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Fulltime Junior Software Developer Jobs in Puerto Rico

Xtillion

AI Native Engineer - Senior Associate

San Juan, PR · On-site

$120K - $158K/yr

You'll bring together software engineering rigor and applied AI expertise to deliver production ... Learn more at We offer competitive salaries and a comprehensive benefits program for full-time ...

Red Ventures

Senior Software Engineer | RVPR

San Juan, PR · On-site +1

$120K - $158K/yr

SENIOR SOFTWARE ENGINEER RVPR is seeking a Senior Engineer to help build and scale the distributed ... Full-time employees accrue 20 days of PTO for a full calendar year annually, with an increase to 25 ...

Red Ventures

Senior Software Engineer | RVPR

San Juan, PR · On-site

$120K - $158K/yr

SENIOR SOFTWARE ENGINEER RVPR is seeking a Senior Engineer to help build and scale the distributed ... Full-time employees accrue 20 days of PTO for a full calendar year annually, with an increase to 25 ...

Sargent & Lundy

PR · On-site

$99K - $131K/yr

Guide junior and senior-level engineers and designers in protection and controls engineering design ... SKM, ETAP, ASPEN, CDEGS, or vendor software. * Familiarity with design codes and standards, such as ...

Sargent & Lundy

Lead Substation Engineer 1 - Grid

Mayaguez, PR · On-site

$102K - $134K/yr

Guide junior and senior-level engineers and designers in protection and controls engineering design ... SKM, ETAP, ASPEN, CDEGS, or vendor software. * Familiarity with design codes and standards, such as ...

Xtillion

Engineering Manager

San Juan, PR · On-site

Lead and support teams of software and data engineers delivering AI-enabled systems in production ... Learn more at We offer competitive salaries and a comprehensive benefits program for full-time ...

Hewlett Packard Enterprise

AI Ops Engineer

San Juan, PR · Hybrid

$51.75 - $70.75/hr

Develops software components such as operating systems, compilers, routers, networks, utilities ... May act as a project lead and provide guidance to junior professionals. Exercises independent ...

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Infographic showing various Fulltime Junior Software Developer job openings in Puerto Rico as of July 2026, with employment types broken down into 81% Full Time, 5% Part Time, 1% Temporary, and 13% Contract. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution.

AI Native Engineer - Senior Associate

Xtillion

San Juan, PR • On-site

$120K - $158K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 10 days ago

Job description

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, please contact gguerrero@xtillion.com
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.

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