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I'm Arnoldo Reyes, a Senior Software Engineer and Technical Lead specializing in distributed systems, fintech, and real-time fraud detection. I design cloud-native architectures and scalable microservices that handle high-throughput workloads with sub-second latency, while mentoring teams to deliver robust software. I enjoy integrating AI-assisted workflows to accelerate development without compromising performance or reliability, and I thrive in fast-paced environments where collaboration across product, security, and operations is essential.…I'm Arnoldo Reyes, a Senior Software Engineer and Technical Lead specializing in distributed systems, fintech, and real-time fraud detection. I design cloud-native architectures and scalable microservices that handle high-throughput workloads with sub-second latency, while mentoring teams to deliver robust software. I enjoy integrating AI-assisted workflows to accelerate development without compromising performance or reliability, and I thrive in fast-paced environments where collaboration across product, security, and operations is essential.

Arnoldo Reyes

Full Stack Developer, Web Developer, Back-End Developer, +2

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I'm Arnoldo Reyes, a Senior Software Engineer and Technical Lead specializing in distributed systems, fintech, and real-time fraud detection. I design cloud-native architectures and scalable microservices that handle high-throughput workloads with sub-second latency, while mentoring teams to deliver robust software. I enjoy integrating AI-assisted workflows to accelerate development without compromising performance or reliability, and I thrive in fast-paced environments where collaboration across product, security, and operations is essential.…I'm Arnoldo Reyes, a Senior Software Engineer and Technical Lead specializing in distributed systems, fintech, and real-time fraud detection. I design cloud-native architectures and scalable microservices that handle high-throughput workloads with sub-second latency, while mentoring teams to deliver robust software. I enjoy integrating AI-assisted workflows to accelerate development without compromising performance or reliability, and I thrive in fast-paced environments where collaboration across product, security, and operations is essential.

Available to hire

I’m Arnoldo Reyes, a Senior Software Engineer and Technical Lead specializing in distributed systems, fintech, and real-time fraud detection. I design cloud-native architectures and scalable microservices that handle high-throughput workloads with sub-second latency, while mentoring teams to deliver robust software.

I enjoy integrating AI-assisted workflows to accelerate development without compromising performance or reliability, and I thrive in fast-paced environments where collaboration across product, security, and operations is essential.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer (Tech Lead) at Brightwell

January 1, 2021 - Present

Architected and led the Cross-Border Payments Platform, enabling banks and credit unions to offer international transfers through secure core banking integrations, supporting 300+ TPS with sub-second latency using Node.js, Python, microservices, Event-Driven Systems, and Azure cloud infrastructure. Designed plug-and-play REST API integrations and gateway patterns to improve onboarding scalability. Implemented Real-Time Fraud Detection with a configurable weighted rules engine. Built scalable backend services with Azure Front Door and Azure Event Grid, and developed embeddable multi-tenant frontend applications using React/TypeScript/Next.js. Established CI/CD pipelines, automated testing, code review governance, and integrated AI-augmented workflows.

Senior Full Stack Developer (Consulting Engagement) at Rylabs.io

January 1, 2020 - January 1, 2024

Led development of the Enterprise Healthcare Case Management Platform, building scalable backend services with Node.js and Python and frontend systems with TypeScript/React. Designed and optimized REST API integrations, data synchronization pipelines, and performance tuning strategies to improve system responsiveness and maintainability.

Senior Web & Android Developer at AgencyTEN

September 1, 2014 - March 1, 2022

Led development of multiple web and mobile application platforms using Node.js, Python, REST APIs, and JavaScript, delivering scalable backend architectures. Developed performance-sensitive Android applications with custom views and OpenGL, and defined scalable backend and deployment strategies to improve system design and maintainability.

Independent Contractor (Web & Mobile Development) at AldoReyes.com

March 1, 2013 - January 1, 2022

Delivered full-stack web and mobile systems, managing architecture, scalability, and production deployment. Emphasized scalable backend design, performance tuning, and maintainable code architecture across concurrent client engagements.

Senior Web Developer at PwC

August 1, 2013 - March 1, 2014

Developed enterprise backend systems using Node.js and Python, building reusable scaffolding frameworks to standardize architecture and improve development efficiency.

Senior Web & Android Developer at AgencyTEN

March 1, 2009 - July 1, 2013

Drove full-stack development for web and Android platforms, delivering scalable backend architectures and performance-focused mobile experiences.

.NET Developer at Nasoft USA

September 1, 2008 - February 1, 2009

Developed enterprise applications using C#, .NET Framework, and SQL-based systems to support backend services and business process automation.

Flash, Flex, .NET Developer at Scio Consulting

January 1, 2005 - June 1, 2008

Developed rich internet applications using Flash, Flex, ActionScript, .NET and SQL, contributing to distributed web systems and backend integrations.