Joseph Núñez
Senior Lead Software Engineer at JPMorganChase
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolJoseph Núñez is a Senior Lead Software Engineer based in Madrid with 13 years of experience designing and implementing scalable, cloud-based distributed systems. He has progressed through senior and leadership roles at firms including JPMorgan Chase, Sinch, and ZeroFOX, combining hands-on backend engineering with team leadership and delivery ownership. Joseph contributes to notable open-source work such as fixes and QoS enhancements for the widely used MQTT.js client, reflecting deep reliability and protocol-level understanding. Known for a clean, collaborative approach, he consistently drives robust production deployments and improves library ergonomics and QA. His career blends enterprise-scale financial and communications systems experience with startup agility, and he brings a pragmatic focus on making complex distributed features operable and testable.
14 years of coding experience
11 years of employment as a software developer
Universidad Central de Venezuela
Github Skills (10)
unit-testing10
mqtt10
nodejs10
javascript10
mqttnet10
testing10
server-client9
server-client-communication9
client-server9
server-communication9
Programming languages (6)
Github contributions (5)
mqttjs/MQTT.js
May 2014 - Aug 2014
The MQTT client for Node.js and the browser
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:6 commits in 2 months
Contributions summary:Joseph focused on improving the MQTT.js client library's reliability and functionality. They addressed instantiation issues within the `MqttClient` class, ensuring it functions correctly with and without the `new` operator. Furthermore, the user implemented and tested features related to subscriptions, specifically allowing for individual QoS levels per subscription. They also made adjustments to the subscription handling to ensure the callback function is correctly handled.
mqttnodejsjavascriptnodejs-librarymqtt-broker
jeloou/mqtt-cli
Mar 2014 - Jul 2014
Contributions:26 commits in 3 months
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