Top Tech Jobs & Startup Jobs in Barcelona

Create and maintain product documentation, blog posts, website copy, and walkthrough videos. Build and manage a content calendar, identify growth opportunities, use internal tools and data to optimize content, and collaborate with product and engineering to translate technical concepts into clear, growth-focused content.

Own and scale outbound revenue infrastructure across client accounts. Build advanced Clay enrichment workflows, intent-based targeting systems, API and automation integrations, AI-assisted prospecting workflows, and email deliverability infrastructure. Partner with strategists to improve campaigns and performance, establish technical standards, document processes, test emerging GTM technologies, troubleshoot complex systems, and mentor junior and mid-level engineers.

Lead production planning and execution for external art vendors across multiple AAA projects. Manage schedules, dependencies, risk mitigation, vendor collaboration, and status reporting. Drive process improvements, ensure alignment with art leads and stakeholders, and support environment art pipelines and cross-studio delivery in an onsite Barcelona role.

Invites candidates interested in data to submit an open application (resume and brief cover letter). Applicants will be considered for future suitable roles; the company values diversity and innovation.

Lead the evolution of Proton's cloud storage platform as a Senior Product Manager by driving product innovation, defining success metrics, and collaborating with teams to execute strategies.

Work on YDB distributed storage and database systems to maximize performance on modern and legacy hardware (NVMe, HDD, DPUs). Reengineer components for low-latency, high-throughput workloads, profile and debug production systems, and design resilient distributed storage primitives. Collaborate on incident resolution and production deployments to support Nebius cloud services.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

Own the cryptographic core: select and evolve MPC/TSS schemes, author protocol reviews, implement and review Rust/Go production crypto, lead audit responses, prepare incident fixes, publish and represent externally, and teach/mentor engineers while scaling the crypto function.

Design, implement, operate, and improve distributed backend systems at scale. Build event-driven architectures, improve production reliability, instrument services, optimize performance, establish safe deployment practices, and mentor engineers. The role partners with Product and engineering teams to define success metrics and guide technical direction.

Design, develop, and maintain high-quality web applications using CodeIgniter and PHP. Collaborate with cross-functional teams to define and ship features, ensure application performance and quality, identify and fix bugs, and maintain code quality and automation.

Own the commercial and strategic health of a portfolio of SaaS accounts, including renewals, expansion, upselling, QBRs, account planning, stakeholder relationships, and client communication. Partner with Customer Success Technical Managers to align platform usage with account strategy. Maintain accurate account documentation and proactively identify opportunities to increase client value and retention.