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Lieven Sauerwald

Open for Opportunities

Software Engineer & Consultant

Building scalable backend systems, full-stack web applications, and optimizing production processes with 12+ years of experience.

Core Services

code

Backend Development

Java, Kotlin, Spring Boot, JPA with PostgreSQL, MySQL. Microservices architecture with Docker & Kubernetes.

cloud

DevOps & Cloud

CI/CD pipelines with Jenkins, GitHub Actions. Cloud deployments on Azure, Google Cloud, and AWS.

analytics

Process Consulting

Lean Six Sigma Black Belt. Production optimization, Shopfloor Management, and quality systems.

About Me

I'm a freelance Software Engineer and Consultant based in Germany, combining deep technical expertise with business process knowledge. With a Master's in Business Information Systems and a Lean Six Sigma Black Belt certification, I bridge the gap between technology and operational excellence.

school

Education

Master of Business Information Systems, B.Sc. Wirtschaftsinformatik

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Certification

Lean Six Sigma Black Belt for process optimization

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International

Projects across Europe, USA, and Mexico

Technical Skills

data_objectLanguages & Frameworks

JavaKotlinSpring BootJPAVaadinC#RESTSOAP

storageDatabases

PostgreSQLMySQLMS SQLOracle DBSQLite

deployed_codeDevOps & Infrastructure

DockerKubernetesJenkinsMavenGradleGit

cloud_uploadCloud Platforms

AzureGoogle CloudAWS

Professional Experience

rocket_launch

Freelance Software Engineer & Consultant

Since 2022

Backend development for greenfield projects, full-stack architecture for production systems, and business consulting.

business

Expert Consulting - Horváth Engineers GmbH

2017 - 2022

Full-stack development of web-based production systems, production consulting for manufacturing companies across Europe.

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Expert - Horváth & Partners (Automotive)

2015 - 2017

QMS consulting and process optimization in the automotive Competence Center.

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IT Consultant - Accenture

2012 - 2014

Software development projects in banking and public transportation sectors.

Selected Projects

A selection of notable projects across different industries and technologies.

monitoring
4 years

Production Analytics Platform

Full-stack web application for manufacturing companies to capture production metrics via touchscreen interfaces, with automated real-time analytics and shopfloor dashboards for management.

JavaKotlinSpring BootVaadinKubernetes
architecture
Ongoing

Enterprise Backend Architecture

Greenfield project designing and implementing a scalable, modular system architecture. Complex integration of internal and external systems with comprehensive CI/CD pipeline and quality assurance.

KotlinSpring BootAzureDockerCI/CD
chat
6 months

Social Platform Backend

Backend development for a social media platform with microservices architecture. Developed technical concepts for API versioning to ensure backward compatibility with existing mobile apps.

JavaSpring BootRabbitMQPostgreSQLMicroservices
local_shipping
2 years

Logistics Tracking Mobile App

Android application for tracking key events in internal production logistics. Combined with shopfloor management consulting, automated data collection, and management reporting.

AndroidJavaSQLiteLean Six Sigma
account_balance
1.5 years

Banking System Transformation

Large-scale development and transformation project in the banking sector. Technical design and implementation for credit processing, collateral management, and project financing modules.

JavaSpringJPAEnterprise
confirmation_number
1 year

Public Transport eTicketing

Development of technical concepts and implementation for an eTicketing system in public transportation. Led the development of a customer management subcomponent.

Java EESOAPJSFJPA
Open for Future Opportunities

Let's Work Together

Looking for a reliable software engineer or consultant? Send me a message and I'll get back to you soon.

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