Full stack Developer

We are seeking a Full Stack Developer skilled in Next.js, NestJS, Prisma, PostgreSQL, and Expo/React Native to help build a new, custom refining application from the ground up. This contractor will develop both web and mobile features, working from requirements provided by the functional team. Work will include larger monthly deliverables along with smaller weekly items., Full Stack Web Development

• Build and maintain web applications using React and Next.js.
• Develop backend services and microservices with NestJS.
• Implement data models and access layers using Prisma and PostgreSQL.
• Build reusable React components and integrate secure REST API flows.
• Optimize application performance, scalability, and reliability.

Mobile Development

• Develop cross-platform iOS/Android applications using Expo + React Native.
• Implement navigation, deep linking, push notifications, and offline capabilities.
• Ensure smooth, consistent performance across platforms.

Collaboration & Delivery

• Work with functional teams to build defined features and requirements.
• Participate in design discussions, code reviews, and sprint planning.
• Troubleshoot, debug, and document architecture, APIs, and components.

• Strong experience with React (web) and React Native (mobile).
• Hands-on experience with Next.js, NestJS, Prisma, and PostgreSQL.
• Proficiency in TypeScript across front-end and back-end.
• Experience building high-performance applications used by many users.
• Experience developing for both iOS and Android.

Nice to Have

• Experience with Docker or Podman (focus area, but not required for screening).
• Understanding of Zustand, automated testing tools (Jest, RTL), or CI/CD pipelines.
• Background developing applications for refinery or industrial operations.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.