# John Koehn > Late Modernity Viber Location: San Francisco, California, United States Profile: https://flows.cv/johnkoehn Connoisseur of the human spirit Late Modernity Viber ## Work Experience ### Staff Software Engineer @ Fieldguide Jan 2025 – Present ### Senior Software Engineer @ Fieldguide Jan 2023 – Jan 2025 ### Software Engineer @ Fieldguide Jan 2022 – Jan 2023 ### Senior Software Engineer @ Thomson Reuters Jan 2021 – Jan 2022 ### Software Engineer @ Northwestern Mutual Jan 2020 – Jan 2021 - Trained several mobile developers on how to develop REST APIs in NodeJS. This greatly increased our ability to produce and maintain APIs, increasing the overall productivity of the mobile team by 30%. - Coordinated with the mobile team to understand their API requirements as they built several new features for customers. - Ran and monitored the APIs in Kubernetes. - Greatly increased API documentation by using the OpenAPI standard. - Managed over fifteen microservices built in NodeJs. Increased the readability of code by moving from observables to async/await pattern ### Software Engineer @ Thomson Reuters Jan 2019 – Jan 2020 - Dramatically decreased the amount of time it takes for a team to get an API exposed through Apigee by automating proxy creation using the teams OpenAPI document. Accomplished this by building a suite of tools that included an API, CI/CD tool and a UI that takes an OpenAPI document and generates/updates and promotes the proxy into higher environments. - Developed an organization wide dashboard to display information on APIs within Thomson Reuters, including the amount of traffic each API gets, their associated business unit and what API Platform they’re using. Achieved this by continuously gathering logs and metrics from Apigee and AWS API Gateway and computing metrics on the logs by using Kinesis, Kinesis Analytics and lambdas. - Trained colleagues on how to design and build cloud native applications in AWS. - Built and managed several internal APIs using Node.js, AWS Fargate, Code Pipeline and CloudFormation to help enable TR’s API strategy. ### Software Engineer @ Source Allies Inc. Jan 2018 – Jan 2019 - Built a new software solution that enabled targeted marketing campaigns which resulted in connecting 25,000 new devices to the ecosystem - Enhanced reliability of a Sales System by moving functionality to RESTFUL APIs hosted in AWS that are unit tested, have smoke tests and a continuous integration pipeline - Greatly improved the ability for marketing to make quick changes to pricing in various countries by creating micro UIs in React that interfaced with the new APIs - Increased visibility and response time to issues in the Sales System by sending the logs to AWS and creating alerts on critical logs - Coordinated with other development teams to use the APIs as new functionality was built and delivered in the Sales System ### Community Advisor @ Iowa State University Jan 2016 – Jan 2017 - Build a strong, inclusive community of thirty residents - Create an environment that promotes the ability of residents to obtain success in college - Assist residents with personal issues, confront negative behavior, provide support in emergency situations, document policy violations ### Systems Engineer Intern @ Cerner Corporation Jan 2017 – Jan 2017 - Worked with clients to resolve system issues and fulfilled requests - Developed tools to automate processes and server maintenance - Audited systems to gather statistics on unmet requirements and resolved them ### Intern Firmware Engineer @ Entrust Datacard Jan 2016 – Jan 2016 • Developed an automated regression tool in Java to increase workplace productivity and product confidence by more quickly identifying firmware bugs • Coordinated with the firmware engineering team to better understand project requirements and obtain continuous feedback on the project • Established a Jenkins build environment to build and provide daily testing of new firmware ### Teaching Assistant @ Iowa State University Jan 2015 – Jan 2016  Guide and monitor lab exercises  Reinforce programming concepts taught in class  Commended for helping students debug and solve problems ### Systems Integration Engineer @ HGST Jan 2015 – Jan 2015 | Rochester MN  Developed and maintained automation tools written in Python, Java, Perl and C#  Implemented source control procedures to streamline tool maintenance  Analyzed and debugged SSD and HDD failures  Assisted with the implementation of visual monitoring of key metrics  Trained two new employees on testing processes and automation tools  Recreated customer issues in order to replicate and debug problems  Worked closely with product managers and firmware team to improve product performance  Maintained test server environment and resolved multiple and varied issues ### Cook @ Troy Burne Jan 2014 – Jan 2014 | Hudson WI ### Assistant Waiter @ Dock Cafe Jan 2013 – Jan 2013 | Dock Cafe, Stillwater MN ## Education ### Computer Engineering Iowa State University ## Contact & Social - LinkedIn: https://linkedin.com/in/john-koehn-28179041 --- Source: https://flows.cv/johnkoehn JSON Resume: https://flows.cv/johnkoehn/resume.json Last updated: 2026-03-31