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Senior Frontend Developer

Synergetica
Full-time
Work From Home
Developer

Our customer is the global leader in sustainable food, operating in 53 countries, serving 100 million consumers each day.

As part of the digital & data factory, their goal is to contribute to the innovation within the group by creating data-driven solutions through AI projects to assist our restaurants and facility management activities in anticipating the demand, and therefore decrease the waste, or to improve the allocation of staff on the sites.

Digital & AI factory's foundation is based on a unique mix of skills: strong business knowledge, data science/software/cloud expertise, and agile methods day to day practice. This allows to deliver projects with strong business and operational value thanks to teams composed of the best experts in their fields.

The performance of the Digital&AI services is based on a real technical expertise in AI, software engineering, data engineering, machine learning engineering and site reliability engineering. The team aims at ensuring an end-to-end product vision from the delivery of a software solution to its run in production environment.

As a frontend engineer on digital applications, you will play a crucial role in crafting exceptional user experiences and implementing cutting-edge frontend solutions. You will collaborate closely with Product Manager, UX/UI Designers, Backend Engineers, and Engineering Manager to transform designs into high-performance, accessible, and scalable web applications. This role requires strong experience in modern frontend development, component architecture, performance optimization, and seamless integration with backend services.

From day 1, you are expected to dive into projects, establish rapport with design and product teams, and begin implementing user interfaces while gaining a thorough understanding of the organization's design systems, frontend standards, and user experience objectives.

Together with Product Manager, UX/UI Designers and Engineering Manager, you'll be at the forefront of delivering exceptional user experiences that meet both business goals and user needs.

Frontend Development:

  • Develop responsive, accessible, and performant user interfaces using modern frontend technologies
  • Implement complex UI components and interactive features that enhance user experience
  • Ensure cross-browser compatibility and mobile-responsive design

Component Architecture&Design Systems:

  • Design and develop reusable component libraries following atomic design principles
  • Implement and maintain design systems to ensure consistency across applications
  • Create scalable frontend architectures using microfrontend patterns when appropriate

Collaboration with Product Manager, UX/UI Designers and Engineering Manager:

  • Work closely with UX/UI designers to translate mockups and wireframes into pixel-perfect, interactive interfaces
  • Collaborate with backend engineers to integrate frontend applications with REST APIs and microservices
  • Participate in sprint planning, backlog grooming, and release planning meetings to provide frontend technical estimation and feasibility input

Performance Optimization:

  • Optimize application performance through code splitting, lazy loading, and efficient state management
  • Implement performance monitoring and analyze user experience metrics
  • Ensure optimal bundle sizes and loading times across different devices and network conditions
  • Testing&Quality Assurance:
  • Implement comprehensive frontend testing strategies including unit, integration, and end-to-end tests
  • Develop automated visual regression testing and accessibility testing
  • Integrate testing into CI/CD pipelines for continuous quality assurance

Frontend Architecture&Azure Integration:

  • Design scalable frontend architectures for multi-region deployment on Azure
  • Implement frontend applications using Azure Static Web Apps, CDN, and other Azure services
  • Configure frontend build and deployment pipelines in Azure DevOps

Code Quality&Best Practices:

  • Conduct code reviews focusing on frontend best practices, performance, and accessibility standards
  • Implement and enforce frontend coding standards, ESLint rules, and TypeScript configurations
  • Maintain comprehensive documentation for components, APIs, and development processes

User Experience&Accessibility:

  • Ensure applications meet WCAG accessibility guidelines and provide inclusive user experiences
  • Implement responsive design patterns and mobile-first development approaches
  • Collaborate with UX researchers to implement user feedback and improve interface usability

General Experience

  • Bachelor's or Master’s degree in Computer Science, Web Development, or related field
  • 5+ years in frontend application development
  • Proven track record of delivering complex user interfaces and web applications

React&Frontend Expertise

  • Expert-level knowledge of React, including hooks, context API, and advanced patterns
  • Strong experience with TypeScript and modern JavaScript (ES6+)
  • Experience with component libraries (Chakra UI, Material-UI, Ant Design, or custom solutions)
  • Knowledge of CSS-in-JS solutions and modern CSS frameworks

Frontend Architecture Skills

  • Experience with microfrontend architectures and module federation
  • Strong understanding of webpack, Vite, or other modern build tools
  • Knowledge of atomic design principles and component-driven development
  • Experience with design systems and style guides implementation

Testing&Quality

  • Proficiency in frontend testing frameworks ( React Testing Library, Playwright)
  • Experience with visual regression testing and accessibility testing tools
  • Knowledge of performance testing and optimization techniques

Azure&DevOps

  • Experience with Azure Static Web Apps, Azure CDN, and frontend deployment strategies
  • Proficiency in building CI/CD pipelines for frontend applications in Azure DevOps
  • Understanding of Azure Application Insights for frontend monitoring

Soft skills

  • Design Collaboration: Work effectively with UX/UI designers to implement pixel-perfect interfaces
  • User-Centric Thinking: Focus on user experience and accessibility in all development decisions
  • Cross-Functional Communication: Bridge technical and design teams effectively
  • Attention to Detail: Ensure high-quality, polished user interfaces
  • Performance Mindset: Prioritize application performance and user experience metrics
  • Continuous Learning: Stay updated with frontend trends and emerging technologies
  • Problem Solving: Debug complex frontend issues and optimize user experiences
  • Time Management: Balance feature development with technical debt and optimization
  • Quality Focus: Maintain high standards for code quality and user experience
  • Experience with RESTful API integration and GraphQL
  • Knowledge of progressive web app (PWA) development
  • Familiarity with design tools (Figma, Sketch) for developer handoff
  • Experience with agile at scale (SAFe/Spotify)
  • Proficiency with AI-powered development tools (GitHub Copilot, Cursor, etc.) to enhance productivity
  • Competitive salary depending on your experience
  • Professional development opportunities
  • Study and practice of English: courses and communication with colleagues and clients from different countries
  • Yoga classes
  • Compensation package (paid vacation, sick leaves)
  • Flexible working hours (from 9-11 to 18-20)
  • Comfortable office in Warsaw or a possibility to work remotely

If your qualifications and experience match the requirements of the position, our recruitment team will reach out to you in a week maximum. Please rest assured that we carefully consider each candidate, but due to the amount of applications the review and further processing of your candidacy may take some time.

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