Thomas Crha

[ thomascrha.github.io ] · [ thomas@9bitbyte.com ] · [ 0449 856 278 ]

Professional Summary

Senior Engineer with 10+ years of experience in data engineering, machine learning, and infrastructure automation. Delivered scalable solutions that improved efficiency by over 40% in critical projects. Expert in Python, cloud platforms, and DevOps practices, with a proven ability to lead complex projects from inception to deployment. Passionate about driving business outcomes through innovative technology solutions.

Skills

Programming Languages: Python, JavaScript, C#/ASP.NET, Bash, SQL, HTML/CSS
Data Science & Machine Learning: Pandas, NumPy, Matplotlib, Scikit-learn, Hugging Face, AzureML, Argilla, Databricks, Seaborn, Plotly, spaCy
Cloud & Infrastructure: AWS, Azure, Google Cloud Platform (GCP), Docker, Kubernetes, Terraform, Helm, Ansible
Databases: PostgreSQL, MySQL/MariaDB, MSSQL, MongoDB, ElasticSearch
Web Frameworks: FastAPI, Flask, Django, SQLAlchemy, React, HTMX, Vue

Experience

Machine Learning Engineer

QBE Australia – Sydney, NSW (Jun 2022 – Present)
- Built a web application utilizing large language models (LLMs) to summarize and categorize claims-related calls, enhancing operational efficiency.
- Migrated the employee allocation tool from a legacy system to a modern stack using FastAPI and PostgreSQL.
- Redesigned and optimized the property triage tool-chain, significantly improving reliability and usability.
- Implemented a new artifact tagging system to streamline developer operations.
- Led the migration of 10+ applications from Docker Swarm to Kubernetes using Azure AKS, automating deployment with Terraform and improving scalability.

Senior Engineer, Dragonfly Technologies

Mar 2019 - Jun 2022, Sydney, NSW

Working on multiple greenfield projects for various clients based primarily around the automation of network infrastructure (routers, switches etc.). With a focus on designing, creating and implementing back-end solutions and performing BAU Dev-Ops/SRE roles for managing and maintaining clients infrastructure.

Senior Engineer

Dragonfly Technologies – Sydney, NSW (Mar 2019 – Jun 2022)
- Designed and developed Fusion, a distributed system that increased operational efficiency by 40% by managing and monitoring customer network, application, and hardware infrastructure.
- Architected the Discovery Tool, an automation engine for network device inventory, capable of traversing complex network structures.

Full Stack Engineer

Appen Australia – Sydney, NSW (Jan 2018 – Jan 2019)
- Spearheaded improvements to Appen’s language resource tool, Ampersand, during its transition from legacy systems.
- Developed video transcription and lexicon tools, enabling advanced annotation and resource management.

Project Engineer

Appen Australia – Sydney, NSW (Sep 2014 – Jan 2018)
- Designed custom solutions and ETL pipelines for client projects.
- Upgraded Python scripts and applications from Python 2 to Python 3.
- Developed an automated backup system utilizing AWS Glacier to ensure secure data storage.

Owner and Operator

9bitbyte – Sydney, NSW (Jul 2013 – Present)
- Delivered contracting projects, including custom application development, infrastructure optimization, and data analysis.

Achievements

Projects

Education

Certifications