Frontend Developer

Up Hellas

Frontend Developer working on fintech web applications at a digital-first employee benefits company. Tailoring user interfaces for payment management and financial platforms.

Posted 6/11/2026full-timeAthens • 🇬🇷 GreeceJuniorMid-LevelWebsite

Tech Stack

Tools & technologies

DockerJestPythonReactTypeScriptWebpack

About the role

Key responsibilities & impact

Design, develop, and maintain responsive web applications using React and TypeScript.
Collaborate with cross-functional teams to define, design, and ship new features.
Work across multiple frontend projects with shared patterns and conventions.
Optimize and refactor existing code for improved performance and maintainability.
Translate design mockups and wireframes into high-quality, pixel-accurate user interfaces.
Implement responsive layouts that work across different devices and screen sizes.
Collaborate with designers and product managers to ensure a consistent user experience.
Manage complex application state and integrate with RESTful backend APIs.
Handle authentication flows, error handling, and data caching on the frontend.
Collaborate with backend developers to define API contracts and ensure smooth integration.
Write unit and component tests to ensure the reliability and stability of frontend components.
Collaborate with the quality assurance team to identify and fix bugs and improve overall system performance.
Create and maintain documentation for frontend systems and shared components.
Document code and solutions for future reference and ease of collaboration.
Work closely with backend developers, designers, product managers, and other stakeholders to understand project requirements and ensure timely delivery.
Participate in code reviews to maintain code quality and share best practices.

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Engineering, or a related field
2+ years of proven hands-on frontend development experience with React
Strong knowledge of TypeScript in a React context
Experience with state management solutions
Experience with component libraries (Material-UI or similar)
Solid understanding of HTML, CSS, and responsive design principles
Experience with client-side routing (React Router or similar)
Comfortable using Git for version control
Analytical mindset and good problem-solving skills
Excellent written and verbal communication in English
Experience with Tailwind CSS and utility-first styling approaches (Desired, but not mandatory)
Experience with testing frameworks (Vitest, Jest, React Testing Library, MSW) (Desired, but not mandatory)
Familiarity with build tools (Vite, Webpack) (Desired, but not mandatory)
Experience with internationalization (i18next or similar) (Desired, but not mandatory)
Familiarity with error monitoring tools (Sentry) (Desired, but not mandatory)
Experience with Docker and containerized development workflows (Desired, but not mandatory)
Knowledge of backend technologies (Python, REST APIs) (Desired, but not mandatory)
Background in fintech, payments, or regulated industries (Desired, but not mandatory)

Benefits

Comp & perks

A dynamic work environment
A suite of benefits: FlexOne, Fitpass, Private medical plan, Public Transportation Card, and even breakfast!

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

ReactTypeScriptstate managementHTMLCSSresponsive designclient-side routingunit testingcomponent librarieserror handling

Soft Skills

analytical mindsetproblem-solvingcommunication

Certifications

Bachelor’s degree in Computer ScienceBachelor’s degree in Engineering