Open to opportunities

Joseph Yeager

@josephyeager

Message

Senior backend-focused Full Stack Engineer specializing in scalable Java microservices and multi-cloud systems.

United States

Message

What I'm looking for

I seek senior backend- or platform-focused roles where I can architect scalable Java microservices, mentor teams, improve observability, and deliver secure, high-performance systems in a collaborative, product-driven environment.

I am a senior full-stack engineer with 12+ years designing and delivering scalable, secure, production-grade web platforms across CRM, FinTech, SaaS, and enterprise environments.

My core strength is backend engineering with deep expertise in Java (Spring Boot), distributed microservices, event-driven systems (Kafka), and JVM performance optimization, while I also contribute to frontend work using React, Angular, Next.js, and TypeScript.

I have led end-to-end initiatives at companies like HubSpot, Nike, Avea Solutions, and CDK Global, architecting high-throughput REST and GraphQL APIs, optimizing databases (PostgreSQL, MySQL, MongoDB), and deploying containerized services across AWS, Azure, and Kubernetes.

I prioritize clean architecture, automated testing, observability, and secure API design, and I mentor engineers, drive architecture decisions, and collaborate cross-functionally to deliver resilient, maintainable systems.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

HubSpot

Feb 2022 - Dec 2025 (3 years 10 months)

Led end-to-end development of core CRM modules, architecting Java (Spring Boot) microservices and enterprise Angular frontends that handled 1M+ daily requests and improved platform scalability and reliability.

Java Spring Boot Angular PostgreSQL Kafka Redis AWS Docker CI CD

Full Stack Engineer

Avea Solutions

Jul 2021 - Feb 2022 (7 months)

Developed Java (Spring Boot) backend services and React TypeScript dashboards for FinTech transaction workflows, improving performance and cloud-native deployment reliability on Azure.

Java Spring Boot React TypeScript MongoDB Azure Docker CI CD

Back End Developer

Nike

Sep 2018 - Jul 2021 (2 years 10 months)

Built and scaled Java (Spring Boot) e-commerce microservices, implemented Kafka pipelines and optimizations that reduced product retrieval latency by 50% and contributed to a 45% increase in conversion.

Java Spring Boot Kafka MongoDB React Azure Docker Performance Optimization

Software Engineer

CDK Global

Feb 2016 - Sep 2018 (2 years 7 months)

Contributed to modernization of a multi-tenant SaaS dealership platform by developing Java (Spring Boot) backend services and optimizing PostgreSQL schemas for multi-tenant performance and reliability.

Java Spring Boot PostgreSQL REST APIs Microservices CI CD Testing

Software Engineer

Self-Employed

Aug 2013 - Jul 2015 (1 year 11 months)

Delivered end-to-end backend systems and infrastructure for client web applications, managing server provisioning, database design, and deployments across Linux environments.

MySQL PostgreSQL Linux Nginx REST APIs Server Administration