09/03/2026 updated
60 % partially available
Senior Backend Developer with DevOps expertise
Luleå, Sweden
Only remote
Diplom-InformatikerAbout me
I focus on an API-first approach with extensive knowledge in building REST APis based on OpenAPI, OAuth2 and IAM. I write human readable code in a testdrivven developement fashion to ensure a high quality and maintainable code base.
Java (Programming Language)PHPApplication Programming Interfaces (APIs)Agile MethodologyAmazon Web ServicesAmazon Elastic Compute CloudBusiness ProcessesCode ReviewContinuous IntegrationData StructuresDevOpsElasticsearchGitHubUser Interface DesignIdentity Management
PHP Backend Development
Extensive experience developing PHP-based backend APIs using Symfony framework, creating RESTful services, and implementing microservices architecture.
DevOps Engineering
Strong expertise in CI/CD pipelines, Docker containerization, AWS cloud services (EB, ECS, EC2, ElastiCache, Elasticsearch, RDS, Lambda), and self-hosted GitLab instances.
Frontend Development
Development of web frontends using Angular and TypeScript, with experience in managing frontend developers and implementing complex UI/UX features.
Symfony Framework
Deep knowledge of Symfony 1, 2, 3 and 5/6 frameworks for building robust PHP applications, APIs, and administration systems.
Database Management
Experience with Oracle DB and MySQL database systems, designing and implementing data structures for various applications.
TYPO3 CMS
Certified TYPO3 CMS Integrator with extensive experience developing websites, custom extensions, and business process implementations.
Agile Development
Implementation of SCRUM methodologies, GitHub code reviews, and agile project management practices.
Experience
Professional experience10+ years
Freelancer since2004
Languages
GermanNative speakerEnglishFluentSwedishFluent
Project history
Working as Senior Developer, DevOps engineer and Project Manager with focus on planning the development and deployment stack based on Oracle DB, docker containers, self hosted gitlab instance with CI/CD features. Development of multiple PHP based backend APIs based on the Symfony framework. Initial development of multiple web frontends based on Angular and Capacitor.
Working as Senior Backend Developer with main focus on maintaining and extending a heterogen application landscape with a Symfony1 legacy application and a Symfony 2 based API and administration application. Development of an OAuth2 Identity Server supporting OpenID Connect based on the Slim Framework. Implementation of an Angular2 based ePoster Tool including the Symfony2 backend API.
Dockerized the development environment and setup of the CI/CD integration based on an own Gitlab instance and capistrano deployment.
Started own business in Sweden offering web development services based on Symfony, TYPO3 CMS and GravCMS for own clients and as freelancer for other companies. Projects included fullstack development of ePoster tools, session planner tools, and business process applications using Symfony and Angular.