Pre-screened and vetted.
Senior Full-Stack Engineer specializing in Next.js, React, and TypeScript
Mid-level AI/ML Engineer specializing in GPU-accelerated LLM and vision systems
Senior Full-Stack Software Engineer specializing in cloud-native microservices and AI/ML
Mid-Level Full-Stack Software Developer specializing in AWS cloud and automation
Senior Backend Software Engineer specializing in AWS serverless and data pipelines
Senior Software Engineer specializing in AWS distributed systems and developer tools
Senior Software Engineer specializing in developer tools, cloud automation, and generative AI
“Built and deployed a production chatbot on osvaldocalles.com and iterated through real-world LLM engineering issues: model quota/cost tradeoffs (migrating to Nova Pro), RAG accuracy via semantic chunking, AWS IAM/guardrail/security pitfalls, and Lambda/API Gateway streaming constraints (prefers JS for streaming layer). Experienced with agent orchestration using Strands SDK (AWS-focused) and LangGraph (Vercel/container deployments), plus evaluation pipelines using LLM-as-evaluator, dashboards, and staged model rollouts.”
Senior Cloud Infrastructure Architect specializing in multi-cloud, DevOps, and AI/ML platforms
“Engineering leader (Director of Development) with hands-on cloud and product experience who builds business-aligned technology roadmaps and scales teams. Delivered an enterprise cloud-migration enabler at UHG by implementing AD authentication and Terraform-based IaC for custom VM images while meeting 90-day InfoSec patch/rotation requirements, and drove a 20% lift in user consumption/retention by designing an interactive branded media portal experience for Sunkist.”
Engineering Manager specializing in MLOps/DevOps and CI/CD for deep learning platforms
“Player-coach engineering leader focused on AWS ML infrastructure and deep learning image delivery: provisioned EKS/Kubernetes for multi-node training and automated image release pipelines (Python + AWS CDK) to cut release time from 2 weeks to 1. Also built customer migration tooling for SageMaker HyperPod and owned a security incident end-to-end, implementing prevention tests and process improvements.”
Mid-level Software Engineer specializing in cloud, distributed systems, and frontend platforms
“Robotics software engineer with hands-on ROS2 experience building an audio conversion node and integrating Whisper LiveKit for streaming speech-to-text in a simulated hostile (outer space) robot environment. Also worked on a 2023 LiDAR + ML vision obstacle-detection project for a hospital-nurse-assistant robot, and has strong large-scale CI/CD deployment experience from AWS (2022–2024) across alpha/pre-prod/prod stages.”
Mid-Level Backend Engineer specializing in AWS serverless and data processing
“Amazon Prime Video backend engineer who built and operated high-traffic Python/FastAPI services and AWS-native data/batch systems. Demonstrates strong production reliability and incident ownership (CloudWatch/X-Ray), plus measurable performance wins (8s to <200ms query latency, ~40% CPU reduction) and cost-focused architectures (Lambda + ECS/Fargate with Fargate Spot).”
Senior Software Engineer specializing in cloud-native microservices and AI-enabled products
Staff AI/ML Engineer specializing in NLP, recommender systems, and Generative AI
Senior Full-Stack Software Engineer specializing in cloud-native microservices and AI/LLM integration
Senior Cloud DevOps Engineer specializing in AWS/Azure platform engineering
Senior Full-Stack Engineer specializing in .NET, Cloud Architecture, and Angular
Mid-Level Software Engineer specializing in payments, fraud detection, and risk analytics
Principal AI Architect specializing in GenAI, agentic systems, and RAG
Senior .NET Developer specializing in cloud-native microservices for healthcare and FinTech
Senior Data Engineer specializing in cloud big data pipelines and real-time streaming
“Amazon data engineer who built a real-time fraud detection pipeline for AWS Lambda, tackling multi-region telemetry quality issues and scaling stream processing for billions of daily requests. Strong in production-grade data/ML workflows on AWS (EMR, Glue, Kinesis, SageMaker) with hands-on entity resolution and anomaly detection.”