Phil Callister

CEO

Minneapolis, Minnesota, United States16 yrs 6 mos experience
Highly StableAI Enabled

Key Highlights

  • Expert in AWS cloud architecture and serverless technologies.
  • Led successful data center migration project under budget.
  • Proven track record in mentoring and coaching development teams.
Stackforce AI infers this person is a Cloud Computing Architect with expertise in AWS and software development.

Contact

Skills

Core Skills

Amazon Web Services (aws)Solution ArchitectureGenerative AiPublic SpeakingSoftware DesignSoftware Development

Other Skills

Account ManagementPre-Sales Technical ConsultingEnterprise ArchitectureArchitectural DrawingsSystem ArchitectureServerless ComputingArchitectural DesignRust (Programming Language)Cost AnalysisArchitectural PatternsAWS ServicesElixirPlugOTPPhoenix

About

I love working through the entire process—from conceptualizing and designing to building the vision!

Experience

16 yrs 6 mos
Total Experience
2 yrs 3 mos
Average Tenure
3 mos
Current Experience

Slalom

Senior Architect

Feb 2026Present · 3 mos · Minneapolis, Minnesota, United States · Hybrid

Amazon web services (aws)

Enterprise Solutions Architect

Jun 2021Jan 2026 · 4 yrs 7 mos · Minneapolis, Minnesota, United States · Hybrid

  • Support Fortune 500 capital markets clients in designing AWS cloud architectures, and serve as a Subject Matter Expert by assisting peer Solution Architects with complex AWS Serverless technologies.
  • ▪Collaborate with customers and provide AWS best-practices and guidance across all organizational levels (Developer to C-suite)
  • ▪Deliver cost-effective, AWS cross-region architectural patterns across the enterprise, tailored to the customer's specific RTO/RPO requirements for their applications
  • ▪Conduct in-depth customer training on various AWS services by leading customized workshops. In one Amazon SageMaker workshop, I trained over 100 data scientists, resulting in widespread adoption of SageMaker within the organization.
  • ▪Provide support, cost analysis, architectural patterns, training, and guidance for a Fortune 300 customer's data center migration to AWS. The 1.5yr/$8m project was completed three months ahead of schedule and $500K under budget.
  • ▪As a Subject Matter Expert in AWS Serverless technologies, I support my fellow AWS SAs by assisting their customers with complex serverless challenges.
  • ▪Provide leadership, guidance, and architectural platform patterns for AWS GenAI services. A POC I built to demonstrate Amazon Bedrock for an asset management use case led to internal adoption and ultimately enabled the first customer-deployed production GenAI workload.
  • ▪To provide thought leadership to the broader AWS community, I spoke at public events recapping AWS re:Invent conferences, wrote AWS blog posts, and contributed sample code to the AWS Samples GitHub repository and Amazon’s Serverless Land.
Account ManagementPre-Sales Technical ConsultingEnterprise ArchitectureArchitectural DrawingsGenerative AISystem Architecture+7

Sportradar

2 roles

Global/Tribe Architect

Promoted

Oct 2019Jun 2021 · 1 yr 8 mos · Hybrid

  • Sportradar is a leading global sports technology company that creates immersive experiences for sports fans and bettors. As the Global (Tribe) Architect—following a Spotify-like model—for Sportradar’s Sport Media division, I was responsible for the overall architectural strategy of our tribe, which consisted of five squads (teams).
  • ▪Mentored, coached, and supported development teams—providing hands-on guidance and stepping in deeply when projects faced critical challenges.
  • ▪Partnered with product and sales teams to define and shape technical strategies for our sports media products. For example, I proposed and demonstrated how converting our REST APIs to GraphQL could enable the creation of an entirely new media offering.
  • ▪Helped development teams bootstrap new projects by creating foundational structures and components along with architectural patterns that simplified development and maintained consistency.
  • ▪At a global level, I collaborated with fellow global (tribe) architects to define architectural standards and develop POCs that enabled cross-tribe integrations. For example, I worked with a peer architect to design a data model that mapped betting entities to media entities, providing a foundation for seamless cross-product integration.
  • ▪As a global leader, I relocated to Slovenia for 3 months to share best practices and learn directly from our European teams. This immersive experience strengthened collaboration with my international peers and improved our alignment.
Software DesignElixirPlugEnterprise ArchitectureArchitectural DrawingsSystem Architecture+9

Software Lead

Apr 2015Oct 2019 · 4 yrs 6 mos · Hybrid

  • Served as the lead developer (full stack) for hockey, basketball, and golf, playing a key role in building and maintaining platforms for data collection, statistical analysis, and dissemination of sports data via REST, HTTP Streaming, and GraphQL APIs for leagues including the NHL, NBA, NCAA, and PGA.
Software DesignElixirPlugWeb ServicesJavaScriptSprint Planning+10

Fastpencil

Software Professional

Aug 2014Mar 2015 · 7 mos · Greater Minneapolis-St. Paul Area · Hybrid

  • FastPencil was an online self-publishing platform designed to empower authors throughout their creative and publishing journeys. Working within a highly skilled software team, I contributed to the development of tools (full stack) that enabled authors to "Write Once—Publish Anywhere." We operated in a Scrum-based Agile environment, leveraging a range of Ruby technologies hosted on AWS to deliver a seamless authoring and publishing experience.

Ironsafe

Director, Mobile Development

Feb 2013May 2014 · 1 yr 3 mos · Remote

  • IronSafe specialized in digital asset management. As one of the three founding partners, I wore multiple hats—leading the design and development of both the backend and frontend of our core product using Ruby on Rails and CoffeeScript, while also building several iOS mobile prototypes.
  • I worked closely with customers to understand their needs and delivered tailored solutions that integrated seamlessly into the IronSafe platform. Notably, IronSafe was successfully acquired by Envisant (https://www.envisant.com/blog/envisant-acquires-ironsafe-software-system/)

Life time inc.

Solutions Architect

Jun 2012Feb 2013 · 8 mos · Greater Minneapolis-St. Paul Area · Hybrid

  • I Led the mobile technology strategy for Life Time Fitness’s consumer-facing mobile applications. Partnered with multiple departments to define guidelines and establish architectural standards for mobile initiatives across the organization. Spearheaded the development of Life Time’s first mobile apps, including the Life Time Member App and Member Advantage.
Solution Architecture

Callister software solutions

Full Stack Mobile Development

Jul 2008Jun 2012 · 3 yrs 11 mos · Greater Minneapolis-St. Paul Area · Hybrid

  • Designed and developed software solutions using Ruby (Rails/Sinatra), with a focus on building and seamlessly integrating data-driven iOS and Android mobile applications. Led architecture, design, implementation, deployment, and provided end-to-end project support. Collaborated closely with business and technical leaders to deliver precisely tailored solutions while maintaining simplicity and avoiding unnecessary complexity.

Trade wizard

Cofounder - Chief Software Architect

Sep 2006Jul 2008 · 1 yr 10 mos · Remote

  • The Trade Wizard platform enabled users to trade a wide range of financial instruments, including Futures, FOREX, Stocks, and Options, while supporting transactions across multiple clearinghouses. As Cofounder and Chief Software Architect, I was instrumental in driving technology decisions and leading the development of the platform. The system featured a J2EE-based backend and a Windows desktop trading application built with .NET C#.

Lawson software

Sr. Systems Software Eng.

Jul 2005Sep 2006 · 1 yr 2 mos · St Paul, Minnesota, United States · On-site

  • As a Sr. Systems Software Engineer, I contributed to Infor’s (formerly Lawson’s) advanced LANDMARK technology platform. Working within an Agile environment, I collaborated with a team of engineers to develop an application development environment built with Java and integrated into the Eclipse platform using SWT plug-in technology.

Education

Minnesota State University, Mankato

BS — Computer Science

Hudson High

Diploma — General

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