[Hiring] Flutter Engineer @Klar Technologies SA de CV SFP

Role Description

You will join Klar’s mobile development team as a Flutter Engineer working on a cross-platform codebase that powers multiple apps across Android, iOS, and Web. This role is central to advancing Klar’s mobile experience and scaling.

You will work closely with designers, product managers, and backend engineers to deliver a secure, responsive, and delightful experience for users across platforms. This is a great opportunity to shape high-performance mobile and web applications with deep integrations across the product, analytics, and infrastructure stack.

We expect engineers to use AI as an integral part of the development workflow and to continuously improve how agents, tools, and automation are used to increase engineering quality and velocity.

The role is fully remote from EU.

Here are some development practices we follow, to give you an idea of how we work:

• Monorepo with few apps and 400+ modules
• Feature-based modular design
• Comprehensive testing experience (unit, widget, integration, E2E tests)
• Git workflow proficiency with branch management and PR processes
• Code quality tools and static analysis
• Continuous Integration and Continuous Delivery
• Custom Gherkin-like testing framework
• Automated screenshot testing
• E2E test automation

Qualifications

• 5+ years of Flutter development experience
• Strong Dart programming fundamentals
• Experience with complex state management in large applications
• API integration and data handling expertise
• Testing mindset with experience in multiple testing approaches
• Problem-solving abilities for complex technical challenges
• Code quality focus with clean, maintainable code practices
• Team collaboration in code reviews and technical discussions
• Learning agility to adapt to new technologies and frameworks

Requirements

• Flutter & Dart Expertise
• Flutter 3.27.3+ and Dart 3.10.0+ proficiency
• Strong experience with BLoC pattern and Cubit for state management
• Understanding of clean architecture principles
• Performance optimization and monitoring
• Strong understanding of AI coding agents and agent harnesses, including context management, tool use, planning/execution loops, and permissions.
• Ability to set up, configure, and tune coding agents for large codebases using project instructions, rules, skills, tools, and reusable workflows.
• Experience using AI effectively across the software development lifecycle: exploration, implementation, refactoring, testing, debugging, code review, and documentation.
• Ability to design AI workflows that produce reliable, repeatable results rather than relying on one-off prompts.

Valuable Experience

• Flutter for Web development
• Firebase integration (Analytics, Crashlytics, Performance, Auth, Remote Config, etc)
• CI/CD understanding (GitHub Actions preferred)
• Monorepo management with tools like Melos
• Custom UI components and design system implementation
• Platform-specific integrations (biometrics, deep linking, push notifications)
• Payment systems integration (3DS, wallet providers)
• Marketing Platforms (AppsFlyer, Meta Pixel, Google Tag Manager)
• Security implementations (cryptography, MFA, secure storage)
• Familiarity with BigQuery
• Web development background
• Native Mobile development background
• Building custom agents, subagents, or reusable AI skills/workflows.
• MCP or similar tool-integration protocols.
• Creating repository-level AI conventions and shared agent configurations.
• Evaluating agent performance across different models and workflows.

Benefits

• Competitive salary based on performance and experience
• Chance of earning Klar stock options
• 26 days of paid vacation per year
• Computer devices
• Wellhub subscription to offer mental and physical health
• Sponsored coaching and therapy sessions via Mantra Care
• International work environment with amazing and highly skilled people
• A world class team that helps you evolve your skills in areas you're interested in