Eric Callan

Eric Callan

Engineering Leader

Work with me

Engineering Leader + Web Technologist

Exploring technology at the intersection of people, products, and possibility.

Connecting people, systems, and ideas into products that scale.

Eric Callan

Hi, I'm Eric.

I'm an engineering leader with over a decade of experience building web applications at scale, growing high-performing teams, and driving cross-functional collaboration.

I've led projects ranging from interactive IoT installations to large-scale product migrations, and I bring a balance of technical depth, product thinking, and people-first leadership to every role.

I've delivered impactful tools for major brands, replatformed legacy systems, and built high-performing teams by implementing clear Agile practices , structured growth opportunities, and thoughtful mentorship that helps engineers thrive. I care deeply about accessibility, developer experience, and creating environments where teams can do their best work - because at the heart of technology are people: those who build it and those who rely on it.

Helping engineers bring ideas to life and users complete their journey.

Let's keep the web fun.

DraftKings

2025

Software Engineering Manager

Just getting started on this exciting journey! Leading engineering teams in the world of sports betting and gaming, more to come soon...

ReactTypeScriptManagement

Grubhub

2024 - 2025

Engineering Manager, Diner

Led a distributed team of 9 engineers on the core Diner platform, facilitating agile ceremonies, ensuring production readiness, and promoting frontend consistency. Owned the frontend experience of grubhub.com, specifically managing the menu, carting, payment, and checkout flows. Fostered strong cross-team collaboration through cultural initiatives, effective PR practices, and proactive communication strategies. Supported engineers in professional growth through performance reviews, on-call rotations, and incident response, while guiding successful delivery of various web platform enhancements.

ReactJavaScriptTypeScriptAgile / ScrumManagementIncident ResponseCross-Team CollaborationCoachingMentorshipe-commerce

Grubhub

2021 – 2024

Engineering Manager, Merchant + GH Direct

Managed a team of 6 frontend web engineers responsible for GH Direct, Grubhub's white-label merchant ordering platform, while also contributing to core merchant dashboard applications. Led a significant API migration effort, transitioning GH Direct from deprecated legacy services to Grubhub's modern technology stack, significantly reducing technical debt and operational overhead, enhancing performance, and delivering millions in annual savings. Focused strategically on frontend modernization, fraud prevention, and enhanced observability to ensure platform security and reliability. Established structured Agile practices, clear on-call procedures, and mentored team members through promotions and growth opportunities.

ReactJavaScriptTypeScriptAgile / ScrumManagementIncident ResponseCross-Team CollaborationCoachingMentorshipe-commerce

Grubhub

2019 – 2021

Senior Frontend Engineer

Collaborated on and maintained the GH Direct Web SDK, used to power custom merchant storefronts. Collaborated with design and product to build scalable UI systems, implement accessibility audits, and deliver features like category-based menus and custom gift card flows. Introduced E2E testing with Cypress and improved CI with GitHub Actions. Aided in the development of a custom self-service builder and styler for merchant onboarding and branding

ReactTypeScriptE2E TestingGitHub ActionsAccessibilitye-commerce

MMB

2017 – 2019

Senior Frontend Developer

Delivered interactive, design-forward web applications using React, CSS3, and vanilla JS for clients like Thompson Island Outward Bound and Under Armour. Created reusable component systems with motion-based UX and built POCs integrating beacon tech for in-store retail applications. Developed e-commerce integrations and streamlined client workflows with CMS customizations.

Reacte-commerceCraft CMSWordPressPHPLaravel

SapientRazorfish

2016 – 2017

Senior Frontend Developer

Developed accessible and scalable web applications using React, Redux, and custom WordPress themes. Designed and built a WordPress-based adoption platform for Petco Foundation, enabling users to easily search and adopt pets. Delivered comprehensive ADA audits and accessibility remediations for clients including Keurig. Led technical collaborations with Marriott and Signet for on-site integration and testing of React-based point-of-sale (POS) solutions.

ReactReduxWordPressPHPADA CompliancePOS Integration

Partners + Simons

2016

Creative Technologist

Prototyped AI and voice-based interfaces for tradeshow demos using early speech-to-text and chatbot tooling. Developed iOS and web-based marketing presentations and interactive product showcases for healthcare and B2B clients.

ReactAIVoice InterfacesiOSChatbotsReact NativePHPLaravel

Hill Holliday

2013 – 2016

Web Developer

Developed digital campaigns and product prototypes for clients including Bank of America, Liberty Mutual, the City of Boston, and Above the Influence. Built an iOS ported savings app with Backbone.js, Laravel and Stripe, a Twitter and Instagram streaming dashboard, social media integrations and custom proximity-based beacon installations. Collaborated with creative teams to bring concepts to life, owning full-stack development from prototyping to production.

LaravelBackboneReactPHPNodeStripeREST APIsBeacon TechSwiftIOT

Liberty Mutual

2013

IT Analyst

Joined the developer resource pool and contributed to internal Java-based tools within agile teams. Gained foundational experience in large-scale enterprise systems and agile workflows.

JavaJ2EEEnterprise Systems

Get in Touch.

I'm always interested in hearing about new projects and opportunities.