Founding Engineer - Agentic coder (60K€-100K€)

Joppy; Barcelona; On-site; EUR 70,000 - 100,000; Full time

Job summary

Joppy is seeking a hands-on technical leader to architect an enterprise AI interviewing platform in Barcelona. The role requires 3+ years of experience in technical leadership, focusing on client-specific needs while ensuring speed and compliance.

The ideal candidate will have advanced expertise with AI agents and a strong understanding of production systems. This position offers an opportunity to significantly impact product quality and reliability while working in a collaborative environment.

Qualifications

• 3+ years in a technical leadership role such as Tech Lead or Principal Engineer.
• Experience with enterprise product development.
• Proficiency in production systems and integrations.

Responsibilities

• Develop an AI interviewing platform tailored to client needs.
• Transform specific requirements into reusable features.
• Design technical frameworks for rapid iteration and safe releases.
• Integrate compliance and modular architecture as core components.
• Use AI agents to enhance various development processes.
• Lead architecture and product decisions.

Skills

Technical ownership

AI-native development workflows

Product intuition

Reliability and compliance

Tools

Claude Code

Codex

Job description

We’re looking for a hands‑on technical leader to architect and build a robust, scalable enterprise AI interviewing platform for one of our clients, that balances speed, compliance, and customizability while remaining AI-agent-native from the start.

Responsibilities

• Develop an enterprise AI interviewing platform that absorbs client-specific needs without sacrificing development speed or fragmenting the product.
• Transform individual client requirements into reusable platform features—avoiding per-client hacks and parallel product branches.
• Design a technical foundation that supports rapid, confident iteration with critical flow testing, effective observability, safe releases, and proactive error surfacing.
• Integrate compliance, modular architecture, and scalable integrations as core components of the system, not add‑ons.
• Use AI agents to enhance development, QA, debugging, triage, incident response, documentation, and refactoring.
• Reduce the time from detecting production issues to deploying fixes through improved feedback loops, tooling, and operations.
• Provide hands‑on technical leadership, driving architecture, infrastructure, and product decisions with a platform‑focused mindset.
• Approach custom requests, complexity, and bugs with a focus on abstractions, foundational primitives, and operational reliability.

Qualifications

• 3+ years as a Tech Lead, Principal Engineer, Head of Engineering, or in a similar technical ownership role at CTO level.
• Proven experience building products for enterprise clients.
• Experience in production systems, reliability, integrations, security, or compliance.
• Advanced expertise with AI agents, large language models (LLMs), and AI-native development workflows.
• Exceptional agentic coding ability, including expertise with Claude Code, Codex, or similar.
• Strong product intuition, considering flows, edge cases, error states, and acceptance criteria.
• Demonstrated obsession with production quality.