09/09/2026 updated
100 % available
PAYMENT & RISK ENGINEER | TRANSACTION SYSTEMS | TRADING PLATFORMS | BACKEND ENGINEERING
McKinney, USA
Worldwide
BA, Computer Science, University of TexasCustomer Information Control System (CICS)Payment SystemsJava Transaction APINode.jsOnline Transaction ProcessingPayment GatewayTransaction Processing SystemsTransaction Processing (Computing)Microsoft Transaction ServerBlackLine Transaction MatchingBackendBackend Programming
• Contributed to backend systems processing high volumes of application events and transactions, focusing on predictable service behavior, data integrity, scalable processing, and reliable system-to-system communication.
• Implemented reliability patterns including idempotent processing, retry handling, timeout management, duplicate-event protection, structured error handling, and consistency safeguards for distributed backend workflows.
• Supported production integrations and operational tooling by troubleshooting processing failures, tracing backend events across services, improving monitoring visibility, and helping maintain dependable transaction-processing workflows.
• Developed backend components for transaction-processing workflows, implementing business validation, state transitions, consistency controls, and processing logic for systems requiring reliable online transaction handling.
• Worked on risk-aware processing patterns covering configurable limits, transaction eligibility, account-level controls, exception workflows, and reconciliation of processing outcomes.
• Collaborated with engineering, QA, product, and operations teams to investigate transaction issues, reproduce edge cases, improve backend safeguards, and document operational procedures for production support.
• Designed and developed backend workflows for transaction-oriented applications, covering validation, processing states, exception handling, retries, and reliable completion of financial operations.
• Implemented rule-driven controls around transactions, accounts, and operational limits, including validation paths designed to prevent invalid processing, duplicate execution, and inconsistent transaction states.
• Built and maintained backend integrations between transaction services, internal platforms, data stores, and external systems, with emphasis on predictable interfaces, error handling, and reliable exchange of financial data.
• Strengthened operational visibility through structured logging, transaction tracing, monitoring, reconciliation workflows, and diagnostic information that helped teams investigate failed, delayed, or inconsistent transactions.
Experience
Professional experience10+ years
Freelancer since2014
Languages
EnglishFluent