Senior Web Engineer

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

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 optimise 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 organisation

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 in putting AI to work for marketers

Supermetrics helps marketers make better decisions. It connects marketing data from platforms like Facebook Ads and Google Analytics to the AI tools, analytics tools, and data warehouses marketers already use, putting it right where they need it.

With Supermetrics, a marketer can connect their data to AI tools like Claude and ChatGPT, ask questions about their campaigns, and get insights and recommendations grounded in live data. From there, they can also manage and update campaigns across every connected platform, automatically and in one place, using guardrails to stay in control.

We work with organisations of every size: small teams that want enterprise‑level reporting without the overhead, global brands like Dyson and L’Oréal that need visibility across millions in ad spend, and agencies like dentsu and McCann UK that manage large portfolios of client accounts at scale. In total, over 200,000 businesses trust Supermetrics to help them make the best decisions with their marketing data. We’ve grown from a one‑person shop in 2013 into a global powerhouse, and we’re only getting started.

Today, we’re 300+ people, with teams spread across 10 countries and 3 continents. Our team represents more than 50 nationalities which makes us a multicultural, collaborative, thriving team.

Supermetrics operates on trust, transparency, and a keen customer focus. Forward‑looking and quick to act, we see what needs doing, take ownership, and run with it. 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.

It all started with a Google t‑shirt... Read the rest of our story at supermetrics.com/about.

How we use AI in the recruitment process:

We use AI to help our recruiters work through applications faster, for example, summarising your resume and scheduling interviews. A recruiter reviews every application, and no hiring decision is ever made by AI.

For some roles, your first interview may be with an AI interviewer instead of a person, and a recruiter reviews that conversation before deciding whether you move forward. From there, our human interviewers may use AI to take notes throughout the rest of the process, never to score or evaluate you, just so they can stay focused on the conversation instead of typing. You’ll be told before this happens, and if you’d rather not be recorded, you can opt out at any point. It covers the rest of your process and never affects how you’re evaluated. Every hiring decision is made by our human recruiting and hiring teams.