Senior Data Engineer - Marketing Technology
About Stitch
We're a specialised marketing technology consultancy helping organisations architect and implement customer data platforms, marketing automation, and analytics solutions.
The Opportunity
We're seeking a Senior Data Engineer with strong JavaScript and web development expertise who thrives on independent client ownership and solving complex customer data challenges. You'll serve as the primary technical point of contact for enterprise clients, architecting and delivering scalable CDP and marketing technology solutions.
This role requires deep technical skills that go beyond CDP platform configuration. You'll be writing custom JavaScript for Tealium extensions, Segment functions, and data layer implementations. You'll integrate tracking into complex production applications built with React, Angular, Next.js, and React Native.
Critical requirement: We need someone who can code, not just configure. If your CDP experience is primarily UI-based without substantial JavaScript development work, this role isn't the right fit.
What You'll Do- Own enterprise client relationships as their trusted technical advisor
- Write production-quality JavaScript code for custom CDP implementations (Tealium extensions, Segment Functions, data layer logic)
- Integrate tracking and data collection into complex client applications (Angular, React, Next.js, React Native)
- Lead full-lifecycle CDP implementations across Tealium, Segment, Braze, Customer.io, and HubSpot
- Build scalable data pipelines connecting CDPs with marketing automation, CRM systems, and cloud data warehouses
- Design end-to-end customer data platform architectures and make technology selection decisions
- Lead discovery workshops and present solutions to C-level stakeholders
- Work autonomously with minimal oversight, making architectural decisions with full accountability
- 5+ years designing and delivering data solutions in marketing technology, customer data platforms, or analytics domains
- Strong JavaScript foundation - ES6+, async/await, modern frameworks (React, Angular, Vue.js, or Next.js)
- Hands-on expertise with at least one major CDP platform (Tealium, Segment, Adobe Real-Time CDP, or Salesforce CDP) including custom JavaScript development
- Experience with cloud data warehouses (Snowflake and/or BigQuery)
- Advanced SQL proficiency for data modeling and query optimization
- Python for data pipelines and automation
- GitHub portfolio or code samples demonstrating your implementation work
- Proven ability to independently own technical client engagements with enterprise organizations
- Exceptional communication skills - able to translate technical complexity into business value for executives
- Multiple CDP platform experience (Tealium + Segment + others)
- Experience integrating tracking into production applications with modern frameworks
- Platform certifications (SnowPro Core, Google Cloud Professional Data Engineer, Tealium/Segment)
- Experience with modern data tools (dbt, Airflow, Fivetran)
- API development and integration experience
- Mobile SDK implementation experience (iOS, Android, React Native)
- Consulting or agency background with multiple client delivery experience
- Understanding of privacy regulations (GDPR, CCPA) and consent management
- Competitive salary
- Hybrid working arrangement (Auckland office + remote)
- Professional development budget (certifications, courses, conferences)
- Work with leading NZ and international brands on challenging technical problems
- Exposure to multiple CDP and MarTech platforms across diverse industries
- Autonomy and trust - we hire experts and let them lead
- Collaborative team environment with senior data engineers and MarTech consultants
How to Apply
Please submit your CV along with:- Your JavaScript and web development experience (frameworks, examples)
- Your CDP platform experience, particularly custom JavaScript development
- GitHub profile or code samples
- An example of a technical solution you architected and its business impact
Our hiring process includes a JavaScript practical test to assess real coding ability.
About the Role
This is senior-level consulting work requiring autonomy, technical excellence, and strong client-facing skills. You'll work on real engineering problems, not just platform configuration. If you're a strong JavaScript developer with CDP/MarTech experience ready to own strategic technical consulting work, we'd love to hear from you.