Partitioned Hash Join
A partitioned hash join implementation for an in-memory columnar database focused on scalable execution.
View repositorySoftware Engineer @ Fivetran
Work across data transformation, query execution, table formats and analytical infrastructure, while also exploring compilers, machine learning, quantum computing and app development.
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01
Projects
Selected GitHub projects.
Tinkering with databases, compilers and machine learning.
Question Answering Transformers
BERT-based span entity and relation prediction over Wikidata, ending in SPARQL query generation.
View repositoryMiniJava LLVM Compiler
A MiniJava-to-LLVM compiler with semantic analysis, following the visitor pattern for LLVM IR generation.
View repositoryKiki's Delivery Service
A raylib side-scrolling platformer using custom ADTs written in C.
View repository02
Apps
Shipped apps.
iOS apps spanning games and productivity tools.
Xeri (ξερή)
The classic Greek card game for iPhone, available with multiplayer mode.
Open project pageHabits
A habit planner and heatmap tracker for weekly planning.
Open project pageDiloti (δηλωτή)
A faithful take on the classic Greek card game for iPhone.
Open project page03
Open Source
Contributions.
Data transformation, table formats and cross-warehouse interoperability.
SQLMesh
Main contributor to SQLMesh, around query planning, model execution and SQLGlot-based AST parsing.
View repositoryDuckDB Iceberg
Iceberg-side DuckDB work around parallel writes, extended type support and schema evolution.
View repository05
Research
Quantum Neural Networks.
Qudit-based feature maps and classification.
The Gell-Mann feature map of qutrits
A qutrit feature map using Gell-Mann rotations for classification tasks.
ReadClassification of data with a qudit
A geometric approach to qudit-based machine learning and classification.
Read⚛︎ Overview
The research mainly explores Gell-Mann operators, quantum kernels and stacked PQC layers for qudit-level quantum neural networks. The parameterized quantum circuits encode data through feature maps, while variational parameters are optimized classically. Implementations of the quantum circuits are available on GitHub.
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