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# Principal Software Engineer

- **Company:** Ai-driven
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Amazon Web Services, Continuous Integration, Cursor (Graphical User Interface Elements), Internet Recruiting, Python (Programming Language), SQL Databases, Systems Integration, TypeScript, AI Infrastructure, ReactJS, Large Language Models, Multi-Agent Systems, Docker, Golang
- **Published:** July 1, 2026
- **Apply:** https://www.jobleads.com/es/job/e2a02b8a5b6dca4f5796ea2d80db53efd

## About the Role

* +5-7 years of production experience with modern web stack
 * Production experience with Python, TypeScript, JavaScript or GoLang
 * Experience with AI coding agents such as Claude Code, Cursor or Codex
 * Real product mindset and ability to work autonomously
 * Comfortable with Docker, SQL, testing and scalable architecture
 * Fluent Spanish and English

Nice to have

 * Experience with LLMs, STT/TTS, OpenAI, Whisper, ElevenLabs or Deepgram
 * Experience with LangChain, LangGraph or similar AI orchestration tools
 * AWS/GCP, CI/CD and observability experience
 * Startup or early-stage product company experience
 * Previous experience leading a team or acting as a principal

## Description

* Building scalable APIs and services for real-time voice interactions
 * Developing product features end-to-end with React, TypeScript and AI infrastructure
 * Integrating LLM, STT and TTS workflows into production
 * Working on agentic and multi-agent workflows
 * Improving architecture, observability, testing and engineering quality
 * Working directly with the founders and senior team to shape the platform


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- [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs)
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- [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered)
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- [Bringing the power of AI to your application.](https://www.wearedevelopers.com/videos/1010-bringing-the-power-of-ai-to-your-application)

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