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David Aranda's work experience is as follows:

1. Director of Engineering at Career Certified (2020-present):

- Built and expanded an engineering team from 6 to 20 members.

- Improved sprint fulfillment from 55% to 90% through scrum basics.

- Implemented development standards, including automation and code reviews.

- Reduced new bugs in production by 72% through unit tests and QA tests.

- Implemented infrastructure as code principles to eliminate 500 hours of manual work per year.

- Established vulnerability management program and weekly demos.

- Actively managed and monitored 3rd party development.

2. iOS Developer at Veritas Consulting (2019-present):

- Developed iOS applications, including a grocery store app and a church app for COVID-19.

3. Senior Software Engineering Manager at Nordstrom (2017-2020):

- Led and managed 4 teams and 15 people, emphasizing mentorship and individual development.

- Transformed Nordstrom Credit Card services organization into a unified team with self-service and improved customer experience.

- Enforced PCI and SOC2 standards for all applications.

- Improved development and delivery processes to align with standards.

- Managed 3rd party applications and vendor relationships for IVR and Texting development.

- Implemented disaster recovery strategy and improved call center effectiveness.

- Implemented self-service texting application and multi-site infrastructure plan.

- Implemented agile methodologies and "Incident Command" system.

4. Manager Software Development at Pearson (2015-2016):

- Led teams providing hybrid cloud infrastructure service.

- Product owner for a tool governing the use of Amazon Web Services and OpenStack.

- Prioritized new technological developments and met with users to understand customer needs.

- Presented roadmap to VPs and translated requirements into user stories.

- Conducted build-vs-buy analysis and managed vendor relationships.

5. Software Manager at Raytheon (2001-2015):

- Led four software teams and mentored front-line leadership.

- Developed software build plans and ensured software quality.

- Managed WBS tasks, QBD reports, and participated in code development.

6. System Administrator at IBM (1998-2001).

David Aranda has a diverse education history. David earned a Bachelor of Science degree in Computer Science and a Bachelor of Math degree in Computer Science from the Colorado School of Mines, which they attended from 1997 to 2001. David then pursued further education and obtained a Master's Degree in Theology from Denver Seminary from 2007 to 2013. David also holds a Master's Degree in Computer Science from the University of Colorado Denver, which they completed from 2002 to 2005. More recently, they obtained a Master's Degree in Global Management from the Thunderbird School of Global Management, where they studied from 2016 to 2019.

David Aranda has also acquired various certifications to enhance their skills and knowledge. Notably, they obtained the PMP certification from PMI in June 2014 and became a Certified Scrum Master certified by Scrum Alliance in February 2015. David also holds the AWS Cloud Practitioner certification from Amazon Web Services, earned in July 2018. David has completed several online courses, including "Complete iOS App Development Bootcamp" from Udemy in May 2020, "Master the OWASP Top 10" from LinkedIn in August 2020, and "Xcode 11 Essential Training" from LinkedIn in August 2020, among others. Additionally, they have received certifications in software architecture, DevOps, leadership, and other areas from various institutions.