Nick Zisis
Senior Member Of Technical Staff at Oracle
Thessaloniki, Macedonia and Thrace, Greece
Summary
👤
Senior🎓
Top SchoolNick Zisis is a Senior Member of Technical Staff with 11 years of experience designing and shipping robust backend and mobile systems, currently at Oracle in Thessaloniki. He specializes in Java, Android, and cloud-native architectures, with deep hands-on work in voice biometrics, authentication and anti-fraud systems from his tenure leading Omilia’s deepVB project. Nick has a strong track record integrating complex multi-project architectures, building CI/CD pipelines and automations with Ansible, and ensuring backward-compatible database migrations using Hibernate and Liquibase. Earlier roles include architecting mobile and data-intensive applications (Xamarin, Realm, PostgreSQL) and delivering production Android apps with real-time integrations. He combines systems-level thinking with practical implementation skills, often bridging DevOps and development to drive deployments. Fluent in both product-focused mobile work and enterprise backend engineering, he brings a rare blend of voice-security domain expertise and cross-stack execution.
11 years of coding experience
7 years of employment as a software developer
Bachelor Computer Science, Bachelor Computer Science at Aristotle University of Thesaloniki
English
Stackoverflow
288reputation
37kreached
19answers
2questions
Github Skills (25)
custom-view7
firebase6
android6
calendar-view6
facebook-graph-api6
firebase-realtime-database6
android-fragments6
java6
facebook6
facebook-android-sdk6
authentication6
firebase-authentication6
sticky5
android-library5
calendars4
Programming languages (2)
Github contributions (5)
nzisis/E-Nurse-Project
Dec 2014 - Jul 2015
Contributions:28 commits, 10 pushes in 6 months
nzisis/HealthAdvisor
Feb 2015 - Nov 2015
Contributions:48 pushes, 1 branch in 8 months
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