fotis vardikos
@fotisvardikos
I build AI data systems and improve Greek-language model accuracy through linguistic evaluation.
What I'm looking for
I'm building high-performance C++ systems at Alignerr for large-scale AI data pipelines, evaluation workflows, annotation, validation, and quality control.
At xAI, I help improve Grok’s Greek-language capabilities by reviewing and refining hundreds of outputs across grammar, syntax, vocabulary, idioms, cultural nuance, and conversational naturalness. I work with the Grok team to resolve edge cases and improve accuracy and fluency in real-world Greek scenarios.
I'm also pursuing a Physics degree at Aristotle University of Thessaloniki, bringing a scientific and analytical approach to technology, language, and accessibility.
Experience
Work history, roles, and key accomplishments
Design, build, and optimize high-performance C++ systems supporting large-scale AI data pipelines and evaluation workflows. Develop full-stack tooling and backend services for data annotation, validation, and quality control at scale. Collaborate with research, data, and engineering teams to support model training and evaluation infrastructure, identifying bottlenecks and edge cases in system and
Served as dedicated AI Tutor for Greek, directly contributing to the continuous improvement of Grok’s Greek-language capabilities through targeted training and feedback.
Tackled a wide variety of linguistic challenges — including grammar, syntax, vocabulary, idioms, cultural nuances, and conversational naturalness — resulting in measurably higher accuracy and fluency in Grok’s Greek responses.
Taught math and physics to students with a range of learning styles and backgrounds, adjusting explanations and pacing to each student's needs. Built original teaching materials to make abstract concepts concrete and engaging for students at different levels. Used AI tools to help draft lesson materials and explanations, then reviewed and refined the output before using it with students.
Contributed to structured, step-by-step project execution within a small engineering team. Wrote and debugged code in C++ and Python to support automation and problem-solving tasks. Used SolidWorks for design and modeling as part of the project workflow.
Education
Degrees, certifications, and relevant coursework
Aristotle University of Thessaloniki
Bachelor's Degree, Physics
2022 - 2027
Pursuing a Bachelor's degree in Physics with an expected completion in 2027.
Aristotle University of Thessaloniki (AUTH)
Bachelor's Degree, Physics
2022 - 2027
Aristotle University of Thessaloniki (AUTH)
2022 - 2027
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
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