Senior UI/UX Developer (Next.js / App Builder)

Who We Are

TransPerfect is the world's largest provider of language services and technology solutions for global business. From offices in over 140 cities on six continents, TransPerfect offers a full range of services in 170+ languages to clients worldwide. More than 6,000 global organizations employ TransPerfect's GlobalLink® technology to simplify management of multilingual content. With an unparalleled commitment to quality and client service, TransPerfect is fully ISO 9001 and ISO 17100 certified. TransPerfect has global headquarters in New York, with regional headquarters in London and Hong Kong. For more information, please visit our website at www.transperfect.com.

What We’re Building (and Why It’s Kind of a Big Deal)

We’re a small team inside TransPerfect building a massive internal platform—a low-code application builder that’s powering how our entire company operates. It’s ambitious. It’s complex. It’s not “done.” And that’s exactly why it’s fun.

What You’ll Actually Be Doing

• Build and evolve a drag-and-drop app builder used across the company
• Collaborate and shape frontend architecture decisions (React / Next.js)
• Implement highly interactive, state-heavy UIs
• Create component systems that non-developers can configure and use
• Balance performance, usability, and flexibility in a complex environment
• Partner closely with product and design (who have opinions) and engineering (who have different opinions)

The Kind of Engineer This Role Needs

• Is comfortable when things are a little messy
• Can figure things out without a playbook
• Has strong eye for design and knows when to pivot
• Can think like both a developer and a designer
• Doesn’t panic when priorities shift or structure evolves

Core Technical Stuff (Yes, This Still Matters)

• React / Next.js (deep experience, not surface-level)
• Advanced state management (handling complex, nested, high-volume UI state)
• TypeScript (strict mode)—you’re comfortable modeling complex systems
• Component architecture—you’ve built systems, not just screens
• Styling systems (we use a mix of MUI + Tailwind… yes, really, so experience in both is preferred)
• Performance tuning (keeping things smooth even when they shouldn’t be)

Bonus Points

• Experience with low-code/no-code tools
• Thinking in JSON schemas / UI-as-data
• Building drag-and-drop interfaces

Design Mindset (This Is Big for Us)

• You can design dense interfaces that still feel usable
• You think about how users actually interact with systems
• You understand tradeoffs between flexibility and clarity
• You’re comfortable shaping UX—not just implementing it

The Basics (Still Required)

• Bachelor’s degree or equivalent experience
• Experience building highly interactive web apps
• Strong performance mindset
• Familiarity with modern frontend tooling

Where Your Career Is Going

At TransPerfect, there are a lot of growth opportunities. All departments offer career growth and development that can combine your skills, interest and experience. We encourage our employees to have a continuous dialogue with management about growth opportunities throughout your tenure with the company.

Job Requirements

• React / Next.js (deep experience, not surface-level)
• Advanced state management (handling complex, nested, high-volume UI state)
• TypeScript (strict mode)—you’re comfortable modeling complex systems
• Component architecture—you’ve built systems, not just screens
• Styling systems (we use a mix of MUI + Tailwind… yes, really, so experience in both is preferred)
• Performance tuning (keeping things smooth even when they shouldn’t be)
• You can design dense interfaces that still feel usable
• You think about how users actually interact with systems
• You understand tradeoffs between flexibility and clarity
• You’re comfortable shaping UX—not just implementing it