OSF Digital
AI Backend Developer | Python, Java & AWS
Skills
20 days ago
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Important information
Contract type:
Permanent
Location:
7300 Portalegre, Portugal
Work mode:
Onsite
Published on:
29 September 2026
What they need
🚀 Are you passionate about building AI solutions and distributed systems?
We’re looking for an AI Agent & Full-Stack Engineer to design and build AI agents, RAG solutions, and cloud-native services. You’ll work across the development lifecycle—from agent orchestration and model integrations to backend services, user interfaces, and cloud deployment.
What you’ll do
- Design and build AI agents, agent loops, tools, and orchestration workflows.
- Develop RAG solutions using effective chunking strategies, metadata filtering, and controlled vocabularies.
- Implement prompt engineering, versioning, evaluation, and model reasoning frameworks.
- Build APIs and integrations following OpenAPI standards.
- Design event-driven backend services using Java, Spring Boot, Kafka, and MongoDB.
- Develop operational dashboards and user interfaces with React and TypeScript.
- Build and deploy cloud-native solutions on AWS and Kubernetes.
What we’re looking for
AI and agent engineering
- Strong Python skills, including asyncio and asynchronous programming.
- Experience with agent architectures, agent loops, tool design, and orchestration.
- Knowledge of MCP (Model Context Protocol), RAG, prompt engineering, and evaluation.
- Familiarity with OpenAI and/or Anthropic frameworks and best practices.
- Knowledge of AWS Bedrock, AgentCore, and orchestration frameworks such as Strands.
Backend and distributed systems
- Strong experience with Java 17+ and Spring Boot.
- Experience with MongoDB, including document modeling, transactions, and change streams.
- Experience with Kafka, including partitioning, consumer groups, dead-letter queues (DLQs), and delivery guarantees.
- Understanding of event-driven architectures and distributed systems patterns
Frontend and cloud
- Experience with React and TypeScript.
- Familiarity with Kubernetes and AWS cloud services.
Nice to have
- Experience building enterprise AI platforms or agent-based applications.
- A strong understanding of consistency and reliability patterns in distributed systems.
Interested in combining AI, full-stack development, and distributed architecture to build innovative solutions? We’d love to hear from you!
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