Timothy Dillman

CEO

St Louis, Missouri, United States16 yrs 4 mos experience
AI EnabledAI ML Practitioner

Key Highlights

  • Led development for high-traffic iOS applications.
  • Improved app stability and user experience significantly.
  • Expertise in AI and mobile application development.
Stackforce AI infers this person is a Mobile Application Developer with expertise in Fintech and Food & Beverage industries.

Contact

Skills

Core Skills

Ios DevelopmentArtificial Intelligence (ai)PythonDjangoTeam LeadershipUser Experience (ux)

Other Skills

iOS DesignMobile Application DevelopmentMobile EnterpriseLarge Language Models (LLM)SwiftUIKitCombineRESTful API integrationHTMLDjango REST FrameworkCascading Style Sheets (CSS)SvelteJavaScriptTensorFlowCSS

About

Experienced iOS App Developer with a proven track record in the information technology and services sector. Possessing robust engineering expertise in React Native, iOS, and Android platforms. With over 7 years of professional experience, I have consistently delivered high-quality solutions to diverse projects.

Experience

16 yrs 4 mos
Total Experience
1 yr 5 mos
Average Tenure
1 yr 4 mos
Current Experience

Vampire penguin of stl

Owner and Operator of Vampire Penguin

Jan 2025Present · 1 yr 4 mos · St Louis, Missouri, United States · On-site

  • Owner and operator of the Vampire Penguin Franchise in Saint Louis, MO.

Midwestern

iOS Developer

Aug 2024Jan 2025 · 5 mos · St Louis, Missouri, United States · Remote

  • Highlights
  • Developed and maintained a high-traffic iOS application enabling customer interaction with LLM-powered AI Agents.
  • Collaborated on end-to-end feature development, UI/UX enhancements, and performance optimization.
  • Migrated multiple Kotlin Multiplatform Mobile (KMM) modules to native Swift, improving maintainability and platform performance.
  • Contributed to increased paid user conversions through optimized onboarding and engagement flows.
  • Boosted App Store rating through stability improvements and user-centric design updates.
  • Description
  • Led ongoing development and support of the flagship iOS application enabling users to engage with Large Language Model (LLM) agents for real-time query resolution, advanced research, and document analysis. Applied strong skills in Swift, UIKit, Combine, and RESTful API integration to deliver a seamless and responsive user experience. Partnered with cross-functional teams including backend, product, and design to align features with customer needs and business goals.
iOS DesignMobile Application DevelopmentMobile EnterpriseUser Experience (UX)Artificial Intelligence (AI)Large Language Models (LLM)+1

Harpe engineering solutions, inc.

Software Developer

Jul 2023Sep 2024 · 1 yr 2 mos · Remote

  • Designed and implemented advanced signal analysis and cryptographic tooling in support of Department of Defense (DoD) operations. Delivered performant, scalable software solutions by leveraging open-source technologies and modern development frameworks.
  • Key Responsibilities & Achievements:
  • Developed tools for signal processing, decryption, and data interpretation using Python and machine learning frameworks such as TensorFlow.
  • Built and maintained RESTful APIs using the Django REST Framework, enabling secure and efficient communication across distributed systems.
  • Engineered responsive, user-friendly web interfaces using Svelte, JavaScript, HTML, and CSS to visualize signal data and tool output.
  • Ensured code quality, security, and performance for applications used in sensitive defense and intelligence environments.
  • Collaborated in Agile development cycles, including sprint planning, peer reviews, and continuous integration.
HTMLDjango REST FrameworkPythonDjangoCascading Style Sheets (CSS)Svelte+2

Bounteous

2 roles

Lead iOS Developer

Promoted

Jan 2022Oct 2023 · 1 yr 9 mos

  • Led the iOS development team for Shake Shack’s flagship mobile application, serving over 1.2 million weekly users. Oversaw feature delivery, code quality, release management, and cross-functional collaboration between product, design, and engineering teams.
  • Key Responsibilities & Achievements:
  • Team Leadership & Agile Delivery: Managed a team of iOS developers, facilitated sprint planning, and streamlined collaboration between business stakeholders and the dev team.
  • SwiftUI Component Library: Designed and implemented a scalable SwiftUI component library based on UI/UX specifications, accelerating development velocity by over 30%, doubling average story point completion per developer.
  • Test Coverage & Code Quality: Mentored team members on writing testable, maintainable Swift code, increasing unit test coverage from 20% to 85%, which contributed to significantly improved app stability.
  • Crash-Free Stability: Improved crash-free user rate from 99.85% to 99.94%, despite scaling traffic, through refactoring, testing, and performance optimizations.
  • Accessibility Champion: Drove adoption of accessibility best practices, collaborating with design and QA teams to create a more inclusive user experience and enabling automation of end-to-end accessibility tests.
  • Release Management: Oversaw app releases, version control, and CI/CD pipelines to ensure timely and stable deployments.
SwiftUIiOS DesigniOSiOS DevelopmentSwift (Programming Language)RxSwift+1

Senior iOS Developer

Jul 2021Oct 2023 · 2 yrs 3 mos

  • Contributed to the evolution of Shake Shack’s mobile app experience, quickly ramping up and delivering key features within the first two weeks. Played a pivotal role in transforming the app’s performance, stability, and development velocity through technical leadership and team enablement.
  • Key Responsibilities & Achievements:
  • Rapid Onboarding & Contribution: Made impactful contributions within weeks of joining by rapidly understanding a large, complex codebase built with Swift, SwiftUI, and RxSwift.
  • Team Velocity & Architecture Improvements: Spearheaded the adoption of modern iOS SDKs and development methodologies, significantly boosting team efficiency and delivery speed.
  • Crash Rate Reduction: Led technical efforts—through pair programming, code reviews, and mentoring—that improved app stability from under 90% to over 99% crash-free sessions.
  • Knowledge Sharing & Mentorship: Fostered a culture of continuous learning by promoting self-study, time-boxing, and collaborative problem-solving, which elevated team capability and code quality.
  • Recognized Leadership: Promoted to Lead iOS Developer due to proven technical leadership, proactive team advocacy, and consistent delivery of high-impact results.
  • Award-Winning Work: Contributed to the team’s recognition with a Webby Award for Best Dining UI Experience.
SwiftUISwift (Programming Language)iOSiOS DesigniOS DevelopmentXcode+2

Rural sourcing is now sparq (teamsparq.com)

iOS Developer

Jun 2020Jul 2021 · 1 yr 1 mo · Hybrid

  • Led and contributed to multiple client-facing iOS projects across FinTech, healthcare, and insurance industries. Focused on delivering scalable, user-friendly mobile solutions that improved operational efficiency and enhanced user experiences.
  • Key Responsibilities & Achievements:
  • Team Leadership & Delivery: Led a cross-functional iOS team to design and develop a sales enablement app for franchise owners, digitizing legacy pen-and-paper workflows into mobile-first forms.
  • Healthcare Mobile Solutions: Architected a mobile insurance card dashboard to help users estimate procedure costs and manage benefits—improving transparency and user autonomy.
  • Enterprise Safety Tooling: Built an emergency announcement and check-in system to support employee safety and accountability across large organizations.
  • Client Engagement: Collaborated directly with product owners and stakeholders to translate requirements into fully functional Swift-based solutions under tight deadlines.
  • Enhanced codebase maintainability using Swift, UIKit, SwiftUI, and Realm for local data persistence.
iOSUIKitXcodeRealm DatabaseSwiftUISwift (Programming Language)+2

Proximity

Mobile Engineer

Apr 2018Jun 2020 · 2 yrs 2 mos · Remote

  • Served as lead developer for the Proximity Mobile app, delivering and maintaining core functionality across both iOS and Android platforms. Focused on secure mobile access, digital keys, and multi-location coworking support.
  • Key Responsibilities & Achievements:
  • Cross-Platform Development: Led end-to-end feature implementation for both iOS (Swift/Xcode) and Android (Kotlin/Android Studio) platforms.
  • Digital Access & Nomad Features: Developed core app functionality allowing users to access digital keys and utilize Nomad capabilities for seamless entry across shared coworking spaces.
  • UI/UX Collaboration: Partnered with product and design teams to translate branding and UX requirements into polished mobile interfaces, ensuring visual consistency and user-friendly navigation.
  • Maintenance & Optimization: Owned technical upkeep, bug fixes, and performance tuning to maintain app reliability and security across both platforms.

Launch peer

iOS Developer

Nov 2016Jan 2018 · 1 yr 2 mos · Charleston, South Carolina Metropolitan Area · Hybrid

  • Collaborated with early-stage startups to transform concepts into fully functional iOS applications, leading development from initial storyboarding and prototyping through to App Store deployment. Delivered production-ready apps with real-time features and user-first design.
  • Key Responsibilities & Achievements:
  • Partnered with entrepreneurs and small teams to design, develop, and release custom iOS apps tailored to startup needs and market fit.
  • Developed and launched several apps, including HOBA and Redunnit, focusing on social media, real-time chat, live location tracking, and multimedia sharing.
  • Led architecture and implementation of real-time communication using technologies like WebSockets, Firebase, and native iOS frameworks.
  • Ensured seamless UX/UI by working closely with designers and refining usability through iterative user feedback.
  • Oversaw full app lifecycle—from wireframes to publishing—including beta testing, App Store compliance, and analytics integration.

Taxslayer, llc

iOS Developer

Feb 2016Nov 2017 · 1 yr 9 mos · Evans, GA · On-site

  • Led iOS development for TaxSlayer’s suite of mobile applications, including native and cross-platform solutions. Delivered innovative tax and financial tools across iOS, watchOS, and React Native, while contributing to server-side systems and enabling white-labeling initiatives.
  • Key Responsibilities & Achievements:
  • Maintained and enhanced the TaxSlayer iOS app, implementing feature upgrades, UI refinements, and stability improvements.
  • Developed an Apple Watch companion app featuring a real-time tax calculator for users' "tax perks" profiles.
  • Built a Snap Tax mobile app allowing users to upload tax forms and connect with local tax professionals—also enabled white-labeling for partner service bureaus.
  • Modernized the core TaxSlayer mobile codebase by migrating from Objective-C to Swift, introducing modern architecture and performance improvements.
  • Created and maintained several reusable CocoaPods, streamlining internal white-label development across multiple apps.
  • Contributed to server-side systems, including enhancements to the C# .NET tax calculation engine.
  • Led updates to the "Tax Caster" application, refactoring legacy code to utilize Swift 2.0 standards.
  • Maintained and upgraded Workful POS (iOS & React Native) and TaxesToGo, converting native implementations to React Native for cross-platform support.
  • Provided support for the LegalSpark Android app, ensuring consistent performance and user experience.

Geekin radio

iOS Developer

Jan 2014Feb 2016 · 2 yrs 1 mo · Mt. Pleasant South Carolina · On-site

  • Developed a groundbreaking social listening platform for both iOS and Android, boasting a patented method enabling seamless synchronization of multimedia content playback across multiple devices, regardless of network connectivity (be it Wi-Fi or cellular).
  • Leveraging open-source technologies like Cocoapods and Fastlane has streamlined the development process, ensuring efficiency and reliability. Additionally, these tools have facilitated seamless deployment to the app store and rigorous testing protocols.
  • Notably, the application has garnered a stellar 4 out of 5 star rating on the App Store, reflecting its popularity and user satisfaction. Furthermore, it has been prominently featured on the Music trending page, underscoring its significance and impact within the industry.
iOS DesignUser Experience (UX)SwiftUISwift (Programming Language).NET FrameworkwatchOS+1

Clemson university

REU Data Intensive Computing

May 2013Jul 2013 · 2 mos

  • Research assistant for Clemson University working on big data analytics topics. Migrating company data to Clemson servers. Performing metric analysis on cutting edge data analytics software and databases (mongodb, hbass, etc. )

Bmw group

IT Research and Development

Jan 2012May 2013 · 1 yr 4 mos

  • Provided many use cases for cloud-based technologies that would greatly benefit the BMW Group.
  • Created a cloud-based application using Google App Engine and Python. Created a iPhone
  • application for use at a dealership. Provided a streaming solution for use with product
  • presentation software, which will be utilized in 2014.
  • Co-developed patents for BMW involving radio communication technology.

University of south carolina

Student

Aug 2011Jan 2013 · 1 yr 5 mos

  • Study Mathematics and Computer Engineering

Unilever

IT Finance

May 2011Aug 2011 · 3 mos

  • Provided automated application solutions with excel VBA and custom-made python based
  • programs. Worked with and diagnosed scripting issues within SAP system. Worked with Remedy
  • and heavily with HP Quality Center. Created a 3rd party application to interact with HP QC Open
  • Test Architecture. Created a tool that allowed automated defect tracking using VB and OTA.
  • Created text-processing software to work with SAP unformatted databases using the Python
  • programming language.

Sonoco products inc

IT Support

Jan 2011May 2011 · 4 mos

  • Provide technical support for both hardware and software on new systems for the Sonoco local
  • and world campuses. Provide technical support for in-house software and commercially
  • purchased software such as Optivision, MP2, Crystal Reports, and Safari. I also provided in person
  • and phone technical support for Sonoco employees.

Sonoco

COPS Workstudy

Jan 2010May 2011 · 1 yr 4 mos

  • Global IT Desktop and software support for all Sonoco employees.

Coker college

Coker IT

Sep 2009May 2011 · 1 yr 8 mos · Hartsville

  • Supported the campus computers and equipment and serviced user's personal computers.

Coker college it

IT Support

Sep 2009May 2011 · 1 yr 8 mos

  • Maintained the smooth operation of the campus and library network. Assisted residence with
  • technical support for both the college owned computers and their personal laptops.

Wlm

Video Production

Oct 2008Dec 2010 · 2 yrs 2 mos

  • Designed television program graphics and assisted the television department director on creating
  • television programming for thirty-minute and sixty-minute slots. Provided some technical
  • support regarding Microsoft Windows Server 2003 and for the Apple iMac video production
  • computer.

Education

University of South Carolina

Jan 2011Jan 2015

Coker University

Jan 2009Jan 2011

Coker University

mathematics and computer science

Jan 2009Jan 2011

Midland Valley High School

mathematics and information technology

Jan 2005Jan 2009

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