Jeffrey Selk Email & Phone Number

Denver, Colorado, United States

* Transformed the Wallet team’s approach to testing by introducing effective strategies for unit tests, integration tests, and UI testing. Provided direct coaching and shared proof of concepts, significantly improving team competency and product reliability.* Served as the primary contributor to the Android codebase, focusing on critical features such as new employee onboarding, time tracking, and integrations with multiple third parties. Identified and resolved complex multithreading issues, eliminating obscure UI bugs and crashes that enhanced user experience.* Spearheaded development for the members portal as the primary code contributor, tackling complex integrations with authentication and session management systems.* Collaborated closely with the Identity team to enhance security features by implementing plugins to KeyCloak for two-factor authentication, meeting stringent client security demands.* Dedicated to team growth by mentoring peers in Java and disseminating best practices, elevating overall team skills and project outcomes.* Technologies used: kotlin, java, ruby on rails, react

Greater Denver Area

* Hired new team of 5 engineers* Managed and mentored team on principles of enablement and empowerment * Oversaw 18 month long, cross functional project bringing faster payment speeds to all customers while appropriately monitoring and managing risk to business* Engineering lead of the 2020 class of engineering interns, resulting in the highest offer and return rate

Greater Denver Area

* Manage and mentor 7 direct reports, conduct performance reviews, responsible for team hiring / recruiting* Lead Engineering team by building a culture focused on quality, mentoring developers, advising product, and being a high individual contributor* Developed, maintained and monitored scalable Golang services to manage order processing between Magento ecommerce framework and printing vendors* Rebuilt struggling, poorly performing platform to handle 2X increase in revenue* Successfully lead 18 month long build of new product building experience architected on several scalable Java / Spring Boot microservices, a React / Redux frontend, and Dynamodb database* Owned DevOps responsibilities utilizing AWS for all infrastructure with Fastly as CDN* Member of Executive Leadership Team* Technologies: Java with Spring Boot, React with Redux, Golang, PHP, Magento 2, Docker, New Relic, Chef, Terraform, Serverless

Greater Denver Area

* Platform engineer in Docker-based microservice infrastructure hosted in AWS using Mesos and Marathon, communicating via Zookeeper, RPC and HTTP* Wrote highly scalable services in Scala using Finagle/Finatra and Java using Spring* Invited to Tech Lead Guild, joining a few other senior engineers to help lead Tendril’s engineering efforts

Greater Denver Area

* Lead team of developers in all backend, API tasks* Started Java API project from scratch built on Spring* Managed code deployments to 32 API servers handling over 100K requests per minute and 6TB of daily uploads* Coordinated needs with internal API clients while supporting external clients* Oversaw all aspects of code security built on Spring Security (Oauth2)* Integrated internal CMS tools into common authentication scheme* Integrated Spring AMQP into project for RabbitMQ messaging

Greater Denver Area

* Participated in both backend Java and frontend Javascript development* Technologies used: Java, Javascript, Spring, Terracotta, Javassist, git, Jquery, Jqplot, ExtJs, Kryo, Maven, Cometd

Baltimore, Maryland Area

Fort Collins

Buffalo, Ny