Senior Front-End Engineer - React & Next.js

Location: Athens, Attica, Greece

Workplace: hybrid

Employment Type: full

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