Software Engineer - Backend

Astranis builds advanced satellites for high orbits, expanding humanity’s reach into the solar system. Today, Astranis satellites provide dedicated, secure networks to highly-sophisticated customers across the globe— large enterprises, sovereign governments, and the US military. With five satellites on orbit and many more set to launch soon, the company is servicing a backlog of more than $1 billion of commercial contracts.
Astranis is the preferred satellite communications partner for buyers with stringent requirements for uptime, data security, network visibility, and customization. Astranis has raised over $750 million from some of the world’s best investors, from Andreessen Horowitz to Blackrock and Fidelity, and employs a team of 450 engineers and entrepreneurs. Astranis designs, builds, and operates its satellites out of its 153,000 sq. ft. headquarters in Northern California, USA.

As a Backend Engineer on the Ground Networks team, you will design and implement reliable, scalable systems that process data from deployed hardware and facilitate commanding our ground stations. You’ll collaborate closely with full stack engineers, embedded engineers, and mission operators to deliver end-to-end solutions that directly support satellite launches, fleet operations, and customer services. This is a chance to own critical backend components while contributing to software that helps millions of people gain affordable internet access.

This role will contribute to both our commercial and US government programs.

• Design, build, and maintain backend services and APIs that enable satellite operations, ground infrastructure, and customer-facing systems
• Collaborate with application developers to deliver features that combine frontend and backend functionality
• Ensure systems meet high standards of reliability, availability, and performance for mission-critical operations
• Contribute to technical design and architecture decisions that support team scalability and robustness
• Write clean, testable code and participate in code reviews
• Support monitoring, debugging, and optimization of production systems running in the cloud
• Triage and root cause issues with field-deployed software and hardware

• 3+ years of backend software development experience
• Proficiency in Python, C++, Go, or similar backend languages
• Experience building distributed systems and service-oriented architectures
• Strong understanding of concurrency, reliability, and scalability challenges
• Ability to thrive in a fast-paced, collaborative environment

• Experience working with frontend technologies (React, TypeScript, etc.) and interest in full-stack collaboration
• Background in real-time systems, telemetry, or networking protocols
• Prior experience in aerospace, telecommunications, or other mission-critical industries
• Contributions to open-source projects or personal projects demonstrating backend systems expertise