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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
Nov 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 front-end development of the company's multilingual web portal, presenting electrical, automation, and digital services with full i18n localization
- Worked directly with stakeholders to turn designs and service offerings into production pages, delivering iteratively
- Shipped the site that still serves as the company's public presence today
Full Stack Developer
NumeriixContract/RemoteJan 2021 - Jul 2022
- Designed and built the platform's API with Node.js, Express, and MongoDB
- Added real-time data updates with Socket.IO and moved file storage to Firebase to simplify hosting
- Shipped iOS and Android apps from a single Ionic codebase instead of maintaining separate native apps
Full Stack Developer
Visions In EducationOct 2019 - Dec 2020
- Developed and maintained the school's web applications across Python/Flask, Angular, and PHP
- Owned server infrastructure, DNS, and site availability for the school's public web presence through the shift to remote learning
- Set up and hardened server infrastructure, tightening access controls and keeping systems patched
Feb 2018 - May 2019
- Built the auction platform's backend with Node.js, Express, and MongoDB
- Implemented real-time updates with Socket.IO so auction activity reached all participants instantly, replacing manual page refreshes
- Developed companion mobile apps with Ionic and Firebase
Backend Developer
JE FashionContract/RemoteApr 2017 - Feb 2018
- Designed and built the e-commerce backend and API with Node.js, Express, and MongoDB
- Overhauled the storefront UI, modernizing the browsing and checkout experience
Nov 2015 - Apr 2017
- Optimized product and checkout pages on one of South Africa's largest e-commerce platforms, cutting load times through query tuning and front-end optimization
- Tracked down and resolved critical production defects through systematic, JIRA-driven triage
- Improved database performance for search and order processing with targeted SQL optimization