Senior Software Engineer

Tcom, L.P. • Sioux Falls, SD

7d • Hybrid

About The Position

We build customer-facing command and control software for high-altitude balloon systems. Our users are trained operators—primarily U.S. military and internal flight operations teams—who rely on our tools to make real-world decisions. Aerostar, a business unit of TCOM, is seeking a Senior Software Engineer to help design and build production-grade single-page applications and the services that power them. This role focuses on delivering high-quality, maintainable software across the full stack. You will contribute to the design and implementation of complex web applications that integrate real-time telemetry, operational data, and mission workflows. While you will have opportunities to influence technical decisions, your primary focus will be building robust systems and contributing to a strong engineering culture. You will work across frontend and backend systems, partnering with other engineers to deliver scalable, reliable solutions and continuously improve the quality of the codebase. Relocation may be available.

Requirements

• Experienced engineer who can independently deliver complex features and systems
• Contributed to the design and implementation of production software and understand the tradeoffs behind engineering decisions
• Enjoy solving challenging technical problems and collaborating with other engineers to build better systems
• Pragmatic, detail-oriented, and focused on delivering working software that meets user needs
• Can write software without the assistance of AI but are open to using it to enhance your toolset
• Bachelor's degree in software engineering or 3+ years’ experience with master’s degree, or experience in lieu of education

Nice To Haves

• Python familiarity
• TypeScript
• Complex data visualization
• Contributing to design systems
• Working on operational or decision-support tools

Responsibilities

• Design and implement key components of complex, data-driven single-page applications
• Build backend services, APIs, and data flows that support real-time telemetry and operational workflows
• Contribute to technical design discussions for full-stack features
• Write clean, maintainable, and well-tested code across the stack
• Identify and address performance, reliability, and maintainability issues
• Participate in code reviews and provide constructive feedback to peers
• Collaborate with cross-functional teammates to deliver high-quality software

Benefits

• health and disability insurance
• 401(k) match
• flexible spending accounts/HSAs
• EAP
• tuition reimbursement
• parental leave
• paid time off (PTO)
• company-paid holidays

What This Job Offers

• Job Type: Full-time
• Career Level: Senior