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András N.
Data Engineer
András is a Data Engineer with seven years of experience in AWS cloud infrastructure and Python development. He has modernized legacy data systems by building and enhancing data platform infrastructures, as well as migrating and operating scalable data collection pipelines.
He specializes in designing serverless architectures, implementing robust ETL pipelines, and establishing comprehensive monitoring systems to ensure reliability and performance.
His expertise spans both traditional and Web3 domains, where he has delivered data solutions for DAOs and healthcare organizations. With strong DataOps capabilities, András implements structured logging, automated alerting, and efficient CI/CD pipelines that significantly enhance data reliability and operational efficiency.
Main expertise
- Data Science 6 years
- Python 6 years

- Data Engineering 4 years
Other skills
- NumPy 3 years
- Scikit-learn 3 years
- AWS CloudFormation 2 years
Selected experience
Employment
Software Engineer
Diligent - 2 years 10 months
Diligent is a global provider of governance, risk, and compliance software solutions.
- Enhanced data accessibility by designing and building serverless data infrastructure and pipelines, ensuring reliable data flow and retrieval for key stakeholders.
- Overhauled data fetcher logic by transitioning data API fetchers from VBScript to Python, setting up database ingestion, and integrating scrapers into cloud infrastructure. Resolved issues related to data quality, performance, and rate limits using Python, AWS Lambda, CloudWatch, and MS SQL.
- Built, improved, and maintained data operations processes, analyzing and systematizing the issue resolution pipeline. Reduced issue resolution time and improved data and code pipeline reliability and maintainability using AWS CodePipeline, CloudWatch, EventBridge, SNS, Lambda, and Slack. Orchestrated multi-month backfills.
- Designed structured logging, notifications, and dashboards for comprehensive data and infrastructure monitoring.
- Reduced code build time by 75% through refactoring and expanded CI/CD capabilities to improve build reliability and developer experience using AWS CodeBuild, Lambda, CodeArtifact, ECR, Bash, and the GitHub API.
Technologies:
- Technologies:
Docker
AWS
MSSQL
- Microservices
Python
AWS SQS
SQL
AWS Lambda
AWS S3
Bash
- Data Engineering
Git
ETL
REST API
AWS CDK
AWS VPC
AWS EC2
AWS ECR
Amazon CloudWatch
Pytest
Pydantic
- Serverless
- Data Quality
Amazon Bedrock
Cursor
GitHub Copilot
AWS ECS Fargate
AWS IAM
AWS CloudFormation
Data & Insights
Aragon DAO - 6 months
Aragon DAO builds governance infrastructure for decentralized organizations (DAOs).
- Developed reporting pipelines for DAO governance analytics, combining on-chain and off-chain data sources.
- Built a financial oversight dashboard using Python, Pandas, Dash, and Anvil, enabling real-time transparency for community stakeholders.
- Automated data retrieval from Discourse, Discord, Dework, and Dune, ensuring accurate and timely reporting for decentralized governance.
- Delivered high-quality data insights to support DAO decision-making, increasing transparency and accountability.
Technologies:
- Technologies:
Pandas
- Data Engineering
ETL
Streamlit
Plotly
Blockchain
Ethereum
Data Scientist & Engineer
Freelancer, Remote - 3 years 11 months
Worked independently on advanced analytics and engineering projects across multiple industries.
- Resolved data challenges across finance, Web3, DeFi, health, and energy sectors.
- Built an analytics pipeline for Terra arbitrage opportunities by collecting, processing, and analyzing on-chain Terra/Cosmos data using Flipside, Python, and pandas.
- Developed a time-series glucose forecasting model, achieving prediction accuracy comparable to market-leading commercial medical devices using Python, pandas, and scikit-learn.
- Built a reporting pipeline to assess a medical treatment device used in clinical trials, generating actionable insights to inform clinical decisions and device performance evaluations using Python, pandas, matplotlib, seaborn, and Jupyter.
- Engineered an evaluation pipeline for machine learning feature engineering methods using Python and scikit-learn.
- Wrote technical drill-down blog posts on Machine Learning, MLOps, SQL, and Python.
Technologies:
- Technologies:
AWS
NumPy
Keras
Pandas
- Data Engineering
BigQuery
InfluxDB
Scikit-learn
Matplotlib
ETL
Machine Learning
BeautifulSoup
Pytest
Plotly
Blockchain
Jupyter
Junior Business Analyst/Technical Writer
Dorsum - 2 years 4 months
Dorsum is a software company delivering wealth management and investment platforms.
- Created documentation for a B2B wealth management SaaS, ensuring clarity and usability for both technical and non-technical stakeholders.
- Developed B2B business proposals highlighting platform capabilities and wrote white papers to support client engagement and content marketing initiatives.
- Contributed to regulatory analysis and compliance documentation, ensuring solutions aligned with banking sector requirements.
- Supported cross-functional teams with technical writing and marketing content, strengthening client engagement.
Education
Doctor Of PhilosophyScience & Technology Studies
The Open University, UK · 2010 - 2016
MSc.Science & Technology Studies
Lancaster University · 2009 - 2010
MSc.Sociology
Eötvös Lóránd University · 2004 - 2009
MSc.Business & Economics
Budapest University of Technology and Economics · 2002 - 2007
Portfolio
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