stephane rohmer
Makes your data speak
49 years old
Toulon (83000) France
Professional Status
Employed
Available
About Me
I consider myself as a data enthusiast. I have been immersed into an unbounded technical environment for a year. I am keen to help you out with your data and give the insight you need.
Data Scientist
Orange
Since August 2018
- Tuning of machine learning algorithmes for anomalies detection and automatic suggestion of corrections (clustering, svm, classifiers)
- Build of a Qlik dashboard for full monitor of network deployement (quality of service, efficiency of subcontractors, followup of spare parts usage and inventory)
- Data clean up and embedding in order to perform a better tuning of algorythm and better forecast of delivery time and spare parts consumption
Life Cycle Prediction
Valeo
November 2017
to June 2018
- Forecast of the end of life of a product sold by Valeo.
- 14000 references automatically clustered with spectral algorithm, optimized entropy
- 14000 time series analyzed and processed with kalman filter
- benchmark of predictive algorithms:
linear regression, support vector machine, neural network (MLP)
Chief Of Mission
Orange Marine
November 2009
to September 2017
World Wide
- Big Data related: development of an application that predicts weather contingencies and operation duration based on 18 years of weather records history and safety working limits. Parameters taken into account: wind speed, wind direction, wave hight, wave direction, curent strength and direction.
- Offshore management of lay and repair operation of submarine cable
- Involved on bids in reponse to calls for tenders mainly on risk analysis and operationnal planning
- Accountable for the high availability of the submarine remote operating vehicle, and all jointing and testing equipment.
- Work in multicultural environment (Japan, Norway, UK, Germany, USA, Turkey, Greece, Indonesia, Morocco, South Africa ...)
- Achievements:
96% of operation within scheduled time
4.6/5 is my average rating by customers
Application Business Owner
Orange
April 2005
to March 2009
Lyon
- Project Owner of the main tool that describes the wired network of Orange France. That tool was directly used by more than 3 000 users daily and it was interfaced with more than 150 other applications
- Management of the merging of two huge datasets into one single tool that describes exhaustively the wired network of Orange.
- Business Plan: highlight business opportunity, accountable of ROIC of IT investment.
Yearly Budget management > 2 millions euros - Improvement of Network and Platform supervision tools. Put in place data flow aggregator and alarm correlation system. Reduction from 48 to 2 supervision -interfaces
- Change Management: set training and communication plans
- Roadmap evolution: manage according to finance, time and technical constrains the product roadmap.
- Increasing user satisfaction (from 40% to 85%) mainly on HMI improvement, and service availability
- deployement of tools for realtime monitoring of TVoIP.
150 TV streams over 5000 dslam on real time monitoring
Mobile Network BSS and OSS Test Manager
Orange Labs
March 2001
to April 2005
Paris
- Management of the test bed, availability, interconnexion and compatibility, test for commissioning new releases or investigation of problem on life network
- Integration specification and test strategy writing in order to implement vendor specific tools to Orange Supervision Network
- High expertise on the use of network protocol analysis probes.
- Adaptation of test strategy and its optimization in order to match time requirement. I succeed in mutualizing some of the acceptance and integration test, and improving automatisation.
- Configuration Management
- Fault Management
- Performance Management
Technical IS Project Manager
DutchTone
July 1999
to August 2000
Den Haag
Netherlands
- Integration of supervision tools based on protocol Analysis
- Definition of indictors based low level protocol messages. Early adopter of the solution, we brought a lot of the Network Operator knowledge. The indicators I drew served QoS analysis, Fault detection, Marketing purpose, and Fraud detection.
Provides to me the updates in regards of latest possibilities offered by Artificial Intelligence algorithm for BigData analysis. Distributed computing, Cybersecurity, Machine Learning, Deep Learning, NoSQL, Internet Of Things, dataviz.
Learn more
Acquisition of working knowledge in regards of ticketing, economy of public transportation system, ITS, vehicule to vehicule communication, v2v security.
Master 2 in Telecommunication System, with a major in Design and Management of Information System.
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Python
extensive use of Python and mostly numpy, scikitlearn, pandas, pytorch, matplotlib libraries ...Advanced
-
Machine Learning - IA
Clustering, Classifiers, Regressors, neural networks, deep learning, empower learning,Advanced
-
Web Crawling
Good
-
Statistics
Advanced
-
SQL / No SQL
mongoDB, Cassandra, neo4j, postgresqlAdvanced
-
General Data Protection Regulation
Good
-
Supervised algorithms
Advanced
-
Logistic Regression
Advanced
-
Support Vector Machine
Advanced
-
Empowered learning
Advanced
-
Neural networks
Advanced
-
Graph structured analysis
Good
-
Markov chains
Advanced
-
Route optimisation
Good
-
Natural Language Processing
Advanced
-
Anomalies detection
Advanced
-
D3JS
Expert
-
Ergonomic and design of graphics
Expert
-
QlikView
Advanced
-
Intelligent Transport System
Good
-
e-ticketing/e-payment
Good
-
multimodal transport system
Good
-
ISO 27001
Good
-
Risk Analysis
Advanced
-
Desaster Recovery Plan
Advanced
-
Hadoop
Good
-
Spark
Good
-
Scala
Good
-
Splunk
Good
-
Distributed Computing
Intermediate
-
RoadMap
Good
-
Urbanisation and Design
Advanced
-
Change Management
Advanced
-
Business Plan and Budget
Advanced
-
Open Minded
Expert
-
Pragmatic
Expert
-
Customer Oriented
Expert
-
no-problem-only-solution attitude
Expert
-
Fluent in english
Advanced
-
German, Dutch, Spanish
Intermediate
-
Interaction with foreign business partners
Expert
- Aikido
- Squash
- Running - Swimming
- South America - 6 months - leiseure
- South Africa, Western Cape - 5 months - business
- The Netherlands, The Haag - 1 year - business
- USA, MA. Boston area - 1 year - high school
