Forward Deployed Engineer, French Speaking

Lully; Barcelona; On-site; EUR 70,000 - 110,000; Full time

Job summary

Jobtailor is seeking a driven full-stack engineer to work closely with customers from onboarding through ongoing usage, helping them integrate and optimize our AI solutions.

You will build new features and scalable tools using React, TypeScript, Node.js, and Python, while designing AI/ML applications and refining LLM prompts to improve outcomes. Collaboration with Product, Engineering, and Customer Success is essential.

Qualifications

• Strong full-stack experience with React, TypeScript, and Node.js.
• Hands-on proficiency in Python.
• Experience building AI/ML applications, including LLM prompting and tuning.
• Ability to manage APIs and integrate with third-party systems.
• Excellent communication skills to explain technical concepts to non-technical stakeholders.
• Proven ability to prioritize and manage multiple projects under tight deadlines.
• Founder mindset: highly independent, takes ownership, and thrives in a fast-paced environment.

Responsibilities

• Customer-Facing Engineering – work with customers from onboarding to ongoing usage.
• Technical Development – build features, MVPs, and scalable solutions.
• Full-Stack Development – use React, TypeScript, Node.js, Python.
• AI/ML Applications – design, implement, and iterate on AI/ML solutions, including LLM prompting, tuning of voices, and transcribers.
• Integration & APIs – manage APIs and integrations with third-party systems.
• Cross-Functional Collaboration – partner with Product, Engineering, and Customer Success teams.
• Iterative Problem-Solving – iterate on AI solutions based on feedback.
• Project Management – prioritize and manage multiple projects under deadlines.

Skills

React

TypeScript

Node.js

Python

LLM prompting

AI/ML applications

API integrations

Communication skills

Project management

Founder mindset

Tools

REST APIs

Third-party integrations

Job description

Responsibilities

• Customer-Facing Engineering – Work closely with customers from onboarding to ongoing usage, helping them integrate and optimize our AI solutions.
• Technical Development – Build new features, MVPs, and scalable solutions that directly impact customer outcomes.
• Full-Stack Development – Utilize React, TypeScript, Node.js, and Python to develop robust applications and tools.
• AI/ML Applications – Design, implement, and iterate on AI/ML solutions, including LLM prompting, tuning of voices, and transcribers to optimize use cases.
• Integration & APIs – Manage APIs and integrations with third-party systems to ensure seamless functionality for customers.
• Cross-Functional Collaboration – Partner with Product, Engineering, and Customer Success teams to deliver tailored solutions.
• Iterative Problem-Solving – Continuously iterate and improve AI solutions based on customer feedback and evolving requirements.
• Project Management – Prioritize and manage multiple projects under tight deadlines while maintaining high-quality results.

Requirements

• Strong full-stack experience: React, TypeScript, Node.js.
• Hands-on proficiency in Python.
• Experience building AI/ML applications, including LLM prompting and tuning.
• Ability to manage APIs and integrate with third-party systems.
• Excellent communication skills with the ability to explain technical concepts to non-technical stakeholders.
• Proven ability to prioritize and manage multiple projects under tight deadlines.
• Founder mindset: highly independent, takes ownership, and thrives in a fast-paced environment.