# Senior Software Engineer, Command & Control

**Company:** [Quindar](https://hotfix.jobs/companies/quindar)
**Location:** Denver, CO
**Role:** Backend Engineering
**Experience:** 5+ years
**Skills:** Python, Rust, Ccsds, Csp, Cfdp, Xtce, Mib, Kubernetes, DevSecOps, Aes-256 Gcm, Relational Databases, Time-Series Databases, Git, GitHub, Distributed Systems
**Posted:** 2026-08-17

> Develop backend command-and-control software that enables reliable communication between Quindar’s platform and diverse satellite vehicles. The role requires 3+ years of complex systems or hardware-software integration experience, strong protocol and systems skills, and a bachelor’s degree or equivalent practical experience.

## Job Description

## Responsibilities
- Develop backend Command & Control (C2) software connecting the platform to satellite vehicles.
- Build reliable machine-to-machine communication and systems integrations for heterogeneous spacecraft.
- Work with binary protocols, command and telemetry definitions, data transport, serialization and encoding, stateful communication, hardware interfaces, and remote-system operations.
- Collaborate with a multidisciplinary team to onboard satellite vehicles by translating spacecraft-specific interfaces and protocols into maintainable platform integrations.
- Develop abstractions, tooling, and architecture to support many spacecraft without creating every integration from scratch.
- Design C2 systems that scale across vehicles, protocols, and missions.
- Take ownership of technically ambiguous integration problems through completion.
- Maintain high standards for software quality, resilience, observability, and performance.
- Communicate complex technical information to internal and customer-facing audiences.

## Requirements
- Bachelor’s degree in Computer Science, Electrical Engineering, Computer Engineering, or a related technical field, or equivalent practical experience.
- 3+ years of professional experience developing software for satellite command and control, telecommunications, networking, robotics, embedded systems, industrial automation, IoT, defense systems, or similarly complex machine-to-machine or hardware-software systems.
- Proficiency in backend or systems programming languages such as Python and Rust.
- Experience building software that communicates with, controls, or processes data from remote machines, embedded systems, hardware assets, or other complex systems.
- Experience implementing or integrating machine-to-machine communication protocols, including binary serialization, framing, packetization, transport, message routing, sequencing, acknowledgements, error handling, and state management.
- Experience with real-time or embedded software, distributed systems, networking, telecommunications, robotics, IoT, industrial systems, or hardware/software integration.
- Demonstrated experience taking a protocol, interface specification, or hardware integration from documentation through implementation, testing, troubleshooting, and production operation.
- Strong technical analysis, systems thinking, troubleshooting, adaptability, cross-functional communication, and ownership skills.

## Nice-to-haves
- Satellite communication standards such as CCSDS, CSP, CFDP, and IP.
- Structured command, telemetry, or interface definitions such as XTCE and MIB.
- Encryption algorithms including AES-256 GCM, AES-256 CFB, AES-256 ECB, NSA Type 1 PEGASUS, and NSA Type 1 CARIBOU.
- Kubernetes platforms and DevSecOps practices.
- Relational or time-series databases.
- Git and GitHub or similar version-control workflows.
- Open-source software experience.
- Aerospace experience; experience in adjacent industries is also relevant.

## Compensation and Benefits
- Hybrid schedule with two days per week in the Arvada, CO, Washington, D.C., or Seattle, WA office and significant remote work.

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