Freelancer profile translated to English.

Description

I support companies – especially in the areas of environment, sustainability, sports, and travel – in making their IT structures future-proof and efficient.

As an experienced software developer and cloud consultant with a focus on Java (Spring Boot), DevOps, CI/CD, and sustainable system architecture, I guide teams in optimizing infrastructure and software landscapes.

I offer:

- Part-time freelance support (10-15 hrs./week)

- Consulting & implementation in ongoing projects

- Expertise in Green IT, maintainable APIs, Terraform, AWS, PostgreSQL

- Clearly structured communication and reliability through professional experience

Typical projects:

– Setup/optimization of CI/CD pipelines

– Further development of Java backends

– Cloud migrations & infrastructure review

– Sustainable software architecture with a focus on efficiency

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Bosch
Software Engineer
July 2022 - July 2023 (1 year)
Test automation for an internal iOS and Android app. Spring Boot JUnit and integration tests.
Telekommunikation
IT Consultant
January 2024 - Today (2 years and 5 months)
Development and support of scalable backend services with a focus on Java Spring Boot and Golang

Implementation of API designs, database connection (PostgreSQL), and infrastructure automation

Setup and maintenance of cloud infrastructures in AWS and Microsoft Azure using Terraform

Participation in digitalization projects for telecommunications customers

Integration of external AI models and development of an AI-based retrieval system as part of the Live ReplAI project

Responsibility for individual sub-components, including configuration, deployment, and maintenance

Active member of the internal Community of Practice on Green AI and sustainability in software projects
Terraform Java Spring boot Back-End Development GO

Be the first to recommend Lennart

Help this freelancer shine by sharing your experience working together.

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

Baptiste Duhen

Fullstack developer

4.6

(4)

Amed Hamou

Senior Lead Developer

(2)

Audrey Champion

Web developer

4.3

(3)

Signup to reveal

Lennart Zinn

Software Developer

About Lennart

Experience

Recommendations

These freelancer profiles also match your criteria

Skill set

Categories