Top Tech Jobs & Startup Jobs in Madrid

Provide expert rater support by coaching and mentoring raters, creating unbiased annotation and gold sets, running client test rounds, analyzing datasets and KPIs, crafting client communications, and collaborating with R&D to improve AI advertising data quality.

Lead and mentor rater teams to ensure consistent, unbiased annotations and gold set creation. Facilitate client test rounds, analyze datasets and KPIs, craft client communications, collaborate with R&D, and independently evaluate and improve rating quality for AI-powered advertising systems.

Design end-to-end product experiences for BJAK's financial products. Create user flows, wireframes, prototypes and polished interfaces; build scalable design systems; collaborate with product and engineering; iterate using data and user feedback to improve usability and consistency across mobile and web.

Design and deliver high-quality iOS and Android mobile interfaces for fintech products: create wireframes, prototypes, production-ready UI, maintain mobile design systems, ensure platform guideline compliance, accessibility, and collaborate with engineers and PMs to iterate based on analytics and user feedback.

Design polished, user-centric mobile and web interfaces for BJAK's AI-driven financial products. Create wireframes, flows, prototypes and high-fidelity UI, evolve the design system, collaborate with product and engineering, iterate from user feedback and analytics, and ensure accessibility, responsiveness and visual consistency across devices.

Lead the Human Data function to deliver high-quality training data and evaluations. Manage Team Leads and AI Tutors, define annotation guidelines and QA processes, scale operations globally, recruit and develop talent, collaborate with engineering and program teams, and report outcomes to senior leadership.

The Senior FinOps & Cloud Analyst will analyze cloud costs, develop pricing models, and ensure healthy margins through data-driven insights on infrastructure and customer usage.

The Cloud Infrastructure Cost Analyst will analyze cloud usage, build reports, develop cost models, and optimize cloud spending by collaborating with engineering and finance teams.

Administer and optimize Atlassian platform (Jira Software/Service Management, Confluence) for 1,200+ users. Build complex Jira Automation and JMWE workflow logic, develop integrations with external systems, write Python/Go scripts and services, manage Jira Assets, implement SSO/SCIM and platform security, deploy Rovo AI agents, troubleshoot cross-team issues, and produce reports and dashboards.

Lead design, launch, and optimization of CRM journeys and campaigns across channels to increase player LTV, retention, and reduce churn. Define segmentation, test promotional mechanics, collaborate with Product to integrate gamified features, analyze CRM performance, and translate data into actionable insights to improve communications and bonus efficiency. Align CRM with Marketing and Product priorities.

Own SEO performance across multiple satellite sites and GEOs: build and scale sites, run technical SEO (indexing, redirects, speed, structured data), develop link-building and content strategies, perform keyword and competitor research, use AI to automate SEO workflows, and collaborate with writers to drive traffic and conversions.

Lead and grow a team of software engineers building Playgami platform services. Own technical quality, architecture, and delivery for reliable, scalable, low-latency distributed systems. Collaborate with product, design, and leadership while mentoring engineers and driving hiring and performance development.

As the first designer at turbopuffer, you'll own designs for products, web, and marketing, ensuring a mix of whimsy and professionalism across all surfaces.

Edit and repurpose poker video content, localize/dub into assigned GEO languages, manage and schedule short-form social accounts, track workflows and performance, use AI tools to support translation and operations, and assist with social media administrative tasks.

Manage daily crypto and revenue reconciliations, prepare management accounts and financial reports, calculate VAT/taxes, oversee AP/AR and GL posting, support audits, and assist with M&A readiness and process improvements.

Own end-to-end UI/UX and production-ready frontend code for an AI-native cybersecurity platform. Build and maintain a React+TypeScript+Tailwind design system, translate complex security workflows into intuitive interfaces, define human-in-the-loop AI interaction patterns, collaborate with backend engineers and security researchers, and contribute to component architecture and frontend standards.

Own end-to-end post-sales lifecycle for strategic EMEA hotel accounts: onboarding, adoption, retention, and renewal. Act as senior advisor on revenue strategy, run strategic reviews and advanced training, use AI-assisted analytics for ROI and churn risk, design adoption plans, mentor junior CSMs, and maintain accurate Salesforce account records.