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Marcelo Hernandez Rishmawy

@mrishmawy

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Technical backend architect and principal engineer driving scalable distributed systems and API platforms.

Sweden

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What I'm looking for

I’m looking for ambitious challenges where I can lead hands-on backend architecture, drive R&D and prototyping, and shape product strategy—building distributed, high-availability systems with teams focused on best-in-class outcomes.

I am a dynamic, results-driven technical leader with 25+ years specializing in scalable backend architecture, systems integration, and API development. I thrive on R&D challenges and love solving complex distributed systems problems—pushing what’s possible with technology.

I’ve spearheaded ground-up, highly scalable platforms across gaming and music streaming, combining robust engineering with product-minded decision-making. My hands-on approach blends technical strategy, architecture, and reliability engineering to deliver platforms “best in their class.”

Most recently, I designed and built a highly scalable backend platform for Overwatch: Rush, architecting infrastructure for high availability and low latency. I deployed cloud-native services using Google Cloud Platform and Kubernetes, partnering closely with product and design teams to shape technical capabilities.

Earlier roles strengthened my depth in distributed systems and integrations—building a Voice API ecosystem for major assistants, delivering scalable microservices, and enabling critical offline playback support for Apple Watch. I’ve also led engineering from scratch, built high-volume middleware handling billions of transactions, and delivered secure, modular enterprise and national-scale systems leveraging Java, Spring, and cloud infrastructure.

Experience

Work history, roles, and key accomplishments

Current

Principal Engineer

Current

Blizzard Entertainment

Jul 2024 - Present (2 years)

Spearheaded the ground-up design and development of a highly scalable backend platform for Overwatch: Rush, architecting for high availability and low latency for global players. Deployed and managed cloud-native services on GCP and Kubernetes, partnering with product and design teams to shape technical strategy.

GCP High Availability Java Spring Framework Redis Cassandra Kubernetes

Principal Engineer

King

Aug 2022 - Jun 2024 (1 year 10 months)

Served as a core technical leader in the New Games studio, focusing on R&D and rapid prototyping of new game concepts. Architected, developed, and maintained high-performance backend features to support unreleased titles and cross-functional development teams.

Prototyping Technical Leadership backend architecture System Reliability Performance Optimization Product Strategy API Design

Senior Software Engineer

Spotify

Feb 2017 - Aug 2022 (5 years 6 months)

Developed and integrated a robust Voice API to support Spotify across major voice assistants, enabling seamless partner integrations. Built scalable backend microservices and delivered offline playback support for Apple Watch, improving reliability across diverse data pipelines.

React Java Kotlin Kubernetes TypeScript Android Microservices API Integration GCP

Senior Software Engineer

Intertec International

Jul 2013 - Jan 2017 (3 years 6 months)

Developed and maintained a high-volume SOA middleware processing billions of monthly transactions for enterprise clients. Built SOAP web services with Java, Spring, and JDBC, optimizing for thread safety and high-availability uptime.

Java Spring Framework Web Services Middleware JDBC High Availability Thread Safety Performance Optimization Enterprise Integration

Software Development Lead

Grupo Beta Honduras

Mar 2010 - Jun 2013 (3 years 3 months)

Built and led a software development team from scratch, setting technical strategy and architecture using Java, Spring, and Hibernate. Designed and delivered multiple systems integrating with ERPs and customer platforms to improve internal data visibility.

Team Leadership Technical Strategy System Architecture Java Spring Framework Hibernate ERP Integration Data Integration API Development

Senior Software Engineer

Hng Systems S. De R.L.

Jan 2009 - Jan 2010 (1 year)

Engineered a highly available (99.9% uptime) distributed transaction system for a major telecommunications client. Designed a modular architecture integrating MySQL, SQL Server, and Oracle databases using Java multithreading.

Distributed Transactions High Availability Multithreading MySQL SQL Server Oracle backend architecture

Head of Development

Proyecto De Administración De Tierras De Honduras (Path)

Jan 2007 - Jan 2009 (2 years)

Led the software team by planning system architecture changes and managing project workloads. Developed and integrated a secure authentication subsystem using Oracle Single Sign-On.

Technical Leadership System Architecture Authentication Java SSO

Co-Founder & Senior Software Engineer

Hng Systems S. De R.L.

Jan 2004 - Jan 2007 (3 years)

Co-founded a software startup and worked directly with clients to define product requirements and deliver tailored solutions. Built enterprise solutions using Java, C#, and Oracle technologies.

Product Requirements Client Engagement Java C# .NET Oracle Enterprise Software Development Solution Delivery Technical Consulting

Senior Java Developer

Proyecto De Administración De Tierras De Honduras (Path)

Jan 2002 - Jan 2006 (4 years)

Contributed to the ground-up development of Honduras’s national land system, an award-winning 3-tier web application. Implemented document management, GIS integration, and secure digital signing capabilities.

Java GIS Integration Document Management Web Development System Integration

Junior Developer

Compañía Azucarera Hondureña S.A.

Jan 1997 - Jan 2002 (5 years)

Handled system analysis, database design, and end-to-end development of custom applications. Integrated solutions with legacy AS/400 infrastructure and industrial hardware.

System Analysis Database Design End To End Solutions Application Development