Lars Butzmann
Verified Expert in Engineering
Software Developer
Berlin, Germany
Toptal member since June 18, 2020
After starting a PhD in enterprise systems, Lars joined a startup in San Francisco to develop their analytics product. He has experience working remotely in the past with clients in NYC and in London. He enjoys working with everything related to data so much so that he considers himself a SQL hero. Lars also has used Python and begun using JavaScript/CoffeeScript since it allows for fast prototyping and still creates production-ready solutions.
Portfolio
Experience
- Python - 8 years
- MySQL - 7 years
- Git - 7 years
- SQL - 7 years
- PostgreSQL - 5 years
- SAP HANA - 5 years
Availability
Preferred Environment
PyCharm, Git, ITerm, Sublime Text, OS X
The most amazing...
...project I've worked on allowed a brand to analyze their sales in a way they haven't even dreamed about before.
Work Experience
PhD Student
Hasso Plattner Institute
- Conducted research that was focused on an enterprise system and their databases.
- Worked with a multibillion-dollar CPG brand to understand and improve their reporting capabilities.
- Created a prototype to simulate the companies business (profit/loss analysis) which allowed them to connect it to their actual data.
- Published four papers about in-memory databases and the software using it.
Director of Analytics
42 Technologies
- Created a platform which helps retailers analyze hundreds of million of records.
- Made weekly customer calls to discuss and plan features.
- Added more than ten integrations to the platform, from Google Analytics to different POS systems to inventory.
- Improved the query performance by rewriting the SQL and tuning the database.
Software Engineer
SAP SE
- Analyzed customer data regarding patterns, distribution and data types, and created a summary.
- Worked on a database for proteomics data.
Software Engineer
SAP SE
- Created an available-to-promise prototype on SAPs new HANA database using JavaScript, Python, and SQL.
- Built a data generator to create large data sets and realistic workloads for testing.
- Set up a continuous integrations using Jenkins.
- Presented results to internal SAP teams.
Education
Master of Science Degree in IT Systems Engineering
Hasso Plattner Institute - Potsdam, Germany
Bachelor of Science Degree in IT Systems Engineering
Hasso Plattner Institute - Potsdam, Germany
Skills
Libraries/APIs
Node.js
Tools
Git, Sublime Text, ITerm, PyCharm, Grunt, Jenkins
Languages
SQL, Bash, CoffeeScript, JavaScript, Python, R
Platforms
SAP HANA, Linux, OS X
Storage
PostgreSQL, MySQL, MongoDB, SQLite
Frameworks
Apache Spark, Express.js, Django, Spark
Paradigms
Scrum
Other
Data Engineering
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