Stelios Christodoulou

| About | Profile Pages | Publications | Presentations/Talks | Skills | Background/Experience |

About

Hello and welcome to my personal site. I currently work as a full stack Data Analyst and Operations Engineer for a global Mobile Satellite Communications Operator. I have subject matter expertise in:

• Spatial, timeseries, telecommunications and computer networks data
• Mobility/Transport: Maritime, Aviation, rail and road.
• GNSS receiver analytics for interference detection and GNSS constellation health monitoring.
• Signal measurements: aggregated sensor network carrier monitoring.
• Weather/Climate: Arctic sea ice concentrations, rain fade, rain diversity switches.

My other pages

• Linked In profile
• Github portfolio

Publications

• Advice to Government on improving rail passenger access to data services: Assessment of passenger numbers at different places along the mainline rail network. Ofcom (2018)
• Frequent locations of oceanic fronts as an indicator of pelagic diversity: Application to marine protected areas and renewables Miller, P.I. & Christodoulou, S. (2014) Marine Policy. https://doi.org/10.1016/j.marpol.2013.09.009

Presentations and Talks

• After the Titanic: Maritime Distress and Safety. Talk to primary school students on GMDSS.
• Open Data on GPS interference: Scandinavia and the Baltics session in Open Data Camp Edinburgh 2025
• Basic Time-series Analysis in Pandas lightning talk in PyData London 2025

Skills

• Python: Standard library, (Geo)Pandas, Jupyter, SciPy, pip, sklearn.
• Data Management: SQL, dbt, PostGIS, Hadoop (Pig, Hive).
• Visualisation: Tableau (Desktop, Server), QGIS, Excel.
• Google Cloud: BigQuery, Storage, IAM, Monitoring, Virtual Machines, Notebooks.
• Service and Project Management: Github, ITIL 4, Continuous improvement (Lean Six Sigma), Agile (Jira).
• Diagrams: Lucid Charts, Mermaid.
• Corporate automation: MS Power Automate, Slack Workflows.
• Music: Guitar, Recording, Live sound engineering, Audacity, Musescore, Lilypond.
• Languages: native Greek, professional fluent English, beginner French.

Academic background and professional experience

I completed a 4 year integrated masters M.Eng in Electrical and Information Engineering at the university of Cambridge. Currently in Viasat/Inmarsat. Ex-Ofcom, ex-Inmarsat, ex-PML, ex-Broadcom.

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