CareerOS is a B2B2C career platform serving 100+ top MBA programs worldwide - including Oxford, INSEAD, London Business School, Georgetown, and Notre Dame - along with 30+ employers. We help 500K+ users land jobs they love. We're a small, high-output team based in Barcelona, operating with American startup intensity - we ship fast, own our decisions, and push each other to do great work. We work in small squads, each owning their own area of the product end-to-end. We're looking for a Junior Engineer who's strong on frontend and eager to grow into a full-stack developer. You'll ship real features from day one, learn fast, and work alongside senior engineers who'll help you level up. What you'll actually do You won't do busywork. You'll ship real features to real users. - Build frontend features - React and TypeScript will be your main focus. You'll implement UIs, work with design, and ship features users interact with daily. - Grow into full-stack - We expect willingness to work across the stack. You'll start touching Node.js APIs and databases as you get comfortable. - Build with AI tools - We use AI coding tools daily (Claude Code, Cursor - team members pick what works for them). You should be comfortable (or excited) to work this way. - Work directly with design - Implement responsive interfaces from Figma. Ask questions when specs are unclear. - Learn in production - We do continuous deployment. You'll see your code live quickly, learn from mistakes fast, and improve with each feature. What we're looking for Must-haves: - 1-2 years of experience (or strong projects/bootcamp background) building web applications - Confident with React and TypeScript - You can build UIs, manage state, and work with components - Code quality - Knowledge of SOLID principles and clean code practices - User focus - You have a strong sensibility for UI and UX and understand what makes a web application feel responsive and polished - Willing to learn full-stack - You're curious about how the backend works and want to grow in that direction - Good communication - You ask questions when stuck, share progress, and work well with others - Comfortable with feedback - You take code review seriously and want to improve - Fluent English - We're a distributed team; clear written communication is essential Strong signals: - Some backend experience with Node.js (even from side projects) - You are familiar with React Native - You have side projects or contributions that show you build things because you're curious - You've used AI coding tools and are excited about them - Bootcamp grad or self-taught with a strong portfolio - You've worked in a fast-paced environment before What this role is NOT Let's be honest about fit: - ❌ Not a laid-back internship - This is a real engineering job. You'll ship to production, own features, and be expected to deliver. - ❌ Not highly structured - You'll get support and mentorship, but you need to be proactive about learning and asking for help. - ❌ Not frontend-only - Frontend is your primary focus, but if you only want to implement user interfaces, this isn't the right fit. What you get - Competitive junior salary + stock options - Fully remote - Work from anywhere (EU timezone preferred for overlap) - Mentorship from senior engineers who want to help you grow - Small team where your work visibly matters - we have 500K+ users and real revenue - Direct access to founders and fast decision-making - Clear growth path - we promote from within as we scale Don't check every box but think you'd be great? Apply anyway. We care more about curiosity and drive than credentials.

• Write clean, efficient code for realtime 3D graphics applications • Write and oversee code quality, test automation, development standards, and best practices, ensuring robust, clean, and maintainable codebases • Write design documents for product features and application architecture • Collaborate with cross-functional teams to implement and optimize frontend solutions • Participate in code reviews and provide constructive feedback to team members • Troubleshoot and resolve complex technical issues in production environments

• Conduct quality, detailed immigration screenings to help identify viable cases • Build rapport with compassion, active listening, and cultural humility • Screen accurately for information on family and humanitarian immigration options • Collect consultation fees and maintain organized consultation scheduling and documentation • Log intakes for legal assessment, track outcomes, and follow viable vs. non-viable procedures • Support reception to obtain new leads and help route client calls

• Be part of a mission-driven design team focused on making Clerk the de facto solution for user management, organizations and billing for developers • Build cutting-edge web experiences using advanced CSS, Shaders, WebGL, and modern animation frameworks (like motion.dev) to create event driven animations, and immersive visual experiences. • Implement sophisticated micro-interactions that guide visitors through our website, making complex developer tools feel approachable and exciting • Collaborate closely with the growth design team to translate concepts into living, breathing web experiences that capture attention and drive conversion • Push the boundaries of web animation while maintaining performance across all devices - creating experiences that make visitors stop scrolling and say "wow" • Optimize for both delight and performance ensuring smooth 60fps experiences across desktop and mobile while maintaining fast loading times and accessibility standards • Prototype and iterate rapidly on marketing concepts, using motion to tell compelling product stories and differentiate Clerk in the crowded developer tools market • Establish our animation voice creating a distinctive motion language that makes Clerk's marketing presence instantly recognizable and memorable