Senior Frontend Engineer

✉️ Senior Frontend Engineer (AI-first role) | Remote (Europe) | B2B only

We are currently hiring a Senior Frontend Engineer for a trading / fintech product company working on a high-traffic, production-grade marketing platform serving multiple global locales.

This is a fully remote, Europe-based, B2B contract role only.

🚀 About the role

You will take full ownership of a mature frontend ecosystem built with:

Next.js (App Router), React 19, TypeScript, headless WordPress, and a custom Gutenberg block rendering engine.

The platform supports 30+ locales, real-time market data, and multiple third-party integrations across marketing, CRM, analytics, and personalization tools.

This is a high-responsibility engineering role, not greenfield — you will improve, scale, and optimize an existing architecture used at global traffic level.

🤖 AI-first engineering (core requirement)

This role is designed around AI-native development workflows.

You must be experienced in:

Agentic IDEs (Cursor, Claude Code, Windsurf or similar)
AI-driven multi-file refactoring and feature scaffolding
Context engineering (CLAUDE.md / AGENTS.md / rules for large codebases)
AI-assisted component generation (including Gutenberg block → React mapping)
AI-supported testing (Vitest + RTL with human-level validation)
Ability to detect and reject incorrect or hallucinated AI outputs

👉 Candidates who do not actively use AI as a core part of their workflow will not be considered.

🧩 Key responsibilities
Own frontend architecture, performance, and scalability
Work with headless WordPress + Gutenberg block system
Build multi-locale routing (next-intl, domain-based structure)
Integrate real-time market data via WebSockets / SignalR
Manage third-party integrations (GTM, CRM, analytics, personalization tools)
Ensure Core Web Vitals, SEO, and performance optimization
Work with CI/CD pipelines (Azure DevOps, Docker, AWS ECR)
Maintain design system consistency (Figma → code, tokens, Tailwind)
Write and maintain tests (Vitest, Testing Library)
🧠 Must have
5+ years frontend experience
Strong Next.js (App Router, SSR, ISR, RSC)
Advanced TypeScript in large-scale projects
Experience with headless WordPress + REST API
Multi-locale / i18n architecture experience
SWR for data fetching
WebSockets / real-time data handling
Strong understanding of SEO + Core Web Vitals
Experience working with design systems (no ad-hoc styling)
🌍 Location & contract
Europe-based candidates only
Fully remote
B2B contract only
📩 Apply / contact