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Sr. Application Security Engineer

Join SpaceX as a Sr. Application Security Engineer to enhance the security of Starlink's internet infrastructure for millions of users.

Location
Redmond, WA
Compensation
$170k–$235k/yr
Level
senior
Type
full time

Posted by employer 3 months ago

First seen on Joblaze 3 months ago

Last verified on the company career page 1 day ago

Requirements

Experience
5–7 years
Education
Bachelor's degree
Visa
Sponsorship available

Not disclosed in this posting: work arrangement.

Benefits

401k Match Paid Vacation Disability Insurance Equity/Stock Options Paid Holidays Health Insurance Parental Leave Life Insurance

Joblaze summary

In the role of Sr. Application Security Engineer at SpaceX, the individual will focus on enhancing the security of Starlink's web and mobile applications, ensuring customer data protection while collaborating closely with development teams. Key skills include experience in application security, penetration testing, and proficiency in programming languages like Python and Golang. This position is ideal for seasoned professionals with a strong background in security software development who thrive in dynamic environments. SpaceX's mission-driven culture emphasizes innovation and collaboration, making it a unique workplace for those passionate about technology and security.

Joblaze insights

  • Listed about 3 months ago — first seen on Joblaze July 10, 2026. Last confirmed on SpaceX's careers page October 27, 2026.
  • Salary band is in line with the typical range for Security roles (median ~$170,000).
  • Starts above 35% of 102 comparable senior security roles in United States that list Python we track (median $180,000 across 48 companies). See Python salary trends
  • Python appears in 40.6% of 340 comparable senior security roles in United States; C# appears in 0.6% of 340 comparable senior security roles in United States.

Quick facts

What's the salary range?
SpaceX lists $170,000–$235,000 for this role.
How much experience is required?
5–7 years of relevant experience for this Sr. Application Security Engineer role.
What's the tech stack?
Joblaze extracted these technologies from the posting: Application Security, C#, C++, Golang, Mobile Application, Python.
Does SpaceX sponsor work visas for this role?
Yes — the posting indicates visa sponsorship is available for the right candidate.
What seniority level is this role?
SpaceX targets senior candidates for this position.
Is this full-time or contract?
Full-time for this Sr. Application Security Engineer role at SpaceX.

From the original posting

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars.

SR. APPLICATION SECURITY ENGINEER

At SpaceX we’re leveraging our experience in building rockets and spacecraft to deploy Starlink, the world’s most advanced broadband internet system. Starlink is the world’s largest satellite constellation and is providing fast, reliable internet to millions of users worldwide. We design, build, test, and operate all parts of the system – thousands of satellites, consumer antennae that allow users to connect within minutes of unboxing, and the software that brings it all together. We’ve only begun to scratch the surface of Starlink’s potential global impact and are looking for best-in-class engineers to help maximize Starlink’s utility for communities and businesses around the globe.

As a Security Software Engineer, you will influence the security of Starlink.com and associated internet infrastructure which our millions of customers use every day to manage their Starlink account and equipment. In this role, you will continually assess Starlink Internet infrastructure and applications for security issues, provide detailed early-stage design feedback to developers, and ensure we're protecting customer data. This role will focus on identifying new security issues, driving long-term improvement, and providing continuous guidance to developers as the Starlink system grows. You will also be responsible for monitoring and responding to bug bounty submissions.

Ideally, you have notable skills in one or more of the following:

  • Web and mobile application penetration testing
  • Web and mobile application software development
  • Defending production infrastructure

Being flexible, communicating clearly, and establishing and maintaining productive working relationships with other engineering teams are paramount to success. If you are passionate about building quality products, love the challenges of outsmarting adversaries, and want to make an impact on an inter-planetary scale, then you will fit right in.

RESPONSIBILITIES:

  • Design and build security infrastructure for Starlink.com and the Starlink mobile application
  • Continually audit and assess Starlink Internet infrastructure for security issues
  • Design security into software processes and provide developer guidance for building secure applications
  • Monitor bug bounty submissions and coordinate response to legitimate submissions
  • Build prototypes and help identify, design, and test security improvements
  • Further our mission of providing secure and reliable Internet to underserved communities

BASIC QUALIFICATIONS:

  • Bachelor's degree in computer science or another STEM discipline and 5+ years of professional experience in security software development; OR 7+ years of professional experience in security software development in lieu of a degree
  • Experience with one or more software development languages (i.e. Python, C++, Golang, C#)
  • Experience designing and implementing application security solutions for web and or mobile applications

PREFERRED SKILLS AND EXPERIENCE:

  • Experience contributing security improvements to complex systems
  • Track record of identifying high-impact vulnerabilities in real-world applications
  • Fundamental understanding of networking and network protocols
  • Flexibility, communicating clearly, and establishing and maintaining productive working relationships with other engineering teams
  • Excellent communication skills, both written and verbal
  • Ability to work both independently and in a team
  • Demonstrated ability to deal with ambiguity and to learn new technologies quickly
  • Advanced degree in a technical or engineering discipline

ADDITIONAL REQUIREMENTS:

  • Must be willing to work extended hours and weekends as needed

COMPENSATION AND BENEFITS:

Pay Range:
Level 3: $170,000.00 - $235,000.00

Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.

Base salary is just one part of your total rewards package at SpaceX. You may also be eligible for long-term incentives, in the form of company stock or long-term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. You will also receive access to comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short and long-term disability insurance, life insurance, paid parental leave, and various other discounts and perks. You may also accrue 3 weeks of paid vacation and will be eligible for 10 or more paid holidays per year. Employees in Washington State accrue paid sick time in compliance with state and federal law. Company shuttles are offered to employees for roundtrip travel from select Seattle locations to the SpaceX Redmond office Monday to Friday.

ITAR REQUIREMENTS:

Standard company text repeated across SpaceX's postings is omitted here.

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