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Joao Cypriano
@joao_cypriano
Data Engineer: Python, SQL and Data Quality
Portugal
English, Portuguese, Italian
About me
Messy files and unreliable data slow down your business. I bring 5+ years of data engineering experience to cleaning, validating and preparing data you can use with confidence. My background includes Python, SQL, Spark, cloud data pipelines and automated quality checks. Services focus on CSV and product-file cleanup: consistent formats, duplicate checks, validation and a clear record of changes. You receive a prepared file, an exceptions list and practical handover notes. Send a small sample and your target format so we can confirm the scope before ordering.
Skills
Joao Cypriano
Offline •
Average response time: 1 hour
See my services
Data Cleaning
I will clean and validate your product CSV against your import template
Software Testing
I will test your website journeys and report bugs with screenshots
Portfolio
Work experience
Senior Data Engineer
Closer • Full-time
May 2024 - Present • 2 yrs 4 mos
Responsible for implementing, fixing, and optimizing of financial data pipelines, as well performing analytics tasks, for a top 4 sovereign wealth fund using Spark within Palantir Foundry with a Data Mesh architecture design. During this time, we were able to reduce pipeline running times and costs from 20% to 80%, by working closely with other data engineers, business stakeholders and analysts. Also contributed by implementing data quality checks for core datasets, to ensure integrity and detect unexpected changes or corruption.
