Senior Flutter Web Developer (m/f/d)

Cyber Insight GmbH; Leipzig; Vor Ort; Vertraulich; Vollzeit

Zusammenfassung

A forward-thinking tech company in Leipzig is seeking a Senior Flutter Web Developer to build high-performance, secure web applications. Ideal candidates will have extensive experience with Flutter and a strong understanding of web security practices. The role includes designing and maintaining applications, collaborating with various teams, and ensuring optimal performance. Enjoy flexible working hours and the opportunity to work on impactful projects in IT security and risk management.

Leistungen

Flexible working hours

Competitive salary and benefits

Strong engineering culture

Qualifikationen

• Several years of professional experience with Flutter, including Flutter Web.
• Strong understanding of Flutter rendering and performance optimization.
• Experience with security concepts like OAuth, OpenID Connect, JWT.

Aufgaben

• Design, develop, and maintain high-performance Flutter web applications.
• Define and enforce clean architecture patterns with a focus on BLoC.
• Implement security-focused frontend solutions.

Kenntnisse

Flutter

BLoC / Cubit

Web security concepts

REST APIs

GraphQL APIs

Unit testing

Integration testing

Widget testing

Jobbeschreibung

Overview

At Cyber Insight, we are building the next generation of AI-driven platforms for IT security and risk management. Our mission is to empower companies to gain deep insights into their IT landscapes and proactively mitigate risks in an increasingly complex digital world.

To support this mission, we are looking for a Senior Flutter Web Developer who is passionate about building secure, high-performance web applications and enjoys working on products where security, scalability, and reliability truly matter.

Responsibilities

Your Responsibilities

• Design, develop, and maintain high-performance Flutter web applications
• Define and enforce clean architecture patterns, with a strong focus on BLoC
• Build scalable, testable, and maintainable state management solutions
• Optimize rendering, bundle size, load times, and runtime performance
• Implement security-focused frontend solutions (authentication, authorization, secure storage, API protection)
• Collaborate closely with backend, AI, product, and UX teams
• Review code, mentor team members, and contribute to technical standards
• Proactively identify technical risks, security issues, and performance bottlenecks

Requirements

• Several years of professional experience with Flutter, including Flutter Web. Deep, hands-on expertise with BLoC / Cubit and event-driven architectures
• Strong understanding of Flutter rendering, widget lifecycle, and performance optimization
• Solid experience with web security concepts, such as:

1. OAuth / OpenID Connect / JWT-based authentication
2. Secure API communication
3. Protection against XSS, CSRF, and common web vulnerabilities

• Experience designing scalable frontend architectures
• Confident working with REST and/or GraphQL APIs
• Strong testing mindset (unit, widget, and integration tests)
• Ability to take technical ownership and make architectural decisions

Nice to Have

• Experience with security, compliance, or risk management platforms
• CI/CD experience for Flutter web
• Familiarity with performance monitoring and profiling tools
• Open-source contributions in the Flutter ecosystem
• Experience with accessibility and internationalization

Benefits

• Work on a product with real impact in IT security and risk management
• High degree of technical ownership and influence
• Challenging problems at the intersection of AI, security, and frontend engineering
• Flexible working hours
• Competitive salary and benefits
• A strong engineering culture focused on quality and collaboration

We are looking forward to meet you!