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L4 Software Engineer Jobs in Seattle, WA (NOW HIRING)

Senior Staff Rust Developer

Bellevue, WA · On-site

$180K - $225K/yr

This is a hybrid role based in San Jose, CA reporting to the Sr. Director, Software Engineering ... Hands-on experience with gRPC, Protobufs, and L2-L4 networking protocols including TCP/IP, QUIC, or ...

Built on Lucids proprietary technology and software-defined vehicle architecture, our award-winning ... We achieve this through deep vertical integration, with design, engineering, and production ...

Built on Lucid's proprietary technology and software-defined vehicle architecture, our award ... We achieve this through deep vertical integration, with design, engineering, and production ...

Showing results 21-31

L4 Software Engineer information

See Seattle, WA salary details

$72.3K

$168K

$234K

How much do l4 software engineer jobs pay per year?

As of Sep 6, 2026, the average yearly pay for l4 software engineer in Seattle, WA is $167,980.00, according to ZipRecruiter salary data. Most workers in this role earn between $136,600.00 and $197,000.00 per year, depending on experience, location, and employer.

What is an L4 software engineer?

An L4 Software Engineer typically refers to a mid-level software engineer, often used at companies like Google and other large tech firms. L4 engineers are expected to have several years of experience and are responsible for designing, developing, testing, and maintaining software systems. They often collaborate with cross-functional teams, mentor junior engineers, and contribute to technical planning. The role requires strong coding abilities, problem-solving skills, and a solid understanding of software engineering best practices. Career progression from L4 usually leads to senior engineering roles.

What are the key skills and qualifications needed to thrive as an L4 software engineer?

To thrive as an L4 Software Engineer, you need strong programming skills, a solid grasp of computer science fundamentals, and typically a bachelor's degree in computer science or a related field. Experience with version control systems (like Git), cloud platforms (such as AWS or GCP), and familiarity with development frameworks and CI/CD pipelines are commonly required. Excellent problem-solving, communication, and teamwork skills help you collaborate effectively and contribute to complex projects. These competencies ensure you can deliver high-quality software solutions efficiently while working within diverse engineering teams.

How does an L4 software engineer typically collaborate with product managers and designers during a project?

As an L4 Software Engineer, you'll work closely with product managers and designers throughout the software development cycle. This collaboration often involves participating in planning meetings, providing technical feedback on proposed features, and helping to shape user stories or requirements. You'll be expected to offer insights on feasibility, suggest improvements, and ensure alignment between engineering and product goals. Regular communication and a proactive approach to problem-solving are key to ensuring successful project outcomes.

What is the difference between L4 Software Engineer vs L5 Software Engineer?

AspectL4 Software EngineerL5 Software Engineer
ExperienceTypically 2-4 yearsTypically 4-6 years
ResponsibilitiesContributes to projects, writes code, fixes bugsLeads small projects, mentors juniors, designs solutions
SkillsProficient coding, basic system designAdvanced coding, system architecture, leadership
CertificationsOptional, depends on companyOptional, but often preferred

In summary, an L4 Software Engineer is an early-career professional focused on coding and task completion, while an L5 Software Engineer takes on more leadership, design, and mentorship responsibilities, reflecting increased experience and skills.

How much do L4 software engineers make?

L4 software engineers typically earn a base salary ranging from $120,000 to $180,000 annually, depending on the company, location, and experience. They often receive additional compensation such as bonuses, stock options, and benefits, especially in large tech firms or competitive markets.
Infographic showing various L4 Software Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 87% Full Time, 9% Part Time, and 4% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $167,980 per year, or $80.8 per hour.

Aerospace Systems Engineer II

Blue Origin

Seattle, WA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 11 days ago


Blue Origin rating

8.7

Company rating: 8.7 out of 10

Based on 91 frontline employees who took The Breakroom Quiz

16th of 72 rated aerospace companies


Job description

Application close date:

Applications will be accepted on an ongoing basis until the requisition is closed.

At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We're working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our team of problem solvers as we add new chapters to the history of spaceflight!

The role is part of the In-Space Systems business unit, which is focused on addressing two of the most compelling challenges in spaceflight today: space infrastructure and increasing mobility on-orbit.

The role is part of the In-Space Systems business unit, which is focused on development, manufacturing, and operation of satellite systems to address one of the most compelling challenges in spaceflight today: space mobility. As part of a hardworking team of engineers, you will apply your broad multi-disciplinary engineering knowledge, skills, and methods to help ensure our spacecraft satisfies the needs of our customers through rigorous systems engineering practices. As part our Blue Ring Spacecraft Systems Engineering team you will help ensure that requirements, system designs and operations are shaped to meet program needs. You will assist in the definition and verification of system requirements, interfaces, architecture, and con ops. Finally, you will work with all program interfaces including Assembly, Integration, & Test (AI&T), Mission Systems, Launch Vehicle, Payloads, and Mission Operations.

The position requires strong collaboration within the SSE team and across the entire program. In this fast-paced and dynamic environment, you will contribute to innovative solutions while demonstrating personal leadership, technical competence and judgement, and a commitment to the highest technical standards.

Special Mentions:

  • Travel expected up to 10% of the time
  • Top Secret clearance desired
  • Experience and familiarity with flight software desired

Responsibilities include but are not limited to:

  • Work with the program's Lead Systems Engineer to ensure compliance with design standards, processes, and general best practices.
  • Apply a variety of technical principles and tools in Systems Engineering such as CONOPs development, requirements definition and analysis, and interface definition.
  • Decompose high-level requirements into lower-level system architecture, system design requirements, and functional block diagrams.
  • Work with subsystems to ensure proper requirements definition, verification and validation plans, consistency with system and mission objectives
  • Coordinate with specialty engineering functions in support of subsystem development teams.
  • Oversee verification and validation strategies, plans and processes to ensure software and hardware components, and the integrated spacecraft subsystems will meet system requirements and mission goals.
  • Create and oversee the execution of test plans, procedures and generation of results reports.
  • Collaborate with other program elements (I&T, ground systems, flight operations, mission management, and systems architecture) to understand their needs and create holistic solutions.
  • Identify and assist in the management of technical, schedule and cost risks.
  • Work with the flight software team to resolve implementation issues, review the software development processes, link their development to L3 and L4 requirements and needed functional behaviors.
  • Asist in the planning and develop of system-level verication methods and events.
  • Support and collaborate with the Assembly, Integration and Test team in developing test procedures and scripts.
  • Support integration activities "on the oor" in the spacecraft assembly facility.
  • Asist with proposals based on knowledge of spacecraft capabilities and functions.
  • Manage technical performance measures for the overall vehicle.
  • Participate in gated program reviews and drive subsequent actions to closure.
  • Drive process improvements with a sense of ownership and urgency

Minimum Qualifications:

  • Minimum of a B.S. degree in Mechanical, Electrical, or Aerospace engineering or equivalent technical field.
  • At least 3 years of relevant experience in systems engineering, preferably in the space industry.
  • Demonstrated understanding of systems engineering fundamentals and experience in multiple system lifecycle phases.
  • Successful candidates in this role typically have 5+ years of related experience in the design, development, and flight test of aerospace systems, preferably spacecraft.
  • Experience developing an integrated system with depth in one or more spacecraft subsystems, and/or system design and integration.
  • Experience in definition of space system requirements and concept definitions that span a broad range of mission objectives.
  • Excellent written and verbal communication skills.
  • Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum

Preferred Qualifications:

  • M.S. degree in a relevant technical field
  • Domain experience with spacecraft system and subsystem functions, interfaces, and communication protocols (i.e. serial, 1553, Ethernet, embedded software, etc.).
  • Experience defining and performing complex trade studies
  • Experience with design, development, and certification of spaceflight systems
  • Experience with logical and physical architecture definition and decomposition
  • Experience using hardware or software testbeds and lab environments for software and system verification.

Base Pay Range for:

CA applicants is $99,201.00 - $138,880.35 CO applicants is $90,934.00 - $127,307.25 WA applicants is $99,201.00 - $138,880.35 VA applicants is $99,201.00 - $138,880.35

Other site ranges may differ


Culture Statement

Don't meet all desired requirements? Studies have shown that some people are less likely to apply to jobs unless they meet every single desired qualification. At Blue Origin, we are dedicated to building an authentic workplace, so if you're excited about this role but your past experience doesn't align perfectly with every desired qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.


Export Control Regulations

Applicants for employment at Blue Origin must be a U.S. citizen or national, U.S. permanent resident (i.e. current Green Card holder), or lawfully admitted into the U.S.as a refugee or granted asylum.


Background Check

  • Required for all positions: Blue's Standard Background Check
  • Required for Certain Job Profiles: Defense Biometric Identification System (DBIDS) background check if at any time the role requires one to be on a military installation
  • Required for Certain Job Profiles: Drivers who operate Commercial Motor Vehicles with a Gross Vehicle Weight (GVW), Gross Vehicle Weight Rating (GVWR) or combination of power unit and trailer that meets or exceeds 10,001 lbs. and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training.
  • Required for certain Job Profiles: Ability to obtain and maintain Merchant Mariner Credential, which includes pre-employment and random drug testing as well as DOT physical

Benefits

  • Benefits include: Medical, dental, vision, basic and supplemental life insurance, paid parental leave, short and long-term disability, 401(k) with a company match of up to 5%, and an Education Support Program.
  • Stock Options for all regular employees (working at least 20 hours/week)
  • Paid Time Off: Up to four (4) weeks per year based on weekly scheduled hours, and up to 14 company-paid holidays.
  • Dependent on role type and job level, employees may be eligible for benefits and bonuses based on the company's intent to reward individual contributions and enable them to share in the company's results, or other factors at the company's sole discretion. Bonus amounts and eligibility are not guaranteed and subject to change and cancellation. Please check with your recruiter for more details.

Equal Employment Opportunity

Blue Origin is proud to be an Equal Opportunity/Affirmative Action Employer and is committed to attracting, retaining, and developing a highly qualified and dedicated work force. Blue Origin hires and promotes people on the basis of their qualifications, performance, and abilities. We support the establishment and maintenance of a workplace that fosters trust, equality, and teamwork. We provide all qualified applicants for employment and employees with equal opportunities for hire, promotion, and other terms and conditions of employment, regardless of their race, color, religion, sex, sexual orientation, gender identity, national origin/ethnicity, age, physical or mental disability, genetic factors, military/veteran status, or any other status or characteristic protected by federal, state, and/or local law. Blue Origin will consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state, and local laws, including the Washington Fair Chance Act, the California Fair Chance Act, the Los Angeles Fair Chance in Hiring Ordinance, and other applicable laws. For more information on "Know Your Rights," please see here.


Affirmative Action and Disability Accommodation

Applicants wishing to receive information on Blue Origin's Affirmative Action Plans, or applicants requiring a reasonable accommodation in order to participate in the application and/or interview process, please contact us atEEOCompliance@blueorigin.com. Please note this is a publicly managed inbox. Please do not include any personal medical information in your request.



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About Blue Origin

Sourced by ZipRecruiter

Blue Origin is a private aerospace manufacturing and suborbital spaceflight services company based in Kent, Washington, USA. Established in 2000 by Amazon founder Jeff Bezos, the company operates in the cutting-edge aerospace industry aiming to build a future where millions of people can live and work in space. They develop a variety of technologies, with a focus on reusable rocket systems which significantly reduce the cost of space travel. Blue Origin's core mission is to make this vision come to life by incrementally building on its successes with an ultimate vision of dramatic cost reduction and increased reliance on reusable spacecraft.

Industry

Space research administration

Company size

1,001 - 5,000 Employees

Headquarters location

Kent, WA, US

Year founded

2000