Top Remote Jobs in Madrid

Design, develop, and deploy high-volume, low-latency Java applications and microservices. Lead full development lifecycle, write testable code, manage releases, improve architecture, and support Agile/Scrum processes.

Own daily operations and quality assurance for an internal AI-powered growth platform. Test releases, rule changes, edge cases, and regressions; document and verify bug fixes; monitor platform and agent activity; manage approval queues; evaluate agent output; escalate risks; and maintain test plans, QA checklists, runbooks, and release notes.

Provides first-level technical support to e-commerce customers integrating websites and mobile applications with Constructor’s platform. Responsibilities include onboarding customers, explaining APIs and libraries, troubleshooting integration issues, configuring product catalogs and search indexes, communicating with technical teams, documenting solutions, and improving onboarding processes.

Provides first-level technical support to e-commerce customers integrating websites and mobile applications with Constructor’s platform. Responsibilities include onboarding, API and library guidance, troubleshooting, catalog and index configuration, customer communication, documentation, and process improvement. The role requires REST and API knowledge, strong communication, problem-solving, and customer support experience, with preferred familiarity in JSON, CSV, Postman, HTTP, JavaScript, search concepts, and integration patterns.

Own end-to-end B2B integrated growth campaigns that generate pipeline and accelerate opportunities. Develop campaign strategies, channel mixes, budgets, messaging, enablement, and quarterly plans across email, webinars, events, content, direct mail, referrals, and demos. Partner with marketing, sales, operations, vendors, and BDRs to execute campaigns, measure attribution and ROI, optimize performance through testing, and create repeatable playbooks. The role also explores AI and emerging technologies for segmentation, personalization, content, and workflow automation.

Oversee the full lifecycle of a hyperscale data center project, including design, pre-construction, construction, commissioning, and close-out. Manage budgets, schedules, quality, safety, risks, vendors, documentation, and stakeholder relationships. Serve as the key client interface while coordinating subcontractors, regulatory authorities, and project teams to ensure successful delivery. The role requires strong technical knowledge of data center infrastructure, project management expertise, fluent English and German, and full-time onsite availability in Berlin.

Own the email and lifecycle marketing growth roadmap for GetQR by developing audience segments, personalized customer journeys, and structured experiments. Analyze behavioral and email performance data, conduct A/B testing, improve conversion, activation, revenue, and retention, and collaborate with Email, Growth, Product, and Analytics teams. The role also involves customer research, copywriting, deliverability monitoring, experiment prioritization, and documenting results.

Own end-to-end migration of business domains from a legacy desktop ERP to a modern web ERP. Design data models, APIs, tenant isolation, cutover and rollback plans; execute safe live-data migrations; maintain production reliability; review backend and frontend code; collaborate with Product; mentor engineers; and occasionally modify legacy C++ code.

Build and maintain end-to-end ERP features across Django backend services and Next.js frontend applications. Develop models, APIs, database migrations, tenant isolation, and row-level security; understand legacy C++ desktop behavior; write tests, monitor production releases, conduct code reviews, and collaborate with senior and junior engineers. The role requires independent delivery, strong communication, attention to quality, and a focus on reliable, performant systems.

Open application for a remote, high-ownership role at a B2B agency focused on AI-era organic search. Responsibilities include running experiments, optimising content for LLMs and AI visibility, documenting learnings, using proprietary tools, collaborating async with clients and teammates, and improving processes to drive measurable search and content outcomes.

Designs and operates scalable production data infrastructure for high-volume athlete, sensor, and time-series data. Builds streaming ingestion, graph models, low-latency ML feature systems, evaluation and monitoring infrastructure, and multi-tenant architectures. Ensures data provenance, lineage, observability, reliability, and correctness while collaborating with ML engineers, data scientists, sport scientists, and domain experts. Requires expertise in Python, SQL, streaming technologies, AWS, graph data modeling, causal inference, AI evaluation, and telemetry systems.

Design polished interfaces for the vCluster Platform, partnering closely with frontend, backend, product, and engineering teams. Translate complex technical problems and ambiguous requirements into intuitive B2B product experiences. Conduct UX research and competitive analysis, communicate design decisions to stakeholders, and maintain visual consistency with the company brand. The role focuses on engineer-facing infrastructure products and requires technical curiosity, strong visual design, user empathy, and autonomous execution in a distributed startup environment.

Owns end-to-end test strategy, designs scalable backend and UI automation frameworks, integrates automated testing into CI/CD pipelines, performs exploratory testing, and advocates for testability and reliability across engineering and product. The role requires strong programming, Kubernetes and distributed-systems knowledge, debugging ability, and cross-functional ownership in a fast-moving startup.