Jan Lüders
Senior Developer
Experience
Oct 2024 - Present
10 monthsRemote
Senior Software Developer
#Die.Digitalfabrik GmbH
- Languages: PHP7/8 (Shopware 6), Vue.js, Docker, Apache
- Infrastructure: ScaleCommerce (E-Commerce cluster, container based)
- Team size: 3
- Development methodology: Kanban (Jira/Confluence)
- Planning and development of various client projects in an agency environment
Apr 2024 - Nov 2024
8 monthsRemote
Senior PHP Developer
Denkwerk GmbH
- Languages: PHP7 (Magento 1.9 & Shopware 5 & 6), Vue.js, Docker, Oracle, Apache, MongoDB (NoSQL)
- Infrastructure: MaxCluster (E-Commerce cluster, container based)
- Team size: 5
- Development methodology: Kanban (Jira/Confluence)
- Technological and architectural planning, development, and maintenance of the shop bp-online.com
Mar 2023 - Mar 2024
1 year 1 monthProject Manager Cloud & Infrastructure
FFW Hamburg
Infrastructure: Google Cloud Services (Kubernetes, Artifact Registry, Cloud SQL, VPC, IAM, IAP, Storage, PSC, CDN, Interconnect); IaC with Terraform/Terragrunt; migration from AWS S3 & AWS Lambda to GCP Buckets & Cloud Functions; AWS IAM
Team size: 5
Development methodology: Kanban
Coordination, structuring, process control, and oversight of the operations team for ZDF on behalf of FFW Hamburg
Apr 2022 - Present
3 years 4 monthsChief Technical Officer
NIU Nature GmbH
- Languages: PHP8, Symfony, Shopware 6, MySQL, Postgres, Flutter mobile, .Net 8.0, ProtoBuf, Python
- Infrastructure: Google Cloud Services (Cloud Run, Artifact Registry, Cloud Functions, Cloud SQL, Cloud VPC, IAM, IAP, Storage); IaC with Terraform/Terragrunt
- Team size: 3
- Development methodology: Kanban (Jira/Confluence)
- Development of a mobile application in Flutter with .Net microservices backend
Mar 2022 - Feb 2023
1 yearWeb 3 Developer & Product Owner
MetaCards.gg
- Languages: Solidity, TypeScript, Node.js, Python, ReactJS/React Native
- Infrastructure: AWS (EC2, RDS, EKS, S3, Route 53, VPC, IAM)
- Team size: 5
- Development methodology: Scrum
- Steering and development of a blockchain game (gaming, NFT, wallet hosting)
Jul 2019 - Mar 2022
2 years 9 monthsHead of Development, UIT ONE
UIT Services GmbH
- Languages: PHP7 (Magento 1.9 & Shopware 5 & 6), Vue.js, React Native, C#, TypeScript, ReactJS/React Native, Docker, Oracle, Apache, MongoDB (NoSQL)
- Infrastructure: Google Cloud Services (Artifact Registry, Cloud Functions, Cloud SQL, Cloud VPC, IAM, IAP, Storage, Compute Engine)
- Team size: 5
- Development methodology: GitLab tickets, Kanban
- Staff leadership and training
- Project acquisition
- Shopware 5 & 6 development
- React Native contract development to extend in-house product range
- Development of a white-label backend for mobile applications
- IT project planning and budgeting
May 2019 - Nov 2020
1 year 7 monthsTechnical Project Lead
sallys-shop.de & sallys-world.net
- Languages: PHP7 (Magento 1.9 & Shopware 5/6)
- Infrastructure: on premise
- Team size: 3
- Development methodology: Scrum (Jira/Confluence)
- Opening of additional sales portals (Amazon, eBay) to expand customer base
- Migration of existing shop to Shopware including infrastructure and integration of WAWI
- Integration of the blog into Shopware and provision of data for IoT application
Apr 2019 - Oct 2019
7 monthsBackend Developer
Cosinex GmbH & Public Plan GmbH
- Languages: PHP7 (CakePHP 2), React JS, Java 8 & Spring Boot, MySQL
- Infrastructure: private cloud service
- Penetration tests on infrastructure and software
- Team size: 3
- Development methodology: Kanban (Jira/Confluence)
- Ensured usability of the OSIP software by migrating an Oracle database
- Consulting and support in the development of the client for aviation and nuclear safety
Mar 2019 - Jul 2021
2 years 5 monthsLead – Backend Developer
Personalwerk GmbH / ThyssenKrupp
- Languages: PHP7 (Symfony 4 Flex), Vue.js, Vuex, Java Spring Boot, MySQL, Redis, WSDL/SOAP
- Team size: 3
- Development methodology: Git Issues, Milestones
- Reduced importer run times by 75% through development of a data miner to fetch and cache multiple REST/SOAP APIs
Mar 2019 - Jun 2019
4 monthsFull Stack Developer
Trans Service Team GmbH
- Languages: PHP7 (Slim), React JS, Java 8 & Spring Boot, MySQL
- Penetration tests on infrastructure and software
- Team size: 3
- Development methodology: Kanban
- Development of various REST APIs with accompanying frontends for internal use to simplify business processes
- Management of driving orders and reduction of idle times in the high-bay warehouse fleet
Feb 2019 - Mar 2019
2 monthsSoftware Developer
feder-software GmbH
- Languages: Java 8 & Spring Boot, MySQL, Icinga2, Bash, Docker
- Team size: 2
- No formal development methodology
- Set up a monitoring system to identify bottlenecks in various hardware and network areas
Feb 2018 - Jun 2019
1 year 5 monthsHead of Development
Wircon GmbH
- Project planning and conception, project budgeting, leadership of an 8-member development team, reporting to management
- Infrastructure: Google Cloud Services (Cloud Functions, Cloud SQL, Cloud VPC, IAM, IAP, Storage, Compute Engine), GitLab CI/CD, GitLab Docker Registry
- Penetration tests on infrastructure and software
- Languages: PHP7 (Symfony 3.4, ZF3), Node.js, NoSQL/SQL, HTML, CSS, React Native
- Development methodology: Kanban (Jira/Confluence)
- Development and deployment of various web applications (CRM, marketing tool, administration interface) including infrastructure planning
Apr 2017 - Jun 2018
1 year 3 monthsSenior System Engineer
Ministry Group GmbH
- Languages: PHP7 (Symfony 3.4, native), HTML5, JavaScript, CSS3, Bash, Shell script, SQL, React Native
- Infrastructure: Linux, GitLab CI/CD + Jenkins, AWS Lambda testing
- Team size: 4
- Development methodology: Scrum
- Development of various WordPress projects (ambassador.xing.com, pc-spende.de) and other web applications
- Corporate network administration and support of on-site admin, reporting to management
- Penetration tests on web applications
Feb 2017 - Mar 2018
1 year 2 monthsAndroid Developer
Deutsche Post AG
- Languages: Java, SQL, SQLite, NoSQL, PHP7 (Symfony 3.4)
- Infrastructure: Linux, Android 6, SQLite
- Team size: 1
- Development methodology: Git Issues
- Development of an Android application with voice control
Jan 2016 - Mar 2017
3 monthsFull Stack PHP Lead Developer
KB&B
- Languages: HTML5, JavaScript, SQL, PHP7 (native)
- Infrastructure: Linux, Apache, MySQL
- Team size: 1
- Development methodology: Scrum
- Development of an in-house framework
Jul 2016 - Dec 2016
6 monthsPHP Backend Developer
BAKS GmbH
- Languages: PHP, XML, JSON, HTML5, CSS
- Team size: 2
- Developed and deployed a backend solution for invoice generation to replace manual processes
- Optimized customer management by developing a CRM
Apr 2016 - Mar 2017
1 yearFull Stack PHP Lead Developer
Effektor GmbH
- Languages: HTML5, CSS, PHP7 (native, WordPress), SQL
- Infrastructure: Linux, Apache, MySQL
- Team size: 5
- Development methodology: Git Issues
- Development and deployment of multiple WordPress sites for clients
- CSS and JavaScript optimizations
May 2014 - Jun 2016
2 years 2 monthsHead of Development & Administration
Perennial AG (Aeroflot)
- Consulting and conceptualization for setting up data centers in Moscow and St. Petersburg
- Administration, monitoring, and support of OpenStack cloud (14 nodes) in both locations
- Administration, monitoring, and 3rd level support of corporate servers and e-commerce system developed for Aeroflot
- Development of interfaces for data processing
- Development of an e-commerce front and backend for cross-selling insurance, car rental, and hotels
- Development and hosting of multiple WordPress landing pages with security measures
- Languages: PHP (Symfony, ZF1), XML, JSON, HTML5, CSS3, Bash, SQL, Java (Selenium tests)
- Infrastructure: Linux, OpenStack, MySQL, Oracle
- Development methodology: Scrum
Oct 2010 - Present
14 years 10 monthsSenior System Engineer
Freelance
- Own products:
- CleanCode Studio CRM (Java 6), currently refactoring to Java 11 and Spring Boot
- iOS and Android development with React Native
- Python and machine learning (self-instructed & Udemy)
Summary
I am a seasoned senior developer with extensive experience in Flutter, C#, PHP, JavaScript, and cloud infrastructure. I have led teams on projects ranging from e-commerce platforms to mobile applications and blockchain games. I focus on developing robust solutions through hands-on coding, architectural planning, and process coordination in agile environments. My work spans industries including e-commerce, cloud computing, and web3. I take pride in optimizing performance and streamlining operations with modern technologies like Symfony, Vue.js, Docker, and Google Cloud. I continually embrace new challenges while delivering reliable and innovative results.
Languages
German
Native
English
Advanced
Education
Jan 2009 - Jun 2011
Xplosion Interactive
IT Specialist for Application Development · Hamburg, Germany
Sep 2001 - Jul 2004
Karstadt Warenhaus AG
Retail Sales Merchant · Hamburg, Germany
Certifications & licenses
CCNA
Cisco
Oracle SCJA
Oracle
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