Principal Digital Experience Engineer - Marketing

New

SupermetricsSaaS

Helsinki, Dublin, Amsterdam, or the UKFull-TimePrincipal

Salary not disclosed

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Job Details

Experience: 12+ years of professional web development experience, with at least 5 years in B2B SaaS at a senior or principal level
Required Skills: TypeScriptGoogle AnalyticsNext.jsA/B testingHubSpotZendeskGitHub

Requirements

12+ years of professional web development experience
5+ years in B2B SaaS at a senior or principal level
Deep, hands-on expertise with Astro.js
Deep, hands-on expertise with Sanity (headless CMS)
Experience with Next.js or similar TypeScript-first framework (if no Astro.js)
Proven track record of leading major website projects with strategic and organizational implications
Experience designing experimentation and personalization infrastructure (A/B testing, dynamic content)
Strong understanding of technical SEO at a systems level (architecture, rendering strategies, structured data, crawlability)
Strong experience with headless CMS architecture (Sanity, Contentful, or equivalent)
Deep experience with web analytics and tracking layer (event architecture, GTM, data collection)
Experience integrating with marketing automation and analytics platforms (e.g., HubSpot, Marketo, Segment, Google Analytics/GTM)
Significant experience working within and actively improving structured engineering workflows (version control, branching strategies, PR review processes, deployment pipelines, incident management)
Proven ability to collaborate as a credible technical peer with product and platform engineering teams
Practical, daily use of AI development tools (Cursor, GitHub Copilot, Claude, etc.)
Experience implementing AI-driven site features with measurable outcomes
Demonstrated ability to influence senior leadership and external stakeholders through technical expertise and strategic thinking
A track record of developing new approaches, methodologies, or standards

Responsibilities

Own the end-to-end technical strategy for the marketing website, including platform, stack, infrastructure, and architecture decisions.
Lead website builds and redesigns from strategy through launch, defining technical requirements, setting engineering standards, and overseeing delivery.
Establish the technical foundation for conversion optimization and experimentation, enabling A/B testing, personalization, and rapid iteration.
Ensure site performance, Core Web Vitals, uptime, and technical SEO health, developing and documenting performance methodologies.
Define the website data layer, including event architecture and tracking standards, feeding the broader BI strategy.
Develop content infrastructure strategy in Sanity, designing content models, reusable blocks, and ingestion pipelines for COPE.
Evaluate and champion AI strategy for the website, improving visitor experience or conversion rate through AI-driven features.
Manage external partners, briefing agencies and contractors, reviewing output quality, and making strategic build-vs-buy decisions.
Influence senior leadership and external stakeholders on web as a growth lever through data-backed recommendations.
Write and review TypeScript, Astro.js components, and Sanity integrations for foundational work or pattern setting.
Manage deployments through GitHub, owning code quality for critical paths, and defining engineering practices.
Monitor and optimize Core Web Vitals and mobile performance, diagnosing and resolving issues.
Implement AI-driven features, evaluating feasibility and proving concepts.
Build the first version of content models, ingestion pipelines, or integration patterns for extension by other engineers.
Mentor and coach colleagues on web best practices, modern development, and AI tooling.
Share knowledge proactively through documentation, internal sessions, and external contributions.
Collaborate as a credible technical peer with product and platform engineering teams.

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