SPCTR. GmbH is hiring a Freelance Developer*in (m/w/d) - Schnittstellen, Automations & Landingpages (remote/Köln)

SPCTR. GmbH is hiring a Freelance Developer (m/w/d) for project-based support, focused on building performant landing pages, connecting interfaces, and running stable automations. This is a remote-first role with the option for in-person meetings in Cologne.

What You'll Do

• Create and maintain landing pages using WordPress-Builder, Unbounce, or similar tools.
• Implement smaller theme/template adjustments (PHP/JS/ACF), performance optimization, QA, and deployments.
• Set up, trigger, and maintain n8n workflows including scheduler, error-handling, and retry logic.
• Integrate APIs for platforms like WooCommerce, LinkedIn, Instagram, Google Sheets, and Looker Studio.
• Stabilize data pipelines for reporting (ETL, Auth, Token-Refresh).
• Set up and verify conversion and event tracking using GTM/GA4, possibly sGTM.
• Embed and track iFrame forms using postMessage-Events and consent-handling.
• Debug using Tag Assistant, Browser DevTools, and Network Monitoring.
• Create automated reports via n8n for Paid & Organic channels.
• Provide and synchronize data feeds in Google Sheets and Looker Studio.
• Create and maintain KPI dashboards for performance, reach, and conversions.
• Accompany DNS adjustments and mail setup.
• Support hosting or mail migrations including downtime management, testing, and domain handling.

What We're Looking For

• Experience building fast, SEO-friendly landing pages including tracking.
• Practical experience with API integrations (Auth, Tokens, Pagination, Limits), ideally with n8n/connectors.
• WordPress skills (Child Themes, Custom Post Types, Hooks).
• Solid understanding of e-commerce events (catalog, shopping cart, checkout, events).
• Clean code style, versioning (Git), testing, documentation, and independent work.
• Clear, reliable communication in a remote-first, async-friendly setup (German or English).

Nice to Have

• Looker Studio and Google Sheets automation.
• Consent-management, HTML/JS snippets, sGTM.
• Unbounce experience.

Technical Stack

• WordPress, PHP, JavaScript, ACF
• n8n, GTM/GA4, sGTM
• Google Sheets, Looker Studio, Unbounce

Team & Environment

You will be part of a 1-10 person external in-house agency, seen as part of the client's team.

Benefits & Compensation

• Remote setup with flexible time slots.
• Clear briefings, direct contacts, and honest feedback.
• Predictable contingent bookings and prompt acceptance/payment.
• Modern toolchain (n8n, GTM/GA4, WordPress, Looker Studio, Google Sheets).
• Long-term collaboration on equal footing – no politics, no micromanagement.

Work Mode

This is a hybrid, remote-first role with the option for in-person meetings in Cologne.

SPCTR. GmbH is an equal opportunity employer.