Agentic Systems Engineer (Flutter)

About Unlimit   Unlimit is a global fintech ecosystem built to eliminate financial borders holding businesses back. The company provides the extensive infrastructure needed to scale globally, integrating payment processing, multi-currency business accounts, BaaS and crypto gateways into a single, intelligent platform.   Across 17 offices globally, Unlimit bridges hyper-local expertise with a high-capacity financial network, giving companies the agility to expand across regions with operational confidence and speed. Driving the evolution of payments, Unlimit is transforming its infrastructure from human-operated fintech into AI-native financial infrastructure — where APIs are consumed by machines, integrations are negotiated by agents, and systems evolve continuously through intelligent automation. Our next users are not only humans. They are AI agents acting on behalf of humans and businesses.   Unlimit serves more than the needs of businesses today; we are building the nervous system for a borderless global economy.

We are looking for an experienced Senior Flutter Developer to join our product team and build a brand-new B2B banking application for the European and Asian markets.

Your role

will be crucial in expanding functionality, and ensuring high product quality from day one.   We are looking for a Senior AI Agent Engineer with deep Flutter expertise to design and build the agentic backend layer powering Unlimit’s global financial platform. You will not just write backend services. You will design AI agents that generate, operate, validate, monitor, and evolve backend services. This role is for engineers who understand that the future of software is Human + AI co-creation, and soon — AI-to-AI collaboration.

What You'll Be Doing: Develop, plan and launch new features for our clients Automate development using AI tools and create AI Agents Participate in the Code Review process Use modern approaches, AI tools and technologies Interact with designers, project and product managers, developers, analysts and testers     Tech Stack: Flutter + Dart  (null safety) Modular and clean architecture State management : Bloc (Cubit) Navigation : go_router Integrations:  Firebase, APNS, Sentry Network:  REST API, WebSocket Native code : platform channels, custom plugin development with Kotlin and Swift as needed CI/CD : Fastlane, GitLab CI Qualifications You Bring: 4+ years of experience in mobile application development using Flutter  Strong knowledge of Dart programming language and Flutter framework Strong AI-driven mindset and curiosity about emerging AI technologies. Hands-on experience using AI tools (e.g., LLMs, automation frameworks, AI-assisted development tools) to enhance productivity or system performance.  Experience with integrating third-party libraries and APIs into mobile applications  Strong understanding of software development principles, design patterns, and best practices  Excellent problem-solving, analytical, and communication skills  Ability to work independently and as part of a team in a fast-paced environment