Open to opportunities

John Marco

@johnmarco

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Senior application developer and frontend architect specializing in full-stack cloud solutions.

United States

Message

What I'm looking for

I seek senior roles focusing on application/frontend architecture, cloud-native systems, and mentorship in teams that value testable, scalable, and secure solutions.

I am a senior Technical Architect with 14+ years of experience designing scalable full-stack and frontend architectures, currently focused on frontend architecture and systems design.

I have led cross-functional teams and delivered cloud-native, microservices-based solutions using Java, Spring Boot, Node, React, TypeScript, Docker, Kubernetes, and AWS, improving performance, availability, and deployment velocity across multiple enterprise projects.

I prioritize maintainable, well-tested code and mentored teams to adopt strong type safety, event-driven patterns, CI/CD, and best practices that reduced bugs and accelerated delivery while maintaining high security and reliability.

Experience

Work history, roles, and key accomplishments

Current

Lead Full Stack Engineer

Current

Voya Financial

Nov 2025 - Present (1 month)

Led a cross-functional engineering team to build analytics platforms that reduced reconciliation times by 60% and improved backend performance by 30% through Java/Spring Boot microservices and frontend optimizations.

Java Spring Boot React TypeScript Redux Docker Kubernetes AWS CI CD Microservices

Senior Frontend Architect

C Spire

Mar 2024 - Nov 2025 (1 year 8 months)

Led engineering teams to architect scalable, secure microservices and high-performance React applications, improving client-server communication and enforcing TypeScript-driven code quality across projects.

React TypeScript Redux Java Spring Boot Docker Kubernetes AWS REST APIs Jest

Senior Application Developer

Nexient

Feb 2022 - Jun 2023 (1 year 4 months)

Spearheaded Java/Spring Boot microservices and AWS security assessments, implemented Kubernetes/Docker deployments and real-time event streaming with Kafka to improve system resilience in healthcare projects.

Java Spring Boot Kubernetes Docker AWS Apache Kafka Hibernate MySQL Jenkins Microservices

Senior Developer

Latcha+Associates

Aug 2020 - Feb 2022 (1 year 6 months)

Resolved complex Java/Spring issues, led full-stack development with Node.js and React, and implemented Redux-based state management and CI/CD pipelines to improve application stability and performance.

Java Spring Node React Redux SQL Server JWT Docker CI CD REST APIs

Senior Software Engineer

GE Aerospace

Apr 2019 - Jun 2020 (1 year 2 months)

Developed full-stack applications using React and Node.js, deployed services on AWS, and implemented real-time communication and database optimizations for high-availability aerospace systems.

React Node AWS PostgreSQL WebSockets Docker Terraform Jenkins MongoDB CI CD

Application Developer

CU Solutions Group

Sep 2017 - Apr 2019 (1 year 7 months)

Built enterprise Java/J2EE solutions and Node.js APIs, implemented microservices on Azure/AWS, automated CI/CD and managed database migrations to improve scalability and reliability.

Java J2EE Node Express SQL Server MySQL Azure Kubernetes Gitlab Terraform

Web Designer & Front-End Dev

University of Michigan-Flint

Nov 2012 - Sep 2017 (4 years 10 months)

Led frontend and backend development using React, Node.js, and React Native, improved AWS cost efficiency by 30%, and implemented containerized deployments and automated testing for campus applications.

React Node React Native AWS Docker Jest MongoDB PostgreSQL Redux Terraform

Frontend Developer

Flipboard

Jul 2012 - Sep 2017 (5 years 2 months)

Contributed reusable React components and Node.js microservices for payment and content systems, implemented real-time features and improved frontend performance and maintainability through Redux and testing.