Senior Frontend Developer - Mobile and Web Applications

About the Role

We are seeking a Senior Frontend Developer - Mobile and Web Applications to join our dynamic team at Mine. As a Senior Frontend Developer, you will play a crucial role in building and scaling our user-facing applications that serve over 1 million users. This position offers an exciting opportunity to work with modern technologies, including TypeScript, Node.js, React, and Flutter, while leveraging AI to enhance our internal workflows.

What You'll Do

• Take end-to-end ownership of the frontend development lifecycle—from architecture and implementation to testing, deployment, and optimization.
• Build out and iterate on our AI product initiatives.
• Develop and maintain high-quality applications using Flutter.
• Collaborate closely with designers, product managers, and backend engineers to create intuitive, delightful user experiences.
• Lead complex technical projects involving multiple engineers and push the design team to deliver world-class products.
• Balance team collaboration with independent execution to meet ambitious goals and tight timelines.
• Architect, refactor, and debug applications at scale without introducing regressions.
• Utilize observability tools like Sentry and Datadog to monitor and optimize application performance.
• Implement and maintain event tracking systems using tools like RudderStack and Mixpanel.
• Mentor junior developers and help establish engineering best practices.

Requirements

• 3+ years of experience in mobile development with strong Flutter expertise.
• Experience building and maintaining mobile/web applications at scale.
• Strong experience with modern frontend tooling, architectural patterns, testing frameworks, and CI/CD pipelines.
• Familiarity with observability and analytics tools (Sentry, Datadog, RudderStack, Mixpanel).
• Startup experience and ability to thrive in fast-paced, ambiguous environments.

Nice to Have

• Experience with flutter_bloc.
• Experience building applications with React, TypeScript, and Node.js (Express).
• Experience at world-class product organizations (e.g., Brex, Ramp, Stripe, CashApp, Airbnb).
• Experience optimizing fintech onboarding flows and KYC processes.
• Strong design sense.

What We Offer

• Work with colleagues you’ll want to hang out with.
• Generous equity in an early-stage startup.
• 100% employer-paid medical benefits.
• Flexible work-from-home policy.
• Unlimited vacation policy with 15 official company holidays.
• 401K plan with 4% company match.
• 16 weeks of paid parental leave, including adoption and fostering.
• Visa sponsorship is available for qualified candidates.