Open to opportunities

Jennifer User

@jenniferuser5

Message

I am a Senior Java backend engineer focused on scalable microservices and resilient financial systems.

United States

Message

What I'm looking for

I'm seeking senior backend roles building cloud-native, high-throughput microservices—preferably in fintech or identity—where I can drive architecture, improve performance, and mentor teams in DevOps-driven cultures.

I build scalable, resilient Java backend systems for high-throughput financial and identity platforms, currently leading backend architecture at a large fintech. I designed a Kafka-based fund order system using the outbox pattern and created a centralized microservice chassis, improving throughput, reducing redundancy, and speeding onboarding.

Previously, I developed identity verification microservices serving millions, refactored monoliths into Spring Boot services, and implemented GDPR/BIPA-compliant secure data flows. I optimized Redis and Kafka processing, deployed robust CI/CD pipelines, and introduced tracing and log aggregation to dramatically cut incident diagnosis time.

I mentor engineers, contribute to architectural roadmaps, and prioritize performance, observability, and secure, test-driven development to deliver reliable production systems.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Backend Engineer

Current

Robinhood

Jan 2022 - Present (4 years 5 months)

Designed and led development of a wealth-management backend platform supporting 3M+ users and 200K+ daily transactions, architecting a Kafka outbox system that increased throughput 50% and Redis optimizations that reduced reward computation time 70%. Enabled 99.9% uptime with resilience patterns, reduced incident diagnosis time 60% via distributed tracing and log aggregation, and mentored a 17-mem

Java Spring Boot Kafka Redis Kubernetes ELK Gitlab CI Microservices PostgreSQL

Java Backend Engineer

Socure

Mar 2019 - Jan 2022 (2 years 10 months)

Developed and optimized identity-verification microservices for an eKYC platform with 10M+ verified users and 100K+ daily authentications, refactoring a monolith into Spring Boot microservices and reducing authentication latency 40%. Deployed Jenkins CI/CD delivering 20+ releases/month, improved logging with Elasticsearch, and achieved 90% test coverage on core services.

Java Spring Boot Redis Kafka Jenkins Docker Elasticsearch Security Microservices

Junior Java Developer

New Relic

Aug 2015 - Jan 2019 (3 years 5 months)

Contributed to Spring Boot microservice migration by refactoring legacy Java EE APIs, yielding a 20% performance gain and improved scalability. Maintained Jenkins/Docker CI pipelines, implemented Prometheus/Grafana monitoring that reduced incident response time 35%, and improved test coverage with JUnit and Mockito.