collaborate cross-functionally with Product, Legal, and Compliance to scale international launches.

The Java Developer will create user information solutions, design interfaces, develop applications, and support users. Responsibilities include system analysis, database integration, and troubleshooting across multiple environments.

Lead marketing strategy and execution for Spain across William Hill and 888 brands. Drive digital customer acquisition, manage marketing budget and agencies, lead local team, optimise campaigns, creatives and customer journeys, collaborate with cross-functional teams, monitor performance and competitors, and present insights to senior stakeholders.

Deploy enterprise-grade AI solutions, focusing on RAG pipelines and LLM workflows, while optimizing solutions on the Stack AI platform for strategic accounts.

Brainly invites interested candidates to submit their CV and skills for potential future openings as the company continues to grow and adapt quickly.

The Senior Infrastructure Engineer will own the cloud stack, enhance observability, architect browser cloud infrastructure, debug operational issues, and mentor other engineers, while managing multiple production workloads at scale.