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
    Python 6 years
  • Data Engineering 4 years

Other skills

  • NumPy
    NumPy 3 years
  • Scikit-learn
    Scikit-learn 3 years
  • AWS CloudFormation
    AWS CloudFormation 2 years
Andras

András N.

Hungary

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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 Docker
    • AWS AWS
    • MSSQL MSSQL
    • Microservices
    • Python Python
    • AWS SQS AWS SQS
    • SQL SQL
    • AWS Lambda AWS Lambda
    • AWS S3 AWS S3
    • Bash Bash
    • Data Engineering
    • Git Git
    • ETL ETL
    • REST API REST API
    • AWS CDK AWS CDK
    • AWS VPC AWS VPC
    • AWS EC2 AWS EC2
    • AWS ECR AWS ECR
    • Amazon CloudWatch Amazon CloudWatch
    • Pytest Pytest
    • Pydantic Pydantic
    • Serverless
    • Data Quality
    • Amazon Bedrock Amazon Bedrock
    • Cursor Cursor
    • GitHub Copilot GitHub Copilot
    • AWS ECS Fargate AWS ECS Fargate
    • AWS IAM AWS IAM
    • AWS CloudFormation 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 Pandas
    • Data Engineering
    • ETL ETL
    • Streamlit Streamlit
    • Plotly Plotly
    • Blockchain Blockchain
    • Ethereum 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 AWS
    • NumPy NumPy
    • Keras Keras
    • Pandas Pandas
    • Data Engineering
    • BigQuery BigQuery
    • InfluxDB InfluxDB
    • Scikit-learn Scikit-learn
    • Matplotlib Matplotlib
    • ETL ETL
    • Machine Learning Machine Learning
    • BeautifulSoup BeautifulSoup
    • Pytest Pytest
    • Plotly Plotly
    • Blockchain Blockchain
    • Jupyter 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

  • Aave Liquidity Provider TVL Point Tracker - 1

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