Senior Software Engineer

Location: Madrid, Spain (Remote — with regular in-person collaboration at a local WeWork alongside our Madrid tech team)About MediaRadar:MediaRadar, now including the data and capabilities of Vivvix, powers the mission-critical marketing and sales decisions that drive competitive advantage.

Our competitive advertising intelligence platform enables clients to achieve peak performance with always-on data and insights that span the media, creative, and business strategies of five million brands across 30+ media channels. As we expand our footprint from the US into Europe and deepen our focus on media intelligence, we're looking for engineers who can help scale our platform and products globally.

About the Role

We're looking for a Senior Software Engineer to independently own complex, ambiguous problems across our platform. You'll design, build, and scale systems that power MediaRadar's competitive advertising intelligence platform — with a particular focus on developing agentic, AI-driven capabilities that deliver customizable insights to our clients.Stack Highlights:Core: Strong Python proficiency is a must; comfort with additional languages (C#, Java, Node.js) a plus.Cloud: Hands-on experience with AWS and/or Azure is a must.Data: SQL (SQL Server, Postgres), with Databricks/ETL experience a plus.AI/Agentic: Experience with LLM-powered or agentic systems (LangChain, multi-agent orchestration, RAG) is highly valued.Productivity: Use of modern AI coding assistants (Copilot, ChatGPT) to accelerate development.Requirements

Key Responsibilities

Independent System Ownership: Design, build, and own complex, ambiguous features end-to-end, operating with minimal supervisionAgentic Insights Studio: Lead the buildout of agentic, LLM-powered workflows that deliver customizable, automated insights for end usersCloud Architecture: Architect and scale cloud-native systems (AWS/Azure) that support our expansion from the US into European marketsMentorship: Mentor junior engineers and raise the technical bar across the team through code reviews and shared best practicesEngineering Excellence: Drive testing, observability, code quality, and documentation standards across your area of ownershipCross-Functional Partnership: Partner with Product, Data, and Operations to shape technical roadmap and integration strategy across the MediaRadar/Vivvix data platforms

Key Qualifications

Experience Level: 4-6+ years of professional software engineering experience (Senior level)Python: Expert-level Python is required; comfortable owning production systems end-to-endCloud: Proven experience architecting and operating systems on AWS and/or Azure is requiredAgentic/AI Experience: Hands-on experience building LLM-powered or agentic systems (LangChain, multi-agent orchestration, RAG) is very strongly preferredIndustry Relevance: Background in adtech, advertising, media intelligence, analytics, or sports-media data is highly valuedGlobal Scope: Comfortable working across distributed, international teams as we expand from the US into EuropeSoftware Rigor: Strong grasp of architecture and design patterns, with a track record of mentoring other engineersProfessional fluency in written and spoken English: Strong communication skills to effectively collaborate with distributed engineering, product, and business teams across North America, India, and EuropeSkill Focus for 2026/2027:Agentic Insights: Building and scaling AI-driven, customizable insight generation for our Insights Studio product lineGlobal Expansion: Ensuring platform scalability and reliability as MediaRadar expands from the US into European marketsSports & Media Intelligence: Extending our data and attribution capabilities into sports-focused advertising and media verticalsBenefitsAt MediaRadar, we are committed to creating an inclusive and accessible workplace where everyone can thrive. We believe that diversity of backgrounds, perspectives, and experiences makes us stronger and more innovative. We are proud to be an Equal Opportunity Employer and make employment decisions without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, or any other legally protected status.In accordance with the EEO-1 reporting requirements, we collect demographic data as part of our efforts to ensure fair and equitable hiring practices across all levels of our organization.We are committed to ensuring our recruitment process is accessible to all applicants. If you need a reasonable accommodation during the application or interview process, please contact us at careers@mediaradar.com .We're excited to meet people who share our values and want to build the future with us!