Senior Frontend Engineer

Hybrid, Bucharest, Romania · Romania · 5-7 years experience · Full-time · Hybrid · Posted Sep 30, 2026

At a glance

Join Legion's mission to turn hourly jobs into good jobs. We're a mission-driven team seeking exceptional talent to propel this vision. Embrace a culture that's collaborative, fast-paced, and entrepreneurial. With us, you'll grow your skills, work closely with experienced executives, and contribute significantly to our mission.
Our award-winning AI-native workforce management platform is intelligent, automated, and employee-centric and proven to deliver 13x ROI. We help labor-intensive organizations maximize labor efficiency and employee engagement simultaneously.
Legion has earned recognition for its innovation, including spots on the Inc. 5000 list, Forbes’ Next Billion Dollar Startups, and awards for our AI technology. Backed by leading investors such as Norwest Venture Partners, Stripes, First Round Capital, XYZ Ventures, Webb Investment Network, Workday Ventures, and NTT DOCOMO Ventures, we're making real change.
If you're ready to make an impact and grow your career, Legion is where you belong. Join us in making hourly work rewarding and fulfilling.

The Senior Frontend Engineer will join the team responsible for the implementation and evolution of the Legion application, a high-performance data-driven Java enterprise platform.
This role involves building enhancements and extensions for web and mobile frontend applications while ensuring scalability and performance.

Write secure, efficient, enterprise-quality code.
Plan and conduct architecture sessions, design, and build enhancements and extensions.
Create plans for integration and unit testing.
Help multiple customers simultaneously and travel to customer locations as required.
Actively set and manage expectations.
Understand, adapt, and act within the customer’s organization and culture.
Continually acquire knowledge about customers and solutions to grow adoption.
Manage difficult situations in a calm and structured way with internal and external customers.
Communicate to all levels of individuals.
Participate in an on-call rotation.

5-7 years of experience working with AngularJS and React technologies.
Experience with CSS3, HTML/HTML5, JavaScript, Bootstrap, and jQuery including cross-browser compatibility issues.
Experience building software products and handling complexities of multiple configurations in a cloud-based product.
Bachelor’s or Master’s Degree in Computer Science, Engineering, Mathematics or similar field.

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