Senior Frontend Engineer

About the Team

The HIFI platform team builds the infrastructure, developer experiences, and financial workflows that power stablecoin-native finance  team designs and maintains the APIs, user-facing tools, and partner integrations that allow customers to create accounts, move money across bank and blockchain rails, and operate compliant global payment systems.

We work across the full lifecycle of modern money movement-from account creation and ledgering, to fiat and stablecoin settlement, to global payouts and onchain connectivity. Our customers span fintech platforms, marketplaces, exchanges, neobanks, payroll providers, and tokenized asset platforms operating across the U.S., Europe, Africa, Lat Am, and MENA.

This is an opportunity to help build one of the fastest-growing segments of financial infrastructure and define how money moves on the internet over the next decade.

We're looking for a Senior Frontend Engineer to lead development of the primary products through which developers interact with HIFI. From our Developer Dashboard to SDKs and integration tooling, you’ll architect and deliver performant, elegant, and reliable experiences that make our infrastructure accessible at scale.

This role requires a combination of deep technical expertise and strong product intuition. You will set standards for code quality, drive architectural decisions, mentor other engineers, and ensure flawless usability across all developer-facing surfaces.

This role is based in-person in New York, working closely with our engineering and GTM teams.

We value people who:

• Find large challenges exciting and enjoy discovering and defining problems as much as solving them
• Deliver — you may enjoy thoughtful conversations and perfecting designs, but in the end, you care about building reliable solutions that ship
• Communicate clearly and comfortably across teams, asking questions, sharing ideas, and speaking up
• Learn quickly, stay curious, and adapt to new challenges with a growth mindset
• Move fast and stay effective in ambiguous, evolving environments, with a strong sense of urgency to get things done
• Give and receive feedback openly, and collaborate across functions
• Bring passion and experience — for Web3, modern payment solutions, or anything else — and channel it into their work

• Lead development of the Developer Dashboard, SDKs, and integration tooling used by enterprise and developer customers.
• Architect responsive, high-performance web and mobile applications for mission-critical workflows.
• Own and evolve design systems and reusable component libraries at scale.
• Define and enforce accessibility, usability, and developer experience best practices.

• Drive architecture decisions for frontend systems to maximize performance, resiliency, and maintainability.
• Build fast, reliable build pipelines optimizing developer velocity.
• Design comprehensive testing frameworks and monitoring to guarantee uptime and reliability.
• Champion continuous performance tuning, technical debt reduction, and security improvements.
• Partner with engineering, product, and GTM leads to define product requirements and developer journeys.
• Influence product roadmap and advocate for developer needs.
• Exercise strong product judgment. Prioritizing simplicity and clarity in developer tools.

• Ensure frontend systems are capable of supporting global usage and billions in transaction volume.
• Design integration frameworks and SDKs that enable seamless API adoption.
• Proactively anticipate future product needs and scalability requirements.

• Mentor and support junior/mid-level engineers across the frontend stack.
• Contribute to hiring, onboarding, and growing frontend engineering culture.

• 4+ years building and shipping high-performance frontend applications in production
• Deep proficiency in React, Type Script, and modern frameworks (e.g., Next.js, React Native)
• Experience leading architecture and owning design systems / component libraries
• Strong product instincts. Able to shape user experience and influence product direction
• Skilled with CI/CD, testing frameworks,…