John Ulvoy
Senior Snowflake Data Engineer | Data Vault
Salary / Daily rate
The Hague, Netherlands
Freelance
Skills
Languages
About me
Intro
Cloud data engineer with 15+ years specializing in AWS, Snowflake, and Data Vault 2.0 architectures. Expert in energy trading systems (ETRM/Aligne) with proven success at major enterprises like Shell, Vodafone, and ESB. Ready to transform your data infrastructure with Python, SQL, and modern cloud analytics solutions.
Work experience
Snowflake Data Engineer - BI & Datascience (Snowpark, Python and Data Vault 2.0)
AyvensFreelance
Sep 2023 - Dec 2024
1 year 4 months
Almere, Netherlands
Sr. AWS Data Analyst - Data & AI
VodafoneZiggoFreelance
Sep 2022 - Mar 2023
7 months
Utrecht, Netherlands · Hybrid
AWS Data Architect - Analytics
National Broadband IrelandFreelance
Dec 2021 - Aug 2022
9 months
Remote, OR 97458, USA
Skills: GitHub · SQL · NoSQL · Amazon S3 · AWS · Data Analysis · Telecommunications · Amazon Athena · Tableau · Extract, Transform, Load (ETL)
Snowflake Data Engineer - Compass (Analytics)
SpeakapFreelance
Mar 2021 - Jul 2021
5 months
Remote, OR 97458, USA
Aligne test analyst
MVV Trading GmbHFreelance
Feb 2020 - May 2020
4 months
68 Mannheim, Germany
Business Analyst (ISEM, Front office, CFD, Capacity market, Pump storage, Bid Manager, Aligne)
ESB
May 2017 - May 2018
1 year 1 month
Skills: Aligne · ETRM · Data Analysis · Commodities
Aligne Consultant
Azienda Elettrica Ticinese
Apr 2016 - Dec 2016
9 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Zainet Analyst (Upgrade to Aligne)
E.ON
May 2015 - Oct 2015
6 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Zainet Reporting Architect (MTM reporting)
E.ON
Dec 2014 - Jan 2015
2 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Aligne Consultant
Shell
Aug 2013 - Mar 2014
8 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Consultant
SunGard Financial Systems
Nov 2011 - Mar 2013
1 year 5 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Implementation Consultant (Greenfield implementation)
Enovos Luxembourg SA
Aug 2012 - Jan 2013
6 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Business Analyst (GL interface, MTM reporting)
Noble Group
Apr 2012 - Aug 2012
5 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Associate
SunGard Global Services
Jan 2008 - Oct 2011
3 years 10 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Information Analyst
Eneco
Sep 2010 - May 2011
9 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Information Analyst (Gas Balancing, Efet.net, Futures)
Eneco
Mar 2008 - Dec 2009
1 year 10 months
Skills: Aligne · ETRM · Data Analysis · Commodities
Application Specialist
Delta Netwerkbedrijf
May 2004 - Dec 2007
3 years 8 months
Skills: Aligne · Trayport · ETRM · Data Analysis · Commodities
Director of Quality Assurance, Europe
Caminus LLC
Aug 1999 - Jul 2002
3 years
Skills: Aligne · ETRM · Data Analysis · Commodities
Technical Manager
Zainet Software Inc
Aug 1996 - Dec 1998
2 years 5 months
Skills: Aligne · ETRM · Commodities
Education
Norwegian University of Science and Technology (NTNU)
Master's Degree
1987 - 1992
5 years 1 month