Immanuel B. - Senior Full-Stack Developer

Wiesbaden, Germany

Experience

Jan 2024 - Present

2 years

Wiesbaden, Germany

Senior Full-Stack Developer

SCHUFA Holding AG

Further development of features with React
Integration of React applications with GraphQL
Migration of AWS Lambdas based on Kotlin to TypeScript
Advising the team on migration strategy for moving to serverless applications
Preparing for the go-live of various projects (quality assurance, deployment, monitoring)
Deployment of applications with AWS Amplify, AWS Lambda and GitHub Actions
Technologies: AWS (Lambda, DynamoDB, CDK, Amplify, CloudWatch), React, Kotlin, TypeScript, Cypress, Selenium
Methodology: Agile development with Scrum, Kanban

Jun 2023 - Sep 2023

4 months

Cologne, Germany

Senior Full-Stack Developer

AXA Konzern AG

Enhancing frontend components with React and Redux
Migrating insurance calculators from GWT (Google Web Toolkit) to React applications
Implementing Cypress tests
Refactoring code and advising on best practices, clean code and testability
Enhancing interfaces with Spring Boot 2.7 and Java 8 and Java 17
Deploying applications with ArgoCD, RedHat OpenShift and Tekton
Technologies: AWS, RedHat OpenShift, ArgoCD, Tekton, Java 8 and Java 17, React, TypeScript, Spring Boot, Cypress
Methodology: Agile development with Scrum, Kanban

Dec 2022 - May 2023

6 months

Ulm, Germany

Senior Full-Stack Developer

Mercedes-Benz Tech Innovation GmbH

Further development and migration of frontend components from Lit Elements to Vue 3
Creating a test strategy for the frontend
Advising on clean code, testability and architecture
Implementing backend requirements with Kotlin and Spring Boot
Deploying applications with Azure DevOps and Azure Pipelines
Technologies: Microsoft Azure, Kotlin, Vue 3, TypeScript, Web Components, Vitest, Playwright
Methodology: Agile development with Scrum, Kanban, Pair Programming

Feb 2022 - Apr 2022

3 months

Burghausen, Germany

Freelance Trainer

ppedv AG

Teaching the React ecosystem
Introducing basic React concepts
Developing two sample applications to explain concepts
Creating handouts in the form of slide decks and code repositories

Oct 2021 - Sep 2022

1 year

Hamburg, Germany

Full-Stack Developer

OTTO GmbH & Co. KG

Developing and extending AWS Lambda functions in Node.js, TypeScript, Kotlin
Extending AWS ECS services with Spring Boot (Kotlin) that consumed data via SQS/SNS
Testing code (TDD) with Jest, JUnit, Selenium and Kotest
Developing new modules of the frontend component with HTML, TypeScript and SCSS
Maintaining and preparing AWS cloud infrastructure for go-live (Grafana, CloudWatch)
Infrastructure as Code with AWS CDK and Terraform
Persisting data with MongoDB Atlas and AWS DynamoDB
Creating a proof of concept for modern frontend technologies
Monitoring with AWS CloudWatch and Grafana
Ensuring high availability, scalability and security of applications
Technologies: AWS, Kotlin, HTML, CSS, TypeScript, Jest, JUnit, Selenium, MongoDB, GitHub
Methodology: Agile development with Scrum, Kanban, Pair Programming, trunk-based development

Sep 2020 - Oct 2021

1 year 2 months

Leipzig, Germany

Full-Stack Developer

VEDA HR Cloud GmbH

Development of the MVP for nuwork in a greenfield project
Implementation of the OKR framework with a SaaS solution
After MVP release, further development of features, bug fixing, and monitoring
Enhancement of CI/CD pipelines in Bitbucket and GitLab
Setup of frontend architecture with React, TypeScript, Storybook, and TailwindCSS to implement a mobile-first development approach
Testing code with Jest, Testing Library, msw, and Cypress, partly using TDD
Building test infrastructure for E2E tests
Creation of a testing and quality concept for the frontend area
Development of microservices with Java 11, Spring Boot, and Apache Kafka
Technologies: React, TypeScript, TailwindCSS, Styled Components, Jest, Testing Library, Cypress, ESLint, Java 11, Spring Boot, Kafka, Jira, Confluence, Bitbucket, PostgreSQL, MongoDB
Methodology: Agile development in a cross-functional team using Scrum, Kanban, OKR

Apr 2020 - Sep 2020

6 months

Leipzig, Germany

Full-Stack Developer

VEDA GmbH

Further development and maintenance of VEDA Horizon
Development with Java 8, Thymeleaf, jQuery, and LESS
Refactoring of the admin interface due to product realignment
Creation of a concept to modernize the frontend
Migration from jQuery to React
Migration from RequireJS to Webpack
Migration from AMD to ES6
Implementation of the DevOps principle with Jenkins to create custom test environments and release product increments
Technologies: Java 8, Spring, Thymeleaf, jQuery, LESS, Bootstrap, Jenkins, Docker, JRebel, PostgreSQL
Methodology: Scrum and Kanban, Pair Programming, Mob Programming, TDD, BDD

Mar 2019 - Apr 2020

1 year 2 months

Leipzig, Germany

Working Student and Junior Developer

Saxess AG

Creation of a proof of concept for a dashboard for fidas
Bug fixing and maintenance of the overall product
Extension of existing features
Frontend development with Vaadin 10
Backend development with Java 8, Spring 4, and Hibernate
Technologies: Vaadin 10, Java 8, Spring, Hibernate, PostgreSQL, Apache Tomcat
Methodology: Pair Programming and TDD

Skills

Focus Areas: Javascript/frontend Developer With Focus On React, Typescript And Node.js; Good Java/kotlin/jvm Backend Skills And Interest In Architectural Topics; Focus On Developing High-quality Products That Can Withstand Heavy User Load; Solid Devops Skills
Programming Languages: Javascript, Typescript, Kotlin, Java 8-17
Other Languages: Html, Css, Less, Scss
Libraries/frameworks: React, Vue 3, Redux, Jquery, Node.js, Spring Framework, Vaadin, Hibernate, Bootstrap, Tailwindcss
Frontend Methodology: Responsive, Atomic Design, Mobile-first, Server-side Rendering
Databases: Postgresql, Mongodb, Dynamodb
Testing: Jest, Vitest, Cucumber, Junit, Kotest, Selenium, Cypress
Devops: Github Actions, Bitbucket, Aws, Docker, Azure Devops, Azure Pipelines, Redhat Openshift, Argocd, Tekton
Methods: Scrum, Kanban, Pair Programming, Clean Code, Solid, Kiss, Dry/wet, Trunk-based Development