Looking for a job

Gabriel Lopez

@gaplopez1991

Message

I am a staff software engineer specializing in full‑stack development, DevOps, and scalable payment systems.

United States

Message

What I'm looking for

I'm seeking senior engineering roles building secure, cloud-native payment or healthcare systems, focusing on scalability, compliance (PCI/HIPAA), ML-driven features, infrastructure optimization, and technical leadership where I can mentor engineers and deliver measurable cost and reliability gains.

I build and operate large-scale, compliant backend systems and user-facing applications. I architected Golang-based payment microservices that handle $50M+ in monthly transactions with PCI-DSS compliance and 99.99% uptime, and I developed real-time fraud detection pipelines (Go, Python, Kafka, ML) achieving 97% accuracy and reducing fraud losses by 30%. I also optimized Kubernetes autoscaling and AWS Fargate workloads, cutting infrastructure costs by $200K annually.

I modernized legacy Ruby on Rails + React stacks into Golang microservices and React/Next.js frontends, improving API response times by 40% and accelerating product iteration. I built HIPAA-compliant patient data platforms and integrated AI-assisted diagnostic pipelines that sped clinician decision-making by 35%, and I have a track record of improving reliability and deployment velocity across Azure and AWS environments.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Sardine

Oct 2021 - Present (4 years 8 months)

Architected Golang-based payment microservices processing $50M+ monthly transactions, ensuring PCI-DSS compliance and maintaining 99.99% uptime. Built real-time fraud detection pipelines (Go, Python, Kafka, ML) with 97% anomaly accuracy, reducing fraud losses by 30% and cutting infrastructure costs by $200K annually.

Golang Python Kafka Kubernetes AWS PCI DSS Angular Docker Terraform

Staff Software Engineer

Klara

May 2018 - Sep 2021 (3 years 4 months)

Modernized legacy Ruby on Rails + React stack into Golang microservices and React/Next.js, improving API response times by 40% and enabling faster product iteration. Built a HIPAA-compliant patient data platform handling 100K+ daily patients and integrated AI diagnostic pipelines that accelerated clinician decision-making by 35%.

Golang Ruby on Rails React Next.js PostgreSQL HIPAA Python TensorFlow GraphQL

Software Engineer

Microsoft

Sep 2015 - Mar 2018 (2 years 6 months)

Developed C# / ASP.NET Core backend services on Azure powering collaboration features for 50M+ Office 365 users and led a monolith-to-microservices migration to AKS, reducing deployment cycles from 3 weeks to <1 day. Implemented automated monitoring and failover strategies that improved reliability to 99.99% uptime and was awarded the Microsoft Gold Star (2017).

C#)ASP.NET Core Azure AKS Docker Microservices Monitoring CI CD Reliability Engineering C#

Software Engineer Intern

Uber

Feb 2014 - Aug 2015 (1 year 6 months)

Contributed to a Java-based dispatch service, optimizing driver–rider matching algorithms and improving efficiency by 15% in pilot markets. Developed a React driver onboarding dashboard that reduced onboarding time by 25% and improved adoption.

Java React JavaScript Algorithms REST APIs SQL Performance Optimization