Senior Frontend Engineer

About Monstro Monstro is a governed AI platform for regulated financial institutions. We give banks and wealth managers a way to deliver trusted advice digitally — to every client, not just the top tier. Institutions already have the relationships, data, and context to understand each client. Monstro turns that understanding into advice. It gives every client the experience of a personal advisor: bringing together their full financial picture, identifying what matters, and delivering personalized guidance across investments, tax, retirement, insurance, legal, and more. For clients, that means clearer decisions, proactive support when life changes, and a better view of their financial lives. For institutions, it means deeper relationships, more clients served consistently, and more of each client's financial life managed in one place. What makes this possible is how the system is built. Every recommendation reflects the institution's own views, policies, and permissions. Every output is auditable, traceable, and reversible, and client data stays under the institution's control. Generative AI shapes how advice is designed; at runtime, execution is deterministic — so every output can be explained and stood behind, not just trusted. The work We are building for a high-stakes industry where the work has real consequences. The challenge is to make advice more personal and more available without making it less trusted — to build AI that institutions can audit, explain, and reverse, in a domain where being wrong carries real cost. That is a hard problem, and it is the reason to be here. You will work on technology that brings real financial advice to people who have rarely had access to it. You will be expected to think clearly, move with urgency, hold a high bar, and take responsibility for work that matters. We are an early team building something ambitious, and what you do here will shape both the product and the company. 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? Ownership & Impact: Shape the future of AI-powered finance - building a category-defining product used by consumers and institutions around the world. Experienced Team: Join a team with leadership that has a track record of scaling companies from early stage to major exits. Principles-Driven Culture: Work in a culture that values speed, ownership, and impact - what most companies achieve in 90 days, we do in 45. Comprehensive Compensation Package: Competitive salary, equity, and robust benefits package, including paid health, vision, dental, and disability coverage. 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 notetakers (whether added to video calls or in the background). Ready to Build With Us? If you’re excited to contribute to a high-bar team building something meaningful, we love to hear from you!