01.07.2026 aktualisiert

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Softwareentwickler und -architekt

Wien, Österreich
Nur Remote
M.Sc. Informatik
Wien, Österreich
Nur Remote
M.Sc. Informatik

Profilanlagen

Master-Zeugnis.pdf
CV.pdf
Arbeitszeugnis_Sebastian-Krebs.pdf

Über mich

Für Empathie in der Softwareentwicklung

Skills

C (Programmiersprache)HTMLJavaAgile MethodologieAmazon Web ServicesApache TomcatAutomatisierungTest AutomationC++CSSCmakeContinuous IntegrationDevOpsEcmascriptJ2EEGitHubGradleGroovySpring FrameworkJSONJUnitApache MavenOpenShiftSoftware ArchitectureMockitoRequirements EngineeringSeleniumSOAPSoftwareentwicklungSubversionTypeScriptExtensible Markup LanguageJettyPulumiReact.jsSpring BootGatlingSpockGitLabGitWebpackAngularJSAtlassian BitbucketReact NativeApi DesignTerraformCucumber (Software)Docker
Java, Java 8, Java 11, TypeScript, ECMAScript, ES6, C, C++, Groovy, Maven, Gradle, Make, CMake, webpack, vite, JEE, Spring, Spring Boot, Payara, Tomcat, Jetty, Docker, Docker Compose, OpenShift, CI/CD, DevOps, ArgoCD, Tekton, Test Automation, Automatisierung, JUnit, Mockito, Cucumber, Selenium, Spock, Gatling, Jest, React, React Native, Angular, TailwindCSS, JSX, HTML, CSS, Software Design, Requirements Engineering, Software Architecture, Infrastructure as Code, Terraform, Pulumi, OpenShift, AWS, Git, SVN, GitLab, BitBucket, GitHub, Bitrise, Vercel, API Design, REST, SOAP, JSON, XML, Agile Methods

Sprachen

DeutschMutterspracheEnglischverhandlungssicher

Projekthistorie

Software Freelancer - Health Service Interfaces on OpenShift @ Public Service

tbd

Öffentlicher Dienst

1000-5000 Mitarbeiter

Systems: Central data platform for medical applications in health (hospitals, doctors, laboratories)

Responsibilities: Software consulting at the interface between project leads and other subcontractors. Migration of a VM hosted service bus for health related services to a containerized solution (OpenShift/Kubernetes), conception and implementation of automation tasks and deployment pipelines and integration of those into existing software landscape, prototyping and exploration of technologies and technical feasability to mitigate risk

Technologies: OpenShift, Kubernetes, ArgoCD, Git (Bitbucket), Docker, Typescript, React, Postgres, Prisma, OAuth, Nexus, Tekton, Jenkins, Confluence, MS Teams

Software Freelancer - CO2 Tracking @ novid20 (TWOxTEN)

Novid20 GmbH (now TWOxTEN)

Sonstiges

10-50 Mitarbeiter

Systems: Web Dashboard for a CO2 tracking app
Responsibilities: technical design and implementation of the solution in close coordination with the cusotmer
Technologies: NextJS, React, Typescript, TailwindCSS, OpenID Connect (Ory), Docker, GitLab CI, Vercel

Die Zusammenarbeit mit Sebastian war ausgesprochen angenehm.
Mit seiner offenen Art zu kommunizieren und seiner technischen Expertise war er in der Lage innerhalb kürzester Zeit einen Mehrwert für unser Projekt zu generieren. 
- Christoph Tockner, CEO Novid20 GmbH

Founder - Location Based Mobile App @ bitconfetti

bitconfetti GmbH

Sonstiges

< 10 Mitarbeiter

Systems:
  • iOS/Android gaming app for location based puzzles that can be played in groups of up to six people
  • people buy a ticket for the group and can play once which takes 2h approximately
  • AWS backend systems that allow persistence and real-time cross device synchronization of game state
  • no release yet
Responsibilities: everything from design to implementation

Technologies: React Native, TypeScript, AWS (Lambda, DynamoDB, S3, Cognito, SQS, SNS, API Gateway, RDS), Websockets, Postgres, Sentry, Prisma (ORM), Docker, Docker Compose, Serverless Framework, Jest

Software Architect - Automotive Systems @ QAware GmbH

QAware GmbH

Sonstiges

50-250 Mitarbeiter

Systems:
  • international web portal and backend APIs for automotive third parties e.g. independent operators and ambulance
  • software system landscape consisting of >100 server instances
Responsibilities:
  • subproject and interim management of a team of up to eight people
  • technical responsibility for a project with a budget > 1.5 milion €
  • API and system design, architecture of the software landscape
  • estimation, planning and delegation of tasks to the team
  • integration and development of a billing and payment solution based on SaferPay
  • bugfixing and troubleshooting of distributed systems
  • integration and development of software systems in an environment with multiple stakeholders and parties with different interests
  • technical team building
  • design of a development flow based on Git that takes into account the particular characteristics of the project e.g. external i18n flows 
  • migration of a landscape of 100 server instances into OpenShift and AWS
  • increase observability of the services using tools like Grafana, Kibana etc.
  • establishment of infrastructure as code (e.g. Terraform) to enhance reproducibility and tracability of infrastructure changes
  • conception and development of a CI/CD solution to match organizational and technical requirements
  • migration plan from a legacy authorization system to a state of the art solution based on OpenID Connect
  • design and development of automated test suites for unit, e2e and browser based tests
Technologies: Java, TypeScript, Groovy, JEE, Spring, Spring Boot, Quarkus, JSF, JPA, OracleDB, Postgres, Angular, LifeRay, Jenkins, Git, Gradle, Maven, Gatling, Docker, Docker Compose, OpenShift, AWS, IBM MQ, AWS, REST, SOAP, JSON, OpenID Connect, Cucumber, Selenium, webpack, Terraform
Other tools: JIRA, Confluence, Bitbucket, Apigee, Mule ESB, SoapUI, SaferPay

Senior Software Engineer - Automotive Systems @ QAware GmbH

QAware GmbH

Sonstiges

50-250 Mitarbeiter

Systems:
  • Java based client application for supporting verious business processes in vehicle outlets
  • web portal for automotive third parties such as independent workshops or ambulance
  • automotive backend APIs and middleware
Responsibilities:
  • bugfixing and troubleshooting of legacy systems including performance analysis and load testing
  • discussion and design of new features with the customer
  • estimation of tasks
  • API and system design
  • integrating new features into existing systems while maintaining system stability and non functional requirements
  • building a new backend middleware for connecting various automotive backends
  • design and implementation of automated tests
Technologies: Java, JEE, Spring Boot, Angular, TypeScript, JUnit, Mockito, JSF, Mule ESB, OracleDB, Jetty, Websockets, Payara
Other tools: JIRA, Confluence, Bitbucket, SonarQube, Mule ESB

Software Engineer - Charging Infrastructure Solution @ QAware GmbH

QAware GmbH

Sonstiges

50-250 Mitarbeiter

System: Custom administrative system for managing devices and firmware for charging infrastructure for electric vehicles
Responsibilities:
  • Requirement engineering
  • Design, implementation and test automation of a Java based backend with REST APIs
  • Schema design of the persistence layer and ORM
  • Conception and implementation of a web based user interface based on Angular
Technologies: Java, Maven, Spring, AngularJS, Grunt, MariaDB, JPA, Hibernate Envers, JUnit, Tomcat, Git
Other tools: SonarQube, Jenkins

Staff Researcher - fortiss GmbH

fortiss GmbH

Sonstiges

50-250 Mitarbeiter

System: Vehicle prototype for autonomous driving
Responsibilities:
  • Software development with C++ and Robot Operating System (ROS) for an autonomous vehicle
  • development of a physical simulation to predict vehicle behaviour
  • integration of sensors (lidar, camera, ultrasound) into the vehicle on the driver and application level
  • modularization of the software for running it on the embedded systems on the vehicle
  • integration of the software into a new real-time operating system
Technologies: C, C++, CMake, Python, SVN, Robot Operating System (ROS)

Software Trainee - DeltaGen @ 3DS

3DS (RTT)

Sonstiges

250-500 Mitarbeiter

System: DeltaGen, a physical based renderer for creating photorealistic visualizations
Responsibilities: Design and implementation of automated tests for existing and new features
Technologies: Qt, Squid, Python

Software Trainee - SecDocs @ Futjisu Technology Solutions

Fujitsu Technology Solutions

Sonstiges

>10.000 Mitarbeiter

System: SecDocs, an evidence-preserving long-term archiving system of digital documents
Responsibilities: design, test and implementation of a an administration client for SecDocs
Technologies used: Java, JSF, SOAP, XML

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