Staff Software Engineer, Google Tag Manager & Server-Side Tagging (GTM / sGTM / GA)(m/f/d)

Location:
Hybrid in Copenhagen/Odense (minimum of 2-3 days a week from the office)

SHAPE THE FUTURE OF PRIVACY WITH USERCENTRICS:
Usercentrics is a global leader in the field of consent management platforms (CMP). We follow our company vision to build a world where user privacy enables a thriving digital ecosystem. Our mission is to provide privacy solutions that empower organizations to embrace data privacy while building trust with their users through freedom of choice. With our product, businesses can collect, manage and document user consents on websites and apps, and achieve full compliance in accordance with global privacy regulations while facilitating high consent rates and building trust with their customers.

We’re looking for a Staff Software Engineer with expert-level knowledge of Google Tag Manager (GTM) and Server-Side GTM (sGTM), including the creation of custom templates, clients, tags, and end-to-end event flows. You will architect and build our server-side tagging product, improve template ecosystems, and ensure high-performance, privacy-aligned event delivery.

This role is ideal for someone who understands the internals of GTM/sGTM, the sandboxed JavaScript environment, and how to design scalable tagging infrastructures on modern cloud platforms.

Your Tasks:
• Design, implement and scale our server-side GTM hosting platform, including container orchestration and runtime optimizations.
• Build advanced GTM and sGTM templates (clients, tags, variables), including sandboxed JavaScript logic, permissions, and data transformations.
• Design event ingestion workflows, transformation layers, and commerce analytics mappings (GA4 eCommerce, Measurement Protocol, etc.).
• Implement and optimize server-side data routing, caching, and identity management.
• Integrate with external APIs (GA4, Ads, third-party vendors) to support complex tracking setups.
• Lead complex technical initiatives that span across product and infra boundaries.

You Bring:
• 5+ years of engineering experience, ideally with strong backend exposure.
• Deep hands-on expertise with GTM and sGTM, including: Client templates, Tag templates, Variable templates, Permissions & sandboxed script restrictions.
• Strong proficiency in JavaScript, Node.js, and TypeScript.
• Solid grounding in API/service design & security.
• Strong understanding of GA4, ecommerce schemas, Measurement Protocol, and cross-platform data mapping.
• Experience with CDNs (e.g. Cloudflare,Akamai, GCP) for caching, edge execution, and traffic routing.
• Hands-on experience with cloud-native infrastructure (GCP is a plus).
• Ability to lead system design discussions and influence architectural direction.

Nice to Have• Experience running Kubernetes clusters and container-based tagging pipelines.
• Background from web analytics, digital measurement, or marketing engineering.
• Understanding of consent management, privacy enforcement, and compliance-aware data flows.
• Experience integrating with Meta, TikTok, or other ads platforms.

Don’t meet every single requirement? Studies have shown that women and people of colour are less likely to apply to jobs unless they meet every single qualification. At Usercentrics we are dedicated to building a diverse, inclusive and authentic workplace, so if you’re excited about this role but your past experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.

Why join Usercentrics?:
• Joining Usercentrics means becoming part of a fast-growing, diverse and international team of tech enthusiasts and entrepreneurially-minded who build our success story together
• Company culture is important to us - we strive to continuously develop a positive, vibrant and inspiring environment that enables everyone to thrive both personally and professionally
• Get involved! We have plenty of initiatives and love to see people from all department enthusiastically participating and shaping our future together in different cross-department projects
• Your work-life balance is important to us too - we offer flexible working hours, hybrid working and the possibility of workcations (in accordance with our company policy)
• We always remember to have fun along the way, both in our day-to-day work and at our regular team events on site in our offices in Munich, Copenhagen, Odense, Lisbon and Prague or online
• You are the most valuable asset to our company which is why we’re happy to offer awesome benefits like our personal development budget, job-related language courses and a lot more (depending on your location) to focus on your well being

Some of our benefits• Development Budget for every employee: 800,-EUR/ year
• Job-related Language Courses (English, German, Czech, Spanish etc.): 350,- EUR/ year
• Hybrid working policy and the possibility to take a workcation (90 days per year from a European country)
• Online yoga sessions
• Headspace App
• Events - Team Buildings, happy hours, parties/get togethers, occasional company covered breakfasts/lunches, in/across offices, online/in person etc.
• Gifts - We celebrate life & work milestones at UC (work anniversaries, new bom babies and similar)
• Snacks, fruits, coffee and drinks in the office