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EY Junior en Impuestos 
Costa Rica 
1144298

21.08.2025

With deep functional and sector expertise, paired with innovative AI-powered technology and an investor mindset, we partner with CEOs, Boards, Private Equity and Governments every step of the way – enabling you to shape your future with confidence.

Your key responsibilities

· Partner with Business and Strategy Leads to translate business needs into executable AI workflows, data pipelines, and client-specific product specifications.

· Define the end-to-end architecture for agents that integrate LLMs, retrieval-augmented generation (RAG), multi-source data ingestion, and analytics components.

· Lead model selection, feature design, embedding strategy, and prompt frameworks (e.g., LangChain, LlamaIndex).

· Design and build robust data pipelines that are scalable, reproducible, and versioned.

· Collaborate with Data Engineering and DevOps on pipeline integration, data normalization, and system deployment.

· Set coding standards and mentor junior engineers; perform model/code reviews and LOE, scope and roadmap refinement.

· Own delivery of AI/ML-powered components from prototype to production (REST APIs, dashboards, or embedded agents).

To qualify for the role, you must have

· A bachelor’s degree in Business, Statistics, Economics, Mathematics, Engineering, Computer Science, Analytics, or other related field and 8 years of related work experience; or a graduate degree and approximately 7 years of related work experience.

· Full-time, hands-on experience applying AI/ML to solve real-world problems.

· Familiarity with multi-modal agent frameworks (LangChain, Haystack, RAG pipelines).

· Expertise in vector databases (e.g., Pinecone, Weaviate, Chroma), retrieval systems, and LLM fine-tuning.

· Strong understanding of real-world structured data merging, schema linking, and model evaluation at scale.

· Strong understanding of ML workflow including ingesting, analyzing, transforming data, and evaluating results to make meaningful predictions.

· Fluency in Python, PyTorch or TensorFlow, with ability to architect APIs around ML models.

· Proven experience designing, building, and maintaining ML models, frameworks, and pipelines.

· Experience working with and/or leading cross-functional business/engineering teams to deliver complex solutions.

· Excellent communication skills, with the ability to convey complex, technical concepts and progress, methodologies, solutioning, and results to business and client stakeholders.

· The ability and willingness to travel and work in excess of standard hours when necessary.

Ideally, you’ll also have

· Experience building and deploying AI/ML products or features in a production environment.

· Experience working in a startup and/or management/strategy consulting.

· Knowledge of how to leverage AI tools in a business setting, including Microsoft Copilot.

· Collaborative, problem-solving, and growth-oriented mindset.

What we offer you
At EY, we’ll develop you with future-focused skills and equip you with world-class experiences. We’ll empower you in a flexible environment, and fuel you and your extraordinary talents in a diverse and inclusive culture of globally connected teams. Learn .

  • We offer a comprehensive compensation and benefits package where you’ll be rewarded based on your performance and recognized for the value you bring to the business. The base salary range for this job in all geographic locations in the US is $250,000 to $290,000. Individual salaries within those ranges are determined through a wide variety of factors including but not limited to education, experience, knowledge, skills and geography. In addition, our Total Rewards package includes medical and dental coverage, pension and 401(k) plans, and a wide range of paid time off options.
  • Join us in our team-led and leader-enabled hybrid model. Our expectation is for most people in external, client serving roles to work together in person 40-60% of the time over the course of an engagement, project or year.
  • Under our flexible vacation policy, you’ll decide how much vacation time you need based on your own personal circumstances. You’ll also be granted time off for designated EY Paid Holidays, Winter/Summer breaks, Personal/Family Care, and other leaves of absence when needed to support your physical, financial, and emotional well-being.