We’re looking for a Salesforce Developer to join our team in Madrid and play a key role in shaping the future of neuro-contextual advertising at a global scale.

Who We Are

Seedtag is the leading Neuro-Contextual Advertising Company.
We are redefining how advertising works in a privacy-first world by moving beyond keywords and cookies, towards understanding human emotion, intent, and context.

Powered by advanced AI and neuroscience, our proprietary technology, Liz, delivers a deep, human-like understanding of content and attention. This enables brands to connect with audiences at the right moment, in the right mindset, with ads that are relevant, engaging, and respectful of the user experience.

Founded in 2014 by two ex-Googlers, Seedtag has grown into a global company with 700+ Seedtaggers across 17 countries, backed by €250M in funding, and expanding rapidly across the open web and Connected TV.

We’re not just building technology, we’re rewriting the rules of advertising.

Your Challenge

As Salesforce Developer, you will:

• 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?

This is a defining moment to join Seedtag, a company that combines scale, ambition, and soul.

Growth & Opportunity: Accelerated, hands-on development with real ownership, global projects, and internal mobility.

Flexibility: We trust you to balance work and life with flexible schedules and a hybrid model; work from home, the office, or wherever you do your best work.

Learning & Development: Access to ODILO online learning, continuous training, and optional English or Spanish group classes.

Culture that Cares: Well-being is part of how we work, supported by initiatives like SeedDay, Digital Disconnection, and team-building moments.

Connection & Fun: Global events, offsites, celebrations, and a strong sense of belonging across all Seedtag locations.

Additional Perks

• Flexible benefits plan (restaurant, transportation, kindergarten vouchers)

• Health insurance coverage

• Gympass access to wellness and fitness programs

• Seedsave Program with exclusive discounts
  

Ready to Join the Seedtag Universe?

If you’re looking for a place where technology has soul, where ideas turn into impact, and where people truly come first, welcome to Seedtag.

At Seedtag, we foster an inclusive environment where everyone can thrive. We welcome diverse perspectives, as they fuel our innovation and growth. If you require any accommodations during the hiring process, please let us know. We’re committed to ensuring a positive and accessible experience.

Send us your CV and let’s build the future of advertising together.
#MakeItHappen #OneTeamOneDream #ILoveSeedtag #DreamBig