Corey Christous

Software Engineer

Cambridge, Massachusetts, United States17 yrs 6 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in cloud infrastructure optimization and cost reduction.
Led successful migration to SemaphoreCI, enhancing security.
Proven track record in developing operational tooling for AWS.

Stackforce AI infers this person is a SaaS Infrastructure Engineer with extensive experience in cloud optimization and CI/CD processes.

Contact

Skills

Core Skills

InfrastructureContinuous DeliveryCloud Computing

Other Skills

BashTerraformAWS LambdaAWS CloudFormationJavaScriptShell ScriptingPython (Programming Language)React.jsNode.jsJinjaObject Oriented DesignC++Software EngineeringLinuxEmbedded Systems

About

Experienced technical lead with a history of building software development and testing infrastructure. Skilled in Python, JavaScript, Java, C++, Ansible, Docker, AWS. Strong aptitude for efficiency and optimization.

Experience

17 yrs 6 mos

Total Experience

3 yrs 6 mos

Average Tenure

4 yrs 1 mo

Current Experience

Confluent

2 roles

Staff Software Engineer I

Mar 2025 – Present · 1 yr 3 mos · Remote

Senior Software Engineer II

May 2022 – Mar 2025 · 2 yrs 10 mos · Remote

Migrated from SaaS SemaphoreCI to self hosted SemaphoreCI. Included creating infrastructure as code, a migration plan, and a zero down time migration
Developed macOS self hosted SemaphoreCI agent images and infrastructure and contributed it back to the vendor
Developed system for automated infrastructure pipeline deploys using Terraform and SemaphoreCI pipelines
Identified and deleted underutilized cloud resources, and identified and remediated inefficiently designed infrastructure, saving the company many tens of thousands of dollars per month
Created a system for continually identifying cloud waste using an event oriented architecture
Led a team of ~6 engineers
Delivered on a company wide initiative to improve the security and compliance posture of developer tooling. Some projects:
Migrated projects off Jenkins to SemaphoreCI and decommissioned Jenkins
Changed SemaphoreCI projects to use short lived credentials via OIDC
Redesigned CI system infrastructure to allow external contributors to view CI job logs for their contributions
Changed various GitHub repo configurations organization wide to prevent unilateral actions
Redesigned artifact storage repository permissions to reduce surface area
Helped design and implement system to detect pull request approval bypasses
Migrated resources across AWS accounts
Created and modified infrastructure to support disaster recovery
Stood up and configured renovatebot for company wide rollout
Implemented a mechanism for obtaining command level metrics in the CI system
Took ownership of an existing SonarQube Community implementation. Rebuilt it from the ground up using SonarQube Enterprise and standard tooling.
Built a private terraform registry

BashInfrastructureContinuous Delivery

Amazon

System Development Engineer II

Dec 2018 – May 2022 · 3 yrs 5 mos · Boston, Massachusetts

I led a team which provided internal operational tooling for AWS Elastic File System. Tools included a custom monitor and dashboard manager, an operational portal, various command line tools, job orchestration hosts, an availability data manager, and runbooks as code.
When I joined the team, it had been under delivering on its commitments, with a poor planning and work tracking process, an unclear direction, and severe operational workload. I developed a set of working processes and technical vision which drastically improved the oncall burden and increased team velocity.
My project work mainly included improvements to usability and functionality of my team's tools and migrations away from legacy internal Amazon and external tools to more secure, scalable ones.

BashInfrastructureCloud Computing

Foundation medicine

2 roles

Lead DevOps Engineer

Mar 2018 – Nov 2018 · 8 mos · Cambridge, Massachusetts

BashInfrastructure

Senior DevOps Engineer

Jun 2017 – Mar 2018 · 9 mos · Cambridge, Massachusetts

Set up the infrastructure for engineering development and operations and defined the workflows for using it. Performed numerous tool evaluations. Toolset included GitHub Enterprise, Jenkins 2, Docker, AWS CloudFormation, Artifactory, DataDog, New Relic, Logz.io, SonarQube. Migrated existing teams/applications to CI/CD. Created tooling and scripting in Python, BASH, and Groovy.

BashInfrastructure

Dataxu

3 roles

Automation Lead

Mar 2017 – May 2017 · 2 mos · Boston, Massachusetts

Leader of a team focused on automated builds, tests, and deployments. Extensive work with AWS as well as other clouds and data centers. Designed and implemented deployment pipeline automation using Jenkins, GitHub, and Ansible. Modernized legacy system Java testing frameworks. Created automated end to end testing framework for the entire platform. Created many application testing frameworks in most cases using Python and Robot Framework. Designed and implemented project templates, which included Maven, Setuptools, static analysis, code coverage.

BashInfrastructure

Senior Software Engineer In Test

Mar 2015 – Mar 2017 · 2 yrs · Boston, Massachusetts

BashInfrastructure

Software Engineer In Test

Dec 2012 – Mar 2015 · 2 yrs 3 mos · Boston, Massachusetts

BashCloud Computing

Deka research & development

3 roles

Software Engineer

Aug 2011 – Dec 2012 · 1 yr 4 mos · Manchester, New Hampshire

Led the automated software testing efforts for a Home Hemo Dialysis machine from top to bottom of the software stack from early development stages through clinical trials. Solely owned a few small software subsystems, some of which interfaced with third party software. Partial owner of a few of the large software subsystems.

Bash