We are looking for a Senior AI Engineering Developer to transform advanced AI technologies into robust, scalable solutions for US clients. You will work closely with US stakeholders, driving AI projects that utilize large language models and cutting\-edge frameworks to enhance client experiences. Join us to contribute to innovative AI projects that shape the future of intelligent applications. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi\-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting\-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential. **Responsibilities** * Develop, test, and troubleshoot Python\-based AI software leveraging large language models and state\-of\-the\-art AI frameworks * Create and refine prompts, workflows, and evaluation strategies to improve LLM outputs for various applications * Construct and maintain RESTful APIs and embed AI capabilities into scalable production environments * Investigate and assess new AI tools, frameworks, and techniques to enhance solution offerings * Collaborate within an agile, multidisciplinary team to deliver quality results under tight deadlines * Monitor and incorporate the latest advances in AI and LLM technologies into projects * Contribute to internal and client\-facing AI efforts, including chatbots, automation, and intelligent feature development * Take full ownership of deliverables, maintaining clear communication and coordination with US\-based teams **Requirements** * Proven experience developing and debugging Python applications with at least 3 years of hands\-on work * Expert knowledge in prompt engineering and fine\-tuning large language model behaviors * Comprehensive understanding of large language model architectures and their optimal applications * Proficiency using Pydantic for data validation and configuration management * Practical familiarity with AI orchestration frameworks like LangChain or CrewAI * Experience with AI\-assistant tools such as GitHub Copilot, Claude Code, or Gemini CLI * Working knowledge of AWS cloud services and related infrastructure components * Experience integrating workflow automation platforms including n8n, Make, or Zapier * Strong analytical and problem\-solving capabilities * Excellent communication skills and ability to collaborate effectively * Ability to work independently while managing responsibilities efficiently * English proficiency at B2 (Upper\-Intermediate) level or above **Nice to have** * Hands\-on experience with the Gemini platform * Familiarity with CrewAI framework * Background in integrating automation solutions * Previous collaboration with US\-based client teams * Knowledge of AI agent creation methodologies **We offer** * Connectivity Bonus (25,000 ARS are paid with a salary receipt at the end of each month as a non\-wages concept). * Medicina Prepaga (It covers the collaborator and direct family group). * Paternity Leave (Two additional days are added to what is established by law, total of 4 days). * Discounts card. * English Training (English lessons, twice per week). * Training Program (Access to multiple customized training plans according to the needs of each role within the company). * Marriage bonus (The company doubles the allowance established by law that ANSES offers). * Referral Program (Referral bonus is paid when the referral of a collaborator joins the Company). * External Agreements and Discounts. * Vacations: 14 calendar days a year *By applying to our role, you are agreeing that your personal data may be used as in set out in EPAM´s Privacy Notice and Policy.*