Senior Salesforce Developer

We’re looking for a Senior Salesforce Developer to join our team in Madrid and help shape the future of contextual advertising as we continue to expand globally. Who We Are At Seedtag, we lead the way in contextual advertising with our machine learning-powered platform. Our technology provides superior brand safety, human-like content understanding, and advanced cookieless targeting, making ads more engaging and respectful. Founded by two ex-Googlers in 2014, we’ve grown to over 600 Seedtaggers across 18 countries, raising €250M to revolutionize digital advertising. Your Challenge Architect and implement scalable Salesforce solutions to meet complex business requirements, including the design of custom objects, triggers, Lightning Web Components (LWCs), and flows. Develop custom Salesforce applications and components, ensuring clean, maintainable, and high-performing code. Lead the integration of external systems via REST and SOAP APIs, creating a seamless ecosystem between Salesforce and other business tools. Design and implement monitoring tools and practices to ensure platform stability, data integrity, and performance optimization. Work closely with cross-functional teams, including Product, Sales, and Ad Operations, to gather technical requirements and propose solutions. Define and enforce coding standards, architecture guidelines, and quality assurance practices to maintain high development standards. Develop and maintain a robust CI / CD pipeline for Salesforce deployments, promoting an agile development process. Mentor junior developers and contribute to building a strong development culture within the team. Extend development efforts beyond Salesforce by contributing to backend services, scripts, or integrations that improve overall system efficiency. Stay updated with the latest Salesforce releases and evaluate new features or tools to enhance platform capabilities. What You’ll Need to Succeed Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field. 5 years of hands-on experience in Salesforce development, including Apex, Visualforce, Lightning Web Components, and custom object modelling. Proven experience with Salesforce architecture design, process automation, and platform optimization. Advanced knowledge of integration technologies, including REST APIs, SOAP APIs, and middleware tools. Strong backend development skills in a programming language like Java, Python, or Node.js. Deep understanding of SDLC, CI / CD pipelines, and development frameworks for Salesforce and general backend systems. Excellent analytical and problem-solving skills, with a focus on building scalable, maintainable solutions. Fluent in English, with excellent verbal and written communication skills. Experience in monitoring and debugging tools to ensure system health and performance. Nice to Have Salesforce certifications, such as Platform Developer II, Application Architect, or System Architect. Knowledge of the AdTech industry, including its unique processes and technologies. Familiarity with DevOps tools and platforms like Git, Jenkins, or GitLab CI / CD. Experience with event-driven architectures or other modern backend design paradigms. Understanding of data processing tools or platforms, such as BigQuery, Kafka, or Snowflake. Why Join Seedtag? Growth & Opportunity : A key moment to join with vast career development prospects. Flexibility : At Seedtag, we trust you to balance work and life effortlessly with the option to work from home, the office, or even the beach in our hybrid mode. Learning & Development : Online courses in ODILO, and optional English or Spanish group classes. Inclusive Culture : We foster a supportive environment that values personal growth. Fun & Connection : Participate in team activities, company offsites, and more! Additional Perks Flexible benefits plan : Restaurant, transportation, and kindergarten vouchers. Health insurance : Comprehensive coverage included. Gympass : Access to wellness programs and fitness classes. Seedsave Program : Exclusive discounts to help you save for the future. Ready to join the Seedtag adventure? Send us your CV and let’s grow together! At Seedtag, we’re committed to creating an inclusive environment where everyone can thrive. We welcome diverse perspectives as they fuel our innovation and growth. Please let us know if you require accommodations during the hiring process and we’ll ensure a positive and accessible experience.