SA

Saul Ariel Castañeda

Available to hire

I’m a Software Engineer based in Buenos Aires, passionate about building reliable backend and full-stack systems while continuously strengthening my skills in AI and LLM applications.

About

I’m a Software Engineer based in Buenos Aires, passionate about building reliable backend and full-stack systems while continuously strengthening my skills in AI and LLM applications. I enjoy turning ambiguous requirements into well-designed, efficient solutions—especially when I can combine solid engineering practices with agentic workflows and RAG-based features.

I thrive in agile, collaborative environments, where I contribute to code quality, testing, and maintainability, and where learning from others is part of the daily process. Recently, I’ve delivered end-to-end AI-powered compliance and training capabilities, and I like working across the full stack—from API design and cloud infrastructure to frontend integration—while keeping performance and delivery timelines front and center.

  • 1 year's experience
  • Joined September 2026

Languages

  • EnglishFluent
  • Spanish; CastilianFluent
  • GermanBeginner

Industry experience

  • Software & Internet
  • Computers & Electronics
  • Education
  • Professional Services

More experts in Buenos Aires, Argentina

Work experience

Full-Stack Engineer · Clear DecisionsJan 2026 – Present · 11 mos

Owned and delivered AI-powered compliance features end-to-end, including an agentic ISO gap-analysis engine and a RAG-based role-oriented training generator. Implemented multi-tenant concurrency using a custom token bucket and async I/O parallelisation, reducing analysis time from 17 to 8 minutes for 90 simultaneous documents. Delivered full-stack functionality across a Python backend (FastAPI, Pydantic, SQLAlchemy), GCP infrastructure, React frontend, and integrations with multiple AI model providers. Designed agentic coding skills and sub-agent workflows to strengthen code review, testability, and quality standards for AI-assisted development.

Backend Developer · Clear DecisionsJun 2025 – Dec 2025 · 7 mos

Modernised a Spring-based DCIM tool by upgrading Java dependencies and refactoring legacy modules, then migrated the application to the cloud using Docker and GCP. Improved release reliability by enabling independent module builds through CI/CD pipeline scripting.

Fullstack Developer (Volunteer) · IEEE ITBA Student BranchMay 2023 – Dec 2023 · 8 mos

Built and maintained an Angular and Firebase application supporting branch operations. Collaborated across interdisciplinary teams, including fundraising and robotics, to support ongoing branch needs and features.

Education

M.Sc. Software Engineering (Double Degree) · FH Technikum Wien, Vienna2024 – 2025
B.Eng. Software Engineering (Honours Diploma) · ITBA, Buenos Aires2020 – 2025
M.Sc. Software Engineering · FH Technikum Wien2024 – 2025
B.Eng. Software Engineering (Honours Diploma) · ITBA2020 – 2025

Hire Saul Ariel Castañeda today

Post a job and invite Saul, or contact them directly. No hidden commission.

Post a job