Senior Frontend Developer - Mobile and Web Applications

Technology

Our product sits on top of many modern technologies, including a TypeScript/Node.js backend with Express, MongoDB for database storage, React for web applications, and Flutter for mobile platforms. We pride ourselves on leveraging AI wherever possible to speed up internal workflows.

The Job

We need more engineering firepower. As the newest addition to our Frontend Dev team, you will be instrumental in building and scaling our user-facing applications that serve over 1million+ users. You'll take end-to-end ownership of frontend development, raise the bar significantly for our engineering culture, and help shape the future of how young adults interact with financial products.

If you have grit and taste, are an opinionated truth-teller, and take deep joy from crafting exceptional user experiences, Mine is a place to deploy your skillset to drive fast-paced growth and make a real difference.

We value in-person work in NYC. It helps us move faster, build genuine friendships, and get stuff done. We support relocation! If you’re unable to move to NYC and are still crazy about Mine, apply anyway.

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
• Build 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
• Work with 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
  

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What You Have

• 3+ years of experience in mobile development with strong Flutter expertise
• Built and maintained mobile/web applications at scale—experience architecting, refactoring, and debugging applications with lots of users
• Strong experience with modern frontend tooling, architectural patterns, testing frameworks, and CI/CD pipelines
• Experience with observability and analytics tools (Sentry, Datadog, RudderStack, Mixpanel)
• Startup experience and ability to thrive in fast-paced, ambiguous environments (wear lots of hats 🧢 👒 ⛑️)
  
  

Bonus Points

• Experience with flutter_bloc
• Experience building applications with React, TypeScript, and Node.js (Express)
• Early employee at a hyper-growth startup
• Experience at world-class product orgs (ex: Brex, Ramp, Stripe, CashApp, Airbnb)
• Experience optimizing fintech onboarding flows and KYC processes
• Strong design sense
• Y Combinator experience

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• Experience with financial services or regulated industries
  
  

Mine Perks

• Work with colleagues you’ll want to hang out with 🤓
• Generous equity in an early-stage startup 📈
• 100% employer-paid medical benefits 🩺
• Very sunny NYC Office with flexible WFH policy 💼
• your very own, company-mandated, desk plant 🪴
• lots of good office snacks 🍿 🍵
• 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 🌎
  

Actual compensation offer, including base salary and equity, may differ from the above depending on a candidate's location, skills, qualifications, and experience.Mine is values diversity of strengths, skills, backgrounds, and ideas in the workplace and is proud to be an Equal Opportunity Employer. We consider qualified applicants without regard to race, color, ancestry, religion, sex, national origin, sexual orientation, gender identity, age, marital or family status, disability, genetic information, veteran status, or any other legally protected basis under provincial, federal, state, and local laws, regulations, or ordinances. We will also consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable state and local laws. If you have a disability or special need that requires accommodation during any stage of the application process, please contact: legal@’usemine.com.