Senior UI/Frontend Engineer (AI)

Role Summary

• Location: Cambridge, MA (Eastern Time / UTC -4)
• Relocation package: Available
• Start date: ASAP
• Languages: English (required)

Pragmatike is hiring on behalf of a fast-growing AI startup recognized as a Top 10 GenAI company by GTM Capital, founded by MIT CSAIL researchers.

We are searching for a Senior UI / Frontend Engineer with strong, hands-on experience building high-quality, high-performance user interfaces for complex, data-intensive AI products used by Fortune 500 customers.

This role is ideal for an engineer who cares deeply about UX, performance, and maintainable frontend architecture—someone who can own features end to end, collaborate closely with design and backend teams, and deliver polished, production-ready interfaces at scale.

WHY THIS ROLE WILL PIVOT YOUR CAREER

• Research pedigree: MIT CSAIL founders with deep AI and systems expertise.
• Customer impact: Build interfaces used by Fortune 500 clients.
• Industry momentum: Alumni behind major acquisitions (MosaicML Databricks, Run:AI NVIDIA, W&B CoreWeave).
• Funding & growth: Oversubscribed seed round, next funding planned for 2026.
• Ownership: Lead UI features for mission-critical products.
• Quality & craft: Work on frontend problems that prioritize performance and UX at scale.

Responsibilities

WHAT YOULL DO

• Build and maintain modern, production-grade web interfaces using React and TypeScript.
• Translate product requirements and design systems into clean, scalable UI components.
• Own complex frontend features end to end, from implementation to production support.
• Optimize UI performance for large datasets, real-time updates, and high-usage dashboards.
• Collaborate closely with product, design, and backend teams to ship user-facing features.
• Establish frontend best practices around state management, testing, and code quality.
• Improve frontend architecture, tooling, and developer experience.
• Debug and resolve production UI issues across browsers and devices.

Requirements

WHAT WERE LOOKING FOR

• 5+ years of experience as a Frontend / UI Engineer.
• Strong proficiency with React and TypeScript in production environments.
• Solid understanding of modern frontend architecture and component-based design.
• Experience building responsive, accessible, and high-performance user interfaces.
• Familiarity with frontend build tools, bundlers, and CI/CD workflows.
• Ability to collaborate effectively with designers and backend engineers.
• Comfortable owning features and shipping to production.

BONUS POINTS

• Experience building data-heavy dashboards or real-time web applications.
• Familiarity with modern state management solutions (Redux, Zustand, React Query).
• Experience with design systems and component libraries.
• Exposure to AI-driven or ML-powered products.
• Startup experience or comfort working in fast-moving, ambiguous environments.

Benefits

• Competitive salary & equity options
• Sign-on bonus
• Health, Dental, and Vision
• 401(k)

Pragmatike is an Equal Opportunity Employer and is committed to providing equal employment opportunities to all applicants without discrimination. We recruit on behalf of our clients and prohibit discrimination and harassment based on race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.We are committed to a fair and inclusive hiring process. We process your personal data solely for recruitment purposes, in accordance with applicable privacy laws, and maintain reasonable safeguards to protect your information. Your data may be shared with our client(s) for hiring consideration, but will not be disclosed to third parties outside of the recruitment process.

About the Company

Our client is one of the very few companies worldwide to control the entire AI infrastructure value chain, from energy through to orchestration software. You will join a team deploying a tangible technology, modular units operational within months, on an ambitious growth trajectory toward becoming one of the largest distributed infrastructure networks globally. Expect real autonomy from day one, direct access to clients and group leadership, and the opportunity to build the financial foundations of a company building something that doesn't exist yet.

Pragmatike is dedicated to a fair, transparent, and inclusive recruitment process. We ensure that no applicant is discriminated against based on age, disability, gender, gender identity or expression, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex, or sexual orientation. In accordance with the General Data Protection Regulation (GDPR), your personal data will be processed lawfully, fairly, and securely. We collect and use your personal data solely for recruitment purposes, including sharing it with our client(s) for employment consideration. You have the right to request access, correction, or deletion of your data at any time. We are committed to maintaining the confidentiality and security of your information throughout the recruitment process.