Senior Frontend Engineer

Job Description

Role Description As a Senior Frontend Engineer, you build the React / Next.js interfaces that people rely on every day, with a real eye for detail, accessibility, and performance. You'll work inside a Monks delivery team alongside design, product, and backend engineers, owning the experience end users actually touch. We build production web interfaces for clients, and we care about how they feel, not just whether they work. We're all-in on agentic engineering. Tools like Claude Code and Codex are part of our everyday workflow, and we're looking for people who are genuinely fluent working alongside AI coding agents and excited to push those practices further. Key Responsibilities Build responsive, accessible interfaces in React / Next.js and TypeScript. Turn designs into clean, reusable, and well-structured components with solid design-system sensibilities. Integrate with backend APIs and handle real-world states gracefully. Review code—including AI-generated code—for quality, consistency, and alignment with engineering standards. Keep performance, responsiveness, and accessibility high across the entire product. Work tightly with design, product, and backend teams to ship features end to end. Qualifications 5+ years of relevant experience in frontend development with strong React, Next.js, and TypeScript. Strong modern CSS, responsive layout, accessibility fundamentals, and solid component architecture. Comfortable integrating and debugging against APIs, backed by good testing habits. Comfortable in a fast-paced, agile consulting environment. Fluent in working alongside AI coding tools (e.g., Claude Code, Codex). Strong English communication skills. Bonus Skills (Extra Credit) Experience building data-dense dashboards or data visualizations. Real fluency with Figma and design handoff processes. Animation and interaction-design chops. Experience designing UX for AI-powered products. Open-source work you're proud to share. Company Description .Monks Technology Services, part of Media.Monks and S4 Capital, is a global consulting firm mastering AI-powered transformations for the Fortune 100. We combine long-term strategic thinking, deep enterprise experience, and a human-centered approach to help clients transform business processes and dominate their industries. As part of our commitment to inclusion and in compliance with Law 2466 of 2025 from Colombia, we have available spaces for people with disabilities. Monks is the global, digital-first, data-driven, unitary operating brand of S4 Capital plc. Named a Contender in The Forrester Wave™: Global Marketing Services. Ranks among Cannes Lions' Top 10 Creative Companies (2022-25). First AI Agency of the Year (2023) by Adweek. Inaugural AI Pioneer Organization by The One Show. Excellence in Artificial Intelligence Award in both the Organizational and AI Product categories (2025).