Senior Frontend Engineer

What You'll Do

Responsive Product Development in an AI-powered workflow

• Build and own features across our React applications, delivering polished experiences for our users and clients. Ensure the product feels native and responsive across different viewports, while maintaining a shared codebase. Utilise the latest AI powered tools (e.g. Claude/Codes etc) in your workflow, from design to build to deployment.

Frontend Architecture 

• Drive architectural decisions for our frontend stack—component structure, state management, navigation patterns, and API integration strategies. Establish patterns and abstractions that balance developer velocity with long-term maintainability.

Quality & Test-Driven Development 

• Champion a test-driven development culture. Design and implement comprehensive testing strategies spanning unit, integration, and end-to-end tests. Ensure the codebase remains reliable and regression-free as we scale.

Accessibility 

• Ensure our application meets accessibility standards, making our product usable for all users regardless of ability. Advocate for inclusive design practices throughout the development process.

Build & Delivery Pipeline 

• Work with build tooling, bundlers, and CI/CD pipelines to ensure smooth, reliable releases. Collaborate with platform engineers to optimize build times, automate quality gates, and streamline the path to production.

Collaboration & Mentorship 

• Partner with designers to translate vision into implementation and with backend teams to define effective API contracts. Mentor other engineers through code reviews, pairing, and technical guidance, raising frontend standards across the organization.

What We're Looking For

• 5+ years of professional frontend development experience
• Strong proficiency in React and Typescript with production web-app experience
• An appreciation of UX and the creative process
• Solid grasp of modern CSS, responsive design principles, and accessibility standards
• Experience with test-driven development and frontend testing frameworks
• Contributions to design systems or component libraries
• Confidence working with APIs and understanding backend services and system integrations.
• Comfortable working with build tooling, bundlers, and CI/CD integration
• Clear communicator who thrives in a collaborative, fast-moving environment
• Adaptable fast learner who is excited about staying on top of the latest trends in frontend development and wants to lead the team in adopting the latest best practices

Nice to Have

• Full stack experience including backend/API development experience (our backend is in python)
• Background in fintech or regulated industries

Why Monstro?

• Impact: Build technology that helps millions of people make better financial decisions, through the institutions they already trust, and help define the category of Financial Intelligence.
• Ownership: High trust, high ownership, high standards. You will own meaningful problems end to end from day one.
• Experienced team: Work with leadership that has a track record of scaling companies from early stage to major exits.
• Principles-driven culture: We move fast, because the opportunity is urgent. We communicate directly, because clarity saves time. We hold a high standard, because institutions and clients need to trust what we build.
• In person, in New York: We are headquartered at The Spiral in Hudson Yards and work in the office four days a week, because our pace depends on fast collaboration.
• Compensation and benefits: Competitive cash compensation and meaningful equity, plus 100% employer-paid medical, dental, and vision coverage, disability coverage, flexible PTO, paid parental leave, and catered meals.

Base Compensation Range for New York City: $180,000 - $230,000

*The posted range reflects the base salary for this role across the market ranges for each location. Final compensation will depend on a variety of factors, including experience, skills, internal leveling, and market conditions, and will be offered within the stated range in accordance with applicable pay transparency laws.

A Note on Interviewing:We sometimes use AI note-takers to help us transcribe interview notes, so we can be more present in your interview. If you’d like to opt out of us using automatic transcribers, please note this in the free text field in your application; otherwise we’ll take your application as confirmation that you’re happy for us to use note-takers (whether added to video calls or in the background).

Ready to Build With Us?

The standard is simple: do great work, own the outcome, communicate with purpose, move with urgency, raise the level. If that sounds like you, we’d love to hear from you.