Simon Wirtz

Leveraging strong technical expertise and communication skills, I built a successful career at Karat as an Interview Engineer, Mentor and Content Creator. This experience allowed me to design and evaluate challenging coding problems, assess candidate performance effectively, and provide valuable feedback. By onboarding and coaching new interviewers, I fostered a collaborative and knowledge-sharing environment. Additionally, I designed and tested new interview questions, staying at the forefront of industry trends and ensuring assessments reflect real-world requirements. Eager to leverage my problem-solving skills, technical knowledge, and collaborative spirit in a hands-on engineering role.

With Matilda Explorations, I worked as a technical advisor evaluating take-home coding challenge submissions from candidates applying to US based technology companies. I worked closely with the founding members to help them evaluate candidates' code submissions in various programming languages.

At BRYTER, I designed and implemented an integrations platform for the main product, a SaaS no-code platform. The integrations platform was based on a Serverless approach where we used tools like Kubernetes, Docker, OpenFaaS, Prometheus, DataDog, Kotlin, Node.js, Vue.js and a few more. We maintained hundreds of different integrations, an SDK for developers to use and the API to talk to integrations from within the main product. I was on this team since the beginning and hired and onboarded multiple new team members. I actively contributed to creating and shaping OKRs for the team and helped create our product metrics that helped with tracking our objectives. At BRYTER, I contributed to company-wide technical alignment and improvement efforts from the start and saw the company grow from 30 to around 230 people.

We developed a big data visualization tool for a multi-tenancy SaaS product. I built a generic SQL query framework with Kotlin, jOOQ and Spring that enabled sophisticated data fetching capabilities through a REST API. We consumed this API from multiple UIs written in React. One of the main challenges involved finding a good abstraction level and making the SQL querying as dynamic as possible. Part of my work was also mentoring the team on Kotlin. I worked in a distributed engineering group of 5 people.

Full stack development with Java, Kotlin, Spring, OSGi, AngularJS, REST, SOAP and more. I held the temporary role of a technical team lead. The product played an important role in a domestic e-health infrastructure rollout for which we provided the device that acted as an entry point to this secure private infrastructure. My work involved security topics, card reader communication, service orchestration and more. I was, among other things, also responsible for onboarding new team members, participating in software architecture discussions and improving our release management.

Full stack development with Java, OSGi, Spring, Hibernate, MySQL, MongoDB, JavaScript and other web technologies. We built a monitoring application that provided an overview of multiple internal systems of the company that served the operations team with an overview of the overall system’s health. The work to enable these monitoring capabilities involved integrating with a couple of other systems in the infrastructure, extracting data from it to transform it into reasonable metrics we could display in the application.