Ivan Garcia

Senior Software Engineer · Oportun ↗

Loan application microservices · Remote (CA / MX)

Build and maintain the Java services that drive the Oportun loan application flow. Refactored a brittle retry pipeline onto Temporal IO to eliminate deadlocks, integrated a new fraud vendor with Karate-based contract tests, and configured AWS environments from scratch with Terraform. Shipping with Java 21, Spring Boot, and Kubernetes.

Senior Software Developer · Infovision LATAM (Staples) ↗

Order Shipments platform · Guadalajara, MX

Owned backend work on the REST APIs powering order shipment information for Staples.com. Stood up new Azure environments with Terraform, configured Flux-driven Kubernetes deployments for lower environments, and tuned New Relic alerts to catch latency regressions before customers felt them.

Senior Software Engineer · Vanco ↗

PMX payments platform · Cancún, MX

Added new capabilities and REST endpoints to PMX, Vanco's payments web app, and built Apache Camel flows to ingest data from RabbitMQ into the application. Hardened the app against the OWASP Top 10, encrypted sensitive fields, and wired Azure Application Insights into existing Java services.

Java Developer Leader · PepsiCo ↗

HR platform · Monterrey, MX

Led a team of 10 engineers building and migrating the in-house HR applications used by PepsiCo employees. Rewrote legacy services into Spring Boot microservices, built out Azure CI/CD pipelines, and implemented OAuth/SSO on Okta. Ran the scrum rituals and pair-programmed with the team to raise the code-quality bar.

Java Development Coordinator · Citi ↗

Payments & airtime platform · Monterrey, MX

Defined the roadmap for two in-house products and built InsightLevel — a pluggable client & sales monitoring tool — from scratch. Shipped highly transactional ESB and REST services for airtime shopping, secured them with Spring Security + JWT/OAuth, and coordinated releases across WebLogic and Mule ESB.

Temporal-Backed Retry Orchestration ↗

Replaced an ad-hoc retry flow that was deadlocking the loan-app pipeline with a Temporal IO workflow. Idempotent activities, durable state, and clean failure semantics for a critical step in the loan application.

100M+ Records/Day Batch Processor ↗

Designed and built a Spring Batch application that processes Telcel invoice data at 100M+ records per day, plus a CoDi-enabled payment portal on top of the same stack. Ran on WebSphere with IBM MQ & IIB as the backbone.

InsightLevel — Client & Sales Monitoring ↗

Built from scratch as a pluggable product with a modules/plugins system so teams could extend it without touching the core. Still available at insightlevel.com.

Employee Replicator & Check-File Pipeline ↗

A set of Spring Boot microservices — Employee Replicator/Integration API, check-file-creator, and check-file-processor — that replaced a monolithic HR provisioning flow and cut integration times for third-party systems.

Real-Time Delivery Tracking Portal ↗

Early-career project: built a delivery-route tracking portal that pulled coordinates from GPS devices via REST and plotted live positions on Google Maps for end users — plus a Java Swing + JSP dispatcher for the back office.