Senior Backend Engineer Java, Spring, AWS, Microservices

FABIAN GONZALEZ

412-***-**** *********@*****.*** linkedin.com/in/fabian-gonzalez-03883198

PROFESSIONAL SUMMARY

Senior Backend Engineer with over 10 years of experience building production Java services at large U.S. financial institutions including JPMorgan Chase, PNC Bank, and Citibanamex. Specialized in distributed systems for regulated consumer finance. Spent the last four years on a real-time credit pre-qualification platform serving JPMorgan Chase Auto Finance, building and operating Spring Boot microservices on AWS, Amazon EKS, and Amazon ECS under SOX-compliant, audit-controlled change processes. Skilled across Java, Spring Boot, Kubernetes, Jenkins, Terraform, and Amazon RDS, with growing depth in AI-augmented engineering. AWS Certified Developer and AWS Certified AI Practitioner. Pursuing a Master of Science in Computer Information Systems at Colorado State University.

TECHNICAL SKILLS

Languages: Java, Python, SQL (Structured Query Language), Bash

Backend and Frameworks: Spring Boot, Spring Cloud, Spring Security, Hibernate, Java Persistence API (JPA), Object-Relational Mapping (ORM), REST APIs, SOAP services, OAuth2, microservices architecture, distributed systems

Cloud and Infrastructure: Amazon Web Services (AWS), Amazon EKS (Elastic Kubernetes Service), Amazon ECS (Elastic Container Service), Amazon EC2, Amazon S3, AWS IAM, Amazon RDS, AWS Secrets Manager, Kubernetes, Docker, Helm, Jenkins, Continuous Integration and Continuous Deployment (CI/CD) pipelines, Terraform

Testing: JUnit, Mockito, Karate Framework, integration testing, contract testing

Databases: PostgreSQL, MySQL, Oracle, Microsoft SQL Server

AI and Tooling: GitHub Copilot, prompt engineering, Large Language Model (LLM) application patterns, Retrieval-Augmented Generation (RAG), LangGraph, ChromaDB

PROFESSIONAL EXPERIENCE

JPMorgan Chase and Co. Wilmington, DE

Senior Software Engineer II January 2022 – May 2026

●Built and maintained Java Spring Boot microservices on AWS for Auto Finance's real-time auto loan pre-qualification platform, supporting credit eligibility evaluation, risk-based pricing, and pre-qualified offer generation across approximately 7 backend services within a 10-engineer team collaborating with 5 partner teams.

●Built automated testing tool for the Credit Decisioning Rules Engine team, using Karate framework, enabling rapid validation of policy rule changes (eligibility criteria, risk thresholds, pricing logic) which helped to reduce manual testing overhead by 40%.

●Worked on containerizing credit decisioning microservices onto Amazon EKS, maintaining and updating Kubernetes manifests including Deployments, Services, ConfigMaps, and Secrets, and aligning resource limits, health checks, and rollout configuration across 5 environments (DEV, QA, UAT, SIMPROD, PROD).

●Contributed to migration from Amazon EKS to Amazon ECS to reduce operational overhead and align with the broader platform direction, updating deployment configuration and pipelines while keeping services running cleanly through the transition.

●Implemented blue/green and canary deployment strategies in Spinnaker for the pre-qualification platform, enabling zero-downtime releases with automated rollback capabilities, improving production release confidence and reducing incident rate by 20%.

●Contributed to Terraform-managed infrastructure by maintaining modules for EKS workloads and supporting AWS resources (EC2, S3, IAM, RDS, Secrets Manager), keeping environments consistent and version-controlled across development, QA, UAT, SIMPROD, and production.

●Participated in peer code review and engineering practices across the team, reviewing pull requests, providing technical feedback, and helping maintain consistency in coding standards, test coverage, and service design across the credit-decisioning domain.

●Prototyped an LLM-driven engineering assistant using LangGraph and a Retrieval-Augmented Generation (RAG) knowledge base over internal API specifications and source code, aimed at reducing repetitive backend tasks. Daily user of GitHub Copilot and AI-augmented development workflows.

Infinity Consulting Solutions (Client: JPMorgan Chase) Wilmington, DE

Java Developer (Contract) August 2021 – January 2022

●Delivered backend services and CI/CD automation for enterprise financial systems. Converted to a full-time role at JPMorgan Chase based on contribution.

Sngular (Client: PNC Bank) Pittsburgh, PA

Software Developer January 2019 – June 2021

●Built backend services for retail banking platforms using REST and SOAP APIs, integrating with core banking systems and third-party financial data providers.

●Implemented Java microservices aligned with PNC's enterprise architecture standards, including service discovery, distributed configuration, and secure inter-service communication.

Tata Consultancy Services (Client: Citibanamex) Mexico City

Java Web Developer September 2017 – April 2018

●Developed backend services for banking web applications using Java and Spring Boot, exposing RESTful APIs that supported regulated financial workflows.

●Built Spring Cloud microservices with service discovery, API gateway routing, declarative REST clients, and centralized configuration.

Softtek Mexico Mexico City

Software Developer March 2016 – September 2017

●Provided Level 3 production support and feature development for enterprise workforce management applications used daily by NBC employees in the United States.

●Maintained and enhanced RESTful services powering Chili's digital platforms, including mobile, web ordering, and in-restaurant kiosks, ensuring high availability across customer-facing channels.

Accenture Mexico Mexico City

Software Developer May 2015 – March 2016

●Provided Level 3 backend support and enhancements for hospitality management systems used across Grupo Posadas hotel brands, building Java backend components using Struts, Spring, and Hibernate.

EDUCATION

Colorado State University Online

Master of Science in Computer Information Systems Feb 2026 – Present

Universidad del Valle de Mexico Mexico City

Bachelor of Science in Information Systems and Computer Science June 2010 – June 2014

CERTIFICATIONS

●AWS Certified Developer – Associate

●AWS Certified AI Practitioner

●Oracle Certified Associate – Java SE 8 Programmer

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