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Hello! I’m Shim Medrano, a Senior Backend Engineer with 11+ years of experience building high-availability distributed systems and event-driven services. I specialize in Java, Spring Boot, Kafka, and AWS, owning scalable APIs, streaming pipelines, and cloud infrastructure. I focus on improving observability, leading platform migrations, and raising engineering standards through design reviews and mentorship. I’m an AI-native contributor who leverages agents to accelerate delivery, prototype solutions, and streamline operational workflows while maintaining strong technical judgment.…Hello! I’m Shim Medrano, a Senior Backend Engineer with 11+ years of experience building high-availability distributed systems and event-driven services. I specialize in Java, Spring Boot, Kafka, and AWS, owning scalable APIs, streaming pipelines, and cloud infrastructure. I focus on improving observability, leading platform migrations, and raising engineering standards through design reviews and mentorship. I’m an AI-native contributor who leverages agents to accelerate delivery, prototype solutions, and streamline operational workflows while maintaining strong technical judgment.

Shim Medrano

Full Stack Developer, Web Developer, Developer, +3

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Hello! I’m Shim Medrano, a Senior Backend Engineer with 11+ years of experience building high-availability distributed systems and event-driven services. I specialize in Java, Spring Boot, Kafka, and AWS, owning scalable APIs, streaming pipelines, and cloud infrastructure. I focus on improving observability, leading platform migrations, and raising engineering standards through design reviews and mentorship. I’m an AI-native contributor who leverages agents to accelerate delivery, prototype solutions, and streamline operational workflows while maintaining strong technical judgment.…Hello! I’m Shim Medrano, a Senior Backend Engineer with 11+ years of experience building high-availability distributed systems and event-driven services. I specialize in Java, Spring Boot, Kafka, and AWS, owning scalable APIs, streaming pipelines, and cloud infrastructure. I focus on improving observability, leading platform migrations, and raising engineering standards through design reviews and mentorship. I’m an AI-native contributor who leverages agents to accelerate delivery, prototype solutions, and streamline operational workflows while maintaining strong technical judgment.

Available to hire

Hello! I’m Shim Medrano, a Senior Backend Engineer with 11+ years of experience building high-availability distributed systems and event-driven services. I specialize in Java, Spring Boot, Kafka, and AWS, owning scalable APIs, streaming pipelines, and cloud infrastructure.

I focus on improving observability, leading platform migrations, and raising engineering standards through design reviews and mentorship. I’m an AI-native contributor who leverages agents to accelerate delivery, prototype solutions, and streamline operational workflows while maintaining strong technical judgment.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Software Engineer at Microsoft

July 1, 2024 - March 1, 2026

Led frontend-heavy development using React and TypeScript, delivering scalable user-facing applications with high performance. Designed and implemented backend services using Python and Node.js to support frontend workflows. Built real-time, data-driven interfaces and deployed the apps on AWS, improving system scalability and reliability. Contributed to system architecture decisions across frontend and backend components and integrated testing and QA practices to improve release quality in remote Agile environments.

Senior Full-Stack Engineer at Expedia Group

November 1, 2020 - June 1, 2024

Developed frontend applications using React to support high-traffic platforms serving millions of users. Built backend services in Python and Node.js enabling scalable API-driven architectures. Designed system components to improve performance and reduce latency by optimizing data flow and caching. Integrated frontend with distributed backend services and cloud infrastructure, enhanced QA workflows, and mentored engineers in best practices within a cross-functional team.

Software Engineer at Wayfair

September 1, 2017 - October 1, 2020

Built frontend features using JavaScript frameworks to improve customer experience and engagement. Developed backend APIs in Python and Node.js supporting e-commerce workflows. Improved application performance through code and data handling optimizations and collaborated with teams to deliver scalable solutions, while contributing to testing strategies and code reviews.

Software Engineer at Cognizant

August 1, 2014 - August 1, 2017

Developed web applications using JavaScript and backend services supporting enterprise clients. Built APIs and frontend interfaces enabling business workflows. Worked with databases and implemented efficient data processing solutions. Collaborated with teams to deliver high-quality software solutions. Debugged and resolved issues improving system stability. Gained foundational experience in full-stack and distributed system development.

Senior Software Engineer II at Microsoft

July 1, 2024 - March 1, 2026

Designed and operated Java 21 and Spring Boot services on Kubernetes to support high-volume platform workloads, improving service throughput by 32% under sustained peak traffic. Led migration of event pipelines from managed Kafka clusters to a cloud-based streaming footprint with zero downtime. Built and maintained Kafka connectors and schema governance workflows for Protobuf-based services, reducing contract-breaking changes by 40% across multi-team integrations. Implemented Terraform modules for multi-environment infrastructure, standardizing deployment, IAM, networking, and observability patterns across backend teams. Improved operational visibility with DataDog dashboards, Prometheus metrics, and PagerDuty alert tuning, cutting mean time to detect incidents by 35%. Used AI agents to scaffold migration scripts and test fixtures while validating outputs against production constraints and platform standards. Mentored engineers on streaming architecture, API design, and incident respon

Senior Backend Engineer at Expedia Group

November 1, 2020 - June 1, 2024

Built distributed backend services in Java and Spring Boot to process real-time booking and traveler events across multiple domains, supporting billions of messages per month. Developed Kafka-first integration services and stream processors for event enrichment, routing, and retry handling, improving downstream delivery reliability by 28%. Introduced Protobuf-based message contracts and versioning practices that simplified multi-language service integration and reduced serialization issues in production. Designed cloud-native APIs and asynchronous workflows on AWS using S3, DynamoDB, and containerized services, enabling more resilient and scalable data pipelines. Led a multi-quarter modernization effort replacing legacy queue-based workflows with Kafka-backed services, improving fault tolerance and recovery time during incidents. Strengthened CI/CD and release safety with automated integration tests, canary deployment checks, and better rollback procedures for streaming services.