We are seeking a highly skilled **Senior Software Engineer** to design, develop, and lead sophisticated AI\-driven and agentic systems. This position involves working with cutting\-edge LLM tools, mentoring team members, and shaping the technical direction of innovative projects in a fast\-paced and collaborative environment. 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** * Design and develop software components, including AI\-based agents leveraging LLMs, and enhance the existing code base and architecture * Lead major development tasks and provide guidance to team members * Translate feature requirements into detailed technical designs with time estimates * Collaborate across teams and with external partners to achieve project goals * Manage code quality through peer reviews and adherence to version control best practices * Follow established coding standards, work processes, and UI/UX principles, while recommending improvements * Handle all phases of the software development lifecycle, from design to testing * Investigate and resolve technical issues in staging and production environments * Test and debug newly implemented functionality to ensure stability and correctness * Research and incorporate external tools and technologies, including advanced LLM and AI/ML systems * Ensure proper setup and maintenance of software components and containerized environments * Write robust unit, integration, and other automated tests for new code **Requirements** * Bachelor’s Degree in Computer Science or a related discipline, or equivalent experience * 3\+ years of software engineering experience with Python in production environments * 1\+ years of experience building AI applications with LLMs or agentic systems * Knowledge of backend technologies such as Python (required); familiarity with Java, .NET, or Node.js is a plus * Proficiency in frontend technologies like HTML, CSS/LESS, JavaScript, and TypeScript * Experience with SQL databases; familiarity with NoSQL systems is a plus * Understanding of AI tooling: LLM APIs, agent\-driven workflows (e.g., LangChain, crewAI), context and prompt engineering, tool calling from LLMs, RAG, embeddings, and vector stores * Expertise in programming fundamentals, OOP principles, and core LLM functionality (inference, context engineering) * Familiarity with version control systems like Git; familiarity with Gitflow is a plus * Ability to independently manage tasks and drive development efforts as a technical leader * Flexibility to adopt new stacks, languages, or systems as needed * Containerization experience with tools like Docker, Kubernetes, or Helm is a plus **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.*