Kurt Calderon

Full stack software engineer with over 6 years of industry experience shipping back-end services, full-stack applications, and AI-driven developer tooling at AWS, Amazon Alexa, and a software development agency. Recent focus on agentic workflows and tool integration, prompt engineering systems, and RAG pipelines that translate LLM capabilities into measurable team-level efficiency gains.

Experience

Software Engineer II, Back End Mar 2025 — May 2026

Amazon Web Services - Denver, CO

Designed and shipped AI-driven workflows that automated infrastructure setup for new AWS regions and availability zones, reducing manual developer effort by ~85% and saving the team an estimated 1,400 engineering hours annually.
Owned diagnostic software running on-site across all newly-built AWS data centers. Coordinated 5 major new-region rollouts on-site with controls engineers, resolving deployment blockers that would have delayed construction.
Led a pre-production environment redesign across 8 teams (hardware, networking, operations, UI) that closed a test coverage gap responsible for 6 prior production incidents.

Prompt engineeringPythonAWS SDKAgentic coding

Software Engineer II, Full Stack May 2023 — Mar 2025

Amazon - Seattle, WA

Designed and built, from scratch, the front and back end for a daily use AI prompt-engineering feedback service that improved Alexa+ response helpfulness scores from ~4/10 to 8+/10, partnering closely with UX designers and non-technical leads.
Shipped promo card rotation feature on screen-based Alexa devices, with a supporting web authoring tool used by 15+ creative authors to style and publish card content. Content reached hundreds of millions of customers.

Agentic workflowsAnthropic APIAWS BedrockJavaKotlinTypeScriptReactNode.js

Software Engineer I, Full Stack Aug 2021 — May 2023

Amazon - Seattle, WA

Owned an adaptive response system that varies Alexa's phrasing based on user metadata and speaking patterns, so repeated interactions don't return identical replies; authoring tooling supported creative writers and served the entire Alexa customer base.
Led delivery for the team: owned scoping and prioritization, drove the team to ship consistently against targets (SCRUM lead), coordinated with PMs and adjacent leads, and mentored junior engineers and interns.

JavaKotlinTypeScriptReactNode.js

Software Engineer Intern, Full Stack Summers of 2019 & 2020

Amazon - Seattle, WA

Shipped a voice-recognition personalization feature that addresses customers by name; reached 4M+ Alexa users by end of internship and 100M+ users to date.
Built a front-end content-management portal for internal teams authoring personalized Alexa content, including a division-wide analytics dashboard developed in collaboration with UX designers and metrics specialists.

JavaKotlinJavaScriptReactNode.js

Software Engineer, Full Stack Jan 2018 — Jan 2020

Meijun (Software Development Agency) - San Diego, CA

Delivered 16 client projects ranging from WordPress sites to Node.js web apps and React Native mobile apps. Owned each project from concept creation and design to deployment and maintenance.

TypeScriptHTMLCSSPHPWordPressNode.js

Projects

Quorra Apr 2026 — Present

A self-hosted, privacy-first AI assistant running entirely on local hardware, designed to manage household coordination, personal finance, documents, and communication through a natural language interface.

Designed a multi-layer local LLM agent platform: FastAPI service with multi-user session scoping, a four-tier memory architecture (RAG → knowledge graph → episodic summaries → LoRA fine-tune), tool-calling with per-registration permission tiers, dual-model implementation for separation between conversational and diagnostic runtimes.
Integrates with a self-hosted service stack to perform actions and retrieve user or household-specific context: cloud storage (nextcloud), photo/video (immich), media streaming (jellyfin), finance tracking (actual budget), chat & communication (matrix).

Agentic workflowsRAG pipelinesTool integrationPrompt engineeringAgentic codingSystem architecture

Skills

AI / ML

Prompt engineeringAgentic workflowsTool integrationRAG pipelinesAnthropic APIAWS BedrockAgentic dev tools

Languages & Frameworks

JavaKotlinJavaScriptTypeScriptPythonReactReact NativeNode.jsHTML/CSSWordPress

Infrastructure

AWS SDKLambdaDynamoDBAPI GatewayEC2S3AWS GlueAWS CDKDocker

Practices

SCRUM leadAgile / KanbanCI/CD pipelinesIaCCode reviewUI designTechnical mentorship

Education

University of California, San Diego Grad. 2021

Bachelor of Science in Mathematics & Computer Science