Joseph Torres
@josephtorres
Senior Java full-stack engineer building fintech platforms—payments, real-time data, and revenue dashboards.
United StatesWhat I'm looking for
I’m a full stack engineer with 11+ years of experience building large-scale fintech and enterprise platforms, with a deep background in payment infrastructure, real-time data streaming, and user-facing financial dashboards. At Stripe, I’ve built end-to-end merchant revenue reconciliation and integrated fraud signal APIs into checkout, shipping features that materially reduced discrepancies and fraud-related disputes.
I develop core billing analytics APIs with Python (FastAPI) and Kafka pipelines, deliver sub-second dashboard latency with PostgreSQL/DynamoDB, and improve reliability through idempotency, retry logic, and dead-letter queues. I also lead engineering quality through observability standards (OpenTelemetry + Datadog) and accelerate iteration using Claude Code and Cursor, while previously strengthening Azure Portal experiences with Angular and C#/.NET.
Experience
Work history, roles, and key accomplishments
Built merchant revenue reconciliation end-to-end on Stripe Payments, reducing reconciliation-related merchant support tickets by 34% through a Spring Boot (gRPC) backend and a real-time React dashboard. Developed billing analytics APIs and streaming pipelines (Kafka to PostgreSQL/DynamoDB), improving revenue dashboard responsiveness with sub-second queries and cutting event processing lag by 38%.
Rebuilt Stripe’s merchant payment method management UI in React, reducing page load time by 52% and improving mobile responsiveness. Delivered multi-currency payout configuration REST APIs in Spring Boot, enabling expansion into three new markets across 14 countries, and reduced reported onboarding UI bugs by 38%.
Delivered Azure Portal features by building Angular frontend modules and C#/.NET backend APIs for subscription lifecycle and RBAC enforcement. Improved onboarding performance by replacing server-side rendering with client-side Angular routing and lazy loading, decreasing initial load time by 44% and raising Lighthouse performance from 61 to 84.
Education
Degrees, certifications, and relevant coursework
California Institute of Technology
Bachelor of Science, Computer Science
2010 - 2014
Earned a Bachelor’s degree in Computer Science at the California Institute of Technology.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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