Senior Mobile Engineer (Android/Kotlin)
About Outside Hire
Outside Hire is a growing outsourcing company with over 75 employees, building custom products and solutions for our clients. We're dynamic, fast-paced, and always evolving!
https://outsidehire.com/about/
About the Role
We're building a next-generation mobile financial services platform that enables instant money transfers, QR-based payments, bill settlements, and merchant transactions—all from a mobile device. This is a greenfield mobile application with a 20-week timeline to MVP and initial market launch. We're looking for a senior Android engineer who thrives in fast-paced fintech environments and can help us build a production-ready, secure, and scalable mobile wallet from the ground up.
Required Technical Skills
Must-Have Experience
- 8+ years of Android development with production apps in Google Play Store
- 5+ years of Kotlin with demonstrated expertise in modern Android development
- Jetpack Compose for building modern, reactive UIs
- Clean Architecture / MVVM with clear separation of concerns
- Financial/Payment Integration experience (payment gateways, card processing, digital wallets)
- Security-first mindset: Experience with encryption, secure storage, certificate pinning, biometric auth
- Local database management (Room, SQLite) with complex queries and migrations
- RESTful API integration with authentication, error handling, and retry logic
- Git version control with branching strategies and code review practices
Strongly Preferred
- Experience with Coroutines and Flow for asynchronous programming
- Push notification implementation (FCM) with deep linking
- QR code generation and scanning libraries
- Dagger/Hilt dependency injection
- JUnit, Espresso, MockK for comprehensive testing
- Experience building highly regulated applications (fintech, healthcare, government)
- PCI-DSS compliance knowledge and implementation experience
- CI/CD setup with GitHub Actions, Bitrise, or similar
- Experience with A/B testing frameworks and feature flags
- Knowledge of accessibility standards and inclusive design
Big Plus
- Previous experience building mobile wallet, payment, or banking applications
- Integration with card networks (Visa, Mastercard) or payment processors
- Experience with identity verification (IDology, Jumio, Onfido)
- Knowledge of financial regulations and compliance requirements
- Experience with AI coding tools (Claude Code, Cursor, GitHub Copilot, Codeium)
- Backend API experience (Java, .NET, Node.js, or similar) for better API collaboration
- iOS development experience (nice to have for cross-platform perspective)
The Startup DNA We're Looking For
This is not a role for engineers who:
- Need detailed specifications before starting work
- Prefer maintaining existing codebases over building greenfield
- Require close supervision or hand-holding
- Want stable, slow-moving corporate environments
- Are uncomfortable with ambiguity or rapidly changing requirements
This IS a role for engineers who:
- Self-start: You can take a PRD and run with it, asking clarifying questions but not waiting for perfect specs
- Pivot quickly: Requirements will change as we validate with users and regulators
- Think like an owner: You care about the business outcomes, not just writing code
- Move fast with quality: Speed matters, but so does security and reliability in fintech
- Embrace AI tools: You see Claude Code, Cursor, and Copilot as force multipliers, not cheating
- Communicate proactively: You flag risks early, document decisions, and keep stakeholders informed
- Have fintech battle scars: You've dealt with payment failures, fraud attempts, and compliance audits
Why OutsideHire?
- Inclusive Environment: Dynamic work environment that values creativity and collaboration
- Cutting-Edge Projects: Modern, well-architected platform with best-in-class tools
- Impact: Build systems that process real financial transactions
- Modern Stack: Quarkus, Kotlin, AWS, and AI coding assistants
- Competitive Benefits: Competitive salary, remote work, professional development
- Growth Culture: Continuous learning, innovation, and recognition
- Work-Life Balance: Semi-flexible hours, remote-first, sustainable pace
Last Updated: January 2026