ELEKS Software Engineering & Development Office is looking for a Senior Java/AI Developer based in Buenos Aires for a hybrid position: 2–3 days per week onsite at our local office, with the remaining days remote.

Working hours: 10:00 AM – 6:00/7:00 PM ART

ABOUT PROJECT

The client is among the top-5 health insurance companies in the US. They are dedicated to expanding access to high-quality, cost-effective healthcare and equipping their members with information and tools so they can make the best health care decisions for themselves and their families.

REQUIREMENTS

5+ years of professional experience in Java and/or Python
Hands-on experience working with LLMs (integration, evaluation, or architecture)
Practical experience with prompt engineering
Understanding of API design and backend service development

NICE TO HAVE

Experience with RAG (Retrieval-Augmented Generation) architectures
Experience with vector databases and embeddings
Cloud AI services experience (Azure OpenAI, AWS Bedrock, etc.)
MLOps or LLMOps exposure

RESPONSIBILITIES

Design and build AI-powered features and services using LLMs
Develop and maintain backend components in Java and/or Python
Implement prompt engineering strategies and evaluate model outputs
Collaborate with product and engineering teams to integrate AI capabilities into existing applications
Stay current with emerging LLM tooling, frameworks, and best practices
Participate in Agile/Scrum delivery practices

WHAT YOU WILL GET WITH ELEKS

Close cooperation with a customer
Challenging tasks
Competence development
Ability to influence project technologies
Team of professionals
Dynamic environment with low level of bureaucracy

ABOUT ELEKS

ELEKS is a custom software development company. We deliver value to our clients, thanks to our expertise and experience gained from working as a software innovation partner since 1991.

Our 2000+ professionals located in the Delivery Centers across Eastern Europe and sales offices in Europe and North America, provide our clients with a full range of software engineering services. These include product development, QA, R&D, design, technology consulting and dedicated teams.