Pre-screened and vetted.
Executive Technology Leader specializing in digital health and game platforms
“Technical founder at Mightier, a clinically-validated mental health video game system for kids, where the company has raised $30M. Brings 25+ years of game development experience, has built zero-to-one titles with millions of players, and has scaled core functions from product/dev through QA, customer support, and even manufacturing for a physical-shipping business; currently leading an agentic coding transformation.”
Director-level Front-End Engineering Leader specializing in scalable web and mobile apps
“Amazon engineer/leader who drove a major modernization of the AWS Database Migration Service Console, migrating a monolithic UI to a micro-frontend architecture while improving performance, reliability, and engineering standards. Operates as a player-coach (80/20 hands-on/management), with demonstrated incident ownership and process improvements across Amazon and Walmart Labs.”
Senior Software Engineer specializing in ML, search, and AI-powered backend systems
Executive Full-Stack Developer specializing in computer graphics and AI-powered visual search
Senior Full-Stack Engineer specializing in AI, Web3, and scalable web platforms
Director-level Software Development Manager specializing in AWS infrastructure and distributed systems
Senior Software Engineer specializing in distributed systems and AI-powered platforms
Senior Software Engineer specializing in FinTech and distributed systems
“Backend/AI engineer who has built a rule-service platform on AWS and evolved it into an agentic RAG system using LangChain, ReAct, tool calling, and LLM-as-judge review. Notable for combining heavy AI-assisted development with production safeguards like manual CR, CloudWatch monitoring, fallback strategies, benchmark testing, and user-feedback-driven model improvement.”
Mid-level Software Developer specializing in cloud data engineering and MLOps
“Software engineer with strong AWS production experience, including an end-to-end historical backfill system exporting ~10PB of CloudWatch logs into a data lake using Step Functions/Kinesis/Lambda/Firehose/Glue. Emphasizes reliability and operability (DynamoDB checkpointing, monitoring dashboards, CI/CD with canary tests) and has also built customer-facing UI work for the Visa Developer Portal using Angular + Spring Boot, plus React/Redux frontend work.”
Executive Enterprise Architect specializing in ServiceNow and IT operations
Mid-level Data/Software Engineer specializing in healthcare and FinTech analytics
Mid-level Full-Stack Software Developer specializing in Java microservices and React on AWS
Senior AI/ML Engineer specializing in personalization, recommendations, and forecasting
Senior DevSecOps Engineer specializing in multi-cloud CI/CD and federal compliance
Mid-level Software Engineer specializing in AWS backend systems and LLM infrastructure
Mid-Level Full-Stack Software Developer specializing in AWS cloud and automation
Mid-level Data Engineer specializing in big data platforms and analytics infrastructure
Executive product delivery leader specializing in cloud and financial platforms
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.”