Middle Frontend Engineer

Roslin – Building the Future of Ground Transportation

At Roslin, we empower the global ground transportation industry with intelligent, cloud-native technology that drives efficiency, reliability, and scale. Our solutions range from AI-driven fleet and dispatch systems to multi-brand marketing and passenger engagement tools - including the platform powering thousands of Non-Emergency Medical Transportation (NEMT) rides daily in the U.S., optimizing routes, ensuring compliance, and coordinating seamlessly between providers and passengers.

From our exclusive IT & Marketing hub in Warsaw (Wola), we are looking for a Middle Frontend Engineer to build responsive, high-performance interfaces for our internal SaaS products. You’ll work closely with designers, backend engineers, and product teams to turn complex workflows into intuitive user experiences that scale.

Key Responsibilities

• Develop and maintain responsive, high-quality frontend applications using React, Vite, and Shadcn.
• Collaborate with cross-functional teams to translate UI/UX wireframes into functional features.
• Optimize applications for speed, scalability, and accessibility.
• Ensure cross-browser compatibility and adherence to web standards.
• Identify and fix performance or usability issues.
• Write clean, maintainable, and well-documented code.
• Participate in code reviews and follow established architecture patterns.

🛠 Technical Requirements

• 3+ years of commercial experience as a Frontend Engineer.
• Strong proficiency in HTML5, CSS3, JavaScript/TypeScript (ES6+), and React.
• Experience using hooks efficiently, managing re-renders, and working with Redux, Redux DevTools, Tailwind CSS, and v0.
• Familiarity with frontend build tools (Webpack, Git, Vite) and RESTful API integration.
• Knowledge of responsive design principles and best practices.
• Strong attention to detail and ability to write scalable, maintainable code.

🤝 Soft Skills

• Fluent English (written & spoken).
• Collaborative mindset with strong communication skills.
• Proactive problem solver with an eye for UI/UX quality.
• Eager to learn and improve within a structured engineering environment.

What We Offer

💰 Competitive compensation based on impact

📄 B2B contract

🗓️ Work at your best - select from 9–6, 10–7, or 11–8 and keep your work-life balance in check.

🏙️ Work model: Hybrid from Warsaw

🏢 Brand-new office in Warsaw (Wola)

👨 💻 Fully in-house engineering (no outsourcing/outstaffing)

🚄 Opportunity to work on high-impact, mission-critical projects for the US market from day one.

🤖 Company-paid access to Claude Opus 4.1 and Codex GPT-5 for advanced AI-assisted development.

🏋️ Multisport card planned as the team grows

📧 Send your CV to [email protected] or hit LinkedIn Apply — your next challenge starts here!