over 1 year ago
Belgrade, SerbiaSenior
Responsibilities
- Own solution design for backend systems supporting card acquiring, wallets, crypto, and banking-as-a-service products.
- Design and maintain AI-native, cloud-agnostic architectures aligned with scalability, resilience, security, and compliance standards.
- Create architectural documentation, solution diagrams, system interface contracts, and component-level specifications.
- Contribute to API design and service decomposition efforts.
- Guide AWS-based cloud migration and infrastructure evolution using Kubernetes, GitLab CI/CD, and Terraform.
- Enable zero-downtime deployments, automated rollbacks, scalable horizontal patterns, and built-in observability.
- Conduct architectural reviews and technical assessments and collaborate with delivery teams on implementation.
- Drive architectural maturity, platform modernization, and mitigation of technical debt and long-term design risks.
Requirements
- 6+ years of experience in architecture roles, preferably in fintech or high-availability distributed systems.
- Experience designing scalable backend systems in AWS or hybrid cloud environments.
- Strong hands-on experience with Java backend development, DevOps, or cloud infrastructure.
- Deep understanding of distributed systems, event-driven architectures, microservices, CI/CD pipelines, and observability practices.
- Experience with Kubernetes, Terraform, GitLab CI/CD, Grafana, and Prometheus.
- Experience driving system design reviews across multiple teams and aligning technical and business requirements.
- Practical experience integrating AI/ML components into backend systems, including AI pipelines, agent-based integrations, or MLOps.
- Experience with AI-driven engineering practices, emerging AI technologies, LLMs, AI-assisted development tools, or automation frameworks.
- Background in financial services, payment gateways, acquiring, digital wallets, or other regulated environments.
- Strong stakeholder communication skills and comfort working in fast-paced, cross-functional, international environments.
Benefits
- Opportunity to drive AI-native backend transformation at scale across global fintech products.
- Exposure to card processing, crypto, wallets, and banking-as-a-service products.
- Collaboration with international teams in a global engineering organization with an agile mindset and flat hierarchy.
- Strong support for asynchronous, cross-timezone collaboration.
Tech Stack
Categories
About Unlimit
Unlimit builds a global payments and financial infrastructure platform for businesses, combining payment processing, acquiring, multi-currency corporate accounts, B2B cards, and crypto/digital-asset rails via APIs. It monetizes through payment acceptance and account services, and also offers Banking-as-a-Service capabilities. Founded in 2009 and headquartered in London, it is privately held, with major hubs in London, San Francisco, Singapore, São Paulo, and Mexico City.