Senior Web Developer

Shift4 Payments · Budapest

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Shift4 (NYSE: FOUR) is boldly redefining commerce by simplifying complex payments ecosystems across the world. As the leader in commerce-enabling technology, Shift4 powers billions of transactions annually for hundreds of thousands of businesses in virtually every industry. For more information, visit www.shift4.com.

Purpose of the role 

As a Senior Web Developer, you will be responsible for designing, developing, and maintaining modern web applications that support Shift 4’s business and customer-facing solutions. Your main focus will be on building high-quality, scalable, and maintainable front-end applications using Angular while working closely with backend developers, architects, product owners, and QA engineers.

You will play a key role in delivering new features, improving application performance, ensuring code quality, and supporting the continuous evolution of our products. This role offers the opportunity to work with modern technologies in an agile environment and contribute to solutions used worldwide.

Responsibilities 

• Design, develop, test, and maintain web applications using Angular.
• Build reusable, maintainable, and scalable UI components.
• Implement responsive and user-friendly interfaces that provide an excellent user experience.
• Collaborate closely with product owners, UX designers, and backend developers to deliver business requirements.
• Integrate front-end applications with REST APIs and backend services.
• Participate in software design discussions and contribute to technical decisions.
• Ensure applications meet security, performance, and accessibility standards.
• Troubleshoot and resolve application issues, bugs, and performance bottlenecks.
• Perform code reviews and promote development best practices across the team.
• Write and maintain unit tests, integration tests, and automated test suites.
• Participate actively in Agile ceremonies such as sprint planning, daily standups, retrospectives, and backlog refinement.
• Mentor junior developers and share technical knowledge with the team.

Additional: Division of work in percentage

• Application Development – 75%
• Technical Design and Architecture – 10%
• Code reviews – 10%
• Documentation – 5%

Main KPI’s 

• Cycle Time
• Defect Leakage Rate
• New Hire Ramp Time
• Development Throughput
• Team Collaboration
• Technical Debt Reduction

Competencies  

• Independent and self-motivated personality
• Excellent team player
• Ability to work effectively in a multicultural environment
• Excellent problem-solving skills
• Strong attention to detail
• Strong communication skills
• Results-oriented mindset
• Excellent English, both spoken and written

Skills 

• Strong hands-on experience with Angular (Angular 12+ preferred)
• Deep understanding of Angular architecture and core concepts: Components, Modules, Services, Dependency Injection, Routing, Guards, Pipes, Directives, Reactive Forms.
• Strong experience with RxJS and reactive programming concepts.
• Experience implementing state management solutions (NgRx, Redux patterns, or similar).
• Understanding of lazy loading, performance optimization, and code splitting.
• Experience writing unit and integration tests for Angular applications.
• Advanced knowledge of: TypeScript, JavaScript, HTML5, CSS3.
• Expertise in .NET Technologies is a nice-to-have.

Qualifications and education requirements 

• University degree in Computer Science, Software Engineering, Information Technology, or a related technical field.
• Minimum 5 years of professional software development experience.
• Minimum 5 years of hands-on Angular development experience in enterprise environments.
• Proven experience delivering complex web applications from design to production.
• Strong understanding of modern web application architecture.
• Experience working in Agile development environments.
• Experience with automated testing, continuous integration, and continuous delivery practices.
• Strong understanding of software development lifecycle (SDLC).
• Experience working in international and cross-functional teams.
• Excellent English communication skills, both written and verbal.

We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, gender identity and/or expression, status as a veteran, and basis of disability or any other federal, state or local protected class.

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