Top Remote Jobs in Barcelona

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.

Lead and scale the engineering organization for a regulated digital-asset custody platform. Own hiring, org design, engineering operations (on-call, incidents, release hygiene), delivery against roadmaps, audit and regulator readiness (SOC 2, SAMA, ISO 27001), and cross-functional alignment. Amplify an existing small, specialized team to meet regulatory and institutional requirements while preserving culture and retention.

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.

A referral submission form inviting people to share a friend's details and CV for future job matches. The employer will contact referred candidates when a suitable opportunity arises; applicants are asked to follow referral rules and guidelines.

Design and build data products on an AWS data platform using streaming and batch technologies. Create data contracts, debug pipelines and batch jobs, promote best practices, and collaborate with product teams and stakeholders to resolve data pipeline and contract issues.

Design and enhance cloud-native microservices for end-to-end payment lifecycles (SWIFT, SEPA), implement asynchronous integrations and streaming with Kafka, own observability and production stability, learn payment schemas, and collaborate with a distributed Agile team to deliver features.

NVIDIA seeks a Senior Software and System Architect to lead cloud-networking architecture, design cutting-edge system architecture for DPUs & NICs, and coordinate with global teams.

Drive performance and scale characterization for NVIDIA DGX Cloud across Kubernetes and NVIDIA components. Build automated tests, monitoring, and CI/CD for large-scale GPU-accelerated workloads. Triage and resolve distributed systems performance issues, collaborate with researchers and upstream open-source communities, and present findings at conferences.

Partner with Northern Europe leaders to deliver people strategy with emphasis on Learning & Development. Lead HR processes (performance, talent planning, org design), design and deliver L&D programs, drive engagement and high-performance culture, support employee relations and compliance, and use data to evaluate learning impact.

Support Central Europe Marketing Controlling with budgeting, BME spend tracking, financial reporting and analyses, month-end activities, master data maintenance, process improvements, and ad-hoc finance support for marketing teams.

Support Key Account team with sales, stock and portfolio reporting, activity and performance tracking, store visibility checks, invoice and listing support, and operational trackers. Gain cross-functional exposure across sales, marketing, and supply chain in a hybrid internship.

Create short vertical UGC videos using a smartphone following provided scripts/guidelines. Speak naturally on camera, film extra candid clips for authenticity, and deliver raw high-quality footage. Provide portfolio, location, languages, and availability when applying.

Remote research internship supporting semiconductor and AI industry analysis: data collection, market research, basic financial modeling, preparing reports and presentations, attending team meetings, and developing research skills with mentorship and feedback.

Serve as a domain expert advisor to sales and customer success, solving complex fraud and financial crime challenges. Engage senior customers, build business cases, influence product roadmaps, produce thought leadership, represent BioCatch at events, and contribute market and threat insights to internal teams.

Own and execute Decoda's content and inbound growth strategy across social, blog, SEO, and paid channels. Produce short-form video and written content, design experiments to optimize engagement and cost-per-lead, manage paid and organic performance, implement analytics and attribution (GA4, UTM), track funnel metrics, and collaborate with leadership to align content with sales and brand priorities.

Lead Gradial's EMEA commercial expansion: own net-new enterprise pipeline, close complex deals, build regional GTM, hire and scale the EMEA sales organisation, and align cross-functional teams to regional priorities.

Build and maintain a high-performance Shopify Online Store 2.0 storefront: create responsive, accessible components and landing pages; optimize Core Web Vitals; integrate payments, CRM/email, PIM/ERP and analytics; enable A/B testing and feature flags; implement GA4 and server-side tagging; ensure quality via tests, CI/CD, monitoring, code reviews, and documentation.

Own the end-to-end digital customer journey for an e-commerce storefront (Shopify): create wireframes and hi-fi Figma prototypes, design conversion-focused pages (PDP/PLP/checkout), build a modular design system, deliver pixel-perfect handovers, and collaborate with Growth, Email/CRM, and Support to improve conversion and retention.

Develop and iterate creative strategy for social ads: translate data into hypotheses, write high-converting scripts and UGC, brief and coach creators and editors, build scalable test-and-learn frameworks, and identify platform trends to drive conversion and revenue.