Software Engineer · Based in California

Software Engineer Based in California.

Julio Salvat is a software engineer, UI/UX designer, and character designer specializing in React, full-stack web applications, modern product design, dashboards, branding, 3D characters, and original animated character concepts. Senior software engineer and CTO with 20+ years shipping production systems on AWS.

About

Engineering software that ships and scales.

As a software engineer, I work across the entire stack — designing data models, writing performant backend services, building modern web frontends, and operating the cloud infrastructure that runs it all. I currently serve as Chief Technology Officer at Skywest, where I lead engineering, AI development, and production operations across an ad-tech and analytics platform.

My work spans a wide range of problems: architecting ETL pipelines that consolidate data from advertising platforms, affiliate networks, and internal systems; designing and training machine learning models for lead scoring, conversion attribution, and audience segmentation; and building AI agents that automate complex operational workflows. I write production code in Python, JavaScript/TypeScript, and PHP, deploying on AWS using ECS, Lambda, RDS, S3, and CloudFront.

What I do as a software engineer

  • Architect and ship scalable web applications end-to-end (backend, frontend, database, infrastructure)
  • Design and implement ETL data pipelines and analytics infrastructure
  • Build and integrate AI agents, LLM-powered features, and ML models into production systems
  • Lead engineering teams, drive technical hiring, and own the technical roadmap
  • Operate production AWS environments — ECS, Lambda, RDS, CloudFront, IAM, VPC, monitoring
  • Translate ambiguous business problems into clean, maintainable, well-tested software

How I work

I favor pragmatic engineering: simple architectures, clear data contracts, and tight feedback loops. I'm equally comfortable as a hands-on individual contributor and as a technical leader setting direction for a team. I care about correctness, performance, and developer experience — and I believe great software comes from engineers who genuinely understand both the system and the user.

Skills & Stack

Core engineering capabilities.

A focused stack built around proven, production-ready tools — chosen for reliability and developer velocity, not novelty.

Backend Engineering

Production APIs and services that handle real traffic.

  • Python / Django / FastAPI
  • Node.js / Express
  • PHP / Laravel
  • REST & GraphQL APIs

Data & Databases

From relational schemas to data lakes and analytics pipelines.

  • PostgreSQL / MySQL
  • MongoDB / DynamoDB
  • ETL pipelines & data modeling
  • Redis caching

Cloud & DevOps

Production AWS infrastructure, CI/CD, and observability.

  • AWS: ECS, Lambda, RDS, S3, CloudFront
  • Docker / containerization
  • CI/CD pipelines
  • Monitoring & logging

AI & ML

Applied AI in production — not just demos.

  • LLM integration & prompt engineering
  • AI agents & tool use
  • ML for scoring & classification
  • n8n / Lambda automation

Frontend Engineering

Modern, performant interfaces built with React and the modern JS ecosystem.

  • React / Next.js / TypeScript
  • Component-driven design systems
  • Accessible, responsive UI
  • State management patterns

Technical Leadership

Building and mentoring high-performing engineering teams.

  • Engineering hiring & mentorship
  • Technical roadmapping
  • Architecture reviews
  • Cross-functional collaboration

Need a senior engineer who ships?

Open to consulting, contract, fractional CTO, and senior engineering engagements. Let's talk about what you're building.