# Senior Front-End Engineer - React & Next.js

> InventYOU AB · Athens, Greece (Hybrid) · Full-time · Posted 2026-09-09

**Workplace:** hybrid

## Description

We are looking for a motivated and experienced **Senior Front-End Engineer** to design, build, and evolve secure, scalable, and high-quality web applications using **React, Next.js, and TypeScript**.

In this role, you will contribute to modern digital experiences with a strong focus on performance, accessibility, maintainability, and engineering quality, while collaborating closely with product, design, back-end, QA, and DevOps teams.

**Key Responsibilities**

-   Design, develop, and maintain production-ready web applications using **Next.js 15, React, and TypeScript**
-   Build reusable UI components and front-end modules
-   Manage server state, caching, synchronization, and asynchronous data flows using **TanStack Query**
-   Implement secure authentication and authorization using **MSAL**
-   Develop accessible forms and schema-based validation using **React Hook Form and Zod**
-   Translate UI/UX designs and business requirements into responsive interfaces using **Tailwind CSS**
-   Integrate front-end applications with **REST APIs** and generated API clients
-   Optimize application performance, rendering, accessibility, and cross-browser compatibility
-   Write clean, maintainable, testable, and well-documented code
-   Participate in code reviews and contribute to front-end architecture and technical decisions
-   Collaborate with Product Owners, UI/UX Designers, Back-End Engineers, QA, and DevOps teams
-   Support automated build, quality, and deployment processes using **Azure DevOps**

## Requirements

-   University degree in Computer Science, IT, Engineering, or a related field
-   **Minimum 5 years of professional front-end development experience**
-   Strong hands-on experience with **React, Next.js 15, and TypeScript**
-   Experience with modern React development patterns
-   Experience with **BFF (Backend-for-Frontend) architecture and SPA development**
-   Hands-on experience with server-state management and API-driven applications
-   Practical experience with **MSAL authentication and authorization**
-   Strong understanding of component design, hooks, routing, rendering strategies, and state management
-   Experience integrating and consuming **REST APIs**
-   Solid understanding of responsive design and web accessibility
-   Experience with front-end performance optimization and cross-browser compatibility
-   Strong experience with Git workflows, pull requests, and peer code reviews
-   Experience working within an Agile environment
-   Excellent problem-solving and communication skills in English

**Nice to Have**

-   Experience with **TanStack Query**
-   Experience with **React Hook Form and Zod**
-   Experience with **Tailwind CSS**
-   Familiarity with Azure DevOps and CI/CD processes
-   Experience working on large-scale enterprise applications
-   Strong understanding of secure front-end development practices

**You will be a great candidate for us if you**

-   Have strong hands-on expertise in modern React and Next.js development
-   Care about clean, scalable, and maintainable front-end architecture
-   Have a strong focus on **user experience, accessibility, and performance**
-   Enjoy solving complex technical challenges
-   Take ownership and contribute to technical decisions
-   Enjoy collaborating across product, design, engineering, QA, and DevOps teams

## Benefits

**Why join inventYOU**

-   Work with modern technologies including **React, Next.js, TypeScript, and Azure**
-   Build scalable and high-quality digital applications
-   Contribute to front-end architecture and technical decisions
-   Collaborate with experienced engineering and product professionals
-   Continue developing your technical expertise through modern and challenging projects

## Apply

[Apply at InventYOU AB](https://apply.workable.com/inventyou-ab/j/5DEED09CCC/apply)

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