# Jake Kalkman > Senior Fullstack Engineer with a passion for solving problems! Location: Denver, Colorado, United States Profile: https://flows.cv/jakekalkman Experienced Senior Back-End developer with a passion surrounding the development community. Always seeking new challenges and the next tool to add to my belt. Strong languages include C#, .NET 6, .NET 8, .NET 10, Python, SQL, Typescript. And experience in databases such as Azure Blob Storage, Cosmos, MSSQL, MySql, MariaDB, Mongo. Eager to continue my growth and contribute to the community as best I can! ## Work Experience ### Senior Software Engineer @ City National Bank Jan 2023 – Present Implemented Infrastructure as Code written and deployed with Terraform, Kubernetes, and ArgosCD Designed application architecture when planning to migrate from .Net 6 to .Net 8 and created documentation to support retention of knowledge. Converted .Net 6 monolithic applications to a .Net 8 applications with distributed services using CQRS. Successfully transitioned applications from a proof of concept to production before stakeholder deadlines within budget. Released code under strict regulatory compliance conditions ensuring we met audit criteria and passed a Change Approval Board. Created mobile application using Vue, Typescript, and React Native with a GraphQL/.Net API backend to replace a vendor provided solution. Embedded various 3rd party API’s into our existing web application ensuring proper migration of user data to prevent interruption of service. Added improvements to infrastructure such as automatically creating release branch pull requests to master post-release, integration tests that run post deployment to ensure environments remain stable, various scripts created and documented to speed up production incident resolution and support requests for reports. ### Senior Software Engineer @ Quativa Jan 2022 – Jan 2023 Designed and created production AWS Lambdas to integrate new financing partners into the application using .NET 6. Led Scrum team in scrum ceremonies and enhanced processes to remove roadblocks from our team and increase productivity. Implemented a new internal tool hub with SSO and Two-Factor authentication using Typescript/React to connect our existing tools together and make them more widely available internally. Designed and created multiple internal tools using Blazor/.Net 6 to alleviate time heavy tasks bogging down our support team. Developed a mapping solution for roofs to detect sq. footage from satellite imagery and provide it via api to vendor services that created an installation projection for solar panels. ### Senior Backend .NET Engineer @ Opendorse Jan 2021 – Jan 2022 | Remote Acted as technical lead on most back-end decisions and design as it pertained to my team. Created cost/risk analysis of libraries and 3rd party solutions being implemented as well as created proof of concepts to present to C Suite executives Increased performance of critical application processes improving run times to a usable state by optimizing SQL queries, Entity Framework queries, and business logic. Used Terraform to set up Infrastructure as code supporting a full CI/CD process and improve on time to get code to production. Created new Microservices in .Net 6 following the CQRS pattern to expand product functionality in line with stakeholders. ### Senior Software Engineer @ BrightBean Labs Jan 2020 – Jan 2021 | Greater Denver Area Created complex extensions of business logic without modifying core codebase to create maintainable and clear upgrade paths for clients. Led initiatives to improve internal processes, including framework selection, culture upgrades, and architectural best practices. Provided a unique skill set allowing the company to accept bids they’d normally need to decline. Increasing business by 15% Migrated 400k lines of legacy code from Webforms to React/.Net 6 using Test Driven Development. Mentored junior developers on their first projects helping them get up to speed and become productive. Used .Net 6 and Blazor to develop an inventory system based on open source hardware to automatically manage stock levels based on weight. Rewrote a platform’s file upload system to use Azure Blob Storage instead of local storage; resulting in increased flexibility and performance. ### .NET Developer @ Rural Sourcing Jan 2019 – Jan 2020 Handled pen-test security remediation for a client on a financial transfer web application fixing 25 pages of security vulnerabilities in a span of 2 sprints. Reverse engineered functionality from a 36 page legacy application and recreated it in .NET Core API/React with no surviving code base. Led team on recreation of a multi-million line data access layer including requirement gathering, client communication and execution. Created efficient and reliable geolocation service to limit users using the app within states where they were approved to operate. ### Full Stack Web Developer @ Diva Diamonds And Jewels Jan 2017 – Jan 2019 | Santa Fe, New Mexico Area Full Stack Web Developer, responsible for creating internal applications/websites for the company. Developed websites in PHP, Python, Javascript with Jquery. Developed applications primarily in Python using MSSQL for data storage. ## Contact & Social - LinkedIn: https://linkedin.com/in/jakekalkman --- Source: https://flows.cv/jakekalkman JSON Resume: https://flows.cv/jakekalkman/resume.json Last updated: 2026-03-22