Backend Engineer

• Experience with TypeScript.
• Familiarity with backend testing frameworks (Jest, Mocha).
• Knowledge of cloud platforms (AWS, DigitalOcean, GCP) and containerization (Docker, Kubernetes).
• Experience with CI/CD pipelines and DevOps practices.
• Experience with search and indexing systems (Elasticsearch, OpenSearch).
• Experience with data pipelines or large-scale data processing.
• An interest in sustainability, food systems, or health tech.

GreenChoice, PBC is the leading public benefit food health intelligence company. GreenChoice gives 40+ food retail and technology partners instant access to personalized nutritional guidance, evidence-based food health scores, and verified health attribute data on over 1 million food products, with award-winning integrations to meet consumers' changing health needs and provide medically tailored food-as-medicine benefits. GreenChoice has already guided over 10 million healthier purchases. Google named GreenChoice one of the three "Best Apps for Good" in the U.S. 

GreenChoice is backed by Katapult and BonBillo Ventures, partners with Stanford University School of Medicine, and members of the Tufts Friedman School Food & Nutrition Innovation Council. GreenChoice is guided by a Science Advisory Board of leading PhDs, dietitians, and researchers in public health, nutrition science, environmental science, and behavior change.

As a Backend Engineer at GreenChoice, you will design and maintain the APIs, services, and data systems that power our food intelligence platform. You will work primarily in Node.js, building REST and GraphQL APIs and modeling data across relational and NoSQL databases that hold information on more than a million food products.

You will work closely with product, data, and front end teams to deliver services that are reliable, performant, and secure at scale. This role is for someone who enjoys data modeling, API design, and the systems work behind a product, and who wants to own backend features from design through production.

• Design, implement, and maintain RESTful and GraphQL APIs using Node.js and Express.
• Model, query, and optimize data across relational and NoSQL databases (MySQL, PostgreSQL, MongoDB, Redis).
• Ensure data integrity, performance, and scalability across services.
• Build and maintain services and data flows that support the product's scoring and personalization features.

• Work with front end engineers to define clear API contracts and ensure smooth data flow into applications.
• Collaborate with the data team on pipelines, storage, and query performance.
• Participate in code reviews, technical design discussions, and architectural decisions.

• Write unit and integration tests to keep services stable.
• Keep code clean, well-documented, and reusable.
• Debug, optimize, and monitor service performance, reliability, and security.

• 3 to 5 years of backend development experience.
• Strong proficiency in:
  • Node.js (Express or similar frameworks)
  • REST and GraphQL API design
  • SQL databases (MySQL or PostgreSQL)
  • NoSQL databases (MongoDB or Redis)
• Solid understanding of data modeling, query optimization, and indexing.
• Experience designing APIs that front end and mobile clients consume.
• Awareness of API security, authentication, and data protection practices.
• Proficiency with Git and collaborative tools (Asana, Slack, code versioning workflows).
• Able to work independently in a startup environment and own features end to end.