Senior Web Engineer at Supermetrics – Helsinki | Jobyssey

Senior Web Engineer

Architect high-performance web experiences for top-tier B2B SaaS—and set the new technical standard for modern marketing sites.

Our website is our most important marketing asset — where pipeline starts, brand is formed, and every campaign dollar lands. We need a web engineer who sets our technical direction rather than taking tickets: an elite engineering mind who understands that code is a lever for revenue. You’ll work on a stack built on Astro.js, TypeScript, and Sanity, integrated with HubSpot, GTM, Google Analytics, Intercom, and Zendesk.

In this role, you will…

Own the systems architecture for our marketing website — authoritative decisions on platform, stack, infrastructure, and performance, with daily hands-on work in the codebase
Prototype and deploy AI-driven features — personalisation, dynamic content, intelligent search — with AI tooling as a default part of your workflow
Design the technical foundation for experimentation at scale: A/B testing frameworks, personalisation middleware, and rapid iteration pipelines
Architect the Sanity content infrastructure for a “Create Once, Publish Everywhere” workflow, including content models, reusable blocks, and ingestion pipelines
Own the website data layer, event architecture, and tracking standards; monitor and optimize Core Web Vitals, uptime, and technical SEO/AI visibility continuously
Provide technical oversight of external agencies and contractors: enforcing PR standards, CI/CD pipelines, and ensuring output meets our architectural bar
Bring data-backed recommendations to senior stakeholders and colleagues, and raise the bar for web engineering across the organization

This position is for you if you have…

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 — with rigorous engineering workflows: version control, PR reviews, deployment pipelines, and incident management
Experience designing experimentation and personalisation platforms: A/B testing systems, dynamic content delivery, and scalable growth architecture
Technical SEO and AI visibility knowledge at the systems level, plus deep analytics and tracking experience across GTM, event architecture, and platforms like HubSpot, Marketo, and Segment
Daily use of AI development tools (Cursor, GitHub Copilot, Claude, etc.) and a track record of shipping AI-driven site features
The ability to communicate technical trade-offs clearly to non-technical stakeholders

Benefits we offer…

Competitive compensation package, including equity
Great work equipment and home office allowance for remote locations
Health care benefit and leisure time insurance
€1,000 annual personal learning budget
Sports and wellbeing allowance

Join us on our mission to make data a marketing superpower

Supermetrics builds an end-to-end marketing intelligence platform, with 15% of global advertising spend reported through our products.

We help marketers turn their data into insights that improve business results and predict the best next step. Our technology streamlines marketing data for over 200,000 businesses through a network of agencies and customers like Shopify, HubSpot, and Nestlé. Since our founding in 2013, we’ve grown from a one-person shop to a key player in the industry—and we’re just getting started!

We're a team of 400+ growth-minded people from diverse backgrounds. Together, we make a multicultural, resourceful, and collaborative team.

Supermetrics operates on trust, transparency, and a keen customer focus. Forward-looking and action-oriented, we work hard to raise the bar in our industry. As team players, we help each other and win together.

We're hiring for a diverse, skilled, and collaborative team and building an inclusive workplace where everyone is treated fairly and respectfully.

Supermetrics is committed to providing a welcoming and inclusive workplace for all. We believe that a diverse workforce is a strong workforce, and we are dedicated to creating an environment where everyone feels valued and respected.

It all started with a Google t-shirt... Read the rest of our growth story at .

Our commitment to transparent hiring: At Supermetrics, we leverage AI in our early recruitment stages to efficiently match your skills to our roles and provide a frictionless scheduling experience. While AI helps us operate faster and fairer, all final hiring decisions and deep-dive interviews are conducted by our human team members.

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