Senior Frontend Engineer – SaaS Platform

Work at the heart of a globally scaled SaaS platform, purpose-built for uncovering stories in complex data. This profitable, privately held technology company has grown from a small local team to a globally respected product suite used by major organisations across industries—from tech giants to market research powerhouses.

Known for its deep engineering culture, the business champions thoughtful, long-term product development and elegant UX execution. With no external investors and no corporate noise, the company remains focused on quality, craft, and customer-centric innovation.

They’re expanding their User Experience function and looking for a senior-level frontend specialist to take full ownership of critical product experiences used every day by clients worldwide.

Key Responsibilities:

• Architect, build and evolve sophisticated UIs for a highly complex SaaS platform
• Own frontend feature areas from concept through to delivery and long-term support
• Work closely with product and design leaders to shape how users interact with analytical tools
• Influence component libraries, accessibility standards, and frontend development processes
• Set the tone for code quality, maintainability, and scalability across a mature React ecosystem
• Collaborate with backend engineers to ensure seamless end-to-end functionality
• Mentor and support other engineers while helping define frontend technical direction

Desired Skills and Attributes:

• Extensive experience building large-scale frontend applications in a product-focused environment
• Strong command of JavaScript, TypeScript, and React
• Familiarity with MobX or similar state management libraries (advantageous)
• Sound architectural thinking across component design, state management, and performance
• A user-centric mindset with the ability to influence UX decisions
• Ability to make pragmatic technical decisions balancing speed, quality, and maintainability
• Skilled in code reviews, collaboration, and setting a high bar across teams
• Experience working on long-lived products with multi-year roadmaps and real usage at scale

Why Join?:

This is a career-defining opportunity to work on a real product — not agency work or MVP churn. You’ll contribute to a globally used analytics platform with deep product challenges and rich engineering problems to solve.

Enjoy a strong culture of autonomy, intelligent peers, and long-term product thinking. The team operates with trust and respect, empowering senior engineers to make key architectural and UX decisions.

With generous compensation, meaningful equity, and flexibility baked in, this is a rare opportunity to influence a product’s frontend direction from within a business that values engineering excellence.

Apply now and one of the White Bay team will reach out to you very soon.

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• Architect SaaS UIs at scale
• Global product with complex challenges
• High-trust, deeply technical team

Boolean String:

JavaScript, TypeScript, React, MobX, frontend architecture, SaaS, UX, UI, accessibility, performance, state management, product development, mentoring