Full-Time

Senior Product Security Engineer

Astranis

Astranis

501-1,000 employees

GEO satellites delivering bandwidth-as-a-service

Compensation Overview

$180k - $285k/yr

+ Equity (incentive stock options)

No H1B Sponsorship

San Francisco, CA, USA

Hybrid

Hybrid role based in San Francisco.

US Citizenship Required

Category
IT & Security (1)
Required Skills
Python
Threat modeling
Vulnerability Analysis
Cryptography
C/C++
Requirements
  • Five or more years of experience in software engineering with a focus on security.
  • Strong investigative, analytical problem-solving skills and attention to detail.
  • Experience with secure architecture design and threat modeling for complex systems including both web services and IoT/embedded devices.
  • Software development and security expertise in both high-level languages (e.g., Python) and low-level languages (e.g., C, C++).
  • Experience with security best practices for web applications (OWASP Top 10) and familiarity with embedded security concepts (e.g., secure boot, JTAG, UART).
  • Proven ability in auditing code for security flaws across different technology stacks.
  • Strong knowledge of security best practices, applied cryptography, and security frameworks.
  • Strong communication skills, with the ability to discuss security with both software and hardware engineers.
  • Ability to work collaboratively within a multi-disciplinary team environment.
Responsibilities
  • Lead threat modeling, architecture reviews, and design-level risk assessments for both application and embedded system components.
  • Conduct secure code reviews for critical modules in Python and C/C++, supporting secure coding practices across all engineering teams.
  • Evaluate cryptographic usage, authentication/authorization flows, and protocol security across the stack.
  • Identify and prioritize vulnerabilities in software and firmware; partner with developers on remediation and mitigation strategies.
  • Participate in security assessments of embedded devices, especially where software interfaces with hardware.
  • Provide security input on high-level aspects of secure boot, firmware update integrity, and device identity mechanisms.
  • Partner with software, firmware, hardware, and systems teams to implement consistent, secure solutions.

Astranis builds and operates small, low-cost satellites in geostationary orbit to provide bandwidth-as-a-service for global connectivity. Its satellites carry telecom payloads that deliver internet capacity to customers, including commercial entities and government agencies, via turnkey services that simplify procurement and reduce costs. Customers buy bandwidth and use Astranis’ satellite capacity to reach previously unserved regions, rather than building and managing their own satellites. The company differentiates itself by owning the design, manufacturing, and operation of its GEO satellites, enabling cost-efficient, turnkey connectivity solutions for markets that traditional providers overlook. The goal is to close the digital divide by bringing affordable internet access to billions of people worldwide and to build a large, sustainable market for satellite-based connectivity.

Company Size

501-1,000

Company Stage

Series E

Total Funding

$1.2B

Headquarters

San Francisco, California

Founded

2015

Simplify Jobs

Simplify's Take

What believers are saying

  • $450M funding expands MicroGEO production for 100 satellites by 2030.
  • Chunghwa Telecom partners for Taiwan's first dedicated MicroGEO satellite.
  • USSF and NASA contracts secure high-margin government revenue streams.

What critics are saying

  • Block 3 satellites delay to 2025 erodes first-mover edge versus Starlink.
  • Starlink Starshield achieves price parity by 2027, squeezing defense margins.
  • $1B backlog relies on few customers; Thaicom loss triggers 20% revenue drop.

What makes Astranis unique

  • MicroGEO satellites deliver 8.5 Gbit/s throughput, exceeding 7.5 Gbit/s specs.
  • Vanguard enables air-gapped point-to-point comms via MicroGEO for defense.
  • Omega satellites provide 50 Gbps at 600 kg mass from 2026 launches.

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Benefits

An equity stake in the company.

Comprehensive medical, dental, and vision insurance.

Unlimited vacation days.

Healthy, delicious, free lunch catered in every day.

Complementary OneMedical membership.

Great office chairs, stand-up desks, and a machine shop.

Reimbursement to spend on commuting from outside SF

Generous, fully-paid parental leave.

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-1%

2 year growth

1%
Future Digital Solutions
Apr 19th, 2025
Chunghwa and Astranis Collaborate on Developing Taiwan-Centric Satellite Solutions

Chunghwa Telecom has entered a partnership with Astranis to create a geostationary satellite specifically designed for Taiwan.

Central News Agency (CNA)
Apr 15th, 2025
Chunghwa Telecom to launch Taiwan's 1st dedicated satellite with Astranis

Taipei, April 15 (CNA) Taiwan-based telecom service provider Chunghwa Telecom Co. recently signed a strategic agreement with Astranis Space Technologies Corp., an American satellite start-up, to develop the first dedicated compact geostationary orbit (MicroGEO) satellite for Taiwan.

Castle Placement
Dec 3rd, 2024
Communications and Networking Telecom Capital Raises in the U.S. - November 16th-30th, 2024

Astranis, operator of a satellite internet company intended to bridge the digital divide, raised an additional $50 million of Series D venture funding from NTT Docomo Ventures, and other investors.

EIN News
Nov 6th, 2024
Orbits Satellite Corporation and Brightside International Corporation Sign a US$7B Agreement

As part of this ambitious effort, Orbits first partnered with Astranis, the world's leading operator of dedicated communications satellites, to construct its latest satellite.

GPS World
Nov 6th, 2024
Astranis to develop resilient GPS satellites for USSF

Astranis to develop resilient GPS satellites for USSF.