Sam Zanca
Senior Software Engineer
> Experience
Senior Engineer (Contract)
- Engineered performant Go APIs, consistent latency <100ms response time across critical services for a high-growth startup.
- Reduced Docker image build time 180s -> 20s using buildkit and layer caching. Speeding up local dev and CI workflows.
- Delivered intuitive and performant frontend experiences using React and Next.js
- Led full-stack development of sleek frontend experiences and robust Go backend APIs
- Architected efficient async background job processing system using Go channels and worker pools, handling 10K+ concurrent tasks with 99.9% reliability and sub-second processing times.
Senior Engineer
Chainalysis· Remote
- $60M+ ARR – Took over and improved our second largest React/Next.js app, enhancing maintainability and shipping velocity.
- -50K lines of legacy code removed - Continuously reducing complexity while delivering new features and increasing reliable testing.
- Technical Stewardship – Guiding development for teams without dedicated frontend engineers, ensuring efficient feature delivery.
- Company-wide design system – Contributing code and shaping direction to keep it simple and maintainable.
- Resolved high-priority client issues – Tackled issues from top clients, improving user experience and eliminating major pain points.
- Cross-functional Collaboration – working closely with other product/design/engineering teams
- Best practices – Implemented data fetching and rendering optimizations for high-performance frontend applications.
Software Engineer (Contract)
Bentobox· New York City
- Built 50+ pixel-perfect UI, high-quality, responsive components from Figma designs using React.
- Aligned specs across 5+ teams to ensure smooth cross-functional collaboration and on-time feature delivery.
- Reduced tech debt by 30% by prioritizing maintainable code with a strong focus on simplicity, clarity, and UX.
- Resolved critical race conditions affecting 10,000+ users, improving stability and preventing bad user experiences.
Full Stack Engineer
Brkfst.io· New York, US
- Refactored legacy Node.js modules into modular, well‑documented REST APIs, improving maintainability and simplifying future feature development.
- Built a comprehensive browser automation testing suite with Playwright, reducing manual QA work and catching regressions earlier in the pipeline.
- Optimized PostgreSQL queries and introduced caching strategies to enhance job performance and API response times.
- Delivered backend infrastructure enhancements including database optimizations, API rate limiting, and centralized error handling to increase platform reliability.
- Led migration from a legacy Webpack build system to modern tooling, reducing technical debt and improving developer efficiency through automated performance monitoring.
- Designed and implemented AWS infrastructure using Terraform, establishing robust CI/CD pipelines that streamlined deployments.
Full Stack Engineer
TXT Group· Milan, Italy
- Acted as a point of reference/mentor for developers learning: Nodejs, React.js, Redux.js & Typescript.
- Lead the development of a React/Typescript web control panel for operating Flight Simulators via remotely via tablet for Leonardo SpA.
- Maintained c# two Xamarin Mobile apps used by ITT Inc in Automotive industry for collecting diagnostic break data transfered over wifi and low power bluetooth.
- Developed a c# app for collecting and processing flight data in collaboration with IATA Turbulence aware campaign to reduce fuel costs and flight *bumpiness*
- Developed a c# WPF Simulator for training the proper use of the ADRIAN system.
> Skills
All
JavaScriptTypeScriptReactRESTCSSNode.jsHonogRPCPostgreSQLFirebaseLinuxAWSDockerTailwindGleamClaude CodeOpenAIRAGMCP-ServersAI CleanupAi Agents