Top Remote Jobs in Madrid

Six-month M&A internship supporting senior bankers and clients on complex financial transactions. Responsibilities include financial and statistical analysis, company and industry research, client presentations, marketing materials, administrative and project work, and deal execution support. Candidates should demonstrate strong academic performance, analytical and communication skills, teamwork, commercial awareness, enthusiasm, and fluency in Spanish and English.

Develop and modify mobile games in Unity using C#, prototype gameplay variations, and build internal tools for creative production and playable ads. Rapidly iterate on mechanics, visuals, UI, cameras, and features; debug and optimize performance; use advertising performance data to improve concepts; collaborate with Creative, Game Development, and User Acquisition teams; and explore AI-assisted workflows and emerging technologies.

Manage billing and account support across email and live chat for global InvestingPro subscribers. Handle cancellations, retention and win-back conversations, refunds, billing questions, payment updates, invoices, and subscription changes. Use AI-assisted tools to draft and translate responses, assess refund eligibility, resolve administrative issues, and escalate complex technical or financial product questions. Maintain high accuracy, efficiency, customer satisfaction, and retention.

Sell Sphere's compliance AI platform across Europe: full-cycle outbound and account expansion, close SMB and mid-market deals, build GTM playbooks and revops stack, and scale the EMEA sales function with the Founder.

Seeking a Senior Full-Stack Engineer to develop AI-driven web and mobile applications, focusing on scalable architectures and API integrations. Collaborate with product teams to translate features into technical solutions.

Develop and support real-time multi-axis motion control applications, commission and troubleshoot systems, optimize electromechanical performance, deliver demos and technical training, collaborate with R&D, write application notes and build customer/partner relationships. Frequent customer travel within the DACH region required.

Own Langfuse's events and community developer-relations motion: plan and run conferences, meetups, workshops, demos, and customer events; speak and run technical sessions; build repeatable event assets and runbooks; partner with product, sales, and ClickHouse; capture feedback into messaging, docs, and product improvements.

Lead end-to-end ML work: define product problems as ML tasks, prototype and ship models (ranking, retrieval, LLM agents), build evaluation and monitoring, and measure marketplace impact (bookings, retention, GMV). Collaborate with engineering, product, and growth to deploy production models and improve LLM reliability.

Lead group accounting, consolidation, tax and transfer pricing, and external audit for a multi-entity international SaaS group. Own balance sheet integrity, month‑end and year‑end close, reconciliation frameworks, and regulatory compliance. Drive and supervise agentic automation for close, reconciliations, tax computations and controls, codifying judgement into rules and ensuring auditability.

Design and prototype interactive features for a next-generation code editor, build keyboard-driven workflows and AI-agent interactions, implement UI in the product, and collaborate closely with engineers on performance-focused developer tools.