Senior Frontend Engineer

Mariana Tek, part of Xplor, is building and scaling a modern platform that powers boutique fitness brands worldwide. Our best-in-class studio management software helps businesses sell products, manage classes, and track performance, all while delivering an exceptional user experience. 

We’re looking for a Senior/Staff Frontend Engineer with advanced Ember.js expertise and strong React + TypeScript skills to help shape the future of our customer-facing applications and studio management tools. This role goes beyond writing great code: you’ll provide architectural direction, mentor engineers, and collaborate with stakeholders to deliver high-quality, scalable solutions. 

Your work will directly impact thousands of fitness enthusiasts and studio owners across the globe. 

Our Tech Stack

• Frontend: Ember.js, React, TypeScript, JavaScript (ES6+), CSS/SCSS 

• Backend: Python, Django 

What You’ll Do

• Take ownership of frontend initiatives, driving architecture, implementation, and delivery. 

• Write clean, performant, maintainable code in Ember.js, React, and TypeScript. 

• Mentor engineers, fostering a culture of collaboration, inclusion, and engineering excellence. 

• Collaborate with product managers, designers, and backend engineers to deliver impactful features. 

• Contribute to and help evolve our shared component-based design system, ensuring consistency, accessibility, and scalability. 

• Lead thoughtful code reviews and set best practices for frontend development. 

• Participate in Agile ceremonies, helping with project planning and estimation. 

• Identify and address technical debt while balancing long-term sustainability with product velocity. 

What We’re Looking For

• 5+ years of professional frontend engineering experience. 

• Advanced hands-on expertise with Ember.js (Ember Data, Ember CLI, testing strategies, performance optimizations). 

• Strong proficiency in React and TypeScript, including hooks, state management, and modern component design. 

• Experience building and scaling large, mature single-page applications. 

• Proven experience influencing architecture and technical direction. 

• Strong understanding of accessibility and building inclusive, user-friendly interfaces. 

• Familiarity with micro-frontend architecture and web components. 

• Experience with modern build tooling (e.g., Webpack, Vite). 

• Exposure to internationalization/localization, web APIs (e.g., Web Workers, Push API), and CI/CD practices. 

• Excellent communication skills and the ability to collaborate across product, design, and engineering. 

• Pragmatic mindset with a passion for delivering high-quality user experiences. 

• Bonus: Experience with SaaS platforms or customer-facing applications, and/or backend frameworks like Python/Django. 

Work Skills & Personal Characteristics

• Clear, kind communicator with both technical and non-technical colleagues. 

• Collaborative team player who can also drive individual initiatives. 

• Eager to mentor and elevate teammates while remaining open to learning from others. 

• Interested in technology, product development, and the boutique fitness industry. 

Why Join Us

• Opportunity to shape the frontend direction of a platform used by fitness brands worldwide. 

• Modern tech stack with Ember.js, React, and TypeScript at its core. 

• Supportive, growth-oriented culture that values technical excellence and mentorship. 

• Competitive compensation and benefits. 

Bachelor’s degree in Computer Science