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Senior Software Engineer - AI Agents (Backend, LLM Systems)

Multiverse Computing • Spain
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AI Summary
Key Highlights
Own end-to-end development of AI agent systems in production.
Collaborate with cross-functional teams (ML, data, DevOps, product).
Convert project-specific solutions into reusable platform components.
Key Responsibilities
Design and implement production-grade AI agent systems (orchestration, tool integration, retrieval, memory, evaluation, deployment).
Build robust backend services, APIs, and connectors for LLM-powered applications.
Develop agent workflows with tool use, state management, human-in-the-loop steps, and multi-step execution.
Implement retrieval and knowledge-grounding capabilities (RAG pipelines, SQL-based agents, web search, reranking).
Define and implement evaluation strategies using datasets, golden tests, and production feedback.
Ensure reliable and observable execution flows with validation, retries, fallbacks, tracing, logging, and alerting.
Optimize latency, scalability, and cost through caching, concurrency, and efficient context management.
Implement security and safety controls (permissions, input/output validation, sensitive-data handling).
Convert project-specific implementations into reusable components and shared platform capabilities.
Collaborate with customers, ML engineers, data engineers, and DevOps teams to clarify requirements and deliver solutions.
Contribute to technical direction through design documents, code reviews, and mentoring.

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Technical Skills Required
Python Backend Systems (APIs, Databases, Cloud) LLM/AI Agent Orchestration

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Benefits & Perks
Indefinite contract
Equal pay guaranteed
Variable performance bonus
Signing bonus
Private health insurance
Flexible remuneration (hospitality/transport)
Educational budget
Hybrid work opportunity
Flexible working hours
Language classes and discounted lunch options

Job Description

Multiverse Computing is the largest quantum software company in the EU and a recognized AI leader. We seek a Senior Software Engineer with 5+ years of experience in backend systems and AI/ML to own the design and implementation of production-grade agentic systems.

In this role, you will:

Want the full job description? Read the complete details on multiversecomputing.teamtailor.com, the original posting.
Continue on multiversecomputing.teamtailor.com

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Job Overview
Posted Nov 10, 2026
Employment Full-time
Experience Mid-Senior level
Location Spain
Category Programming
Company Multiverse Computing
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