Flutter Engineer (Remote from EU only)

About Klar
We're turning one of the world's largest underbanked markets into something fairer, simpler, and more transparent. 7 million users served since 2019. Uber's first global credit card, built right here in Mexico and Berlin. Klar Empresarial, a brand-new B2B solution bringing agile credit and smart accounts to SMEs who've been ignored by traditional banks for too long.
And a full banking license on the horizon, because our customers asked for it and we listened.
We move fast, we think big, and we go all in, because as our CEO puts it: "Growing doesn't always mean going further. Sometimes it means going deeper."
Behind all of it is a team of 30+ nationalities, working across Mexico City, Berlin, and Argentina, obsessed with building financial products that are simpler, faster, and fairer than anything that came before.
This is Klar, and we're seeking the people who'll write the next chapter.
Our people
If you join us at Klar, you’ll be welcomed to a team that is rich in many talents and we are very proud! With our head office in Mexico City, and remote tech hubs in Berlin and Argentina, we are always learning something new about another culture or language. With so many people from different backgrounds and walks of life (young professionals, parents, LGBTQ+, neurodivergence), you’ll definitely find your people here!
Our values
Ownership - We own our successes & our failures as a team.
Excellence - We do everything to the best of our ability & always seek to achieve a new level of excellence in our work.
Inclusion - We believe we are stronger together and actively work to promote a safe, diverse, inclusive, and respectful culture.
Customer Obsession - We understand the value Klar can bring to its customers & it’s always at the forefront of our decisions.
Klarity - We communicate clearly & with authenticity. It’s in our name & it’s what we do.
About the role
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
What we are looking for:
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
Core Technical 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

Employment type
Full-Time

Work arrangement
Yes