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Software Engineer with 5+ years building scalable microservices and transaction platforms using Java, Spring Boot, SQL, and AWS. Skilled with AI developer tooling (Claude Code, Gemini CLI) and mentoring junior developers, partnering with stakeholders, and delivering reliable enterprise systems serving 25M+ users. Works across backend and distributed systems, building REST APIs and enterprise workflows, improving reliability and performance through refactoring, automation, and observability, and modernizing deployment pipelines with Jenkins, Docker, and Kubernetes.…Software Engineer with 5+ years building scalable microservices and transaction platforms using Java, Spring Boot, SQL, and AWS. Skilled with AI developer tooling (Claude Code, Gemini CLI) and mentoring junior developers, partnering with stakeholders, and delivering reliable enterprise systems serving 25M+ users. Works across backend and distributed systems, building REST APIs and enterprise workflows, improving reliability and performance through refactoring, automation, and observability, and modernizing deployment pipelines with Jenkins, Docker, and Kubernetes.

Jeff Ansuarez

Software Engineer, Back-End Developer, Full Stack Developer, +2

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Software Engineer with 5+ years building scalable microservices and transaction platforms using Java, Spring Boot, SQL, and AWS. Skilled with AI developer tooling (Claude Code, Gemini CLI) and mentoring junior developers, partnering with stakeholders, and delivering reliable enterprise systems serving 25M+ users. Works across backend and distributed systems, building REST APIs and enterprise workflows, improving reliability and performance through refactoring, automation, and observability, and modernizing deployment pipelines with Jenkins, Docker, and Kubernetes.…Software Engineer with 5+ years building scalable microservices and transaction platforms using Java, Spring Boot, SQL, and AWS. Skilled with AI developer tooling (Claude Code, Gemini CLI) and mentoring junior developers, partnering with stakeholders, and delivering reliable enterprise systems serving 25M+ users. Works across backend and distributed systems, building REST APIs and enterprise workflows, improving reliability and performance through refactoring, automation, and observability, and modernizing deployment pipelines with Jenkins, Docker, and Kubernetes.

Available to hire

Software Engineer with 5+ years building scalable microservices and transaction platforms using Java, Spring Boot, SQL, and AWS. Skilled with AI developer tooling (Claude Code, Gemini CLI) and mentoring junior developers, partnering with stakeholders, and delivering reliable enterprise systems serving 25M+ users.

Works across backend and distributed systems, building REST APIs and enterprise workflows, improving reliability and performance through refactoring, automation, and observability, and modernizing deployment pipelines with Jenkins, Docker, and Kubernetes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Javanese

Advanced

Work Experience

Software Engineer at Voya Financial

June 1, 2021 - April 30, 2026

Developed Java, Spring Boot, and Python microservices for high-volume payroll systems supporting 25M+ users, improving transaction stability and backend reliability across enrollment pipelines. Built a Drools rules engine to automate employer data validation, reducing payroll integration failures by 35% and improving enrollment accuracy. Built RESTful APIs and full-stack components with Django, ReactJS, JavaScript, HTML, and CSS to deliver responsive, consistent user experiences during annual benefits enrollments. Refactored legacy SQL queries and database indexes on AWS RDS to reduce server query execution times by 40%, removing critical bottlenecks during peak transactional usage. Configured enterprise cloud environments using AWS EC2, S3, and RDS to improve scalability, uptime, and architectural stability. Modernized deployment pipelines with Jenkins, Docker, and GitHub, cutting manual release overhead by half. Led root-cause analysis for mission-critical application issues, resolvi

Software Engineer at Voya Financial (via vpay? company line shows only “Voya Financial”)

June 1, 2021 - April 30, 2026

Developed Java, Spring Boot, and Python microservices for high-volume payroll systems supporting 25M+ users, improving core transactional stability and backend reliability across enrollment pipelines. Built a Drools rules engine to automate employer data validation, reducing payroll integration failures by 35% and improving enrollment accuracy. Implemented RESTful APIs and full-stack components using Django, ReactJS, JavaScript, HTML, and CSS to deliver responsive, consistent user experiences during annual benefit enrollment. Refactored legacy SQL queries and database indexes on AWS RDS, reducing server query execution times by 40% and removing critical bottlenecks during peak transaction periods. Configured enterprise cloud environments using AWS EC2, S3, and RDS, improving scalability, uptime, and distributed architecture stability in production. Modernized deployment pipelines using Jenkins, Docker, and GitHub, cutting manual release overhead by half and reducing deployment risk. Le