Sebastián K.
Further development of "ROAD-Kit"
Experience
Apr 2022 - Sep 2023
1 year 6 monthsGermany
Further development of "ROAD-Kit"
Mercedes-Benz, MBTI
- ROAD-Kit is a tool to improve the developer journey for in-car app developers. It offers a CLI, a graphical IDE, ADKs and simulators, plus a cloud environment tailored to the Mercedes-Benz OS, similar to ADB and Android Studio for Android.
- In my role as a software developer, I shaped and refined the tooling from the alpha version into a mature standard tool.
- Tasks:
- Agile software development in an interdisciplinary environment, working closely with several teams and supporting each other.
- Independently designing and developing new and existing features.
- Coming up with solution ideas, presenting them to the team, piloting, and implementing them.
- Analyzing bugs; writing automated E2E and UI tests; manual testing.
- Attending workshops, handling tickets, analyzing bug reports.
- Community support: helping in-car app developers with advice and guidance, explaining new features, and addressing their needs and requests.
- Redesigning the CLI architecture; porting all functions to the new vehicle generation; optimizing existing features.
- Primarily responsible for developing the IDE based on VSCode, taking full ownership of its design.
- Evolving the ADKs based on Yocto and QEMU.
- Building new releases.
- Pair programming.
- Languages & technologies used:
- Go, TypeScript, QML/C++, Shell
- GitHub, GitLab, Azure DevOps, Azure Cloud
- Miro, Teams, Rocket.Chat, Figma, MS Office
- IntelliJ, VSCode Extension API, Podman, QEMU, Yocto, Packer, VNC, Qt
Mar 2021 - Mar 2022
1 year 1 monthGermany
Further development of "Saveris Restaurant"
Testo
- Successfully delivered strategically important features under time pressure and staff shortages. Testo SE offers a cloud-based software solution for modeling and quality assurance of quick service restaurants (fast food chains). The core application, a monolithic legacy system, needed to be extended with new use cases that were not originally planned.
- Tasks:
- Finding solution approaches and implementing them in the legacy system while it was running worldwide. Extending the data model and migrating existing data.
- Extracting parts of the legacy system into independent services in parallel and bringing them into production. Redeveloping using modern technologies and domain-driven design approaches.
- 3rd-level support, fixing (and finding) bugs and incidents.
- Technical and functional onboarding of new team members.
- Supporting manual testing. Writing automated software tests, participating in SCRUM meetings, etc.
- Languages & technologies used:
- Java 8/11/17, Java EE stack, Spring Boot stack, Axon, Apache Camel, Hibernate, DeltaSpike, Tomcat, Weld CDI, JUnit Jupiter, Spock, …
- Amazon AWS stack (Beanstalk, CloudWatch, Container Registry, EC2, SNS/SQS, LaunchDarkly, Lambda, saml2aws, etc.), CloudFormation, Terraform
- Docker, Gradle, IntelliJ, MySQL
- Jenkins, SonarQube, GitLab, GitLab CI
- Jira, Confluence, Miro, Slack, Teams, Whiteboard
Sep 2019 - Feb 2021
1 year 6 monthsGermany
Further development of "Job-related German language training"
BAMF
- Managing, coordinating, and billing job-related German language training through a central digital platform with broad usage options for a variety of stakeholders.
- Tasks:
- Extending the on-site control for planning and creating checklists, rule-based data evaluation (e.g., to suggest sanctions), complex reporting, and interactive data and key figure visualization.
- Redeveloping course management both for course providers to record and manage courses and for internal case workers to process data. Implementing complex validations.
- Writing automated tests, data migration, providing API and client.
- Languages & technologies used:
- Java, Spring Boot, TypeScript, Angular
- Oracle, PL/SQL, Swagger, Jenkins, Maven, Git, Rancher, Kubernetes
- Scrum, Jira, Confluence
Mar 2019 - Jul 2019
5 monthsGermany
Further development of the "infinitec SaaS platform"
intinitec GmbH
- Developing microservices in a Netflix style for exchanging and aggregating financial data between customers, partners, and banks.
- Tasks:
- Developing an engine for transaction classification.
- Setting up bidirectional connections with external partners (e.g., banks) to import and manage customer data.
- Languages & technologies used:
- Java, Groovy, PostgreSQL, Vavr
- Spring, Docker, Grafana, Spock, TestRail, Git, Gradle
- Scrum, Jira, Confluence
Jan 2019 - Apr 2019
4 monthsGermany
Further development of the "blugento datahub"
St. Benno Mediengroup
- eCommerce platform for connecting customers' PIM and shop systems in the media industry.
- Tasks:
- Developing integration components and data pipelines to/ between Akeneo and Magento.
- Languages & technologies used:
- Java, Groovy, HSQLDB
- Spring, Camel, Akeneo, Magento, Spock, Git, Gradle
Nov 2016 - Mar 2019
2 years 5 monthsGermany
Development of ORBIT - monitoring of production processes
BMW AG
- ORBIT has been gradually deployed as a monitoring system in the process control operations at BMW and some service providers since May 2017.
- It consists of a web frontend and a range of backend tools that communicate with each other as native binaries for Windows, MacOS, and Linux.
- Tasks:
- Communication with the client
- Responsible for architecture and implementation
- Integration into the existing IT landscape
- Languages & technologies used:
- C, Go, mruby, Ruby, JS, Sencha
- Git, Scrum, Jira, Docker, SSH, SSL, HTTP, Sockets
Sep 2016 - Mar 2017
7 monthsGermany
Development of CFK+ for real-time production visualization
BMW AG
- CFK+ is a JavaFx application for use on large screens to visualize stoppages, key metrics, and alerts in real time.
- Tasks:
- Communication with the client, business units, and IT
- Responsible for architecture and implementation
- Integration into the existing IT landscape
- Languages & technologies used:
- Java, JavaFx, Hibernate, PL/SQL
- Git, Gradle, Oracle, LDAP, Jira
Aug 2015 - Dec 2015
5 monthsGermany
Further development of the Wimdu online portal
Wimdu GmbH
- Wimdu is an online platform that connects travelers with private owners of apartments and rooms. It is the largest "marketplace" in Europe for private accommodation in over 120 countries.
- Tasks:
- Designing and developing private APIs for mobile clients
- Designing and developing public APIs for the affiliate program
- API development to integrate external data sources
- Languages & technologies used:
- Ruby, JavaScript, OAuth 2, MySQL
- Rails, Elasticsearch, Jira, Git, Scrum
Mar 2015 - Dec 2018
3 years 10 monthsGermany
Development of production and management reports
BMW AG
- The reports, up to 100 pages long, provide an overview of production and downtime, as well as related OEE and production metrics on a daily, weekly, monthly, and yearly basis.
- Tasks:
- Communication with the client and business units
- Design and development of reports
- Development of a KPI engine for real-time calculation
- Integration into the existing IT landscape
- Languages & technologies used:
- Java, JavaScript, Oracle, PL/SQL
- Eclipse BIRT
May 2014 - Feb 2015
10 monthsGermany
Development of the fleetboard.app for truck drivers
Daimler Fleetboard
- With the fleetboard.app, truck drivers can check their location, get route information, record remaining driving times, plan rest breaks, view vehicle data, and compare it with the fleet.
- Tasks:
- Design and implementation of various core components, including dashboard, time management, messenger, calendar, and profile
- Integration of local and push notifications
- Languages & technologies used:
- Java, Android
- Git, Maven, protobuf, Robolectric
- Jira, Confluence, Scrum
Mar 2014 - Aug 2014
6 monthsGermany
Further development of an online platform for office supplies
papersmart GmbH
- As part of expanding the platform into the private customer segment, existing business processes were adapted and new workflows introduced.
- Tasks:
- Designing and implementing new payment processes
- Integrating new payment systems
- Database and infrastructure migration
- Conducting load and performance tests
- Languages & technologies used:
- Ruby, JavaScript, HTML, CSS, PostgreSQL
- Rails, PayOne, ActiveMerchant
- Git, Scrum
Jan 2012 - Dec 2014
3 yearsGermany
Development of the mobile alerting solution maintcall
BMW AG
- As part of a system overhaul, an alerting solution was developed for modeling escalation processes and transmitting production disruptions to maintenance.
- Tasks:
- Responsible for architecture, implementation, and deployment
- Coordinating the interface specification
- Implementing the backend and the push service
- Implementing the mobile clients for Android, iOS, and Windows Phone
- Implementing the admin interface as a web application
- Developing the Visio plug-in for modeling escalation flows
- Languages and technologies used:
- Java, Ruby, JavaScript, Obj C, C#, Visual Basic, Oracle
- Rails, ExtJs, Android, iOS, .NET, Visio, BEA, Git
- Scrum, Jira
Jan 2008 - Dec 2011
4 yearsLeipzig, Germany
Tool for collaborative development of software models
University of Leipzig
- As part of a research project, a generic web tool was developed for collaborative modeling and development of software product lines with strong support for real-time collaboration.
- Tasks:
- Designing the system architecture
- Implementing the backend and the push services
- Implementing the web application and the modeling editor
- Conceptual analysis, development, and implementation of algorithms for conflict resolution strategies
- Languages and technologies used:
- Ruby, JavaScript, MySQL
- Rails, ExtJS, InfoViz
- SVN, Redmine
Summary
I have a strong background in developing robust software solutions across various industries such as automotive, finance, public services, and eCommerce. I have built and evolved complex systems with modern technologies and agile practices by designing intuitive user tools, APIs, and integrations, while continually improving performance and usability.
I excel in working collaboratively within interdisciplinary teams, taking full ownership of features and architectural decisions. My hands-on experience with cloud environments, micro-services, and testing frameworks has allowed me to deliver reliable products that meet diverse user needs and drive continuous innovation.
Languages
German
NativeEnglish
AdvancedEducation
University of Leipzig
Master of Science · Computer Science · Leipzig, Germany
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