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Julius Deichert-HetzelJD

Julius Deichert-Hetzel

Senior Platform Engineer — Cloud & Data Platforms

€750/day
Bremen, DE
8-15 years

Average response time: 1 hour

About Julius

Freelance Senior Platform Engineer focused on building scalable cloud and data platforms that streamline development and reduce operational overhead. I help teams design and operate production-grade systems with clear ownership, clean architecture, and efficient developer workflows.

My work centers on AWS-based platforms, platform and infrastructure design, and making complex systems easier to build, deploy, and maintain.
Currently open to new freelance projects and long-term collaborations.

**Full Portfolio on:

Cloud, DevOps & Infrastructure:
AWS, Terraform, Terraform Cloud, Docker, CI/CD, GitHub Actions, Bitbucket, Infrastructure as Code (IaC), Cloud Automation, Ansible

Programming languages:
Python, Kotlin, Java, TypeScript, JavaScript

Software Engineering & Architecture:
Clean Code, Clean Architecture, API Design, Microservices, Scalable & Distributed Systems, Platform Engineering, Developer Tooling, Technical Mentoring

Frameworks & Technologies:
FastAPI, Flask, NestJS, Spring, Ktor, Typer, Kedro, Android

Databases:
MongoDB, MySQL, Redis, PostgreSQL

Workflows:
Airflow, Data Pipelines

  • German

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • PlanBlue
    Senior Platform Engineer & Architect
    SOFTWARE PUBLISHING
    November 2022 - Today (3 years and 7 months)
    Bremen, Germany
    • Lead architecting a multi-environment data pipeline platform across cloud, edge and on‑premise, enabling scalable processing of complex hyperspectral datasets.
    • Owned the design and implementation of abstraction layers for orchestration, data processing and data access, improving consistency and reducing duplication.
    • Developed internal tooling, infrastructure automation and CI/CD workflows to streamline engineering processes and significantly shorten deployment times.
    • Mentored cross‑functional teams on software architecture, clean code and engineering best practices, raising overall delivery quality and team autonomy.
    Data Platform AWS Airflow IaC CI/CD Management
  • Open Reply
    Senior Backend Engineer & DevOps
    SOFTWARE PUBLISHING
    June 2020 - November 2022 (2 years and 5 months)
    28 Bremen, Germany
    • Delivered features and enhancements across multi-environment microservices for HeyOBI app (5M+ downloads), improving overall service functionality and reliability.
    • Extended policy engine for advanced authorization and access-control logic, strengthening consistency and security in production systems.
    • Provisioned scalable cloud infrastructure components, enabling consistent and reliable environments for high-traffic services.
    AWS Terraform Typescript REST Microservices Architecture
  • Open Reply
    Senior Android Engineer
    SOFTWARE PUBLISHING
    February 2019 - April 2021 (2 years and 2 months)
    Bremen, Germany
    • Designed and implemented high-level abstractions and foundational code layers, enabling scalable architecture and reusable components across the app.
    • Developed key features end-to-end, delivering smooth user experiences and optimal app performance under high-load conditions.
    • Optimized core systems for reliability and speed, ensuring seamless interactions and efficient resource usage for millions of users.
    Kotlin Android Clean Architecture Functional Reactive Programming Jetpack Compose

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Education

  • Master of Science - MS
    Hochschule Bremen
    2019
    Master of Science - MS
  • Bachelor of Science - BS
    Hochschule Bremen
    2017
    Bachelor of Science - BS

Certifications

Skill set

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