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Guerby Mertil

@guerbymertil

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Senior software engineer specializing in cloud-native backend systems, AI integration, and scalable microservices.

United States

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What I'm looking for

I seek senior backend or platform roles where I can lead architecture, integrate AI/ML into production, mentor teams, and build scalable, secure cloud-native systems.

I am a Senior Software Engineer with 12+ years building and scaling cloud-native, backend-centric systems using Java and Spring Boot, complemented by Node.js, Python, and MERN stack expertise. I deliver high-throughput microservices and event-driven architectures to support web, mobile, and Android clients with production-grade APIs.

I've led architectural redesigns from monoliths to modular microservices, reduced latency and incidents with resilience patterns, and integrated ML/LLM inference into production platforms to enable personalization and automation. My work has spanned fintech, betting, healthcare, and e-commerce, where I drove measurable improvements in performance, reliability, and customer engagement.

I mentor engineers, define best practices, and take ownership of end-to-end delivery across backend, full-stack, and AI-enabled systems, emphasizing secure, observable, and scalable solutions that align with business goals.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Fanatics

Sep 2023 - Present (2 years 9 months)

Architected and delivered a cloud-native, event-driven commerce platform using Java and Spring Boot, reducing end-to-end latency by up to 80% and improving system stability during championship-level traffic.

Java Spring Boot Microservices Kafka AWS React Distributed Systems

Senior Software Engineer

EchoStar Corporation

Apr 2020 - Apr 2023 (3 years)

Designed and delivered high-throughput Java Spring Boot microservices and event-driven pipelines for satellite and OTT data platforms, improving read/write performance by ~30% and enabling real-time analytics and ML workflows.

Java Spring Boot Microservices Kafka AWS Docker Kubernetes PostgreSQL Computer Vision

Senior Software Engineer

Thrive Market

Jun 2015 - Mar 2020 (4 years 9 months)

Developed Java microservices and REST/gRPC APIs for ecommerce systems, cutting response times by 50% and delivering features that reduced operational costs by 18% through React Native logistics tools.

Java Spring Boot REST APIs gRPC React Native AWS Redis Message Queues CI CD

Software Engineer

Ensora Health

Mar 2012 - Jan 2015 (2 years 10 months)

Built Java REST APIs and optimized multithreaded Spring Batch jobs for healthcare claims, reducing processing time by 25% and enforcing HIPAA-compliant security that supported 100,000+ users annually.

Java Spring Boot REST APIs PostgreSQL AWS CI CD HIPAA TDD