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About the Role

As a Senior Front-End Engineer, you’ll craft elegant, accessible, and responsive user interfaces for web applications used by global enterprise clients. You’ll work primarily within the React ecosystem to deliver rich, high-performing experiences, collaborating closely with designers and cross-functional teams and occasionally contributing to multi-platform experiences, including mobile and low-code environments.

Responsibilities

• Build, maintain, and optimize high-quality web interfaces using React.js, TypeScript, and modern front-end tooling
• Translate Figma and other design mockups into pixel-perfect, responsive, and accessible user experiences
• Collaborate with designers, product managers, and backend engineers to implement UI components and end-to-end features
• Ensure front-end performance, cross-browser compatibility, and accessibility (including WCAG-aligned best practices)
• Implement animations, transitions, and micro-interactions that enhance UX without compromising performance
• Integrate front-end applications with RESTful APIs and third-party services (such as payment platforms like Stripe)
• Contribute to and help maintain a scalable, reusable front-end component library and design system
• Participate in code reviews, technical design discussions, and architectural decisions for front-end solutions
• Write unit and integration tests to ensure front-end quality, reliability, and stability in production
• Stay current with modern front-end trends, tooling, and performance techniques, sharing knowledge with the team
• Other duties as assigned

About You

Qualifications & Skills

• 5+ years of relevant front-end development experience, including building production-grade applications with React.js
• Strong command of HTML5, CSS3 (including Flexbox/Grid), modern JavaScript (ES6+), and TypeScript
• Proven ability to deliver pixel-perfect UI implementations with strong attention to spacing, color, typography, and responsiveness
• Solid understanding of web accessibility principles and experience building accessible components
• Experience integrating and consuming RESTful APIs and managing client-side state with tools such as Redux, Context API, or React Query
• Familiarity with component-based architecture and reusable design systems or UI libraries
• Comfortable working with Git-based workflows, CI/CD pipelines, and Agile development practices
• Fluent in English (written and spoken) with clear, proactive communication skills
• Experience with front-end testing tools such as Jest, React Testing Library, or Playwright

Nice to Have

• Experience building mobile applications with React Native
• Knowledge of payment integrations (e.g., Stripe), including checkout flows and webhooks
• Familiarity with Webflow or similar low-code / no-code platforms for marketing site updates or rapid prototyping
• Experience working closely with UX/UI teams and a strong product/design sensibility
• Exposure to frameworks and libraries such as Next.js, Framer Motion, or other animation tools
• Understanding of SEO and performance optimization best practices for single-page applications
• Contributions to open-source projects, technical blogs, or developer communities
• Exposure to OTT (over-the-top) / streaming platforms
• B2+ English level is required

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About Monks

Monks is the global, purely digital, unitary operating brand of S4Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global marketing and technology services to accelerate business possibilities and redefine how brands and businesses interact with the world. Its integration of systems and workflows delivers unfettered content production, scaled experiences, enterprise-grade technology and data science fueled by AI—managed by the industry’s best and most diverse digital talent—to help the world’s trailblazing companies outmaneuver and outpace their competition.

Monks was named a Contender in The Forrester Wave™: Global Marketing Services. It has remained a constant presence on Adweek’s Fastest Growing lists (2019-23), ranks among Cannes Lions' Top 10 Creative Companies (2022-23) and is the only partner to have been placed in AdExchanger’s Programmatic Power Players list every year (2020-24). In addition to being named Adweek’s first AI Agency of the Year (2023), Monks has been recognized by Business Intelligence in its 2024 Excellence in Artificial Intelligence Awards program in three categories: the Individual category, Organizational Winner in AI Strategic Planning and AI Product for its service Monks.Flow. Monks has also garnered the title of Webby Production Company of the Year (2021-24), won a record number of FWAs and has earned a spot on Newsweek’s Top 100 Global Most Loved Workplaces 2023.

We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people to freely express themselves amongst colleagues who embrace diversity in all respects. Including fresh voices and unique points of view in all aspects of our business not only creates an environment where we can all grow and thrive but also increases our potential to produce work that better represents—and resonates with—the world around us.