Costin Zaharia
Staff Software Developer at AdsWizz
Bucharest, Romania
Summary
👤
Senior🎓
Top SchoolCostin Zaharia is a Staff Software Developer based in Bucharest with 10 years of experience building resilient Java and Spring Boot backends for enterprise systems. He designs and implements scalable microservices, orchestration layers, and unified authentication solutions—most notably reducing client onboarding from weeks to hours and standardizing AWS Cognito across teams. Comfortable across the stack, he pairs strong backend expertise with JS, Go, SQL, Docker and Kubernetes to streamline DevOps and delivery workflows. He has led PoC and Scrum teams in safety-critical domains like railway communications and maintained full ownership of ad-serving and monetization ecosystems at AdsWizz. Known for pragmatic refactoring, clear technical documentation, and mentoring, he actively turns complex product requirements into maintainable, future-ready solutions. His background in cybersecurity and business gives him a practical edge in designing secure, operable systems that map to real business needs.
10 years of coding experience
6 years of employment as a software developer
Master's degree, IT&C Security | Cybersecurity Masters, Master's degree, IT&C Security | Cybersecurity Masters at Bucharest University of Economic StudiesColegiul National "Mihai Viteazul"
English
Github Skills (35)
pattern7
gateway7
persistent6
xrandr6
java6
saga5
state-machine5
connected5
smartphone5
tablet4
business-process4
power-management4
workflow-automation3
x113
specification3
Programming languages (8)
Github contributions (5)
zahariaca/db_docker
Dec 2018 - May 2020
Dockerfiles for my test projects that involve databases
Contributions:5 PRs, 13 pushes, 2 branches in 1 year 5 months
stress-testingmysqltestingdockerdatabases
zahariaca/db_roadmap
Oct 2018 - May 2019
Java + Db training repo
Contributions:4 PRs, 26 pushes, 3 branches in 6 months
javadbmsdatabase-accesstraining
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