Pre-screened and vetted.
Staff Full-Stack Software Engineer specializing in scalable web platforms and cloud infrastructure
Intern Software Engineer specializing in full-stack, cloud, and AI systems
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.”
Senior Software Engineer specializing in distributed systems, AI/ML platforms, and cloud-native SaaS
Mid-level Software Development Engineer specializing in AWS cloud and full-stack systems
Mid-level Front-End Developer specializing in React, Next.js, and AI-enabled web experiences
Senior Full-Stack Engineer specializing in cloud-native SaaS and AI/ML integration
Mid-level Full-Stack Developer specializing in Java microservices, React, and cloud AI platforms
Senior AI and Full-Stack Engineer specializing in Healthcare IT and FinTech
Executive AI/ML engineering leader specializing in voice AI and logistics automation
Senior Full-Stack Python Developer specializing in cloud, data platforms, and GenAI
Senior Software Engineer specializing in cloud, data platforms, and LLM/RAG applications
Mid-level Full-Stack Software Engineer specializing in cloud-native and data platforms
Mid-level Full-Stack Engineer specializing in scalable web platforms and AI/ML tooling
Mid-level Software Engineer specializing in AWS backend and cloud infrastructure
“Full-stack engineer with AWS Skill Builder experience building internal content-management and search workflows in TypeScript across React and Node.js. They drove a shift from keyword to semantic search using OpenSearch and Bedrock Titan Embeddings, delivering a 5x reduction in discovery time while also improving production reliability and observability for large-scale content workflows.”
Intern AI/Full-Stack Engineer specializing in backend systems and applied machine learning
“Built and shipped a production agentic RAG system for healthcare analysts that automated compliance/operations knowledge retrieval across PDFs, reports, and databases. Emphasizes production reliability (monitoring, retries, fallbacks, async queues), strong evaluation/iteration loops, and measurable impact (3–10s responses and ~98% top-k retrieval accuracy).”
Staff Software Engineer specializing in Healthcare platforms and AI data pipelines
“Backend/data engineer with hands-on production AWS experience spanning serverless APIs (Chalice/Lambda/API Gateway/Cognito) and data pipelines (Glue PySpark + Step Functions). Has modernized a legacy SAS reporting system into AWS microservices and implemented schema-drift detection and incident prevention for ETL workflows, plus measurable SQL tuning wins (30 min to <10 min runtime).”