Career & Experience · Daniel Böttner

Tech Stack – Proven in Production

Infrastructure

Ubuntu LinuxHetznerTraefikDockerKubernetesAnsibleTerraformBash

CI/CD & Ops

GitLab CI/CDGitHub ActionsGitPlesk

Logging & Monitoring

ELK-StackGrafana

Backend

PHPLaravelPython / DjangoNode.jsREST APIs

Frontend

Vue.jsNuxt

Databases & Data

PostgreSQLMariaDB / MySQLETL / XML / JSON

Career Path

Experience & Milestone Timeline

From application development and early e-commerce systems to interface architectures, modern full-stack development, CI/CD and DevOps workflows.

Earlier Stations (2005–2015)

06/2025 – 05/2026

Permanent

Leipzig

Werbemittel24.com GmbH

Full Stack Developer

Technical modernization of an e-commerce and ERP/merchandise management landscape with focus on data integration and process modeling.

Key Focus Areas:

Detailed analysis and optimization of product, pricing, supplier and ordering workflows.
Designed and implemented ETL import and transformation processes for large XML/JSON supplier feeds.
Normalized variants, tiered prices and complex customization/refinement data.
Built an ETL structure using Django, Django REST Framework and PostgreSQL as the foundation for shop and ERP integration.
Integrated international catalog sources including PF Concept, Giving Europe and MidOcean.
Supported conception and evaluation around Odoo CE 19 as well as technical SEO and content architecture.

Practical Proof & Architecture

Data Architecture

ETL Pipeline & ERP/Shop Integration

Heterogeneous Sources (PF Concept, Giving Europe, MidOcean) → Normalized Models

1Supplier Feeds (XML / JSON / REST)

2Django REST & Celery ETL Pipelines

3PostgreSQL Data Normalization Core

4Nuxt E-Commerce Frontend & Odoo 19 ERP

50+Catalog Sources

-65%Pipeline Runtime

11/2022 – 11/2024

Permanent

Remote

Smart Arbeiten GmbH

Full Stack Developer / DevOps

Full stack development (Laravel, Vue/Nuxt) and DevOps: Headless DMS and CRM for Enersol, evolution of Tauschwohnung.com, cloud migration to Hetzner, centralized logging (ELK), and CI/CD pipelines.

Practical Proof & Architecture

DevOps & Workflows

CI/CD & DevOps Automation (GitHub & GitLab)

Infrastructure migration for Sonnen AG subsidiaries & GitHub Actions for Tauschwohnung.com

1GitHub Actions & GitLab CI/CD Deployment Pipelines

2Ansible & Terraform Enterprise Orchestration

3Docker Compose Containerization & Branch Preview Environments

4Manual Excel workflow → 100% self-service tool

4.2kImage Migration

100%Workflows

04/2022 – 10/2022

Permanent

Remote

Unisigns GmbH

Full Stack Developer

Conception and delivery of booking interfaces and backend APIs for interactive customer workflows.

Practical Proof & Architecture

Realtime APIs

Reactive Booking UI & Interfaces

Vue/Nuxt frontend backed by REST API & WebSockets

1Vue / Nuxt reactive interface

2Socket.io event handling & real-time updates

3PHP REST backend & validation

4MySQL & Interbase persistence

Vue / NuxtFrontend Stack

100% DockerDev Environments

04/2019 – 04/2021

Permanent

Leipzig

CHECK24 Reisevergleich GmbH

Full Stack Developer

Development on business-critical features in high-traffic travel booking pipelines and offer-packaging engines.

Practical Proof & Architecture

High Traffic Architecture

High-Traffic Offer-Packaging Engine

Dynamic bundling of flights, hotels and travel services

1Customer search request on desktop booking funnel

2Packaging engine: Real-time combination of flight & hotel

3High-performance filter & pricing calculations

4Fail-safe booking & checkout transactions

Desktop TeamPlatform

PackagingArchitecture

07/2016 – 03/2019

Permanent

Leipzig

Händlerbund Management AG

Full Stack Developer & Technical Trainer

Established and modernized technical development workflows and architecture in a growing IT organization (seamless team transition from m|o onlineshop under the same lead).

Practical Proof & Architecture

Tech Lead & Mentor

Platform Modernization & Apprenticeship Lead

Monolith transformation to microservices & developer mentoring

1Procedural monolith analyzed & refactored

2Modular Laravel microservices & Docker introduced

3GitLab CI & Redmine synchronized via APIs

4Shopware, Magento & JTL integrations deployed

~6 AzubisMentorship

MicroservicesArchitecture

05/2015 – 06/2016

Permanent

Leipzig

m|o onlineshop Development

Full Stack Developer

Development and maintenance of multifaceted e-commerce platforms alongside modernization of internal workflows (seamless team transition to Händlerbund in July 2016).

09/2014 – 03/2015

Permanent

Leipzig

Telepronto Communication GmbH

PHP Web Developer

Web development and maintenance of internal communication and data systems with PHP and MySQL.

06/2013 – 06/2014

Permanent

Großzöberitz

Industriefabrik Schneider GmbH

IT Administration & IT Services

IT systems administration, maintenance and development of web/CMS solutions (Joomla) and DMS platforms (seamless branch transition and team retention from Alfred Meyer GmbH under director Schneider).

09/2010 – 05/2013

Permanent

Großzöberitz

Alfred Meyer GmbH

Developer & IT Administration

Design and development of intranet and internet platforms (Joomla/PHP), print catalog maintenance, DMS/mail server integration, and cross-site ERP migration (branch Großzöberitz transitioned into Industriefabrik Schneider in 2013).

01/2005 – 09/2008

Apprenticeship / Permanent

Bitterfeld-Wolfen

Prochaska & Schmidt GbR / Prochaska Online Service

Apprentice & Web Developer

Operation of regional portal bitterfeld-online.de. Following partner restructuring, sole in-house developer with direct responsibility for PHP applications and MySQL databases.

2005 – 2008

Dual Vocational Education (2005–2008)

Halle (Saale) / Bitterfeld-Wolfen

BBS II „August von Gutjahr“, Halle (Saale) & Training Enterprise

Dual Vocational Training: Software Development

Completed the full three-year dual training curriculum and vocational school program (formal chamber certification omitted due to employer insolvency and company restructuring during the exam phase). Early transition to autonomous production software development.