João Fernandes
Director Of Engineering at Five9
Porto, Porto, Portugal
Summary
👤
Senior🎓
Top SchoolJoão Fernandes is a Director of Engineering with 14+ years of experience scaling data and engineering organizations across startups and enterprises, currently leading Five9’s core data platform in Porto. He architects high-throughput, cost-efficient systems that ingest millions of events per second and reduced cloud spend by ~40% through FinOps-driven redesigns. João has repeatedly grown teams rapidly (5→~40 engineers in 18 months) and reorganized them into domain-focused, autonomous units that ship faster while mentoring senior engineers and managers. His technical strengths span distributed data platforms, machine learning and AI, and he enjoys implementing ideas from research into production—sharing findings via his blog Calculated Randomness and a local ML meetup he founded. Comfortable with both hands-on architecture and organizational design, he blends deep technical judgment with a leader-leader culture rooted in trust and delegation.
11 years of coding experience
12 years of employment as a software developer
Master's Degree, Advanced Software Engineering, Master's Degree, Advanced Software Engineering at King's College London, U. of LondonBachelor's Degree, Software Engineering, Bachelor's Degree, Software Engineering at University of South Wales
Portuguese, English, Spanish
Github Skills (18)
pytorch10
machine-learning10
datasets10
deep-learning10
torchvision10
computer-vision10
addon5
minecraft5
kindle2
pdf2
epub2
pkgbuild2
css1
scrolling1
keyboard1
Programming languages (4)
Github contributions (5)
joaoflf/dotfiles
Oct 2018 - Oct 2024
Contributions:37 pushes, 1 branch in 6 years
joaoflf/resnet-pytorch
Dec 2018 - May 2019
Contributions:15 commits, 11 pushes, 1 branch in 4 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.