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Theodoros ZavosTZ
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Theodoros Zavos

@theodoroszavos

Senior full stack engineer at Moosend building .NET 8 microservices and secure AWS service integrations.

Greece
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At Moosend, I design, build, and run distributed .NET 8 and ASP.NET Core microservices on AWS. I implement service authentication with OAuth 2.0, OpenID Connect, JWT, mTLS, and certificate-based authentication.

I led upgrades of core .NET services and own build and release pipelines in TeamCity and Jenkins. I also tune database performance and maintain BDD test coverage with Gherkin.

At Intrasoft International S.A., I delivered full stack loan-sector web solutions for the National Bank of Greece in a regulated banking environment. I also designed and documented REST APIs and built Selenium test automation.

Experience

Work history, roles, and key accomplishments

BL
Current

Co-Founder & Principal Engineer

BitCraft Solutions Ltd

Aug 2025 - Present (1 year 3 months)

Co-founded a software and AI consultancy; define technical standards and review practice across client engagements. Run technical health checks: audit architecture, code quality, infrastructure, and engineering process, and deliver prioritised improvement roadmaps.

PS

Senior Backend Engineer (Contract)

PwC — IDIKA S.A.

Jun 2025 - Dec 2025 (6 months)

Designed and built backend services and APIs for national-scale public health systems where security, auditability, and reliability governed every design decision. Delivered against formal specifications and fixed milestones alongside client stakeholders and a Big Four delivery team.

MO

Software Engineer

more.com

Jan 2022 - Sep 2022 (8 months)

Built pricing and billing microservices for a European cloud payments platform on Azure with Cosmos DB, in transaction paths where correctness was critical.

IS

Software Engineer

Intrasoft International S.A.

Apr 2020 - Dec 2021 (1 year 8 months)

Delivered full stack loan-sector web solutions for the National Bank of Greece using .NET Core and .NET Framework with ReactJS, within a regulated banking environment. Designed and documented REST APIs, built Selenium test automation, and took project leadership responsibilities.

NE

PHP / Magento 2 Developer

Netsteps

Jun 2017 - Mar 2020 (2 years 9 months)

Built backend and frontend modules, REST and SOAP APIs, and third-party ERP integrations for a certified Magento solution partner; handled deployment and DevOps duties.

Education

Degrees, certifications, and relevant coursework

University of Patras logoUP

University of Patras

Bachelor of Science, Computer Engineering & Informatics

2012 - 2017

BSc in Computer Engineering & Informatics. Thesis on evaluation of real-time data processing using deep learning algorithms and techniques.

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