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Job description
Overview
Senior Mobile Engineer (Flutter) at Harnham, New York City. FinTech startup building a next-generation investment platform enabling real-time discovery and replication of high-performing trading strategies. Hybrid role based in NYC with three in-office days per week. Base pay range: $150,000.00/yr - $170,000.00/yr + equity.
Responsibilities
Design, develop, and ship features in the Flutter app for iOS and Android
Collaborate with design and product teams to create performant, intuitive user experiences
Optimize app performance and maintain scalable architecture patterns
Write clean, testable code and participate in code reviews
Monitor analytics and crash reports to identify and resolve production issues
Contribute to infrastructure decisions, including CI/CD, testing, and release workflows
Assist with future web development efforts (Next.js) as needed
Requirements
Experience in mobile development with Flutter and Dart
Proven track record of deploying apps to iOS and Android app stores
Strong knowledge of mobile architecture, RESTful APIs, and reactive programming
Familiarity with Figma and modern UI/UX design systems
Exposure to Next.js and React is a plus
Experience with Firebase, CI/CD, and A/B testing in production
AWS experience (EKS, S3, Lambda, API Gateway) preferred
Startup experience valued; big tech backgrounds less preferred
Bachelor’s degree in Computer Science or related field preferred
Compensation & Benefits
Base salary of $150,000 - $170,000 plus equity. Comprehensive benefits include health, dental, vision, and 401(k).
How to Apply
Please express your interest by submitting your resume via the Apply link on this page.
Keywords
Mobile Engineering, Flutter, Dart, iOS, Android, Firebase, CI/CD, REST APIs, FinTech, Cross-Platform Development, AWS, Next.js, Figma, Startup, A/B Testing, Event-Driven Architecture
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Engineering and Information Technology
Industries
Financial Services and Engineering Services
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Worksite address
new york, NY, 10261, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.