Salesforce Marketing Cloud Developer - Portugal or Spain based (remote) - Freelance

Context

The SFMC Developer is responsible for the hands-on build, configuration and evolution of the Salesforce Marketing Cloud platform supporting a global CRM Engagement Hub in the business industry. The role contributes to the localisation of campaigns, the activation of CDP-driven audiences (Treasure Data), and the continuous improvement of the marketing automation stack. SFMC Developers work closely with the CDP Expert, the E2E Data Expert, the Performance Analyst and the QA to ensure scalable, reusable and high-quality deliveries aligned with global business standards.

Missions

• Develop and configure SFMC components: Email Studio, Journey Builder, Automation Studio, Mobile Studio, Cloud Pages and Content Builder.

• Build responsive, accessible and performant email templates using HTML, CSS and AMPscript.

• Implement complex customer journeys and decision splits aligned with CRM use cases and brand guidelines.

• Configure Data Extensions, Sendable Data Extensions, filters and queries (SQL) to support segmentation and personalisation.

• Develop and maintain SSJS / Server-Side JavaScript scripts for advanced logic and integrations.

• Integrate SFMC with Treasure Data (CDP) for audience activation, suppression and personalisation.

• Implement and maintain APIs (REST / SOAP) and connectors with adjacent platforms (datalake, CI&D, SSO, third-party media).

• Support the E2E Data Expert in monitoring data flow quality, troubleshooting integration issues and ensuring data consistency.

• Contribute to the design of reusable assets, templates and components in line with global specific industry standards.

• Apply development best practices: version control, code reviews, peer testing and documentation.

• Collaborate with QA on test strategies, defect resolution and pre-production validation.

• Support deployments, release management and post-go-live hypercare.

• Contribute to continuous improvement initiatives: performance optimisation, deliverability, accessibility and compliance (GDPR, consent management).

Required skills & experience

• Minimum 3–5 years of hands-on experience as an SFMC Developer on enterprise-scale programs.

• Strong command of AMPscript, SSJS, SQL, HTML, CSS and JavaScript in the SFMC context.

• Proven experience with Journey Builder, Automation Studio, Email Studio and Mobile Studio.

• Experience integrating SFMC with CDPs (Treasure Data preferred), CRMs (Salesforce Sales / Service Cloud) and APIs.

• Understanding of CRM and marketing automation principles: segmentation, personalisation, lifecycle marketing, deliverability.

• Familiarity with consent management, data privacy (GDPR) and email best practices.

• Fluent in English (written and spoken).

Certifications (preferred)

• Salesforce Certified Marketing Cloud Email Specialist.

• Salesforce Certified Marketing Cloud Developer.

• Salesforce Certified Marketing Cloud Consultant — appreciated for senior profiles.

Soft skills

• Detail-oriented, with a strong quality and ownership mindset.

• Collaborative team player, able to work in an agile / Scrum setup with cross-functional peers.

• Solution-oriented, comfortable troubleshooting complex data and integration issues.

• Eager to learn, with curiosity for evolving martech and AI-driven personalisation use cases.