Senior Backend Engineer

Join a Y Combinator-backed, AI-powered food tech startup on a mission to revolutionize how the world eats. We’re looking for 1-2 senior backend engineers who will report directly to the CEO/Head of Product and scale Jupiter from 700 creators to 10k+ and a $20M run rate within the next 2 years.

Your work will have a direct impact on product and business growth in a high-autonomy, high-trust environment. Some areas where we are currently experimenting: Generative Engine Optimization, SEO, content generation from recipe videos and automatic social posting.

• Work directly with the CEO and Head of Product to scale Jupiter’s marketplace

• Own key backend systems end-to-end, from design to deployment

• Deploy and monitor backend services in cloud environments (GCP) using Docker, Kubernetes, and Terraform

• Take product requirements (we use Linear) and turn them into technical solutions

• Design and implement backend services using Kotlin, Micronaut, and Spring frameworks

• Create RESTful APIs to expose backend services to frontend applications and third-party integrations

• Design and optimize relational (PostgreSQL) and NoSQL (Elasticsearch) databases

• Implement background jobs and event-driven architectures using RabbitMQ

• Write and maintain unit, integration, and end-to-end tests

• 4+ years of backend development experience, focusing on JVM languages (Kotlin preferred but Java works too if you’re willing to switch to Kotlin)

• Are proficient in backend frameworks like Micronaut or Spring

• Have experience with relational (PostgreSQL) and NoSQL (Elasticsearch) databases

• Possess a solid understanding of object-oriented, functional, and reactive programming paradigms

• Are experienced with cloud platforms (GCP) and containerization (Docker, Kubernetes)

• Have strong knowledge of RESTful API design and development

• Understand event/queue patterns (RabbitMQ, Kafka, or similar)

• Excel at problem-solving and debugging

• Communicate and collaborate effectively

• Languages & Frameworks: Kotlin, Micronaut, Spring

• Databases: PostgreSQL, Elasticsearch

• Messaging: RabbitMQ

• Cloud & DevOps: GCP, Docker, Kubernetes

• Experiment-driven culture: We measure success by the number of successful experiments run per month.

• Metrics-driven: We study metrics deeply to deliver a great experience.

• Speed: Moving fast is our competitive advantage in the age of AI.

• High autonomy: We trust everyone on the team to make high-stakes decisions.

• Video-off culture: Most meetings are video-off to conserve energy, except for critical meetings and weekly team syncs.

• Customer obsession: We constantly seek beautiful ideas by studying our customers.

• Outcomes over hours: We care more about results than time spent. You control your schedule.

• Base Salary: $100k–$140k (depending on location, experience, and internal parity)

• Equity: 0.2%–0.5% options

• Remote-first: Work from anywhere. However, we expect 4 hours overlap with morning EST (9am- 1pm)

• Flexible hours, async work culture, minimal meetings

• Competitive benefits package

Jupiter is an equal opportunity employer, committed to providing a workplace free from discrimination. We value diverse backgrounds and perspectives and do not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, veteran status, or any other protected status under applicable laws. We provide reasonable accommodations for qualified individuals with disabilities.