Top Tech Jobs & Startup Jobs in Barcelona

Design, implement, and maintain blockchain infrastructure and dApps. Develop and review smart contracts, optimize consensus and cryptography for scalability and security, troubleshoot performance and reliability issues, and collaborate with product and design teams to deliver features while staying current with blockchain advancements.

The role involves supporting the international partnerships process, building relationships with media partners, managing contracts, and attending partner recordings in Spain.

Own end-to-end enterprise partnerships with multinational employers: target account identification, stakeholder mapping, consultative discovery, multi-country proposal and contract negotiation, closing and account growth, coordinating regional execution, representing Jooble at industry events, and maintaining CRM pipeline and forecasts.

Quota-carrying sales role managing a defined territory and full sales cycle to drive ARR. Own territory planning, pipeline hygiene, forecasting, and cross-functional collaboration while using CRM and revenue tools to deliver predictable monthly ARR.

Lead end-to-end product design for a developer-focused verifiable data platform. Drive discovery, prototype and test solutions, design complex data-heavy workflows, build and maintain a scalable design system, and partner closely with product and engineering through implementation to raise the design bar.

Sourced Staff Engineer roles across Dragonfly portfolio requiring end-to-end ownership of product, infrastructure, and architecture. Build AI-native features, ship production systems at scale, work directly with founders, and move fast in ambiguous, early-stage environments.

Design and maintain complex LCA models (SimaPro, GaBi, openLCA), ensure ISO 14040/14044 compliance and EPD creation, translate LCA findings into business recommendations, build automated cloud-based LCA systems with API integrations and analytics, develop AI-driven tools to accelerate LCA/EPD generation, lead technical LCA tasks, and support pre-sales activities including PoCs and solution presentations.

Ensure reliability, performance, and resilience of Runware's distributed, GPU-backed production platform. Define SLIs/SLOs and observability, investigate incidents across services, databases, networking and queues, automate remediation and deployment safety, participate in on-call rotations, conduct RCA and implement long-term fixes, and collaborate on capacity planning and scaling.

Lead and run national and global advocacy campaigns in Austria: research and craft campaign strategy and messaging, mobilize supporters online and offline, translate and localize content, coordinate media and coalition work, manage petitions and website language accuracy, train and support associates, and represent CitizenGO publicly.

Lead reliability, scalability, and observability for cloud-based production systems. Administer Kubernetes and distributed data platforms, drive IaC and CI/CD, participate in on-call rotations, automate infrastructure, improve monitoring/alerting, and collaborate across teams to ensure operational excellence.