Senior Mobile & Full-Stack Developer

Sauce is a premier restaurant technology platform that helps businesses grow with our Commission-Free Delivery & Pickup structure and proprietary delivery optimization technology. We are serving a 105 billion dollar US local restaurant business. Headquartered in NYC and Tel-Aviv, Sauce wants restaurants to fulfill their highest potential, this means giving local establishments everything they need to connect directly with their customers. The Sauce team pools together decades of restaurant tech experience, along with seasoned tech, sales, marketing, product and operations executives who produce an industry-changing delivery system for successful local restaurants and chains.

We are looking for a Senior Full-Stack & Mobile Developer with strong proficiency in React Native, React.js, and Node.js to join our growing development team. In this role, you will be responsible for building, maintaining, and improving both our mobile apps and fullstack web applications. You will collaborate across cross-functional teams to deliver scalable, performant, and user-centric solutions.

• Mobile Development (React Native):
• Develop and maintain cross-platform mobile applications using React Native (iOS and Android).
• Collaborate with product managers to implement pixel-perfect UI and rich user experiences.
• Work with native modules and third-party libraries as needed.
• Optimize app performance and ensure responsiveness.
• Debug and resolve mobile-specific issues, including memory usage, animations, and crashes.
• Assist with app deployment to the App Store and Google Play.

• Frontend Development (React.js):
• Build and maintain responsive, component-based web interfaces using React.js.
• Implement clean and efficient UI components using hooks and modern React paradigms.
• Collaborate with PM to translate wireframes and mockups into functional frontend code.
• Ensure cross-browser compatibility and mobile responsiveness.
• Maintain code quality and documentation.

• Design and build RESTful APIs and microservices using Node.js (Express.js, NestJS, or similar).
• Implement business logic, authentication/authorization, and data models.
• Work with databases (SQL and/or NoSQL) to manage data storage and retrieval.
• Ensure backend systems are secure, performant, and scalable.
• Integrate third-party services and APIs where necessary.

• 7+ years of experience in software development with a focus on fullstack JavaScript/TypeScript technologies.
• Strong proficiency in React Native, React JS, and Node JS.
• Deep understanding of JavaScript (ES6+), TypeScript, and modern development tooling.
• Experience with REST APIs, GraphQL, and API design principles.
• Solid understanding of state management libraries (Redux, MobX).
• Experience with version control (Git) and CI/CD workflows.
• Knowledge of mobile app publishing for App Store and Google Play.
• Familiarity with relational and/or NoSQL databases (e.g., PostgreSQL, MongoDB).
• Good understanding of authentication methods (JWT, OAuth, etc.).
• Ability to write clean, testable, and maintainable code.
• Familiarity with Azure, AWS, or GCP.

• Experience with backend frameworks like NestJS or database ORMs like Prisma, Sequelize, or Mongoose.
• .NET Knowledge / Experience
• Mobile testing with tools like Jest.
• Experience with mobile performance profiling and optimization.
• Exposure to containerization tools like Docker.
• Familiarity with Agile/Scrum workflows and collaboration tools (Jira, Trello, etc.).

• Personal computer or laptop with up-to-date software
• High-speed internet connection
• Keyboard, mouse, working webcam, and headset with a microphone
• Primary 24” monitor (with an additional 24” monitor preferred)

• Strong & Competitive Compensation Package
• Flexible Work Environment
• 10 Paid Personal/Vacation Days
• 5 Paid Sick Days
• Monthly Wellness Stipend

Sauce is an equal opportunity workplace and an affirmative action employer. We welcome all qualified applicants regardless of race, color, ancestry, religion, sex (including pregnancy and related conditions), national origin, sexual orientation, age, marital status, disability (physical or mental), gender identity, gender expression, genetic information, veteran status, citizenship, immigration status, or any other classification, category or characteristic protected by applicable federal, state or local laws. We understand the importance of creating a more diverse and inclusive workplace and celebrate our employees for their differences.