Principal Frontend Engineer (ReactJS/NextJS)

JOB DESCRIPTION

We are seeking a Principal Frontend Engineer to spearhead the development and operation of "Money Forward Cloud Box," our cloud file storage solution designed to enhance back-office efficiency. In this role, you will work closely with Product Managers and Designers to build scalable systems ready for large-scale traffic, optimize both User Experience and Developer Experience, boost team productivity, and mentor junior-middle engineers. Your responsibilities will be broad and impactful. The primary focus will be on frontend development using Next.js, however, you may also contribute partially to server-side development involving Ruby on Rails. We enthusiastically welcome applications from motivated individuals passionate about creating outstanding products.

RESPONSIBILITIES

• Develop and Deliver products with high responsibility, availability, scalability, security, and maintainability.
• Work with a product manager, a designer, and backend engineers to implement product features.
• Provide technical direction and validate technical solutions to ensure quality and scalability in React & Next.js development.
• Resolve any technical issues, risks, and challenges, escalating as necessary and providing solutions.
• Contribute to create a sophisticated development team, applying Agile/Scrum methodologies to deliver projects successfully.
• Support the growth of junior to mid-level engineers through hands-on teaching and coaching, thereby maximizing the team's output.

REQUIREMENTS

Must-Have Skills:

• 6+ years of experience in web development with React, with at least 3+ years of experience in web development with Next.js.
• 3+ years of experience leading a team of 4+ engineers to successfully build, deliver, and operate projects while fostering a collaborative and high-performance culture using Agile methodologies.
• Strong understanding of JavaScript/HTML/CSS fundamentals.
• Comprehensive knowledge of web security best practices.
• Familiarity with RESTful APIs and backend integration.
• Experience with frontend testing frameworks (Jest, Mocha, etc…)
• Experience in designing system architecture.
• Experience in designing and maintaining UI components (Storybook, Visual Regression Test, etc…)
• Familiarity with CI/CD pipelines and Docker.
• Strong product mindset with a solid sense of ownership and accountability.
• Excellent verbal communication skills in English.

Nice-to-Have Skills:

• Hands-on expertise in application performance monitoring and optimization.
• Experience in designing and building backend applications, especially using Ruby on Rails
• Previous experience working in a multi-cultural environment.
• Knowledge of automation testing and end-to-end testing frameworks.

Tech Stack:

• Fronted: TypeScript, Next.js
• Backend: Ruby, Ruby on Rails, Golang
• Infrastructure: AWS, Terraform, Kubernetes, Kafka
• Repositories: GitHub
• Project management: Asana, Jira
• Monitoring: Datadog, Rollbar
• CI/CD: CircleCI, ArgoCD, GitHub Actions
• Analytics: BigQuery, Google Analytics
• Communication Tools: Zoom, Slack, Figma, Miro