AI Engineer - Remote (Europe)

Reflow
Barcelona, Spain
2 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Compensation
€ 160K

Job location

Remote
Barcelona, Spain

Tech stack

Artificial Intelligence
Databases
Iterative and Incremental Development
Python
Web Applications
Large Language Models
Prompt Engineering
Api Design

Job description

We're building Reflow, a workforce and workflow intelligence platform that helps teams understand and improve how work gets done. A key part of that vision is Reflow AI, agentic, automation-focused intelligence that adapts to how people actually work. We're looking for an AI developer who can experiment fast, optimize intelligently, and help us push the boundaries of AI-assisted performance., * Develop, optimize, and maintain agentic AI pipelines for automation and workflow intelligence.

  • Experiment with prompt engineering, context tuning, and model orchestration to improve performance and adaptability.
  • Work with vector databases, RAG (retrieval-augmented generation), and related frameworks for contextual intelligence.
  • Collaborate with engineers and product teams to integrate AI systems into real-world workflows.
  • Continuously refine and improve models through experimentation, data feedback, and iterative development.

Requirements

Do you have experience in Python?, * Strong foundation in Python, LLMs, and agentic architectures.

  • Experienced in prompt engineering, context optimization, and AI pipeline design.
  • Comfortable building fast prototypes and testing model behavior in varied, complex contexts.
  • Curious, pragmatic, and unafraid to experiment, you turn uncertainty into working systems.

Bonus points

  • Experience integrating AI into desktop or web apps.
  • Familiarity with LangChain, OpenAI API, or similar frameworks.
  • Background in automation systems, workflow optimization, or enterprise AI tools.

Why join

You'll help shape the intelligence core of Reflow, the layer that learns from work patterns and turns data into action. You'll work across experiments, prototypes, and production systems, collaborating directly with founders and engineers. Ideal for someone who loves to push AI beyond the theoretical into the real.

We're flexible on structure (part or full-time). What matters is iteration speed, creativity, and a bias for working code.

Apply for this position