> Markdown version of [/jobs/ext/2013089-senior-python-engineer](https://www.wearedevelopers.com/jobs/ext/2013089-senior-python-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Python Engineer - **Company:** Plexus Tech - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Testing (Software), Artificial Intelligence, Amazon Web Services, Code Review, DevOps, Github, Python (Programming Language), Mockito, Test-Driven Development (TDD), Multi-Agent Systems, AWS Lambda, Backend, Pytest, Gitlab-ci, Virtual Agents, Asynchronous Programming, Api Gateway, Serverless Computing - **Published:** August 10, 2026 - **Apply:** https://www.buscojobs.com.es/senior-python-engineer-en-madrid-ID-366280256 ## About the Role AI Agents (Specialized Plus): Experience or knowledge of protocols such as MCP (Model Context Protocol) and A2A (Agent-to-Agent). ## Description Overview Join Plexus Tech.We are currently looking for a Senior Python Architect/Developer to design and deploy architectures based on AI Agents and serverless solutions on AWS, ensuring the highest quality standards through advanced testing.Responsibilities AI Agent Development: Design and implement multi-agent systems using frameworks such as LangGraph, ADK, and OpenAI Agents SDK.AWS Architecture: Deploy and optimize solutions using services such as AWS Lambda, API Gateway, and Amazon Bedrock AgentCore.Quality Testing: Develop unit, integration, and end-to-end tests using Pytest.Mentorship: Participate in code reviews and guide junior/mid-level developers in backend and cloud best practices.Required Technical Profile Strong proficiency in Python (Senior level).Solid experience (5+ years) with modern Python (typing, asynchronous programming with asyncio).Testing DevOps: Test-first mindset with advanced experience in Pytest and mocking.Experience with CI/CD pipelines (GitHub Actions, GitLab CI).AI Agents (Specialized Plus): Experience or knowledge of protocols such as MCP (Model Context Protocol) and A2A (Agent-to-Agent).Benefits With our hybrid model, Flexology allows you to work where your talent flows best: from any of our 24 offices across Spain, from home, or combining both.The Plexus Tech work ecosystem fosters a collaborative environment across the company.Work with top-tier professionals Access to continuous learning and training Career growth opportunities Flexible compensation (health insurance, meal vouchers, childcare, transport) Python, LangGraph, ADK, OpenAI Agents SDK, AWS Lambda, API Gateway #J-*****-Ljbffr ## Related Videos - [AI Agents & Agentic AI](https://www.wearedevelopers.com/videos/2017-ai-agents-agentic-ai) - [pytest: Simple, rapid and fun testing with Python](https://www.wearedevelopers.com/videos/213-pytest-simple-rapid-and-fun-testing-with-python) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Automagic Configuration in Python](https://www.wearedevelopers.com/videos/363-automagic-configuration-in-python) - [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models) ## Related Articles - [What is Agentic Programming and Why Should Developers Care?](https://www.wearedevelopers.com/magazine/625-what-is-agentic-programming-and-why-should-developers-care) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this) - [From Prototype to Production: Build AI Agents with This Free 4-Course Learning Path](https://www.wearedevelopers.com/magazine/655-from-prototype-to-production-build-ai-agents-with-this-free-4-course-learning-path) - [The 13 Best Python Libraries for Developers in 2025](https://www.wearedevelopers.com/magazine/371-the-13-best-python-libraries-for-developers-in-2025)