Backend Engineer - Serverless Microservices & Identity

JUAN LUNA

**** * ******** **. *******, CA ***** 916-***-**** *************@*****.***

EDUCATION

UNIVERSITY OF SOUTHERN CALIFORNIA - VITERBI SCHOOL OF ENGINEERING Los Angeles, CA

Bachelor of Science, Computer Engineering May 2022

SUMMARY

Backend Engineer with 4+ years designing and shipping server-side systems for high-traffic enterprise clients. Deep experience in greenfield architecture — serverless AWS infrastructure, microservice design, PostgreSQL schema design, and federated identity — with a track record of turning ambiguous business requirements into shipped, self-service products. Skilled in TypeScript, Java, Python, Node.js, Spring, and RESTful API design. Seeking backend roles focused on scalable, secure systems.

PROFESSIONAL EXPERIENCE SILICON BEACH SOLUTIONS Newport Beach, CA

Senior Backend Engineer January 2025 – December 2025

•Solo-architected a greenfield offers platform for an enterprise automotive client end-to-end – 15+ microservices, 60+ REST API endpoints, 30+ entity PostgreSQL schema, and serverless AWS infrastructure (Lambda, Step Functions, API Gateway) - defining service boundaries, data flow, and standards, then delegating service implementation to team engineers against a consistent pattern

•Built the API serving cash, lease, and finance offers across the client's full U.S. vehicle lineup, delivering offer data to the consumer website and external third-party integrators

•Replaced a 2-day, all-hands publishing process with a 15-minute self-service workflow, driving iterative prototypes against evolving business requirements to converge stakeholders on final scope and add user-facing customization

•Designed a federated identity system across 7+ greenfield internal applications by integrating the client's AzureAD with AWS Cognito's hosted SAML flow - satisfying a strict security policy prohibiting contractor-hosted auth code while delivering unified SSO

•Established the project's testing strategy across 40+ serverless microservices - JUnit unit tests as a CI gate against an isolated sample database, plus post-deployment integration tests - reducing QA ticket kickback from ~50% to near zero and eliminating rework cycles

•Provided production support for region-specific ad and marketing campaigns, executing time-sensitive offer overrides and data corrections in a live PostgreSQL environment handling millions of daily transactions

SILICON BEACH SOLUTIONS Newport Beach, CA

Software Engineer June 2022 – January 2025

•Collaborated with a 5-engineer Scrum team to build, test, and maintain two React web apps and a React Native mobile app across multiple releases

•Deployed and maintained separate React Native CI/CD pipelines in Bitrise for App Store and Google Play releases, ensuring launch stability for customer-facing features

•Independently implemented a Node.js REST API with Express and Sequelize on Kubernetes, resolving complex runtime failures in a distributed environment

•Automated weekly manual database tasks with scheduled cron jobs, returning 10+ engineer-hours per week to the team

TECHNICAL SKILLS

Proficient: Java, JavaScript, TypeScript, Python, SQL, Node.js, Express, Sequelize, Spring, React, React Native, Git

Cloud: AWS Lambda, Step Functions, API Gateway, RDS, Cognito, CodeBuild, Bitrise, Jenkins

Databases: PostgreSQL, MySQL, T-SQL

Familiar: Angular, Next.js, Hibernate, C++, C, HTML/CSS, NoSQL

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