Senior Software Engineer - Interim Tech Leader

8/2021 – 12/2021

In the role of EM, I was leading two cross functional software delivery teams working on internal systems - a customer satisfaction aggregation tool as well as a global system for coupon / voucher management that replaced an open-source library.

* Introduced Scrum in two cross functional software delivery teams
* Staffed teams to meet future capacity requirements
* Introduced and successfully established Elixir to replace Ruby in parts of the system
* Supported transition from monolithic Rails apps to a message driven micro service architecture
* Successfully drove a build / buy decision for a global coupon system
* Introduced React Context API, refactor and Dark Mode as an Individual Contributor

Confluence, Projektleitung / Teamleitung (IT), Scrum, Jira, Ruby, Typescript, Amazon Web Services (AWS), JavaScript, Kubernetes, React (JavaScript library), Ruby on Rails

1/2020 – 7/2021

I started out as Lead Engineer - being the first permanent engineering hire - mostly focusing on writing code, delivering features and maintain RoR applications and Vue.js frontends. Secondly - together with the CTO - I was responsible to structure and plan out the product engineering organization to be fit for a hyper growth phase post an A Series funding

* Structured and built up the product engineering organization Achievements - Staffed engineering teams from 1 to 16 engineers
* Transitioned mobile applications from app-shell web apps to React Native
* Drove initiative to migrate backends from bare metal to a multi public cloud setup leveraging Kubernetes
* Drove initiative to migrate from monolithic RoR apps to a service oriented architecture using Ruby and introducing NestJS as a complimentary backend technology
* Established constant improvement in Scrum teams - enabling them to own their individual processes and be high performing
* Established strong engineering culture, engineering excellency and high performance environment
* Supported the introduction of a ISO 13485 certified QMS and owning relevant processes
* Co-created and established a methodology to release medical device grade applications within weeks instead of months

Agile Methodologie, Amazon Web Services (AWS), Cloud Computing, DIN EN ISO 13485, JavaScript, Kubernetes, Postgresql, Projektleitung / Teamleitung (IT), React Native, Ruby, Ruby on Rails, Scrum, Typescript, Vue.Js

10/2015 – 12/2019

Together with a US based engineering team, I was responsible for a SaaS solution providing clinical trial data capturing functionality to orthopedic surgeons to collect patient reported outcomes. I accompanied the team and product over several years and through many technical iterations - most importantly moving towards cloud native and a service-oriented architecture following an iterative approach - servicing parts out while keeping the monolith.

* Remotely leading a Software Engineering Team based in the US and enabled them to deliver on time and get high performing
* Enabled the team to adopt a DevOps culture environment and a youbuild-it, you-run-it mindset
* Built an internal iPad OS prototype providing AR for products in showrooms using Tensorflow mobile and consuming several REST interfaces
* Built a service to anonymize clinical trial data in Golang
* Built a charting service using express and D3
* Migrated applications from EC2 into Kubernetes

Amazon Web Services (AWS), Confluence, Golang, JavaScript, Jira, Kubernetes, Postgresql, Projektleitung / Teamleitung (IT), Ruby, Ruby on Rails, Typescript