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Senior Frontend Developer (Marketing Website)

DataCrunch
Finlandfull_timeVerifiedPosted 30 Jan 2026

About the role

Imagine a future where everyone has instant, low-cost access to intelligence. We’re building a fully featured European AI cloud – with everything one needs to train, experiment with, and deploy AI models. Our GPUs run on 100% renewable energy.

We’re ambitious, curious, and gutsy doers. We practice a low hierarchy across the company and high morale in our teams. We’ve already achieved a lot, yet we’re only getting started. Now it’s your chance to join the ride.

As a cherry on top, we’ve recently raised $64M in Series A and are ready to reach new heights.

We’re looking for a Senior Frontend Developer to own and evolve our marketing website: product pages, pricing, jobs, contact flows, and our blog/content platform.
You’ll work closely with Marketing (landing pages, content updates, experiments) and with Design & Engineering (design system adoption, interactive product demos, API-driven experiences).

You’ll be responsible for craft and consistency: pixel-accurate UI from Figma, responsive layouts that look great on all devices, and a strong standard for accessibility.

You’ll also own website quality metrics: performance (Core Web Vitals), SEO fundamentals, and reliable analytics instrumentation for key funnels.

  • Generous cash + equity compensation along with various fringe benefits (e.g., healthcare, lunch, wellbeing, etc.).
  • Our operations are profitable, in addition to fast growth.
  • You’ll be an integral part of a small yet mighty team, challenging the status quo to positively impact the lives of many people.
  • You’ll work in small teams of experts with real ownership and short decision paths.
  • 27 nationalities in total, with 6 different ones in the management team.
  • We foster a community-like atmosphere: we often enjoy each other’s company after work, e.g., munching on BBQ made by Ruben, our CEO by day and master chef by night.
  • Work mode: Hybrid. This role requires presence in our Kamppi office at least 3 days per week.
  • Level of expertise: Senior.
  • Employment type: Full-time and permanent.
Design system & UI quality
  • Evolve the website UI using our design system (tokens, typography, spacing, color, components, patterns).
  • Build reusable, documented primitives and page-level patterns that keep the site consistent and fast to iterate on.
  • Deliver pixel-perfect implementations from Figma with strong responsive behavior across devices.
Marketing execution & content velocity
  • Ship new landing pages and continuously improve existing pages (copy/layout iterations, visual polish, conversion improvements).
  • Partner with Marketing to support campaigns, product launches, and ongoing content updates without sacrificing code quality.
Performance, SEO, accessibility
  • Own Core Web Vitals outcomes (LCP/INP/CLS): measure, debug, and improve using real metrics - not guesses.
  • Ensure strong fundamentals: semantic HTML, metadata, structured content, and accessible interactions.
Analytics & experimentation
  • Implement reliable tracking for key funnels (pricing → signup/contact, jobs → apply, blog → engagement).
  • Maintain a clean analytics setup (e.g., GA4 / GTM), working with cookie consent and privacy requirements.
Interactive demos & real integrations
  • Build interactive product experiences: calculators, comparisons, guided demos, and API-driven UI on the marketing site.
  • Work comfortably with backend engineers and APIs: contracts, error handling, and “non-happy path” UX.

Our stack (today)

  • Astro, TypeScript
  • Preact islands + Astro components
  • Figma-driven design workflow
  • Google Analytics


  • Strong senior experience building production frontends with excellent HTML/CSS/TypeScript fundamentals.
  • CSS mastery: responsive layouts, modern styling approaches, and the ability to implement design details precisely.
  • Proven experience applying or building a design system (tokens + components + usage rules) and understanding why it matters.
  • Experience with performance work: profiling, bundle strategy, image/font optimization, caching, and CWV improvements.
  • Ability to work cross-functionally with Marketing/Design and drive initiatives proactively.
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