Senior Fullstack Engineer (Flutter/Dart) — Hybrid in Warsaw

Adecco (Portugal); Województwo mazowieckie; Hybrid; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Long-term employment contract

Hybrid work in Warsaw

Job summary

Adecco (Portugal) is seeking a Senior Fullstack Engineer (Flutter/Dart) for our client in Poland. The role focuses on cross‑platform development and architectural decisions, operating in a hybrid setup in Warsaw.

Qualified candidates will have 5+ years of software engineering experience, strong Flutter/Dart skills, and a background in backend services and distributed systems. English is required for international collaboration.

Qualifications

• 5+ years of related software engineering experience.
• Commercial Flutter and Dart experience.
• Backend development and service-oriented architecture.
• REST, sockets and TCP-based communication.
• Distributed systems and transactional workflows.
• Software design patterns and architecture principles.
• Event-driven architecture and state management.
• Unit, integration and UI testing.
• Frontend and backend testing frameworks.
• Software maintenance and debugging.
• Linux, Windows and mobile environments.

Responsibilities

• Research and recommend software designs and alternative strategies.
• Develop and maintain cross-platform applications and related services.
• Translate customer requirements into practical technical solutions.
• Lead critical design reviews and contribute to project estimates.
• Act as a technical resource across different areas of the system.
• Train and mentor junior Software Engineers.

Skills

Flutter

Dart

Backend development

REST API

Sockets

TCP

Distributed systems

Testing

Linux/Windows

English

Education

Bachelor's degree in Computer Science or Engineering

Tools

REST API

Sockets

TCP

Job description

Adecco (Portugal) is seeking a Senior Fullstack Engineer (Flutter/Dart) for our client in Poland. The role focuses on cross‑platform development and architectural decisions, operating in a hybrid setup in Warsaw.

Qualified candidates will have 5+ years of software engineering experience, strong Flutter/Dart skills, and a background in backend services and distributed systems. English is required for international collaboration.