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Lead Software Engineer – AI Product Development (Data)

Spain - Barcelona💼 Full-time🗓 2026-05-14 → 2026-07-31

Core

Lead Software Engineer building scalable AI-powered software, LLM-based applications, and data pipelines for LS&H products.

Role type

Lead Software Engineer (AI Product Development)

Builds

Cloud-native AI services, microservices, ETL pipelines, and LLM-driven applications

Domain

AI/ML, Cloud Infrastructure, Data Engineering

Deliverable

production ML models | product features | infrastructure

Required skills

Python backend engineering, cloud ecosystem expertise (Azure/AWS), data engineering, LLM/agentic AI development, system architecture design, cross-functional collaboration

Preferred skills

software architecture definition, AI/ML workflows (RAG, vector DBs), technical mentoring, multi-language integration (Java/TypeScript)

Technologies

Python, Azure, AWS, microservices, LLMs, vector databases

Responsibilities

Scoping and shaping AI platform initiatives, designing and maintaining backend services/APIs, translating requirements into code and PoCs, collaborating with Cloud Ops and Product teams, building and iterating LLM applications, leading technical approach from design to implementation, testing and validating solutions

Seniority

Lead, hands-on IC with mentorship responsibilities

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