About Appex Group:

Appex Group Inc. is a leading operator and investor in a diverse portfolio of high-performing mobile applications. We specialize in scaling mobile-first products and experiences, and we’re growing fast. We're looking for sharp, curious, and driven people who want to build technology that reaches millions.

Position Overview:

We're seeking a Full-Stack Developer with strong experience in Node.js & React to help build and maintain the APIs that power our mobile apps, as well as the corresponding web properties that complement them. You’ll play a key role in building backend services and developing polished, high-converting landing pages and web experiences tied to our app portfolio.

Responsibilities:

• Design, develop, and maintain backend APIs using Node.js that interface with our mobile apps
• Build and maintain web front-ends using React for companion sites, landing pages, and internal tools
• Develop and optimize landing pages for acquisition campaigns and web-based funnels
• Collaborate cross-functionally with mobile developers, designers, and product managers to deliver seamless end-to-end user experiences
• Write clean, scalable, and well-documented code
• Ensure responsiveness, scalability, and performance of web applications and services
• Implement monitoring, logging, and debugging tools to maintain production systems
• Participate in code reviews and technical discussions to improve code quality and share knowledge

Requirements:

• 5+ years of experience in full-stack development
• Strong proficiency in Node.js and building RESTful APIs
• Solid experience with React.js and modern front-end development practices
• Proven experience building and optimizing landing pages
• Familiarity with database technologies such as MongoDB, PostgreSQL, or MySQL
• Experience working with authentication, authorization, and user management flows
• Understanding of mobile/web interoperability and API design best practices
• Comfortable working in an agile, fast-paced startup environment
• Strong problem-solving skills and attention to detail

Extreme Pluses:

• Experience with other full-stack tools and frameworks (e.g. Next.js, TypeScript, Tailwind CSS, Express, GraphQL, Prisma, etc.)
• Exposure to conversion optimization and A/B testing for landing pages
• Familiarity with mobile development (iOS/Android) or working alongside mobile teams
• Knowledge of DevOps tools and cloud infrastructure (AWS, Vercel, Docker, etc.)

Why Appex?

• Work on impactful products used by millions of users
• Remote-first culture with flexible work arrangements
• Collaborative, tight-knit team of builders and entrepreneurs
• Great benefits