Rex H. Email & Phone Number

Mountain View, Ca, Us

Improved Android OS developer experience with local testing/in IDE development greatly enhancing developer productivity. Set my client teams up for success by providing a clean separation of concerns between the test code and the test environments, ensuring tests could run on of off a device. Removed years worth of technical debt related to unmaintained and failed forms of testing with Robolectric without losing test coverage.

2019-2021/09 Diem build/release tooling. Learning a bit of rust. 2021/10+ Data Privacy. Python and C++ mechanisms to ensure data access conforms to regulations and company policies.

San Francisco, California, Us

Following work targets Salesforce's primary application actively developed by 3000+ developers.Built runtime and compile tooling to facilitate the generation of high quality software, providing as fast as possible feed back to developers. Of the compile time tooling, AptSpring stands out as a project used to verify a dependency injection controlled object graph is acyclic, complete, all types match, while encourage well factored components, at compile time.Supporting tooling including a shared maven parent, updates to m2e takari lifecycle plugin, as well as design for incremental support for annotation processing tools in an incremental javac compiler - similar to the "aggregating" increment apt support released by Gradle in early 2018.As for runtime improvements, designed and implemented tools to enforce proper component structure, including enforcing lazy instantiation of spring beans, and preventing the leaking of state via static mutable member variables via a restrictive class loader used in by teams in the ORM layer. Most recently, introduced Aspect Oriented Programming techniques and declarative schemas to a heavily used set of APIs.

San Francisco, California, Us

Following work is on primary Salesforce application actively developed by 2000+ developers. Extended capabilities of takari maven plugins to enforce modular (Directed Acyclic Graph) properties of the build via a security manager, much of my work is found in the Takari incremental build framework, linked below. Embedded that tooling with necessary approved lists in the application.Preformed necessary refactoring to migrate the application from a internal fork of Spring Framework 3.0.5 to Spring Framework 4.3.X (and later performed subsequent upgrades), including work to prevent the internal testing system from being a non-determinism multiplier. The context manages thousands of objects.Provided guidance to various teams throughout the organization on the use dependency injection, OO design paradigms and patterns, testing, build tooling, as well as other software engineering concerns.

San Francisco, California, Us

Built ui testing environment with consul, packer, and vmware. Targeting osx, ios, linux, and android environments. Various CI softwares, including jenkins, enterprise travis, and drone.io.

San Francisco, Ca, Us

Hoisted applications in to AWS. Built tooling using jclouds to rapidly spin up test environments or deploy whole environments. Designed, implemented, end-to-end testing system used to verify deployments (backed by spring, selenium, cucumber-jvm). Deployed site wide security with picketlink.

CI, Build, Tests, Metrics, Decoupling, Fast feedback oh my. Converted the build to maven. Set up a CI system. Built a unit testing framework over top of a java security manager to prevent unit tests from accidentally starting services, servers, etc, leading to test stability.

San Francisco, California, Us

Built testing tools to enhance developer productivity and encourage testing earlier in software development life cycle. Configured multi-node Jenkins server, nexus servers for the use of the IT QE organization. Provided technical leadership to multiple teams regarding build and test tools. Converted several projects to modularized maven builds.Educated teams on the use of multi-threaded testing, dynamic byte code compilations (jdk proxies/cglib), Jdk 1.4 Hot Code Replacement, and concepts surrounding coupling and cohesion in application design, testing and deployment.

New York, Ny, Us

Redesigned and reimplemented the companies build structures to support modular builds and automated testing.Modified and update over 50 modules to build the Macy.com website in a reproducible and testable way using maven2. Responsible for the configuration of Hudson, a continuous integration tool; Nexus, a maven artifact repository, and educating developers on the use of these tools.Provided technical leadership to a small team tasked with modifying the remaining company artifacts (other internal apps), as well as six other teams developing enhancement to the existing system, including two off shore teams. Reported to Director of Website Development Services.

San Mateo, California, Us

Worked on a medium sized team (15 devs/5 qa) developing an insurance billing application, BillingCenter. Worked in all aspects of product development, including performance tuning, automated testing, bug fixing, and new feature development.Particularly focused on database query performance.

Alpharetta, Ga, Us

Developed hudson plugins for distribution with the CUBiT project.Accepted severance package when project was abandoned, team members were either let go or absorbed in to more central projects to the companies revenue stream.

San Jose, California, Us

Developed new web services for internal payment processing on a medium size team. Primary technical resource on Maven2, JPA, and Spring, and open source java libraries in general. De Facto team/technical lead, though corporate policy prevented non-employees holding the role.E-Payment: Senior Developer. Introduced and mentored the development team on the use of JPA, Dozer, Spring, Maven2. Wrote a majority of the first phase of the application, including: Maven .pom files which build, run unit and integration test, produce reports, enforce policy, deploy, and can locally run the application. Hibernate3/JPA classes and helper library. Dozer converter from axis2 generated objects to internal JPA classes. Spring configuration files binding the application together. Deployed 2 phases of this project to production environment. E-Billing: Senior Developer. Brought in to enforce standards and rescue flailing project with a team of two other senior developers. Used above technologies, aside from Axis2. Using JAX-WS to conform with recently purchased solutions. Also responsible for advocating new technologies, generating proof of concept projects, and documenting the evolving application architecture standard and core libraries.

Munich, De