Spaceflight Software Systems Engineer - MBSE & Integration

axiomspace; Houston (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

Axiom Space in Houston seeks a resilient Software Systems Engineer to own software systems for the Commercial Space Station program. You will define, integrate, and verify software across the lifecycle in a MBSE-driven environment, coordinating with multi-disciplinary teams in a fast-paced setting.

Responsibilities include requirements management, interfaces, verification planning, and end-to-end system integration. A strong track record in MBSE and aerospace experience is highly valued.

Qualifications

• Demonstrated experience authoring and managing software/system requirements (functional, performance, safety, and interface).
• Experience maintaining bidirectional requirements traceability across lifecycle stages.
• Experience defining and managing interfaces (ICDs) and supporting integration activities.
• Experience planning and executing verification activities (test, analysis, inspection, demonstration).
• Proficiency with at least one requirements management tool (e.g., Jama, DOORS, or Innoslate).
• Hands-on MBSE experience using SysML in at least one MBSE tool (e.g., Cameo, Rhapsody, Innoslate).
• Working knowledge of JIRA/Confluence and project/risk management practices.

Responsibilities

• Author software and system requirements using a model-based requirements approach.
• Maintain bidirectional requirements traceability across the full lifecycle.
• Lead requirements reviews, change control boards, and impact assessments.
• Define interfaces (ICDs), message schemas, timing budgets, and failure behaviors.
• Participate in software architecture trades: partitioning, redundancy, data flows, modes/states.
• Collaborate with avionics, network, FPGA, and hardware teams for end-to-end integration.
• Plan and author verification methods and define testable acceptance criteria.
• Support integration activities across SIL/HIL environments and labs.
• Support safety analyses and derived requirements, including hazard analysis and fault response.
• Communicate project progress and issues to stakeholders and leadership.
• Implement and maintain agile project management methodologies.
• Perform additional duties as assigned.

Skills

Software requirements

Traceability

Interfaces and architecture

MBSE (SysML)

JIRA/Confluence

Problem solving in fast-moving env

Education

Bachelor's degree in Aerospace, Electrical, Systems, CS or related field

Tools

Jama

DOORS

Innoslate

SysML tools (Cameo, Rhapsody)

Job description

Axiom Space in Houston seeks a resilient Software Systems Engineer to own software systems for the Commercial Space Station program. You will define, integrate, and verify software across the lifecycle in a MBSE-driven environment, coordinating with multi-disciplinary teams in a fast-paced setting.

Responsibilities include requirements management, interfaces, verification planning, and end-to-end system integration. A strong track record in MBSE and aerospace experience is highly valued.