Sebastian Weggesser
Senior Software Engineer | IT Consultant | Interim Tech Leader
Experience
Senior Software Engineer
AREO GmbH
I have built an AI powered planogram editor to support go live and delivery of a web-based retail stock planning software.
Senior Software Engineer
Archie - Syngularity Inc.
In a team of four engineers, I helped building a pre-launch real-estate contract generator and platform for real estate agents. I was leading the architecture and implementation of a pref-filling rule engine to significantly lower manual effort and support the product's USP.
Software Architect
ENGIE Energy Access
Review and audit of 9 software and the systems architecture. The mission was to develop a target architecture and organizational recommendations to support a 10x growth of customer base and needed systems scale.
Engineering Manager
DataGuard
In the role of EM I was leading two cross functional software delivery teams working on the core public facing products of DataGuard. I was responsible for delivery on time, staffing, improving agile processes, technology improvements like transitioning to TypeScript as well as keeping the quality high. Along leadership responsibilities like personal development of individual engineers, I conducted code reviews and drove architectural improvements as well as contributed code.
Key Achievements:
- Transitioned two Software Engineering Teams from virtually not delivering to high performing
- Successfully introduced Scrum in two Software Engineering Teams - enabling management to reliably predict deliveries
- Introduced DORA metrics to measure key data points, established these as part of the teams' culture
- Wrote a service in Ruby to pull and process DORA metrics from GitLab and to be delivered to corporate reporting
- Introduced low code and integrations tooling like AppSmith and n8n
- Contributed to transition from bare metal to Kubernetes
Stack: Ruby on Rails, Vue.js, PostgreSQL, Redis, Kubernetes, AppSmith, n8n, GitLab, Keycloak
Head of Technology
Florio
As Head of Technology I was responsible for the entire engineering organization - encompassing ownership of relevant processes within the ISO 13485 QMS, managing change from native to cross platform, leading multiple external teams and internal engineers as well as a cloud stack transition from ECS to Kubernetes.
Key Achievements:
- Re-staffed software engineering team to meet capacity requirements
- Successfully oversaw external near shore development of two mobile products from initial concept to running in production
- Successfully simplified Software Development Process within the ISO 13485 QMS
- Initiated infrastructure transition from ECS to Kubernetes
- Initiated and successfully accomplished transition from native iOS and Android setup to React Native
Stack: Ruby on Rails, iOS UIKit, React Native, PostgreSQL, Redis, Terraform AWS ECS, RDS, EC2, S3, Lambda, ECR, Cognito, Phrase, Circle CI
Engineering Manager
Marley Spoon
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.
Key Achievements:
- 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
- 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
Stack: Ruby on Rails, Elixir, Phoenix, Sinatra, Kafka, React, PostgreSQL, Redis, Sidekiq, Kubernetes, GitHub Actions
Lead Engineer / Engineering Manager
Temedica
I started out with Temedica 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.
Key Achievements:
- Structured and built up the product engineering organization
- Staffed engineering teams from 1 to 16 engineers
- Transitioned mobile applications from app-shell web apps to React Native
- Drove intitiative 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 but also introducing NestJS
- 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.
Stack: Ruby on Rails, Vue.js, React, React Native, NestJS, PostgreSQL, Redis, Sidekiq, Terraform, Kubernetes, Phrase, GitHub Actions, Keycloak
Senior Software Engineer / Supervisor Software Development
Arthrex
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.
Key Achievements:
- 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 you-build-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
Stack: Ruby on Rails, Elixir, Golang, React, React, PostgreSQL, Redis, Sidekiq, Kubernetes, AWS EC2, CloudFormation, S3, Lambda, Api Gateway, SNS, SQS, Tensorflow, iOS Cocoa Touch, Circle CI, Okta