Senior Frontend Engineer (SF, YC)

Pragmatike • Los Angeles, CA

3d • Onsite

About The Position

Pragmatike is partnering with a YC-backed AI technology start-up building ambitious products at the intersection of software, intelligence, and user experience. We're looking for a Frontend Engineer who thrives in fast-paced environments and enjoys taking ownership of highly interactive product experiences from concept through delivery. This role is ideal for someone who combines strong engineering fundamentals with product intuition and a genuine passion for crafting exceptional user experiences. You'll work closely with engineers, founders, and product stakeholders to build responsive, high-performance interfaces that make sophisticated technology feel intuitive and effortless.

Requirements

• 4+ years of professional frontend engineering experience.
• Strong expertise with React and TypeScript.
• Experience building complex web applications at scale.
• Deep understanding of state management and modern frontend architecture.
• Strong product sense and ability to make informed UX decisions.
• Experience working closely with backend systems and APIs.
• Ability to operate independently and thrive in ambiguous environments.
• Strong attention to detail and commitment to high-quality user experiences.
• Excellent communication skills and collaborative mindset.

Nice To Haves

• Experience with real-time or collaborative applications.
• Exposure to AI-powered products or developer tools.
• Familiarity with modern frontend ecosystems, including advanced caching and synchronization strategies.
• Experience in startup or high-growth environments.
• Design experience or strong visual product instincts.
• Experience helping establish engineering standards in early-stage teams.

Responsibilities

• Design, build, and maintain modern web applications using React and TypeScript.
• Develop highly interactive user experiences with a strong focus on performance and responsiveness.
• Collaborate closely with product and engineering teams to define and ship new features.
• Take ownership of frontend architecture and contribute to technical decision-making.
• Build reusable components and scalable frontend systems.
• Optimize application performance, state management, and data-fetching strategies.
• Contribute across the stack when needed, helping deliver end-to-end features.
• Improve development workflows, tooling, and engineering best practices.
• Create thoughtful user experiences, including loading states, error handling, and accessibility considerations.

Benefits

• Relocation Assistance
• Visa sponsorship
• Significant ownership
• Direct access to decision-makers
• Meaningful influence on product direction
• Opportunity to work alongside exceptional engineers in a collaborative onsite environment.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed