AI Engineer

Location: Barcelona, Spain; hybrid setup with regular collaboration at the Barcelona office

Company

hirify.global is a profitable, bootstrapped AI company building a multilingual transcription platform and new conversation-intelligence products.

What you will do

• Own AI features end-to-end, from problem discovery and prompt design through production, including summaries, search, actions, and memory.
• Build and maintain evaluation frameworks that detect quality regressions and support confident prompt iteration.
• Optimize AI infrastructure for speed, cost, and reliability through provider routing, caching, chunking, and latency management.
• Evaluate new models and techniques, deciding when migrations are worth the cost.
• Collaborate with product designers and engineers to integrate AI features into the product.
• Build semantic transcript search, agentic workflows for meeting follow-ups, and prompt evaluation pipelines.

Requirements

• 5+ years of engineering experience, including 2+ years focused on AI applications.
• Experience shipping LLM-based features to production for real users.
• Fluency in prompt engineering, RAG architectures, and evaluation frameworks.
• Experience debugging retrieval quality and hallucinating prompts.
• Ability to make trade-offs between latency, quality, cost, capability, speed of delivery, and technical debt.
• Product-minded approach focused on solving user problems and discontinuing ineffective features.
• Alignment with the company’s engineering principles and most of the Rails doctrine.

Nice to have

• Experience shipping AI features in B2B SaaS where reliability and accuracy are important.
• Experience building multi-provider LLM systems with fallbacks, routing, and cost optimization.
• Experience designing retrieval systems at scale, including embeddings, reranking, and hybrid search.
• Experience with speech or audio AI, such as transcription, diarization, or real-time processing.

Culture & Benefits

• Trust-based culture with autonomy and independence.
• Hybrid work with a Barcelona office in Gràcia, flexible working hours, and protected focus time.
• International, English-fluent working environment.
• Competitive salary positioned in the top percentiles of the Barcelona startup scene and equity.
• Generous AI token spending policy, 30 days of holiday allowance, and health coverage through Alan covering half of medical insurance.
• Tax-smart savings through Cobee by Pluxee for meals, transport, and nursery expenses.