> Markdown version of [/jobs/ext/3686683-senior-frontend-engineer](https://www.wearedevelopers.com/jobs/ext/3686683-senior-frontend-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Frontend Engineer - **Company:** CI&T, Inc. - **Location:** Campinas, United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Application Layers, Business Logic, Application Performance Management, Architectural Patterns, Automation of Tests, Code Review, Continuous Integration, Software Debugging, Payment Systems, Release Management, Next.js, Software Engineering, Software Systems, Data Streaming, TypeScript, Cloud Platform System, ReactJS, Backend, Front End Software Development - **Published:** October 11, 2026 - **Apply:** https://arc.dev/remote-jobs/j/redirect/pqekc3hzwr ## About the Role What We're Looking For* At least 5+ years of hands-on software development experience. * Advanced proficiency in JavaScript and TypeScript, with deep experience building modern frontends in React. * Proven ability to communicate technical concepts effectively to both technical and non-technical stakeholders. * Strong problem-solving skills, with a track record of analyzing complex issues and implementing efficient solutions. * Business acumen, including project and stakeholder management expertise. ## Description * Own the design and delivery of software solutions across a modern React, Next.js, TypeScript, and JavaScript stack, writing high-quality code and setting the architectural patterns the team builds on. * Build, integrate, and own backend services, APIs, business logic, and data flows, ensuring they scale reliably. * Lead technical planning, architecture discussions, and solution design for significant features and initiatives, and influence the broader platform's technical direction. * Lead code reviews and uphold engineering standards across the team, providing feedback that raises the quality bar and helps other engineers grow. * Own application performance, reliability, accessibility, and maintainability for the systems you're responsible for, debugging and resolving complex production and development issues. * Drive automated testing practices (unit, integration, and end-to-end) and the quality assurance process so software consistently meets functional and non-functional requirements. * Work across third-party integrations, analytics, feature flagging, payment systems, CMS platforms, and cloud environments, and improve CI/CD and release management. * Mentor less-experienced engineers, partnering with QA and engineering teams to deliver high-quality solutions with seamless integration across application layers. * Create and maintain technical documentation to guide future development and ensure knowledge sharing across teams. * Stay current with emerging technologies and industry trends, and bring them to bear on the platform