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5G Core - Senior Software Integration and Test Engineer – 5G CORE REQUIRED

E-Space Saratoga, California, United States

onsitefull-time

Salary: USD 100,000–200,000 per year

Posted Oct 22, 2025Apply by Jan 7, 2026

Role & seniority: Senior Software Integration & Test Engineer – 5G Core (≈8+ years in testing Wireless Communications and Networking)

Stack/tools: 5G Core Network; test design and execution (automated and manual); test strategy creation; cross-functional collaboration; tool evaluation and infrastructure-focused methodologies; mentoring

Top 3 responsibilities

  • Develop and implement a comprehensive testing strategy for 5G Core Network and subsystems

  • Design, execute and document test cases (features, performance, scalability, stability, security); reproduce and validate customer issues

  • Evaluate and recommend new testing tools; mentor junior team members and support cross-team integration

Must-have skills

  • 8+ years in testing wireless/Networking products

  • Strong experience in test strategy, test case design, automated/manual testing, and validating fixes

  • Ability to collaborate with software, hardware, and platform teams; mentoring capability

Nice-to-haves

  • Direct experience with LEO satellite components, in-orbit activities, or space-based communications

  • Location & work type: Saratoga, CA; full-time, exempt (on-site)

Notes: Some phrases are kept neutral and concise to fit a job-summary style. Compensation range ($100k–$200k) omitted per request unless needed.

Full Description

Ready to make connectivity from space universally accessible, secure and actionable? Then you’ve come to the right place!

E-Space is bridging Earth and space to enable hyper-scaled deployments of Internet of Things (IoT) solutions and services. We are building a highly-advanced low Earth orbit (LEO) space system that will fundamentally change the design, economics, manufacturing and service delivery associated with traditional satellite and terrestrial IoT systems.

We’re intentional, we’re unapologetically curious and we’re 100% committed to innovate space-based communications and deliver actionable intelligence that will expand global economies, protect space and our planet and enhance our overall quality of life.

As a Senior SW Integration & Test Engineer – 5G Core, your primary responsibility will be to integrate and test 5G Core Network products. Leveraging your extensive 8+ years of expertise in testing Wireless Communications and Networking products, you will play a crucial role in ensuring the quality and reliability of our systems.

This position will report to the Director – Quality Assurance and work closely with Software, Hardware and Platform Engineering teams. This position is based in our Saratoga, CA office.

What you will do

5G Core Network Testing Strategy

  • Develop a comprehensive strategy for testing 5G Core Network and its sub-systems.
  • Collaborate with cross-functional teams to ensure seamless integration of all software and hardware components.

Test Case Design and Execution

  • Create detailed test cases covering features, functions, performance, scalability, stability, and security.
  • Execute both automated and manual test cases, documenting results and recommending corrective actions.

Tool Evaluation and Recommendation

  • Investigate and recommend new tools for development of the product.
  • Focus on test architecture infrastructure, design, and methodologies.

Mentoring and Support

  • Mentor junior team members, sharing your knowledge and best practices.
  • Reproduce customer-reported issues and validate fixes.

$100,000 - $200,000 a year

This is a full time, exempt position, based out of our Saratoga, CA office.

The total compensation packaged will be determined by various factors such as your relevant job-related knowledge, skills, and experience.

We are redefining how satellites are designed, manufactured and used—so we’re looking for candidates with passion, deep knowledge and direct experience on LEO satellite component development, design and in-orbit activities. If that’s your experience – then we’ll be immediately wow-ed.

E-Space is not currently able to provide employment sponsorship for candidates who do not hold work authorization for the location of this role. The Company is not currently able to provide employment sponsorship for candidates who do not hold work authorization for the location of this role.

Why E-Space is right for you

As a member of our team, you will play a crucial role in driving our success. Our team members have a strong sense of dedication and responsibility; this includes a strong commitment to our mission to create an entirely new suite of global capabilities to improve lives, business efficiencies and build a smarter planet. This means that there will be times when extra hours, including nights and weekends, may be needed to meet critical deadlines and mission goals. In return, we offer a dynamic work environment with opportunities for professional growth and development and the chance to make a meaningful impact in a high-growth industry.

We want you to make the most of your journey at E-Space. That’s why we support and invest in the physical, emotional and financial well-being of our team members and their families. Some of what you can expect when working at E-Space

An opportunity to really make a difference Sustainability at our core Fair and honest workplace Innovative thinking is encouraged Competitive salaries Continuous learning and development Health and wellness care options Financial solutions for the future Optional legal services (US only) Paid holidays Paid time off

multi-location

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