Senior JavaScript Engineer

About the Position

Ciklum is looking for a Senior JavaScript Engineer to join our team in Argentina. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts, and product owners, we engineer technology that redefines industries and shapes the way people live.

Responsibilities

• Build & Maintain UI Libraries: Engineer, govern, and evolve a unified enterprise design system powering digital code platforms, learning management systems, mobile/hybrid interfaces, and compliance portals.
• Technical Ownership: Drive front-end strategy, component architecture, tooling, and governance to ensure consistency across multiple public and internal web applications.
• Accessibility & Performance: Enforce strict adherence to WCAG 2.2 AA standards, semantic HTML, ARIA patterns, keyboard navigation, and Core Web Vitals optimization.
• Stakeholder Sync & Design Alignment: Collaborate in real-time with US-based Product Managers, UX Designers, and Architects to translate complex workflows into reusable UI components.
• Governance & Tooling: Manage semantic versioning of UI packages, write technical documentation, handle breaking changes, and automate UI testing pipelines.
• Mentorship & Excellence: Mentor mid-level engineers on modern JavaScript/TypeScript patterns, testing methodologies, and web component design.

Requirements

• Software Design:
  • Experience in designing solution architectures for enterprise design systems, design tokens, and web component design.
  • Uses established standards and algorithms for translating complex technical workflows into UI components and maintaining semantic versioning.
• Software Development:
  • Proficient in native JavaScript, TypeScript, semantic HTML5, and CSS3 (CSS Modules, Styled Components, Tailwind CSS, Sass).
  • Practical use of advanced features in React (Hooks, Context, State Management, SSR/Next.js) and Web Components.
  • Experience in refactoring existing applications according to accessibility (WCAG 2.2 AA) and performance requirements.
  • Bonus: Experience building cross-platform web/mobile components using Ionic Framework.
• Quality Assurance:
  • Hands-on experience with testing approaches and tools (Storybook, Jest, React Testing Library, Cypress, visual regression tools).
  • Ability to adjust and maintain code quality rules, accessibility testing (NVDA/JAWS/VoiceOver), and Core Web Vitals metrics.
• Software Deployment:
  • Experience in configuring CI/CD pipelines (GitHub Actions, GitLab CI) and build tools (Vite/Webpack).
  • Collaborates with the DevOps team to set up continuous delivery workflows.

We Offer

• Care: Your mental and physical health is our priority. We ensure comprehensive company-paid medical insurance and mental health programs, 5 undocumented sick-leave days per year.
• Tailored education path: Boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy license, language courses, and company-paid certifications.
• Growth environment: Share your experience and level up your expertise with a community of skilled professionals, locally and globally.
• Long-term employment: 20 working-days paid vacation and local bank holidays.
• Flexibility: 100% remote work mode.
• Opportunities: We value our specialists and always find the best options for them. Our Internal Mobility Program helps change a project if needed to help you grow, excel professionally, and fulfill your potential.
• Global impact: Work on large-scale projects that redefine industries with international and fast-growing clients.
• Welcoming environment: Feel empowered with a friendly team, open-door policy, informal atmosphere within the company, and regular team-building events.

About the Company

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

As we expand into Latin America, every Ciklumer is helping to shape our story. Collaborate with seasoned experts and make a global impact backed by two decades of industry leadership.

Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.