Pre-screened and vetted in the Greater Seattle.
Staff Software Engineer specializing in Healthcare SaaS and real-time systems
Senior Full-Stack Software Engineer specializing in large-scale streaming platforms
Senior Engineering Manager specializing in cloud security and graph-based data platforms
“Engineering leader at Sysdig Secure who pitched and prototyped a model data platform that initially got rejected, then proved value by migrating the CIEM offering and expanding adoption across multiple verticals. Now owns the CIEM suite plus the broader Sysdig Secure data and reporting platforms, manages 14 direct reports, and also leads a pilot AI team while remaining hands-on weekly.”
Mid-Level Full-Stack Software Engineer specializing in mobile and web platforms
“iOS-focused engineer who led feature development for Amazon Books/Kindle (e.g., Series & Story So Far recaps, Kindle Memories) and introduced pure Swift packages while building sync and content download systems. Also has full-stack experience (React/TypeScript + Node with REST/GraphQL) and strong AWS operations (CDK/CI-CD, CloudWatch, canaries, autoscaling), plus founder experience at GLXY.ai shipping an early hardware MVP (weight sensors) under tight constraints.”
Senior Software Engineer specializing in AWS-based distributed systems and FinTech platforms
“Backend engineer with Amazon experience building large-scale, automated financial/accounting and pricing systems on AWS. Designed a fault-tolerant Step Functions + DynamoDB workflow platform handling 100K+ messages/sec to compute fair values and generate journal entries in under 3 seconds, and led safe API refactors using shadow mismatch testing. Also uncovered a major legacy pricing bug (tax vs non-tax swap) that cut mismatch rates from 5–10% to ~0.5% and materially improved price acceptance/business outcomes.”
Mid-Level Software Engineer specializing in cloud platforms and data engineering
Mid-Level Front-End Engineer specializing in React and Fluent UI
Mid-Level Software Engineer specializing in distributed systems and AI agent platforms
Mid-level Full-Stack Software Engineer specializing in distributed systems and GenAI platforms
Director-level Software Development Manager specializing in AWS and GenAI platforms
Senior QA Engineer specializing in AI/LLM, automation, and performance testing
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.”
Mid-level Software Engineer specializing in Windows graphics performance and cloud automation
“Graphics software engineer with academic robotics/HRI experience at Oregon State University under Dr. Heather Knight, leading a ROS+Python physical robot and Unity/C# VR system to study how motion/texture/collisions are perceived in VR (2 papers + thesis). Also built ROS-based Wizard-of-Oz TurtleBot study systems and multi-robot coordination experiments, plus industry experience with Docker/Kubeflow ML tooling and Azure DevOps CI/CD automation.”
Junior Software Development Engineer specializing in AWS distributed systems and data orchestration
“Backend/platform engineer with deep AWS experience who built a high-reliability ingestion platform (Lambda + Step Functions + DynamoDB) that became the single source of truth for training/qualification certification data across an AU region, handling high-volume async updates with strong consistency controls. Also led a major API migration from Lambda to ECS/Fargate to eliminate cold starts and increase throughput, and has hands-on EKS/Kubernetes operations plus Kafka partitioning/ordering expertise.”
Senior Software Engineer specializing in distributed systems, AI/ML platforms, and cloud-native SaaS
Senior Software Engineer specializing in AI platforms for healthcare and industrial time-series ML
Senior QA/Test Engineer specializing in cross-platform testing and identity, automotive, and consumer apps
Mid-level Backend/Distributed Systems Engineer specializing in cloud observability and data ingestion
Mid-level Backend/Data Engineer specializing in AWS data pipelines and scalable services
Senior QA / Quality Engineering Lead specializing in mobile, AR, and monetization flows
Mid-Level Software Development Engineer specializing in cloud infrastructure and automation
Mid-level Full-Stack Software Engineer specializing in AWS microservices and GenAI