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I'm Sean Connelly, a Senior Front-End / Product Engineer based in Montreal with 10+ years of experience building scalable web applications, dashboards, and MVPs. I specialize in React and Next.js, focusing on UI-driven product development, performance, and maintainable architecture. I enjoy collaborating with founders and cross-functional teams to ship high-quality products quickly. In my spare time I tinker with IoT firmware (C/C++), building homemade security cameras and sensors, Wi-Fi, OTA updates, API calls, and web interfaces for recording storage.…I'm Sean Connelly, a Senior Front-End / Product Engineer based in Montreal with 10+ years of experience building scalable web applications, dashboards, and MVPs. I specialize in React and Next.js, focusing on UI-driven product development, performance, and maintainable architecture. I enjoy collaborating with founders and cross-functional teams to ship high-quality products quickly. In my spare time I tinker with IoT firmware (C/C++), building homemade security cameras and sensors, Wi-Fi, OTA updates, API calls, and web interfaces for recording storage.

Sean Connelly

Full Stack Developer, Front-End Developer, Web Developer, +7

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I'm Sean Connelly, a Senior Front-End / Product Engineer based in Montreal with 10+ years of experience building scalable web applications, dashboards, and MVPs. I specialize in React and Next.js, focusing on UI-driven product development, performance, and maintainable architecture. I enjoy collaborating with founders and cross-functional teams to ship high-quality products quickly. In my spare time I tinker with IoT firmware (C/C++), building homemade security cameras and sensors, Wi-Fi, OTA updates, API calls, and web interfaces for recording storage.…I'm Sean Connelly, a Senior Front-End / Product Engineer based in Montreal with 10+ years of experience building scalable web applications, dashboards, and MVPs. I specialize in React and Next.js, focusing on UI-driven product development, performance, and maintainable architecture. I enjoy collaborating with founders and cross-functional teams to ship high-quality products quickly. In my spare time I tinker with IoT firmware (C/C++), building homemade security cameras and sensors, Wi-Fi, OTA updates, API calls, and web interfaces for recording storage.

Available to hire

I’m Sean Connelly, a Senior Front-End / Product Engineer based in Montreal with 10+ years of experience building scalable web applications, dashboards, and MVPs. I specialize in React and Next.js, focusing on UI-driven product development, performance, and maintainable architecture. I enjoy collaborating with founders and cross-functional teams to ship high-quality products quickly.
In my spare time I tinker with IoT firmware (C/C++), building homemade security cameras and sensors, Wi-Fi, OTA updates, API calls, and web interfaces for recording storage.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Front End Developer at Place Inc

September 30, 2022 - July 9, 2025

Created dashboards and editors for US real estate agencies enabling users to update and design flyers and postcards with Google geo mapping integration. Improved code efficiency through reusable components and newer CSS libraries. Implemented REST APIs and collaborated with back-end developers, including NodeJS tweaks. Contributed to email development efforts.

Front End Developer/Designer at Baseline Telematics

August 31, 2018 - July 9, 2025

Designed client dashboards in Figma, developing tools used by the third largest insurance company in Brazil. Involved in mobile app UI/UX design for pay-as-you-go insurance applications for clients in Brazil and France. Used ReactJS, Figma, CSS, and MaterialUI with a focus on SASS and Redux for state management.

Front-End Developer at Experience Place Inc

June 1, 2020 - August 1, 2025

Built dashboards and a custom marketing editor used by real estate agencies across the US. Developed user-facing design tools, geolocation features, and REST API integrations. Refactored legacy code into reusable components and modern CSS patterns.

Front-End Developer / UI Designer at Baseline Telematics

March 1, 2015 - August 1, 2018

Designed and developed dashboards and mobile app UI for large insurance clients. Delivered UI/UX for consumer insurance products across multiple markets.