TL;DR

Large Language Models in Production: Handling 100K+ LLM calls per month
Tech Stack: Golang, Distributed Architecture, Scalability, CI/CD with precision observability
Compensation: 28K - 40K Euros + Equity
Company: Fast-growing, New York and BCN-based, VC-funded B2B AI SaaS startup
Location: On-site, office near Sagrada Familia, Barcelona

About Acai Travel

Acai Travel is transforming the travel industry with AI-driven technology. Currently in the seed stage with ~$4M raised, we’ve gained significant traction with leading brands like World Travel Inc., Globespan, kiwi.com, and lastminute.com. We’re backed by top industry veterans and have teams in New York and Barcelona.

Founded by serial entrepreneur Riccardo Vittoria (whose last venture was acquired by American Express GBT), Acai Travel is led by experienced leaders, including Pavel Pratyush (ex-Manomano, eBay) heading up Engineering.

About the Role

We are looking for a Machine Learning & Prompt Engineer who will apply machine learning principles to the design, development, and optimization of prompts used in large language models. You will treat prompt engineering like a traditional ML model, where the training parameters are pieces of text that need to be continuously evaluated, tested, and improved.

This role will require you to set up robust frameworks for evaluating prompt performance, develop training and test sets, and build out the infrastructure needed to support prompt iteration at scale. You will be the connection point between engineering, prompt managers, and domain experts, guiding the process from conception to deployment.

Key Responsibilities

Prompt Engineering Frameworks: Develop and implement a machine learning approach to prompt design, treating text parameters as you would with model weights.
Evaluation & Monitoring: Set up validation frameworks to rigorously test prompt performance and create feedback loops for continuous improvement.
Training Framework Development: Build training sets, test sets, and the necessary infrastructure to support prompt iteration and optimization.
Backend Integration: Collaborate with engineering to integrate prompts seamlessly into our production environment, focusing on distributed systems and scalability.
Production Monitoring: Implement observability practices to monitor the real-time performance of prompts and adjust them to optimize handling of 100K+ LLM calls per month.
Collaboration: Act as the bridge between engineering, product, and subject matter experts to refine prompt strategies and improve LLM responses.
Scalability Focus: Work with our tech stack (Golang, CI/CD, distributed architecture) to ensure that prompt frameworks can scale as we grow.

Minimum Qualifications

Machine Learning Expertise: Very strong understanding of ML concepts, especially in relation to optimization and model evaluation. (necessary requirements, applicants without a strong mathematical ML background will be automatically rejected)
Production Experience: Proven experience bringing ML algorithms to production environments.
Fluent in Python: Exceptional fluency in Python with experience in building and deploying backend systems.
English Proficiency: High level of proficiency in English, both written and spoken, for prompt creation and communication.
CI/CD Knowledge: Understanding of CI/CD pipelines and best practices for software deployment and observability.

What We Offer

Competitive Compensation: 28K - 40K Euros plus equity options.
Growth Opportunities: An opportunity to be at the heart of a fast-growing startup that is redefining the travel industry through AI.
Innovative Environment: A chance to work in a collaborative and innovative atmosphere with experienced professionals and industry leaders.
Location: Barcelona, the heart of EU tech startup scene, great quality of life

Location

We’re a hands-on team that thrives on in-person collaboration. Our office is a dynamic, startup environment where we whiteboard and problem-solve together every day. We’re currently only considering candidates based in Barcelona with legal work authorization. At this stage, we cannot provide visa support.

Compensation Range: €28K - €40K

Acai Travel

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ML & Prompt Engineer