Staff Full Stack Engineer

Summary

Join CookUnity's Fraîche team as a Staff Full Stack Engineer and lead the development of features across mobile apps, internal tools, APIs, and services. Guide tech decisions, define best practices, and architect solutions supporting rapid growth and physical infrastructure. Lead and mentor a growing team of engineers, defining team rituals and code quality standards. Work on backend services communicating with connected fridges in real-time, ensuring uptime and scalability. Collaborate with Product, Design, and Operations to deliver improvements and streamline operations. Balance hands-on coding with long-term technical strategy and integration with the broader CookUnity B2B platform. Coordinate with CookUnity’s central B2B team to align on architecture and platform migration strategy. This role requires a blend of product thinking, hands-on coding, and leadership.

Requirements

• 7+ years of software development experience in full-stack or backend roles, building and shipping production applications
• Front-End Expertise: Hands-on experience creating rich user interfaces in modern web or mobile frameworks . Exposure to cross-platform development is key – if you’ve worked with Flutter that’s a big plus (if not, experience with frameworks like React Native or modern web SPA frameworks and a willingness to learn Flutter is great)
• Backend Proficiency: Deep knowledge of building scalable backend APIs and services using Node.js (TypeScript) and/or PHP . You’ve designed RESTful (or GraphQL) APIs, worked with frameworks like NestJS, Express, Symfony, or Laravel , and are comfortable with both object-oriented and modern TypeScript back-end paradigms. (Our current backend is Symfony/PHP, and comfort with PHP is important while we gradually introduce more Node.js.)
• Cloud & Data: Strong experience with cloud platforms and databases. You’ve deployed or managed applications on Google Cloud and/or AWS , and you understand both SQL and NoSQL databases . (Experience with Firestore or real-time databases is a big plus.)
• DevOps & CI/CD: A DevOps mindset with experience in continuous integration and delivery. You’ve set up or worked with CI/CD pipelines (we use GitHub Actions) to automate testing and deployments. You are comfortable with containerization (Docker) and general cloud infrastructure management for a smooth development workflow
• Technical Leadership: Proven ability to lead a team or project . You can make architectural decisions, guide junior engineers through code reviews, and uphold best practices. You take ownership of delivering quality software and can coordinate work across front-end and back-end to meet product goals
• Communication & Collaboration: Excellent communication skills and experience working in collaborative, asynchronous team environments . You can work closely with product managers, designers, and other stakeholders, articulating technical concepts in a clear way. (We’re a distributed team that values proactive communication)
• Product & Startup Mindset: You care about the why behind the code. You’re passionate about building user-centric products – in our case, redefining how people access fresh meals through technology. You thrive in a fast-paced startup setting: iterating quickly, wearing multiple hats when needed, and always focusing on delivering value to users
• Hardware/IOT Enthusiasm: A genuine excitement for hardware-aware development . Our product isn’t just an app, it’s a physical smart fridge network – you should be eager to dive into the challenges of building software that interfaces with IoT devices , sensors, and real-world operations. (You don’t need to be an electrical engineer, but you enjoy the idea of working with connected devices and learning the basics of how they operate.)

Responsibilities

• Own the Full Stack: Lead the development of features across mobile apps, internal tools (PWAs), APIs, and services — ensuring end-to-end quality and performance
• Guide Tech Decisions: Define and implement best practices across the stack. Architect solutions that support our rapid growth and physical infrastructure (smart fridges, inventory systems, customer flows)
• Lead & Mentor: Support a growing team of engineers, starting with our Front-End & Back-End Engineers. Help define team rituals, code quality standards, and onboarding practices
• Connect with IoT: Work on backend services that communicate with our fleet of connected fridges in real-time. Ensure uptime, automation, and traceability at scale
• Drive Product Delivery: Collaborate with Product, Design, and Operations to scope, prioritize, and ship improvements that delight users and streamline operations
• Balance Execution & Vision: Be hands-on with code while contributing to long-term technical strategy and integration with the broader CookUnity B2B platform
• Collaborate Cross-Team: Coordinate with CookUnity’s central B2B team (React, Node, NestJS) to align on architecture, shared services, and platform migration strategy

Preferred Qualifications

• Flutter & Dart: If you already have experience with Flutter for mobile/web development, that’s a strong bonus . You’ll be able to hit the ground running on our cross-platform apps
• Symfony/PHP: While Node.js can be our future, hands-on experience with PHP (Symfony) is a plus for understanding and working with our existing codebase in the interim
• IoT & MQTT: Prior experience building software for IoT or hardware devices . For example, familiarity with MQTT or other messaging protocols (like RabbitMQ, Kafka) used in real-time device communication. This would help you deeply understand our fridge connectivity out of the gate
• Platform.sh or Similar PaaS: Knowledge of Platform.sh or similar cloud PaaS hosting environments. We use Platform.sh currently for our PHP app deployment – experience here means you can navigate our ops setup more easily (but if not, you’ll learn on the job)
• Startup/Small Team Experience: You’ve previously thrived in a startup or small agile team setting. You know how to balance rapid development with maintainable code, and you can adapt as priorities evolve
• Domain Interest: A passion for food tech, marketplaces, or logistics is certainly nice to have. Loving what we do at CookUnity/Fraîche – empowering people to access fresh chef-made meals through technology – will make your role even more rewarding

Benefits

• Get paid in USD, Crypto, Euro, ARS. Whatever your choice! We use Deel to make things easier for you!
• Work remotely: design the life that you want
• Enjoy 15 business 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 CookUnity, you get a 4-week paid sabbatical
• Paid family leave
• Compassionate Leave: 3-5 days each time the need arises
• Customize the benefits that suit your needs! Access a range of perks tailored to you, including learning opportunities, wellness memberships, delivery apps, and more through our comprehensive benefit platform
• Personalized English coach