Unlimit6mo ago

Agentic Systems Engineer (Flutter)

BelgradeFull-Timemid

Mobile DevelopmentSystems EngineerInfrastructure & Cloud

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Quick Summary

Overview

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,

Technical Tools

Mobile DevelopmentSystems EngineerInfrastructure & Cloud

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.

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

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

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

Location & Eligibility

Where is the job

Belgrade

On-site at the office

Who can apply

Same as job location

Listed under

Worldwide

Listing Details

Posted: October 23, 2025
First seen: March 26, 2026
Last seen: April 30, 2026

Posting Health

Days active: 35
Repost count: 0
Trust Level: 31%
Scored at: April 30, 2026

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Unlimit

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Unlimit is a global fintech company offering comprehensive payment solutions to businesses, enabling them to expand and optimize their payment processes.

Employees

350

Founded

2009

Domain

Jobs

External application · ~5 min on Unlimit's site

Please let Unlimit know you found this job on Jobera.