Senior Backend Engineer, Horizon (Kotlin & Node.js)

About The Team:

As a fundamental pillar of the platform, Horizon enables different business models within CookUnity, ensuring that users can seamlessly subscribe to plans, manage their preferences, and successfully place their orders.

The team is responsible for two key areas:

1. Enabling Business Models and Subscriptions: Horizon ensures that diverse user segments have access to tailored plans and subscription models, optimizing their experience within the platform. This involves continuous iteration and experimentation to provide the best possible journey for each type of user.
2. Order Management and Integrity: Horizon acts as the source of truth for user orders, ensuring their accuracy and reliability. The team handles critical processes such as order creation, autopilot selection, and delivery eligibility based on user addresses, guaranteeing a seamless experience from selection to fulfillment.

By combining a strong user experience focus with backend robustness, Horizon plays a vital role in shaping the way users interact with CookUnity and ensuring operational stability across the platform.

The Role:

We are looking for a Backend Engineer to join the Horizon Team, where you will play a key role in building and optimizing backend services and APIs that power CookUnity’s experience. This role involves working on our Backend-for-Frontend (BFF) architecture, as well as developing and maintaining backend services and databases.

As part of a cross-functional team, you will collaborate closely with product managers, mobile/web engineers, and designers to create an engaging subscription experience.

This is our current stack:

• Languages: JavaScript and Kotlin
• Frameworks: ReactJS, Redux, NodeJS, Express, GraphQL.
• Databases: MySQL & PostgreSQL.
• Infrastructure: AWS Based: Kubernetes, S3, CloudFront and RDS.
• Agile Methodology

Please note that only candidates based in Latin America will be considered for this role.

Responsibilities:

• Develop and maintain scalable backend services and API across mobile and web.
• Implement and optimize the BFF (Backend-for-Frontend) layer, ensuring efficient data handling and low-latency API responses.
• Collaborate with frontend, mobile, and product teams to design and implement new subscription-related features.
• Optimize database queries and caching strategies for high-performance API responses.
• Improve monitoring, observability, and logging for backend services.
• Participate in code reviews and engineering discussions, contributing to technical best practices.

Minimum Requirements:

• 5+ years of experience in backend development, with expertise in Kotlin, Node.js and TypeScript.
• Strong understanding of RESTful APIs, GraphQL, and backend-for-frontend (BFF).
• Experience working with SQL databases (PostgreSQL or MySQL) and optimizing queries.
• Familiarity with service-oriented architecture and microservices.
• Strong debugging and troubleshooting skills for backend services and APIs.
• Solid understanding of performance optimization, caching, and API response efficiency.
• Advanced English communication skills, with the ability to collaborate across teams.

Preferred Requirements:

• Knowledge of AWS, Kubernetes, Terraform, and cloud infrastructure.
• Familiarity with observability tools like DataDog and logging frameworks.
• Understanding of GraphQL APIs and schema design best practices.

Benefits:

💸 Get paid in USD. 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.

🩺 Healthcare Benefit: Monthly stipend to use in your preferred healthcare provider.

🎄 16 fully paid Argentinean holidays.

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

🐣 Family leave of 12 weeks for primary caregiver and 6 weeks for secondary caregiver, fully paid.

🧑‍🏫 Personalized English coach.

🧘🏻‍♀️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.

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