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Full timeTechnology

Core Software Engineer

EspaceSanta Clara🇺🇸United States

Quick overview

Salary$160k - $200k/yr
SeniorityMid Senior
Employment typeFull Time
Work modeOn Site
LocationSanta Clara, United States
DockerMicroservicesOpenStackRustAWS5GC++GrafanaHTTPHelmIoTPrometheusPythonVMwareRESTKubernetesCI/CDLinux

Job 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.

We are hiring a Core Software Engineer to deliver reliable 5G Core network functions and control-plane services that support next-generation mobile and satellite networks. You will architect, develop, and maintain critical network functions and control-plane services that form the backbone of next-generation mobile telecommunications infrastructure.

This is a hands-on engineering role for someone who takes responsibility for results, makes timely decisions, and stays engaged until the solution works. You will apply your knowledge of 3GPP protocols, distributed systems, and service-oriented architecture to advance our 5G Core processing solutions and turn technical commitments into working software.

Your mission

    Build 5G Core software that meets protocol requirements, interoperates across network functions, and improves network performance. Turn requirements into clear priorities, testable acceptance criteria, and completed releases. Surface risks early, resolve blockers with urgency, and verify results before closing the work.

What you will own

  • Network Function Delivery: Design, develop, and maintain 5G Core Network Functions and their associated service-based interfaces (Namf, Nsmf, Nupf, etc.) using modern C++, Python, or equivalent languages on Linux-based systems

  • Protocol implementation: Develop and implement 3GPP protocols including NAS, PFCP, GTP-U, HTTP/2, and network interfaces such as N4 and N11 to ensure standards compliance and interoperability

  • Distributed architecture: Build and enhance service-based microservices architecture with REST-like APIs, leveraging distributed systems design patterns and modern deployment practices

  • Fault resolution: Troubleshoot complex distributed systems issues, analyze control-plane signaling paths, and debug protocol interactions across the 5G core infrastructure

  • Control-plane visibility: Develop and maintain 5G core network control-plane probes for real-time monitoring, protocol decoding, signaling extraction, and network traffic analysis

  • Test coverage and release readiness: Design and implement automated test frameworks for functional, integration, and regression testing of 5G Core features with comprehensive results tracking and validation

  • Technical alignment: Collaborate with technical leaders and cross-functional teams to elicit requirements, develop technical documentation, and lead concept demonstrations

  • Performance improvement: Perform technical research, develop performance analysis tools, and optimize network configurations to improve system KPIs and operational efficiency

What you will bring to this role

  • Hands-on development experience with 5G Core Network Functions or equivalent LTE/4G EPC (MME, SGW, PGW, HSS) systems

  • Proficiency in C++, Python, or equivalent modern programming languages with demonstrated ability to architect and implement complex telecommunications processing solutions

  • Deep knowledge of 3GPP specifications and RAN/5G-NR/LTE protocols with hands-on experience resolving protocol-layer issues

  • Strong understanding of distributed systems, microservices architecture, and control-plane signaling patterns

  • Experience with automated testing frameworks, CI/CD pipelines, and test case development with comprehensive tracking methodologies

  • Proven debugging and performance optimization skills with exceptional analytical capabilities and strong engineering fundamentals

  • Experience troubleshooting and analyzing logs from network elements using specialized tools

Preferred experience

  • 5G Core network control-plane probe development for advanced monitoring, traffic replay, and protocol analysis

  • In-depth knowledge of specific 5G network functions: AMF, SMF, UPF, UDM, PCF, AUSF, NRF including behavior, interactions, and call flows

  • Observability frameworks and tools (OpenTelemetry, Prometheus, Grafana) for monitoring distributed telecommunications systems

  • Network virtualization and containerization technologies (KVM, VMware, OpenStack, AWS, Kubernetes, Helm, Docker)

  • Reverse engineering of telecommunications protocols and proprietary network implementations

  • User Equipment (UE) and network element log analysis using specialized tools (QXDM, XCAL, or equivalent)

  • Development with modern languages like Go or Rust for systems programming

  • Experience with LTE/4G EPC systems (MME, SGW, PGW, HSS) demonstrating protocol evolution knowledge

  • Building software tools and data pipelines for network performance analysis and optimization

What success looks like

    Features meet agreed acceptance criteria and release commitments. Protocol interactions are validated, defects receive timely corrective action, and regression coverage grows with the system. Network performance improvements are supported by data. Your partners know what you own, where risks stand, and when the work is complete.

This is a full time, exempt position, based out of our Santa Clara, CA location. The target base pay for this position in Santa Clara, California is $160,000-$200,00 annually. The total compensation package will be determined by various factors such as your relevant job-related knowledge, skills, and experience and location.

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.

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

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