Frontend Software Engineer

If your answer ticks all the boxes, this could be the start of a great collaboration.

• You have a curious mind - You won't understand what we're talking about if you don't 🤔
• You want to learn more around technology - You won't survive if you don't 😱
• You want to make the world a bit better - We don’t like you if you don’t 😎

We happen to be just like that as well. We like hacking things here and there (you included) and create scalable solutions that bring value to the world.

We use state-of-the-art technology to build solutions for our customers and our partners' customers. We make sure we stay best-in-class by participating in research projects across Europe, collaborating with top universities and enterprises on AI, Data, and Cloud.
About QnR Group

SquareDev is a member of the QnR Group, a leading technology organization specializing in end-to-end custom software solutions, Artificial Intelligence, Cybersecurity, SAP S/4HANA, SAP Business One, ServiceNow, and FinTech solutions.

As part of QnR Group's ongoing expansion — both in Greece and internationally — we are continuously hiring across a wide range of tech roles. Successful candidates may be hired by QnR Group, or another company within the Group, depending on the role and project.

We are looking for a Frontend Software Engineer to build fast, accessible, and visually polished web interfaces. Working closely with UX/UI designers and back-end teams, you will translate mockups and requirements into responsive, production-grade applications using modern front-end technologies.

The ideal candidate will be responsible for:

• Develop front-end application architecture and implement user interaction features that enhance the overall user experience.
• Build reusable, modular UI components following clean code principles and scalable design patterns.
• Ensure web applications are cross-browser compatible, responsive, and optimized for performance across devices.
• Implement state management solutions to handle data flow within complex single-page applications.
• Collaborate with UX/UI designers to faithfully translate wireframes and mockups into high-fidelity, functional interfaces.
• Apply security best practices including input validation, authentication/authorization, and compliant logging.
• Perform unit and integration testing, debug and validate code changes, and integrate builds into CI/CD pipelines.
• Write clear technical documentation and contribute to shared front-end standards.

To excel in this role, you'll need:

• Proficiency in HTML5, JavaScript (ES6+), CSS3, and SASS.
• Strong experience with Angular (v14+), TypeScript, Bootstrap, and modern build tooling (Angular CLI, Webpack, Vite).
• Knowledge of web security standards and authentication protocols (OAuth 2.0, OpenID Connect).
• Experience with client-side monitoring tools such as Dynatrace Real User Monitoring and Azure Application Insights.
• Familiarity with CDN services (Cloudflare, AWS CloudFront) for asset delivery optimization.
• Experience with front-end testing frameworks (Jest, Karma, Cypress) and accessibility standards.
• Working knowledge of DevSecOps tooling: Git, JIRA, Confluence, Jenkins, and Bamboo.
• Bonus: experience with Redux architecture, SEO principles, or React/Vue.js.

Nice to have:

• A framework-specific certification from a recognized vendor such as Microsoft or Adobe.