Mobile Tech Lead (Flutter)

We are hiring: Mobile Tech Lead (Flutter)

We’re expanding our Mobile R&D team at On The Spot! We are looking for an experienced Tech Lead to guide the engineering team and drive the mobile architecture for Finonex — a multi-brand, high-scale online trading platform.

Warsaw (only), B2B-contract (only), English: from B2, salary range: up to $7500 gross.

What you’ll do

Provide technical leadership and mentor the mobile engineering team

Shape app architecture, code quality, and performance standards

Drive cross-platform Flutter development alongside native iOS/Android integrations

Collaborate closely with Product, QA, and Backend teams

Key requirements

Strong hands-on experience with Flutter & Dart in production

Background in iOS / Android development

Proven track record in leading engineering teams & driving architectural decisions

Deep understanding of CI/CD, mobile security, and high-scale applications

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Skills

• Flutter
• Dart
• iOS
• Android
• CI/CD