Freddy Mande
Full Stack Software Engineer
Summary
Full Stack Software Engineer with 10+ years of experience building and shipping production systems across three continents. Currently at ESnet / Lawrence Berkeley National Laboratory, building tools that help network engineers provision and manage the infrastructure powering scientific research across DOE national laboratories. Track record of delivering real-time communication platforms, e-commerce solutions, and cross-platform mobile applications.
Skills
Languages
TypeScript, JavaScript, Python, Java, HTML, CSS, SQL
Frameworks
Next.js, React, Angular, Django, Express, Ionic, Tailwind CSS
Data & Real-Time
MongoDB, MySQL, PostgreSQL, Firebase, Socket.IO, D3.js
Infrastructure
AWS, Docker, GitHub Actions, Linux, Heroku, GCP
Education
Cosumnes River College
AS in Computer Science · May 2019
UNILU
BS in Computer Information Science · Mar 2014
Languages
English · French · Swahili
Experience
Full Stack Software Engineer
ESnet at Berkeley LabNov 2023 - Present
- Build and maintain internal tools that accelerate scientific research by enabling network engineers to provision and manage high-performance networks across DOE national laboratories
- Lead a full UI revamp of engineering tools used daily by the network operations team, improving workflow efficiency
- Collaborate with network engineers and stakeholders to translate operational needs into reliable, production-ready software
- Foster team growth through active knowledge sharing and mentorship initiatives
Aug 2022 - Jun 2023
- Led web application development, achieving 15% reduction in development time and 20% higher user satisfaction
- Delivered customized solutions resulting in 30% increase in client satisfaction and 15% increase in repeat business
- Applied Agile methodologies to accelerate delivery and market entry
Full Stack Developer
NumeriixContract/RemoteJan 2021 - Jul 2022
- Built scalable API with Node.js, Express, and MongoDB handling substantial traffic loads
- Integrated real-time data transfer via Socket.IO; reduced storage costs 50% with Firebase
- Created cross-platform mobile apps with Ionic, cutting development time in half
Full Stack Developer
Visions In EducationOct 2019 - Dec 2020
- Improved user satisfaction 15% and reduced system downtime by 20%
- Enhanced network security by 20% through infrastructure setup and maintenance
- Managed DNS for 99.9% website uptime; improved traffic 15% and lowered dev costs 20%
Feb 2018 - May 2019
- Built Node.js/Express/MongoDB backend delivering 20% performance boost
- Developed mobile apps with Ionic improving user engagement by 15%
- Implemented real-time communication via Socket.IO, reducing dev time by 25%
Backend Developer
JE FashionContract/RemoteApr 2017 - Feb 2018
- Designed web and API applications raising client satisfaction by 15%
- Overhauled e-commerce UI leading to 25% increase in conversion rates
Nov 2015 - Apr 2017
- Optimized e-commerce applications achieving 30% reduction in load times and 15% increase in page views
- Reduced critical defects by 25% through systematic identification and resolution via JIRA and Git
- Improved database performance with SQL optimization: 15% faster queries, 10% better order processing