PZPanagiotis Zisis
@panagiotiszisis
Senior back-end engineer specializing in scalable TypeScript microservices.
NetherlandsWhat I'm looking for
I am a senior software engineer with 6+ years focused on back-end development, distributed systems, and data-driven solutions for corporations, scaleups, and startups. I specialize in TypeScript and Node.js and have a strong track record delivering scalable microservices and low-latency systems.
At Getir I built high-performance microservices supporting over 1.5 million daily active users and improved reliability by migrating critical data from MongoDB to PostgreSQL with custom validation scripts. At IBM I led integrations between private blockchain networks and a central bank settlement system and created internal dashboards to improve operational workflows.
Most recently at Expatfile I implemented compliant, automated integrations for regulatory filing workflows, reduced operational overhead, and introduced robust back-end validation that significantly lowered data-related issues. I value pragmatic engineering, measurable impact, and knowledge sharing.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
Expatfile
Jul 2024 - Present (1 year 7 months)
Implemented automated integrations for Streamlined Foreign Offshore Procedures compliance, reducing operational overhead and penalties while improving data validation to prevent invalid or missing submissions.
GESoftware Engineer
Getir
Jun 2022 - Jul 2024 (2 years 1 month)
Built high-performance microservices and pricing systems that improved customer retention and acquisition for a platform with >1.5M daily active users; migrated critical data from MongoDB to PostgreSQL to boost reliability.
IBLed integration of a private blockchain with a central bank settlement system (Target2) to enable large financial transactions and built internal dashboards for asset management and EV smart charging profiles.
Education
Degrees, certifications, and relevant coursework
UPUniversity of Piraeus
Bachelor of Science, Economics
2015 - 2018
Completed a Bachelor of Science in Economics with coursework focused on economic theory and quantitative methods.
Tech stack
Software and tools used professionally
Availability
Location
NetherlandsAuthorized to work in
Job categories
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