Basil (M.sc.) Sattler-Senior Developer / Data Engineer
Check rate
Experience
Senior Developer / Data Engineer
Large energy-sector company
- Co-founded the Real-Time Data team, which grew to 10 members over time.
- Developed and delivered core data products.
- Optimized real-time application performance and implemented monitoring, alerting and logging solutions to ensure system stability.
- Created and maintained deployment pipelines.
- Collaborated with teammates, architects and experts in an agile Scrum environment.
- Operated applications, analyzed, tested and troubleshot software solutions.
Senior Developer / Data Engineer
IT service provider for a public institution
- Revamped and modernized a legacy Java project to improve the application's security and maintainability.
- Migrated existing Java processes to Python.
- Designed and implemented robust ETL pipelines in Python with MongoDB as the target system.
- Containerized the applications and migrated the runtime environment from virtual machines to OpenShift (Kubernetes).
- Advised and supported the introduction of agile methods and CI/CD.
- Supported the operation and data ingestion for a RapidMiner and Knime project to introduce and develop AI applications.
Senior Developer / Data Engineer
Medium-sized online retailer
- Introduced a Kafka monitoring solution in Splunk for proactive error detection and reduced downtime.
- Optimized Kafka setup and configuration in Kubernetes as well as application architecture to ensure optimal performance, scalability and reliability.
- Provided professional operational support to optimize costs and maximize the overall performance of the data infrastructure.
Senior Developer / Data Engineer
Large logistics corporation
- Expertly led multiple Kafka projects from design through development to successful production deployment.
- Trained project colleagues to ensure knowledge transfer and project success.
- Developed a Java backend for a monitoring application that allows dispatchers to track production processes precisely to minimize disruptions and prevent complaints.
- Built and operated the ELK stack (Elasticsearch, Logstash, Kibana) for log aggregation, analysis and visualization.
- Delivered real-time data for route planning to enable last-minute changes.
- Designed and implemented microservices based on Java and Kafka Streams for real-time processing of machine data.
- Maximized operational performance by detecting machine failures immediately and optimizing costs.
- Integrated external databases (PostgreSQL, Oracle) with Apache Kafka, reliably delivering real-time data to consumers.
Developer / Data Engineer
Large industrial conglomerate
- Successfully migrated reporting and ETL processes from Sagent to Pitney Bowes' Spectrum Technology Platform.
- Conducted tests and created business and technical documentation to ensure quality and adoption.
- Collaborated with offshore developers to meet requirements on time and maintain quality.
Senior Developer / Data Engineer
Financial Services, Auto Bank
- Actively worked as a developer in an agile Scrum team.
- Implemented efficient streaming ETL pipelines to integrate SAP systems with Hadoop and Kafka according to requirements.
- Performed comprehensive testing, software development, and created documentation.
Data Analyst
Financial Services, Consulting
- Conducted global market research to analyze HR trends, gain insights, and support strategic decisions.
- Conducted quantitative and qualitative data analysis to identify relevant patterns and relationships.
- Validated and visualized data to ensure data quality and make complex information easy to understand.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Transportation, Banking and Finance, Energy, Information Technology, Manufacturing, and Professional Services.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Business Intelligence, Information Technology, Product Development, Operations, and Human Resources.
Summary
Highly skilled software developer focusing on data engineering. Has 8 years of professional experience. Works on the architecture, development and operation of complex applications.
A special focus is on real-time data processing with Apache Kafka technology.
Proficient in Java and Python programming languages, as well as working with databases like Postgres, Oracle and MongoDB. Meets business requirements through precise and reliable implementation.
Skills
- Programming Languages: Java, Python, Sql, Bash, R
- Databases: Postgres, Oracle, Mongodb, Mysql, Db2
- Software: Apache Kafka, Elasticsearch, Metabase, Microsoft Excel, Rapidminer, Knime, Tableau, Ibm Spss
- Infrastructure, Cloud & Monitoring: Kubernetes, Docker, Aws, Azure, Grafana, Prometheus
- Operating Systems: Linux (Ubuntu, Redhat), Windows, Macos
- Ci/Cd And Version Control: Git, Argo Cd, Jenkins, Azure Devops, Gitlab, Subversion
- Data Formats: Avro, Json, Csv, Protobuf, Xml, Parquet
Languages
Education
University of Mannheim
M. Sc. in Data Science · Data Science · Mannheim, Germany · 2.2
Autonomous University of Barcelona
Barcelona, Spain
Justus Liebig University Giessen
B. Sc. in Psychology · Psychology · Giessen, Germany · 1.2
Certifications & licenses
Certified Data Engineer
AWS
Linux Foundation
Certified Administrator for Apache Kafka (CCAAK)
Confluent
Certified Developer for Apache Kafka (CCDAK)
Confluent
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Basil is based in Frankfurt am Main, Germany.
Basil speaks the following languages: German (Native), English (Advanced).
Basil has at least 9 years of experience. During this time, Basil has worked in at least 3 different roles and for 7 different companies. The average length of individual experience is 1 year and 3 months. Note that Basil may not have shared all experience and actually has more experience.
Based on recent experience, Basil would be well-suited for roles such as: Senior Developer / Data Engineer, Developer / Data Engineer, Data Analyst.
Basil's most recent position is Senior Developer / Data Engineer at Large energy-sector company.
In recent years, Basil has worked for Large energy-sector company, IT service provider for a public institution, Medium-sized online retailer, and Large logistics corporation.
Basil is most experienced in industries like Transportation, Banking and Finance, and Energy. Basil also has some experience in Information Technology, Professional Services, and Manufacturing.
Basil is most experienced in business areas like Business Intelligence, Information Technology, and Product Development. Basil also has some experience in Operations and Human Resources.
Basil has recently worked in industries like Transportation, Energy, and Information Technology.
Basil has recently worked in business areas like Business Intelligence, Information Technology, and Product Development.
Basil holds a Master in Data Science from University of Mannheim and a Bachelor in Psychology from Justus Liebig University Giessen.
Basil has 4 certificates. Among them, these include: Certified Data Engineer, Certified Kubernetes Application Developer (CKAD), and Certified Administrator for Apache Kafka (CCAAK).
The availability of Basil needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 26 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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