Backend Software Engineer – Core AI
Goodweek
full-time
Posted on:
Location Type: Hybrid
Location: Madrid • Spain
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Tech Stack
About the role
- Shape our core AI framework and backend, taking full ownership of backend features
- Build scalable, secure and high-performance systems integrating with AI while collaborating closely with product, data and engineering teams
- Build robust backend services for AI systems (RAG, model orchestration, vector databases)
- Design scalable APIs integrating LLMs and AI workflows
- Ensure security, observability, and performance across our infrastructure
- Automate deployment pipelines, monitoring, and testing
- Participate in architecture and tech stack decisions
- Document and share technical knowledge
- Drive continuous improvement of our AI platform with innovative solutions
Requirements
- 5+ years of experience with Node.js + TypeScript stack (NestJS/React)
- Hands-on experience (or strong familiarity) with AI/ML integration (LLMs, RAG, or similar)
- Solid understanding of backend architecture, scalability, and security best practices
- Experience with databases, authentication, and cloud platforms
- Familiar with CI/CD, Git workflows, and agile methodologies
- Strong technical communication
- Agile mindset focused on product and business value
- Ability to document architectural decisions
- Balance between code quality and delivery speed
- Technical English required
Benefits
- Health insurance provided by the employer
- Flexible working hours
- Hybrid remote work
- Daily use of English through close collaboration with teams in the US and France
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Node.jsTypeScriptNestJSReactAI integrationML integrationbackend architecturescalabilitysecurity best practicesdatabases
Soft Skills
technical communicationagile mindsetdocumentationbalance between code quality and delivery speed