Senior Full Stack Engineer, Supply Tech

About Cobalt Streamworks : Food has lost its soul to modern convenience. And with it, it has lost the power to nourish, inspire, and connect us. So in 2018, Cobalt Streamworks was founded as the first-of-its-kind platform that connects the world with the source of truly great food: chefs. Today, Cobalt Streamworks delivers 50 million meals a year from the industry’s best chefs to homes all over the country. Fresh. Ready-to-eat. And crafted with the passion that nourishes body and soul. Unwilling to stop there, Cobalt Streamworks is expanding beyond delivery to become an ever-innovating marketplace focused on our singular mission: empower Chefs to nourish the world. If that mission has you hungry in more ways than one, you’ve found the right job posting. About the Team: The Supply Tech Team is at the heart of Cobalt Streamworks ’s culinary innovation. Our team builds and maintains the systems that our operational teams, including chefs, rely on to create, manage, and scale their recipes seamlessly. RMS is a core part of Cobalt Streamworks ’s ChefOS Zone , supporting the entire meal lifecycle—from ideation to production—ensuring accuracy in ingredient sourcing, nutritional data, and compliance with dietary preferences. We work closely with chefs, supply chain teams, and operations to integrate RMS with inventory management, order processing, and fulfillment. Our mission is to empower chefs with intuitive tools while ensuring efficiency and reliability in meal production at scale. The Role: We are looking for a Senior Full Stack Engineer with Backend-oriented focus to join our Supply Tech team. In this role, you will design, build, and maintain highly scalable backend and frontend services that power Cobalt Streamworks ’s core recipe management functionalities. You will work alongside other talented engineers, product managers, and designers to develop robust and efficient backend systems using Kotlin and React , leveraging frameworks like Micronaut or Spring Boot and integrating Temporal for workflow automation. This is an individual contributor (IC) role with a strong focus on backend architecture, performance, and scalability. If you enjoy solving complex problems, optimizing workflows, and working on mission-critical systems, this role is for you! Responsibilities: Design, develop, and maintain backend services for the Recipe Management System using Kotlin and Java. Contribute to front-end development in React, next.js and related technologies. Contribute in overall architecture solution by providing good practices within a micro-services oriented architecture. Implement workflow automation and orchestration using Temporal. Optimize database interactions and performance (PostgreSQL, MySQL). Collaborate with frontend engineers, product managers, and designers to build seamless user experiences. Ensure system reliability and uptime by implementing best practices in observability, logging, and monitoring. Perform code reviews, contribute to best practices, and mentor junior engineers. Work closely with DevOps to optimize CI/CD pipelines and infrastructure deployment. Stay up-to-date with emerging technologies and drive innovation within the team. Help to have higher levels of uptime & supporting the on-call rotation will help the business run 24/7. Minimum Requirements: 4+ years of backend development experience with Kotlin and/or Java. Experience working with Micronaut or Spring Boot frameworks. Strong understanding of microservices architectures and distributed systems. 2+ years of frontend development in React.js tech stack. Proficiency in SQL databases like PostgreSQL or MySQL. Experience building high-performance, scalable backend systems. Strong problem-solving skills and a passion for clean, maintainable code. Solid understanding of RESTful API design and best practices. Familiarity with cloud services (AWS, GCP, or Azure). Strong English communication skills and ability to work in a fast-paced environment. Preferred Requirements: Experience with message queues (SQS, Kafka, RabbitMQ, etc.). Exposure to GraphQL and event-driven architectures. Experience in DevOps practices, containerization (Docker, Kubernetes), and infrastructure as code (Terraform). Background in food tech, e-commerce, or marketplace platforms. Learn More About Cobalt Streamworks We believe great leadership starts with alignment on vision, values, and ways of working. To give you deeper insight into who we are and what we’re looking for, we invite you to explore: Cobalt Streamworks 's Leadership Principles – The values and behaviors that guide how we operate, collaborate, and scale. We hope this provides valuable insight into our culture and product vision. If this excites you, we’d love to connect! Benefits: 💸 Get paid in USD. 🗺 Work remotely: design the life that you want. ⛱ Enjoy 15 days of vacation each year from the start date. 🎄 16 fully paid Argentinean holidays. 🩺 Healthcare Benefit: Monthly stipend to use in your preferred healthcare provider. 🗓️ 5- year Sabbatical: After 5 years with Cobalt Streamworks , you