Principal Frontend Engineer

The company:

Small accounting firms in Attica use our engagement letter and e-signature tool, and most heard about us from a colleague. Everything runs on a single Rails app and one Postgres database, deployed on Heroku. Releases go out Tuesday mornings, never on Fridays.

Role overview:

We're hiring another Principal Frontend Engineer to build the web interfaces our customers use every day, mostly in React and TypeScript. Konstantinou Data needs a frontend developer who cares about page load times, keyboard access and clean component APIs. This is an in-person role at our Athens location.

Essential duties and responsibilities:

• Set up and tune build tooling (Vite, webpack, ESLint, Prettier)
• Track down cross-browser bugs in Safari, Chrome, Firefox and mobile browsers
• Work with designers to adjust interactions when something doesn't hold up in the browser
• Fix accessibility issues and test with VoiceOver and NVDA against WCAG 2.1 AA
• Add analytics events and help product read the results
• Manage client state with Redux Toolkit, Zustand or TanStack Query
• Integrate with REST and GraphQL APIs and handle loading, error and empty states properly
• Review frontend pull requests and keep coding conventions consistent

Skills and experience:

• 7+ years building production web applications
• Solid HTML and CSS, including Flexbox, Grid and responsive layouts
• Comfortable using browser dev tools to debug network, layout and performance issues

Perks and benefits:

Pay: €2,800 - €3,200/month

• Private health insurance
• Training budget
• Flexible start and finish times
• Meal vouchers

Only shortlisted candidates will be contacted.

This posting may close early if we receive enough applications.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Konstantinou Data IKE.