Stefan (Stephan) W.
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Stefan (Stephan) W. Email & Phone Number

Data Engineer (Mostly Scala, Spark, Streaming), ETL, Integrations, Customer Technical Relationships, Pacific Time Zone at Stellantis
Location: Santa Barbara, California, United States 20 work roles 4 schools
1 work email found @twitter.com 3 phones found area 415 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 3 phones

Work email s****@twitter.com
Direct phone (415) ***-****
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Current company
Role
Data Engineer (Mostly Scala, Spark, Streaming), ETL, Integrations, Customer Technical Relationships, Pacific Time Zone
Location
Santa Barbara, California, United States

Who is Stefan (Stephan) W.? Overview

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Quick answer

Stefan (Stephan) W. is listed as Data Engineer (Mostly Scala, Spark, Streaming), ETL, Integrations, Customer Technical Relationships, Pacific Time Zone at Stellantis, based in Santa Barbara, California, United States. AeroLeads shows a work email signal at twitter.com, phone signal with area code 415, and a matched LinkedIn profile for Stefan (Stephan) W..

Stefan (Stephan) W. previously worked as Staff Data Engineer at Stellantis and Project (Lead) Data Engineer at Stellantis. Stefan (Stephan) W. holds B.S.E.E., Computer Systems Engineering from Rensselaer Polytechnic Institute.

Company email context

Email format at Stellantis

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*@twitter.com
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Profile bio

About Stefan (Stephan) W.

My career goal is to continue grow and learn within data and software engineering (primary), distributed systems & software development. The long term goal is to be involved with systems architecture. Software engineering background (distributed computing, server systems, embedded systems, data systems, applications and tools) and abilities in customer-facing professional services, marketing & engineering integrations / support, I am able to engage engineering and external entities at a very technical level. Employers find me to be a knowledgeable, team-oriented & conscientious person with integrity, drive & initiative. This blend allows great flexibility in working with a variety of customers in environments tied to software or systems engineering.Skills / Specialties: System / Computer Engineering,Customer Relationships,Comprehensive understanding of business systems/processesAttained lifetime rank of top 20 out of over 27,600 competitors on www.codeeval.com's coding challenge site. Technical: Spark, C/C++, Golang, Scala, Python, Perl, Javascript, PHP, Java, BASIC, IDEs / Debuggers, OSX, Windows, Linux, system design, communications protocols (including SSO, SOAP, HTTP, REST ...)Contributed with written works including Solutions, SOWs, CRs FAQs, white papers, support case notes, bug reports, business / product plans, specifications, product requirements, UML diagrams ...

Listed skills include Software Development, Integration, Product Management, Mobile Devices, and 42 others.

Current workplace

Stefan (Stephan) W.'s current company

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Stellantis
Stellantis
Data Engineer (Mostly Scala, Spark, Streaming), ETL, Integrations, Customer Technical Relationships, Pacific Time Zone
AeroLeads page
20 roles · 39 years

Stefan (Stephan) W. work experience

A career timeline built from the work history available for this profile.

Staff Data Engineer

Current

Amsterdam, NL

As part of the Data Solutions team, primary work covers B2B projects but also worked on projects with other teams. Generally, projects are Spark Scala and are 3 weeks to 2 months. Independently hash out vague customer desires into project requirements. Typical requirements end up with a Scala Spark ETL, SQL query or... The Stellantis mission is to.

Oct 2024 - Present

Project (Lead) Data Engineer

Amsterdam, NL

As part of the Data Solutions team, worked on projects with several other teams. Generally, the projects are Spark Scala and are 3 weeks to 2 months. Independently hash out vague customer desires into project requirements. Typical requirements end up with a Scala Spark ETL, SQL query or... Acquired and transformed data from SFTP, S3, Databricks tables.

Jul 2023 - Oct 2024

Data Software Engineer / De-Facto Team Lead

San Francisco, CA, US

Within the Engineering Effectiveness organization, the Migration Acceleration Team, works with partner engineering teams at Twitter to help speed up technology migrations via a variety of practices including automation, planning, training, measurement, and outsourcing. The team is a cross-functional team in which my current primary role is to be a.

Mar 2022 - Jan 2023

Data Access Layer Engineer / Consultant

Kirkland, Washington, US

Working with the Analytics Data Platform / DAL team at Twitter. DAL is using Scalding / Scala to access the Data Access Layer for data discovery, auditing, abstraction and consumption in conjunction with migrations to GCS. The DAL system allows for personal data identification, retention duration, schemas, identifying up- and down-stream jobs and tracking.

Jan 2021 - Mar 2022

Data Engineer

San Francisco, CA, US

Bidding Optimization Pipeline -- Coding & optimizing the bidding data pipeline. On a Cloudera cluster, I use tools & technologies such as Scala, Spark, Java, HDFS, HBase, Phoenix, Oozie, Jupyter Notebook with Toree, IntelliJ, Git, Jenkins, PySpark / Python, Greasemonkey / Tampermonkey (with HTML and Javascript to improve web visualizations & leverage.

Sep 2018 - Jul 2020

Data Engineer

San Francisco, CA, US

ETL Pipeline -- Coding & optimizing a data pipeline that processes the online advertising dimensions on a Cloudera cluster. I use tools & technologies such as Scala, Spark, Java, HDFS, HBase, JDBC, Phoenix, Presto, Oozie, Jupyter Notebook with Toree (which I built for Cloudera), IntelliJ, Greasemonkey / Tampermonkey (with HTML / Javascript to improve data.

Apr 2018 - Aug 2018

Data Pipeline Software Engineering Lead

San Francisco, CA, US

Lead for Tracker Pipeline -- Same as before with lead accountability... Coding & optimizing a data pipeline that matches 15 TB of session data to 100-200 million Flume-produced events (daily). To understand and process the online advertising events on this Cloudera cluster, I use tools & technologies such as Scala, Spark, Java, HDFS, HBase, JDBC, Phoenix.

Nov 2017 - Apr 2018

Data Pipeline Software Engineer

San Francisco, CA, US

Coding & optimizing a data pipeline that matches 15 TB of session data to 100-200 million Flume-produced events (daily). To understand and process the online advertising events on this Cloudera cluster, I use tools & technologies such as Scala, Spark, Java, HDFS, HBase, JDBC, Phoenix, Oozie, Jupyter Notebook with Toree, IntelliJ, Scalatra, Greasemonkey /.

Sep 2016 - Oct 2017

Data Engineer Contractor / Other

Consulting & Exploration

Consulting Work: May / June - CyberCoders / Butler Shine Stern and Partners: Python REST/JSON ETL pipeline for acquiring Google Analytics and storing in MySQL / MariaDBApril / May - TekPerfect / Hapara: Scala pipeline consuming from Kafka with Spark Streaming and producing enriched data back to Kafka. Technological Exploration: Apache Spark.

Feb 2016 - Jun 2016

Big Data Engineering Immersive Program

Boulder, Colorado, US

A four month mission to add big data engineering / distributed systems skills to my repertoire.Coded Java & Scala to develop comprehensive understanding of Big Data technologies such as Hadoop / HDFS, Spark (with Streaming, Machine Learning & SQL), Storm, HBase, Pig, Hive, Flume, Kafka and complementary technologies that included Docker / Vagrant, Solr and.

Oct 2015 - Jan 2016

Senior Software Support Engineer

San Francisco, California, US

Debugged other software engineers' application security code and build issues which involved runtime & build logs, traces, dumps, binaries, virtual machines, IDA Pro, ADB, Xcode IDE, various build chain analysis tools, and so forth. Wrote & examined C\C++ and Java code as coding examples and for debugging customer-initiated issues. Wrote scripts & web.

Dec 2013 - Oct 2015

Technical Services Program Manager (Etl)

San Francisco, California, US

Managed Technical Services as two offshore teams (India and Mexico). Scheduled / implemented / planned projects, set team priorities, identified risks, documented solutions / SOWs / CRs, troubleshot and implemented web service (SOAP / B-o-o-m-i PaaS) integrations, Jasper Reports and Single Sign-On (SSO). Developed B-o-o-m-i integration code and.

Mar 2012 - Jul 2013

Software Engineer - Integration Engineering Program

Sunnyvale, CA, US

Led the Sprint OEM-facing Integration Engineering Services program for managing integration support to embed C/C++ diagnostics libraries in variety of Android and other mobile devices.OEM project-centric, routine activities included C++ code-level triaging (ADB, Qualcomm debuggers, TCP/IP traces and other tools), producing technical documents, creating OEM.

Dec 2010 - Mar 2012

Program Manager

Reston, Virginia (VA), US

Developed & delivered projects (such as CAPTCHA, Single Sign-On (SSO) & security / user experience features) to enhance Verizon Wireless’s Pix Place online photo album and mobile phone wallpapers sites. Produced clear project scope requirements for new features and enhancements. Documented analytics & system overviews. Reported status and communicated /.

May 2007 - Sep 2008

Software Engineer - Partner Integrations Program

Reston, Virginia (VA), US

Managed key OEM partner relationships with Samsung, Nokia, Motorola, LGE, Hitachi, Toshiba, SK Teletech, Sanyo and others to support the integration process of a proprietary C/C++ library (used for Sprint’s picture mail communications) into a variety of handset platforms that included Brew, Windows, Palm and other systems. Maintained low headcount.

Apr 2004 - May 2007

Software Test Engineer

US

Created C / C++ white & black box tests. Wrote server software tests in C/C++, Java or with other tools to determine image format quality & properties for a wide variety of devices’ server-delivered image formats generated by an in-house media transformer. Created device C++ white-box test software for a mobile phone clip-on camera. Enhanced product.

Apr 2000 - Mar 2004

Product Manager + Software Engineer + Other Roles

Everett, WA, US

Worked in various positions that included software engineer, project manager, engineering liaison, product engineer & product manager. As Product Manager, managed world-wide product marketing for several of Raytek’s product lines. Collaborated with Manufacturing and Engineering to guide development of hardware and software product enhancements, accessories.

Dec 1988 - Apr 2000

Software Engineer - Test Engineer

Santa Cruz, CA, US

Wrote C and Pascal Z80-based software for headset testing machines.

1987 - 1988 ~1 yr

Manufacturing Engineering

US

Wrote C-based test software for digital keyboards and drums

Jun 1986 - Dec 1986

Programmer & Other Odd Jobs

Wilsonville, OR, US

Part-time: Wrote BASIC software (pre-dating spreadsheets) that would display bar & pie charts for use in quarterly meetings. Wrote programs to calculate optics & report sales. I started in a role sorting & delivering mail, sorting scrap, cycle-counting inventory, soldering components and working on a variety of other tasks.

Jun 1977 - Jan 1984
4 education records

Stefan (Stephan) W. education

B.S.E.E., Computer Systems Engineering

Rensselaer Polytechnic Institute

Certificate, Data Engineering

Galvanize Inc

High School, General Education

Blair Academy

Education record

International School Of Stockholm
FAQ

Frequently asked questions about Stefan (Stephan) W.

Quick answers generated from the profile data available on this page.

What company does Stefan (Stephan) W. work for?

Stefan (Stephan) W. works for Stellantis.

What is Stefan (Stephan) W.'s role at Stellantis?

Stefan (Stephan) W. is listed as Data Engineer (Mostly Scala, Spark, Streaming), ETL, Integrations, Customer Technical Relationships, Pacific Time Zone at Stellantis.

What is Stefan (Stephan) W.'s email address?

AeroLeads has found 1 work email signal at @twitter.com for Stefan (Stephan) W. at Stellantis.

What is Stefan (Stephan) W.'s phone number?

AeroLeads has found 3 phone signal(s) with area code 415 for Stefan (Stephan) W. at Stellantis.

Where is Stefan (Stephan) W. based?

Stefan (Stephan) W. is based in Santa Barbara, California, United States while working with Stellantis.

What companies has Stefan (Stephan) W. worked for?

Stefan (Stephan) W. has worked for Stellantis, Twitter, Unify Consulting, Marin Software, and Consulting & Exploration.

How can I contact Stefan (Stephan) W.?

You can use AeroLeads to view verified contact signals for Stefan (Stephan) W. at Stellantis, including work email, phone, and LinkedIn data when available.

What schools did Stefan (Stephan) W. attend?

Stefan (Stephan) W. holds B.S.E.E., Computer Systems Engineering from Rensselaer Polytechnic Institute.

What skills is Stefan (Stephan) W. known for?

Stefan (Stephan) W. is listed with skills including Software Development, Integration, Product Management, Mobile Devices, Software Engineering, Linux, Testing, and Program Management.

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