AI Native Engineer - Senior Associate

About Xtillion

Xtillion is a fast-growing AI solutions firm helping organizations build, operationalize, and scale high-value AI systems. We deliver end-to-end solutions, from design to deployment in real-world environments, combining deep data expertise with a strong focus on measurable business impact.

Based in San Juan, Puerto Rico, Xtillion partners with organizations across U.S. industries to solve complex, high-impact business problems. We invest in our people and offer opportunities to work on technically challenging, customer-facing systems that directly influence client success.

About the Role

We’re looking for a Senior AI Engineer to join our team. In this role, you’ll design, build, and deploy intelligent systems that solve real business problems; from LLM-powered applications and retrieval pipelines to predictive models and data-driven automation. You’ll bring together software engineering rigor and applied AI expertise to deliver production-grade solutions in client environments.

Whether your background is in software engineering, data science, machine learning engineering, or a blend of disciplines, this role is for builders who want to work at the frontier of applied AI: translating complex business challenges into scalable, reliable, AI-native systems that create measurable outcomes.

What You’ll Do

• Partner with clients and cross-functional teams to translate business problems into AI solutions, defining scope, success metrics, and technical approach

• Design, build, and deploy AI-enabled applications, services, and workflows, including LLM-powered systems, retrieval pipelines, and intelligent automation

• Develop and maintain the APIs, backend services, and data pipelines that power scalable AI and analytical systems

• Drive model evaluation, prompt engineering, data preparation, and system testing to ensure quality, reliability, and continuous improvement

• Contribute to infrastructure and deployment workflows for AI systems in cloud environments

• Strengthen engineering culture through code reviews, architectural documentation, mentoring, and evolving team best practices

• What We’re Looking For

• Required Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Data Science, or a related field

• 4+ years of professional experience in software engineering, data science, machine learning engineering, or a related technical discipline

• Demonstrated experience building and deploying AI-enabled or data-intensive production systems

• Experience with modern backend or data frameworks (e.g., FastAPI, Node.js)

• Strong experience with SQL and relational or analytical data systems

• Experience working in cloud environments (e.g., AWS, Azure, GCP)

• Familiarity with Git-based version control, CI/CD pipelines, and modern development workflows

• Strong written and verbal English communication skills

• Preferred Qualifications

• Hands-on experience with LLM-powered applications, orchestration frameworks (e.g., LangChain, LangGraph), RAG architectures, vector databases, or prompt engineering techniques

• Background in applied machine learning, statistical modeling, or predictive analytics using modern frameworks (e.g., PyTorch, TensorFlow, Hugging Face, scikit-learn)

• Experience with the ML lifecycle — experimentation, evaluation, monitoring, and deployment (MLOps)

• Experience designing and maintaining large-scale data pipelines, analytical platforms, or data-intensive systems

• Familiarity with containerization, orchestration, or Infrastructure as Code technologies (e.g., Docker, Kubernetes, Terraform)

• Why Join Xtillion

• At Xtillion, you’ll take ownership of meaningful, production-grade systems and work on software that is relied upon in real-world environments. You’ll join a fast-moving team where engineers influence technical direction and uphold strong engineering standards, supported by competitive compensation and meaningful opportunities for career growth.

• Ready to Build What Matters?

• Join Xtillion and be part of a collaborative team delivering real-world data and AI solutions at scale. If you’re excited about taking ownership of complex systems and turning AI into measurable business outcomes, we’d love to hear from you!

• Learn more at https://www.xtillion.com

• We offer competitive salaries and a comprehensive benefits program for full-time employees, including medical, dental and vision coverage, paid time off and 401(k) plan.

• We are committed to providing equal employment opportunities to qualified individuals with disabilities. This includes providing reasonable accommodation where appropriate. Should you require a reasonable accommodation to apply or participate in the job application or interview process, contact [email protected]

• Xtillion is an equal opportunity employer that does not discriminate against any employee or applicant because of race, creed, color, religion, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy, or any other basis protected by law. Employment at Xtillion is based solely on a person's merit and qualifications.