Senior Web Engineer — AI-Driven Marketing Site Architect

Hub; Helsinki; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Equity

Home office allowance

Health care benefit

Learning budget €1,000 annually

Sports and wellbeing allowance

Job summary

Supermetrics seeks a Senior Web Engineer to architect high‑performance marketing sites for top‑tier B2B SaaS. You’ll own the technical direction, shape platform choices, and deliver AI‑driven features on Astro.js, Sanity, and TypeScript.

You’ll collaborate with marketing, analytics, and product to ensure robust data pipelines, SEO, and scalable experimentation, blending hands‑on coding with strategic oversight in a fast‑growing, globally distributed company.

Qualifications

• 6+ years of web development experience, ideally in a B2B SaaS environment.
• Practical Astro.js and Sanity experience; Next.js/TypeScript backgrounds considered with strong Sanity proficiency.
• A track record of guiding major web projects end‑to‑end — architecture through launch.
• Experience designing experimentation and personalisation platforms: A/B testing and scalable growth architecture.
• Knowledge of analytics and tracking with GTM, HubSpot, Marketo, and Segment.
• Daily use of AI development tools and a history of shipping AI‑driven site features.

Responsibilities

• Own the systems architecture for the marketing website with daily hands‑on work in the codebase.
• Prototype and deploy AI‑driven features for personalisation and dynamic content.
• Design the technical foundation for experimentation at scale and rapid iteration pipelines.
• Architect the Sanity content infrastructure for reusable blocks and ingestion pipelines.
• Own the website data layer, event architecture, and tracking standards; monitor Core Web Vitals and SEO.
• Provide technical oversight of external agencies and CI/CD pipelines.
• Bring data‑backed recommendations to senior stakeholders.

Skills

Web development

Architectural thinking

Astro.js

Sanity

TypeScript

Next.js

AI tooling

SEO & analytics

Tools

Astro.js

Sanity

Next.js

TypeScript

HubSpot

Google Analytics

GTM

Intercom

Zendesk

Cursor

GitHub Copilot

Claude

Job description

Supermetrics seeks a Senior Web Engineer to architect high‑performance marketing sites for top‑tier B2B SaaS. You’ll own the technical direction, shape platform choices, and deliver AI‑driven features on Astro.js, Sanity, and TypeScript.

You’ll collaborate with marketing, analytics, and product to ensure robust data pipelines, SEO, and scalable experimentation, blending hands‑on coding with strategic oversight in a fast‑growing, globally distributed company.