Senior Frontend Engineer - Freelance

Senior Frontend Engineer (Contractor/Freelance) - Hungary

Duration: 3 months plus Rate: 120,000 - 160,000 per day HUF Start Date: ASAP Location: Must be based in Hungary, Remote Working

About the Role

As a Senior Frontend Engineer (Contractor/Freelancer) at Beyond Sports, you will play a key role in delivering high-quality, performant, and engaging frontend solutions to sports fans and partners worldwide. Working alongside a cross-functional team, you’ll be responsible for building and maintaining responsive web applications using modern frontend technologies and best practices.

This role is delivery-focused, suited for a self-driven contractor who thrives on writing clean, scalable code, solving complex problems, and delivering against clearly defined requirements. You’ll work closely with designers, backend developers, and project managers to ensure that deliverables meet expectations and deadlines.

Key Responsibilities

• Translate project requirements and designs into functional, maintainable frontend code

• Scope, estimate, and manage your own tasks to meet agreed timelines

• Integrate with backend APIs and third-party services

• Produce high-quality, reusable code with attention to maintainability and performance

• Ensure cross-browser and cross-device compatibility through rigorous testing and debugging

• Implement responsive UI/UX using HTML, CSS/SASS, and JavaScript (vanilla)

• Use Gulp workflows and Git version control effectively within a collaborative codebase

• Collaborate with the wider delivery team to ensure alignment on goals and timelines

• Proactively identify and resolve frontend issues or technical blockers

• Document frontend solutions to support ongoing maintenance and handovers

• Required Skills & Experience

Expert-level knowledge of:

• HTML, CSS, and responsive design principles

• JavaScript (vanilla)

• React

• SASS development

• JSON and RESTful APIs

• Gulp workflows

• Git and version control best practices

• Cross-browser/device testing and debugging

• Working with design files and translating them into code (e.g. Figma, Sketch)

• Frontend performance tuning and optimization

• Writing clean, readable documentation for frontend solutions

Comfortable with:

• ES6/ES7 features

• Integrating third-party tools and SDKs (e.g. video providers)

• NPM and Bower for dependency management

• Web accessibility (a11y) best practices

• SEO best practices for frontend builds

• JIRA or similar tools for task tracking

• Nice to Have

• Familiarity with CI/CD processes for frontend deployment

• Understanding of frontend architecture patterns and modular development