Senior Full Stack Engineer, B2B – Partnerships, Integrations

This is a fully remote position, open to applicants in Argentina.

📋 Description

• Assist in integrating CookUnity with various third-party platforms (such as marketplaces, loyalty programs, travel partners, and payment/benefits providers) by designing and implementing robust, scalable, and reusable integration patterns.

• Contribute to shaping the future of B2B expansion and product distribution by collaborating directly with the Head of B2B and cross-functional stakeholders.

• Gain a deep understanding of a complex, operationally intensive business, and streamline/automate partner workflows through technology.

• Manage projects across a full-stack environment, addressing challenges on the front-end, back-end, and mobile experience—often involving external partner systems, APIs, and technical constraints.

• Engage in hands-on development to create a world-class partner-enabled customer experience, delivering solutions that can be scaled quickly and safely.

• Maintain and scale our AWS infrastructure to support integrations, ensuring reliability, observability, and secure data exchange with partners.

⛳️ Requirements

• Proven experience in designing and building cloud architecture, backends, middle ends, and web applications—taking ownership of end-to-end delivery.

• Proficiency in NodeJS, NestJS, AWS, and React.

• Experience with integrations, including consuming and designing REST APIs, handling authentication (such as OAuth/API keys), working with webhooks/events, and building resilient workflows.

• Familiarity with relational databases, including MySQL or PostgreSQL.

• Experience with automated testing and continuous integration and deployment processes.

• Knowledge of how to design, implement, and maintain backend services for use by both internal teams and external partners.

• Advanced proficiency in English (both written and spoken), with the ability to collaborate comfortably with international stakeholders and partner engineering teams.

• Fluency with AI engineering tools.

🏝️ Benefits

• 💸 Get paid in USD

• 🗺 Work remotely: design the life that you want

• ⛱ Enjoy 15 days of vacation each year starting from your date of hire

• 🎄 16 fully paid Argentinean holidays

• 🩺 Healthcare Benefit: Monthly stipend to use with your preferred healthcare provider

• 🗓️ 5-year Sabbatical: After 5 years with CookUnity, you receive a 4-week paid sabbatical

• 🐣 Paid Family Leave

• 🕯 Compassionate Leave: 3-5 days provided each time the need arises

• 🧘🏽‍♀️ Flexible benefits tailored to you: a prepaid card usable for wellness, learning, food, and more.

• 🤖 AI-forward workplace: enterprise access to ChatGPT and Claude to enhance your efficiency and growth.

• 🧑‍🏫 Personalized English coaching.