[Remote] Senior Full Stack Web/Mobile Application Engineer

Note: The job is a remote job and is open to candidates in USA. Happy Cog is a growing interactive agency that designs, develops, and markets websites and mobile applications for a wide variety of clients. The Senior Full Stack Web/Mobile Application Engineer will build and lead the development of web and mobile applications, use AI agents within a spec-driven process, guide technical architecture and code quality, and communicate directly with clients and project managers.

Responsibilities

• Building new applications, websites, and features with a variety of tools, languages, and technologies, including Next.js, React, React Native, Node.js, and Laravel
• Planning and implementing work with AI agents, using our spec-driven process to settle the approach before the code gets written, and helping set the AI development standards that more junior engineers follow
• Acting as the Technical Lead (TL) on your projects. You'll partner with the project manager to lead the project’s development team, and you'll share ownership of the project's financial success alongside its technical success, including managing scope against the budget and raising problems early enough to do something about them
• Serving as the point of escalation for other engineers on your projects, keeping an eye on architectural decisions and code quality, and guiding more junior developers
• Contributing to high-level architecture planning and consulting with our internal team on approach and level of effort
• Flexing your muscles on aspects of application development outside of app code: database modeling, query optimization, setting up efficient logging and monitoring solutions, and other advanced requirements for highly functioning apps (you do not need to be a DBA or devops engineer)
• Staying up-to-date on the latest development technologies and methodologies
• Communicating directly with clients and our project managers to understand their requirements, work through specifications, make technical decisions, and present status updates and demos

Skills

• You should have a minimum of 5 years of professional experience, preferably in a technical role and with agency experience
• Full Stack experience with a variety of frontend and backend tools and technologies and their surrounding ecosystems is a requirement for this role
• Experience interacting with and building backend REST and GraphQL APIs
• Knowledge and experience with integrating with third party APIs
• Hands-on experience using AI agents for planning and development in a production codebase, including reviewing what the agent produces before it ships
• Experience leading a development team or acting as a technical lead, including partnering with a project manager on scope, estimates, and budget
• Comfort talking directly with clients about requirements, technical trade-offs, and project status
• Experience building out application user experiences and understanding user behavior and intent, and using this information to build intuitive apps and websites for our clients
• Knowledge of Git and Github, we use these on all projects
• Experience with AWS services or other devops platforms is a plus

Benefits

• Healthy work/life balance
• A creative environment to do the best work of your career
• An amazing team of developers, designers, marketers, and project managers.
• Paid Parental Leave
• Paid vacation and sick time off
• Health, Dental, and Vision insurance
• Retirement plan with company matching
• Fully remote

Company Overview

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