Skip to main content
Jan Ehrhardt

Jan Ehrhardt

(he/him)

Principal Engineer | Technical Leadership + Hands-On Coding | Lean Mindset | Distributed Systems Expert

Principal Engineer at HelloFresh

Berlin, State of Berlin, Germany🇩🇪
Report

Principal Engineer with 19+ years of software development experience and 10+ years in technical leadership roles. Currently leading technical strategy across 5 engineering teams, building distributed systems at scale. I truly believe that technical leadership requires hands-on coding. My leadership approach is deeply rooted in lean principles - eliminating waste, reducing inconsistency, and preventing overburden across both technical systems and team processes. I focus on fostering continuous improvement through kaizen, helping teams identify bottlenecks and streamline their development workflows. This philosophy extends to how I mentor engineers, always seeking to remove obstacles that prevent them from doing their best work while building systems that scale efficiently without unnecessary complexity.I specialize in designing microservices architectures and event-driven systems that handle failure gracefully while maintaining high throughput. My experience spans building resilient distributed systems using Kotlin, Spring Boot, or Go, all running on AWS infrastructure managed through Terraform. Beyond my professional work, I'm passionate about emerging paradigms like local-first software and specification-driven development with coding agents, exploring how these approaches can revolutionize how we build applications.

Activity

Active on:Bluesky networkTangledStandard

Loading activity...

View full activity

Career: 9

Principal Engineer

HelloFresh

Full-time · Hybrid

Jul 2026 - Present

Principal Engineer

Solaris SE

Full-time · Hybrid

Jan 2024 - Jun 2026

Staff Engineer

Solaris SE

Full-time · Remote

Jul 2022 - Dec 2023

Software Architect

Solarisbank AG

Full-time · Remote

Mar 2020 - Jun 2022

Software Architect

mobile.de GmbH

Full-time · Hybrid

Dec 2015 - Feb 2020

Lead Developer

MOTOR-TALK

On-site

Sep 2014 - Nov 2015

Senior Software Engineer

Deutsche Post

Full-time · On-site

Aug 2012 - Aug 2014

Software Developer

tarent solutions GmbH

Full-time · On-site

Oct 2010 - Jul 2012

Software Engineer

TIMETOACT GROUP

Full-time · On-site

Mar 2007 - Sep 2010

Skills: 18

Technical

Amazon Web Services (AWS)Apache KafkaArchitectureGo (Programming Language)JavaKotlinLinuxMicroservices
MongoDBMySQLPostgreSQLScala

Interpersonal

Technical Leadership

Other

Amazon Simple Notification Service (SNS)Amazon SQSCassandraLean Software DevelopmentOracle Database

Publications: 1

Jan's Leaflets1 article

Hello World

leaflets.jehrhardt.dev

Jun 2025

Credentials: 1

Jun 2020

Languages: 2

German(Native or bilingual)
English(Full professional)