Źródło:
Senior Full Stack Web/Mobile Application Engineer
Happy Cog
United States
; United States (whole country)
Publication date: 13/11/2026
As our agency grows, we are taking on more and more web and mobile application projects for our clients. Our application frontends are typically built on Next.js and React, with React Native when a project calls for a mobile app. The REST and GraphQL APIs that drive them and integrate with other systems usually run on Node.js or Laravel.
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 the 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 projects, partnering with the project manager to lead the project's development team, and sharing ownership of financial and technical success, including managing scope against the budget and raising problems early; Serving as the point of escalation for other engineers on projects, keeping an eye on architectural decisions and code quality, and guiding more junior developers; Contributing to high-level architecture planning and consulting with the internal team on approach and level of effort; Working on aspects of application development outside of app code, such as database modeling, query optimization, logging and monitoring solutions, and other advanced requirements; Staying up-to-date on the latest development technologies and methodologies; Communicating directly with clients and project managers to understand requirements, work through specifications, make technical decisions, and present status updates and demosRequirements
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; 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 clients; Knowledge of Git and GithubNice to have
Experience with AWS services or other devops platformsBenefits
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 matchingHow to apply
Apply online: https://www.jobs.pl/en/oferta/102937802/aplikuj
JOBS.pl · https://www.jobs.pl/senior-full-stack-web-mobile-application-engineer-oferta-102937802





