Senior Mobile Engineer

Senior Developer – Front End

Experience: 7+ years of mobile development, including 3+ years of production Flutter

Environment: Startup / High-Growth

Work Environment: 5 days onsite, Hazlet, NJ 07730

Focus: Flutter, Mobile Architecture, Scalability & Release Management

Position Overview

We are looking for a Senior Flutter Developer to join a fast-growing technology company and play a critical role in the next stage of an established consumer-facing mobile platform.

The app is already built and in market. This person will be highly hands-on within the existing product while helping drive the architecture, scalability, and technical direction of the front-end team as the company grows.

The platform supports multiple white-labeled client applications from a shared codebase , making architecture, scalability, release management, and code quality especially important.

This is a true startup environment. We are looking for someone who is passionate, sharp, collaborative, and comfortable taking significant ownership . Strong communication skills are essential, as this person will work closely with leadership, backend teams, developers, product stakeholders, and clients.

This position is onsite 5 days per week.

What You'll Own

• Architecture & Scalability: Design and evolve an app architecture that supports multiple white-labeled clients using theming, feature flags, and configuration-driven builds.
• Flutter Development: Remain highly hands-on developing and improving an existing production Flutter application.
• Release & Platform Management: Own the end-to-end release pipeline across concurrent client builds, including TestFlight distribution, App Store Connect submissions, Google Play releases, versioning, and compliance issues.
• Third-Party Integrations: Integrate SDKs for ticketing, wallet/loyalty, payments, analytics, and real-time data feeds while isolating complexity behind clean interfaces.
• API Contracts: Partner proactively with backend engineering teams to define API contracts and ensure reliable communication between systems.
• Code Quality & Mentorship: Establish and enforce engineering standards around linting, testing strategy, architecture, and PR reviews while mentoring junior and mid-level developers.
• Performance & Reliability: Profile and resolve UI and performance issues related to real-time features such as live scores, loyalty programs, and in-venue commerce.
• Design applications for graceful degradation and reliability in challenging environments , including inconsistent venue Wi-Fi.
• Product & Client Fluency: Identify technical risks during sprint planning and comfortably explain technical decisions directly to clients.
• Help shape the structure and technical direction of a growing front-end engineering team .

What You Bring

• 7+ years of professional mobile development experience.
• 3+ years building production Flutter applications. Flutter is a MUST.
• Deep knowledge of Flutter/Dart , mobile architecture, and scalable application development.
• Proven experience architecting applications that support multiple clients, tenants, or brands from a single shared codebase .
• Deep familiarity with Apple App Store and Google Play Store release processes .
• Experience managing multiple concurrent application builds and releases.
• Production experience integrating third-party SDKs , including payments, ticketing, analytics, or similar technologies.
• Strong understanding of Flutter performance profiling and optimization .
• Experience designing scalable front-end architectures using reusable components, feature flags, theming, and configuration-driven development.
• A track record of mentoring engineers and establishing technical standards for a development team.
• Comfortable managing multiple concurrent projects and shifting priorities .
• Experience working in a fast-paced startup or high-growth environment with significant scale requirements.
• Excellent communication skills and the ability to communicate technical concepts clearly to both technical and non-technical audiences.
• Passionate about technology, product development, and building exceptional consumer experiences.
• Willing and able to work onsite 5 days per week .

Nice to Have

• React experience .
• Experience within sports, ticketing, or live-event technology .
• Familiarity with loyalty programs, digital wallets, or POS integrations .
• Experience building applications with real-time data and live-event functionality .
• Experience with automated Flutter testing frameworks such as Patrol .

Ideal Candidate

You are a senior, hands-on Flutter engineer who thinks beyond individual tickets and features . You understand how to architect a mobile platform that can support multiple clients and applications at scale, and you're comfortable owning everything from architecture and code quality to app-store releases and performance.

You thrive in a startup environment where priorities move quickly and you can have a meaningful impact. You are equally comfortable writing code, mentoring developers, making architectural decisions, and communicating directly with clients and leadership .

Most importantly, you're passionate about building great products and excited to help shape both the technology and the front-end engineering team as the company scales.