Senior Flutter Developer (Freelance)

A freelance Senior Flutter Developer role focused on building cross-platform apps that communicate with hardware peripherals over BLE, with potential for permanent employment.

Location: Remote (EU)

Salary: 90-180 PLN/h net B2B

Responsibilities

• Build and maintain Flutter apps that communicate with hardware peripherals over BLE
• Make cross-platform code that behaves well on both iOS and Android
• Take part in specifying, planning, and estimating new modules and features
• Improve reliability by chasing down the issues QA finds, including the weird ones
• Review pull requests and give teammates feedback that helps
• Share what you learn: tech talks, internal docs, pair sessions, etc.
• Work side by side with firmware engineers, designers, QA, and PMs
• Use AI tools as part of your daily workflow

Requirements

• Strong commercial experience with the Flutter SDK
• Advanced Dart skills, including state management and async patterns
• Working knowledge of iOS and Android for debugging
• Hands-on BLE experience, particularly with flutter_blue_plus or similar
• English at B2+ level, written and spoken
• Problem-solving skills and high coding standards
• Initiative and team engagement

Benefits

• 90-180 PLN/h net B2B
• Flexible working hours
• Fully remote with optional office spaces in Warsaw and Gdansk
• Access to internal knowledge-sharing
• Path to permanent contract with benefits (after 3 months)

Additional Information

• During freelance period, no paid leave or medical benefits.
• First weeks include ramp-up and pairing with a technical buddy.
• Recruitment process includes application, HR call, technical interview, and feedback.