Complete Robot Agent AI Engineer Zaragoza, Spain

About Complete Robot

We are an early-stage venture-backed company currently operating out of San Francisco building AI-enabled systems for automated physical environments.

The company works at the intersection of AI agents connected devices user experience machine data and real-world commercial operations. Complete Robot Inc. was founded by Tomasz Stańczak founder of Nethermind and former Co-Executive Director of the Ethereum Foundation.

To learn more about the company vision and the technology were building visit the Complete Robot website.

About this role:

We are looking for an Agent / AI Engineer to build AI workflows that interact with real-world systems data users and operational tools.

This is a production AI role not a generic chatbot role. The systems must be useful reliable measurable safe and connected to real products and real environments.

For candidates who can start immediately there may be an opportunity to join the founding team in San Francisco stay with the team and build together from a prestigious San Francisco accelerator environment. This is subject to availability travel and visa requirements role fit and mutual agreement.

Responsibilities:

• Build AI agents and workflows for customer-facing and operator-facing use cases.

• Design tool-use patterns that allow AI systems to interact safely with backend systems and device data.

• Build retrieval structured outputs evaluations prompts guardrails monitoring and fallback behavior.

• Work with product and design to create trustworthy AI user experiences.

• Work with backend and edge engineers to connect AI workflows to real system data.

• Measure AI performance in terms of task completion accuracy safety user experience and commercial value.

• Support demos pilots and iteration based on customer feedback.

Requirements:

• Experience building AI LLM agentic conversational recommendation or automation systems.

• Strong programming ability in Python TypeScript or similar.

• Experience with LLM APIs tool calling retrieval structured outputs evaluations and production AI workflows.

• Understanding of prompt engineering RAG agent orchestration AI evaluation and common AI failure modes.

• Ability to build systems that are reliable useful and maintainable.

• English fluency required.

Must Haves:

• Experience with AI agents for commerce customer support retail payments kiosks robotics voice interfaces or physical-world systems.

• Experience with personalization recommendations or conversational UX.

• Experience with permissioning user authentication transaction approval or safety-critical workflows.

• Experience with multilingual AI systems.

• Experience with speech audio multimodal AI or on-device AI.

Success in the first 90 days:

• You build the first working AI workflow for a product demo.

• You connect AI workflows to relevant data and safe system actions.

• You create an evaluation framework for usefulness accuracy and safety.

• You help produce compelling demos for partners and investors.

Success in the first 6-12 months:

• AI workflows are running in real pilot environments.

• The AI layer has guardrails evaluation monitoring and measurable value.

• You become a key owner of the companys AI systems.

Important Notice for Candidates

Recruitment scams are becoming increasingly common. Please keep the following guidelines in mind when applying for roles at Nethermind.

Where We May Contact You

Our Recruitment Team will only contact candidates using official company email addresses ending in @.
Any communication from our Team will always come from an official company domain never from Gmail Yahoo Hotmail Outlook or any other free email service.
You can also find us only through our official Nethermind accounts on:

• LinkedIn

• X / Twitter

• GitHub

Please note that we do not use Facebook for recruitment outreach.

How We Conduct Interviews

All interview scheduling and recruitment communication is managed exclusively through Ashby our official hiring platform.
You may receive scheduling emails sent via Ashby on behalf of our Recruitment Team. Before clicking any links please make sure the message originates from a legitimate and trusted Ashby source.

We do not conduct interviews through:

• WhatsApp

• Telegram

• Wire

• Google Hangouts

• Signal

• Discord DMs

• or any other unofficial messaging platforms

What We Will Never Do

Nethermind will never:

• Ask for your banking details passwords seed phrases and wallet credentials at any stage of the hiring process

• Request payments deposits or fees related to recruitment or interviews

• Contact you through unofficial email addresses or suspicious messaging accounts

• Ask you to install unknown software or share access to your devices

If you ever receive suspicious communication claiming to represent Nethermind please treat it with caution and verify the source carefully before responding.

Required Experience:

Unclear Seniority