Laurens Bosscher

Software Engineer

Experience

Now2020

SIX Swiss Exchange Zürich, Switzerland

Part of the core team (4 engineers) responsible for running the 2000+ SIX indices including the SMI
Initiated and led the initiative to move to Ansible and GitOps to ensure that test and production environments are aligned so that release risk was greatly reduced
Responsible for development of the SIX Crypto indices calculator engine (Scala using Akka) including introducing new calculation methods and a major rewrite of the calculation and reporting engine. 100% uptime during market hours
Prevented several serious incidents by debugging and fixing (legacy) business critical applications under pressure
Improved documentation, developed several smaller Python/Scala monitoring and automation applications to further reduce risks

20202018

Simplicate Software Groningen, The Netherlands

Most senior engineer in the team (5 developers) responsible for all Typescript and Javascript projects
Increased release cadence archived by the team to 1 release a week (down from once every 6 months)
Increased developer productivity utilizing modern continuous delivery practices such as a loosly coupled architecture, continuous integrations and automated testing
Decreased time spent on bugs by the team from ~20% to ~10% by increasing test quantity and quality
Optimized and scaled a (near) realtime GraphQL Django application, to meet the demands of our biggest customers
Fast paced, high pressure environment with a large amount of technical debt
Simplicate was part of the 50 fastest growing tech companies in the Netherlands for the past three years (2019 - 2021), having a growth of 3018% in 2019

20182015

Slimmere AI (formerly Target Holding) Groningen, The Netherlands

Developed and scaled the second largest student performance tracking system in the Netherlands (used by 1.1 million students)
Started as junior/medior developer, grew to team lead (team size of 3 developers)

20152014

Getlogic Groningen, The Netherlands

Developed an extensive testing framework for Django to rapidly increase test coverage for common scenarios
Increased webshop performance by 200% by implementing Spdy/Http 2.0 and optimizing caching strategy
Created an new Linux hosting environment utilizing RabbitMQ/Salt/PostgreSQL/Solr for a large webshop

20142013

DiagnOptics Groningen, The Netherlands

Developed a companion application for their main product so that research results can easily be shared, logged and archived.

20182020

Simplicate

Utilized React and Typescript to build a modern codebase where we could share business logic between the browser, two mobile apps (iOS and Android), NodeJS (for PDF rendering) and a browser extension
Worked with Typescript, React, Redux, Mobx StateTree, Python, NodeJS, Docker, Django, GraphQL as well as with legacy technology such as Yii and PHP

20182015

Slimmere AI (formerly Target Holding)

Utilized a combination of Galera (triple master MariaDB setup) and Cassandra to guarantee high performance and scalability for peak workloads
Worked with Python, Typescript, MySQL, Cassandra, Elastic Search, Redis and Salt

20132009

Hanzehogeschool Groningen, The Netherlands

Completed an Honours minor and an Honours project.