1 year ago
Belgrade, SerbiaSenior
Responsibilities
- Design and implement AI agents that build, refactor, test, validate, and optimize Java and Kotlin backend services.
- Architect self-describing, agent-consumable APIs and modular, observable, introspectable microservices.
- Build validation pipelines that enforce PCI-DSS rules, regulatory constraints, scalability requirements, and architectural standards.
- Develop autonomous monitoring agents that detect anomalies, diagnose root causes, and trigger corrective production workflows.
- Design guardrails including policy enforcement, compliance checks, circuit breakers, and architectural constraints for autonomous systems.
- Collaborate with DevOps, Data, AI, engineering, compliance, and product teams to coordinate a multi-agent ecosystem.
Requirements
- At least 4 years of production experience with Java using Spring or Spring Boot, or Kotlin.
- Proven experience integrating LLMs, MCP servers, and multi-agent systems into production-oriented engineering workflows.
- Hands-on experience with frontier models such as Claude Opus 4.x or GPT-5.x Codex for reasoning, code generation, validation, orchestration, and system design.
- Strong understanding of context engineering, token economics, prompt architecture, reusable memory, RAG, persistent state, and long-horizon agent workflows.
- Ability to design stable and safe autonomous-system guardrails, validation layers, policy enforcement, compliance checks, circuit breakers, and architectural constraints.
- Deep understanding of distributed systems and scalable backend architectures in high-throughput, low-latency environments.
- Experience designing resilient microservices for financial-grade reliability and regulatory requirements.
- Strong communication skills for collaboration across engineering, data, compliance, and product teams.
- Experience in fintech, payments, or banking systems is preferred.
- Experience with AWS services and infrastructure is preferred.
- Familiarity with Docker, Kubernetes, and CI/CD pipelines is preferred.
- Background in event-driven and message-based systems such as Kafka and RabbitMQ is preferred.
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.