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Nikolas Tsakiris

@nikolastsakiris

Machine learning–focused software engineer building scalable data pipelines and predictive models for real-world impact.

Greece

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What I'm looking for

I seek a data-centric role where I can apply ML and scalable pipeline expertise, contribute to impactful products, and grow in collaborative, research-informed teams.

I am a software engineer specializing in machine learning and data engineering, with experience building scalable pipelines in GCP and predictive models using TensorFlow, Keras, and Python. My work includes projects across healthcare and autonomous systems, where I delivered models that reached 80% accuracy and pipelines that improved product performance by 5–10%.

I have practical experience as an ML/Data Engineer contractor and in research and internship roles, plus system administration and automation experience from service with the Hellenic Army. I bring a blend of research-driven projects (deep-fMRI, drAIve) and production-focused engineering (BigQuery, Airflow, Kubernetes) to solve complex, data-centric problems.

Experience

Work history, roles, and key accomplishments

ML/Data Engineer

Margera

Apr 2025 - Jul 2025 (3 months)

Designed and implemented scalable GCP/BigQuery data pipelines and periodic data ingestion/cleaning; built predictive models achieving 80% accuracy that enabled 5-10% increases in conversion rates and optimized budget allocation.

Python BigQuery GCP)ETL Data Cleaning TensorFlow Keras Automation)

IT Services Specialist

Hellenic Army

Jul 2024 - Apr 2025 (9 months)

Maintained hardware and provided support, performed system administration and automation via shell scripting, supervised Kubernetes clusters and contributed to demand forecasting initiatives during mandatory service.

System Administration Shell Scripting Kubernetes Linux Windows Server Automation)Active Directory

Data Science Intern

DataViva

Nov 2021 - Apr 2022 (5 months)

Developed custom datasets to support data science projects, enabling downstream analytics and research workflows for the organization.

Data Engineering Python SQL Data Cleaning ETL

Education

Degrees, certifications, and relevant coursework

International Hellenic University

Master of Science, Web Intelligence

2022 - 2024

Activities and societies: M.Sc. project: MeDiDtrace (decentralized identity); coursework in web intelligence and data analytics.

Completed an M.Sc. in Web Intelligence with coursework and a project on decentralized identity (MeDiDtrace), focusing on web-scale data and intelligent systems.

International Hellenic University

Bachelor of Engineering, Computer Science

2016 - 2022

Activities and societies: B.Eng. projects: deep-fMRI (ML on brain data), drAIve (autonomous driving); involvement in data analytics and software development projects.

Earned a B.Eng. in Computer Science with projects applying machine learning to brain data (deep-fMRI) and autonomous driving methods (drAIve).