Kostas Lekkas
Founder at Nevua Software
Tel-Aviv District, Israel
Summary
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Rockstar🎓
Top SchoolKostas Lekkas is a founder and seasoned software engineer with 12 years of experience building production systems, tooling, and IoT platforms from low-level networking to developer-facing CLIs. He led engineering and support efforts at balena—maintaining the device connectivity backend, shaping onboarding and hiring processes, and shipping user-facing CLI features such as an ssh command and verbose flags for better UX. At Meta he operated as a production engineer, and earlier roles include kernel-level networking work at Citrix and research-driven embedded systems at CRT. Comfortable leading distributed teams, he also built a constraint-optimization scheduling system to coordinate a fully remote 30-person support rota. Now based in Tel Aviv and building Nevua Markets, he blends deep systems knowledge with product-minded engineering and active open-source contributions. His career shows a rare mix of hands-on low-level protocol work and practical tooling that improves developer and operator workflows.
12 years of coding experience
10 years of employment as a software developer
Diploma Computer Networking and Telecommunications Engineering, Diploma Computer Networking and Telecommunications Engineering at University of Thessaly
Greek, English
Stackoverflow
46reputation
3kreached
1answer
0questions
Github Skills (12)
cli10
command-line-interface10
javascript10
coffeescript10
ssh10
command-line10
nodejs9
docker8
dockers8
git7
docker-compose6
networking6
Programming languages (14)
Github contributions (5)
balena-io/balena-cli
Apr 2016 - Sep 2017
The official balena CLI tool.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:77 commits, 44 PRs, 98 pushes in 1 year 4 months
Contributions summary:Kostas primarily contributed to the balena-cli tool by implementing and refactoring several commands. They removed deprecated features in the sync command and added a new `ssh` command to access device containers. Further development includes adding a `--verbose` flag to the `ssh` and `sync` commands, enhancing the user experience. Additionally, the user made adjustments to the local configuration commands.
golangbalenacli-toolbalena-clicli
balena-os/resin-device-toolbox
Sep 2016 - Apr 2017
Contributions:77 commits, 44 PRs, 54 pushes in 6 months
cli-toolboxtoolboxresinresinoscli
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