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About the Role

Ericsson Enterprise Wireless Solutions is expanding its modem engineering team in North America, focusing on end-to-end development of advanced 5G cellular use cases. This role involves leading the architecture, development, and integration of cellular modem drivers and eSIM/eUICC provisioning stacks on OpenWrt-based platforms, owning the full modem connectivity stack, driving technical strategy, and establishing best practices for carrier-grade modem and eSIM deployments across 5G product lines. Ericsson Inc. does not sponsor U.S. work authorizations for this job position, including U.S. immigration filings for initial and/or change of employer paperwork for H-1’s, H-1B1’s, E-3’s, O-1’s, and TN’s. Ericsson also does not hire F-1’s working on CPT or EAD for this position.

Responsibilities

Design, develop, and optimize modem host platform software for LGA modules
Architect and own the end-to-end modem and eSIM integration stack on OpenWrt platforms
Design and develop Linux kernel drivers for modem interfaces (USB/PCIe/SDIO)
Implement and optimize QMI/RMNET/AT command layers for modem control and data path
Architect and implement a Local Profile Assistant (LPA) for eSIM profile lifecycle management
Develop secure channel protocols (SCP03, SCP80/81) between the platform and eUICC
Integrate SM-DP+ provisioning flows for remote profile download and activation
Implement connection management with failover, reconnection, and multi-SIM orchestration
Drive modem firmware update (FOTA) strategy and implementation
Lead carrier certification efforts (GCF, PTCRB) and GSMA compliance (SAS-UP, SAS-SM)
Define the technical roadmap for next-generation modem and eSIM platform capabilities
Design and implement CI/CD pipelines and automated test frameworks for modem and eSIM firmware
Build hardware-in-the-loop (HIL) test infrastructure and automated fleet provisioning workflows
Establish coding standards, review processes, and architectural guidelines for the team
Support and develop senior and mid-level engineers on modem driver and eSIM development
Collaborate with mobile network operators, eUICC vendors, and chipset vendors for interoperability

Requirements

10+ years in embedded Linux, modem, or telecom development
5+ years in cellular modem driver development
3+ years with eSIM/eUICC integration (GSMA RSP)
3+ years with OpenWrt or similar embedded Linux
3+ years in technical leadership
Linux kernel modem driver development (USB, PCIe, qmi_wwan, mhi)
OpenWrt/LEDE build system, package development, and platform customization
eSIM/eUICC architecture and GSMA RSP specifications (SGP.02, SGP.22, SGP.32)
Cellular modem control interfaces (QMI, RMNET, AT commands, NCM)
Secure element communication (ISO 7816, APDU, SCP03)
Proficiency in C/C++ for embedded Linux and real-time systems
Network stack expertise (iptables/nftables, iproute2, netifd, routing, NAT)
PKI infrastructure, certificate management, and secure provisioning
Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or Telecommunications

Skills

Embedded Linux
Modem development
Telecom development
Cellular modem driver development
eSIM/eUICC integration (GSMA RSP)
OpenWrt
Technical leadership
Linux kernel modem driver development (USB, PCIe, qmi_wwan, mhi)
OpenWrt/LEDE build system
Package development
Platform customization
eSIM/eUICC architecture
GSMA RSP specifications (SGP.02, SGP.22, SGP.32)
Cellular modem control interfaces (QMI, RMNET, AT commands, NCM)
Secure element communication (ISO 7816, APDU, SCP03)
C/C++ for embedded Linux
C/C++ for real-time systems
Network stack expertise (iptables/nftables, iproute2, netifd, routing, NAT)
PKI infrastructure
Certificate management
Secure provisioning
Qualcomm SDX-series modem platforms
eUICC vendors
CI/CD tooling (Jenkins, GitLab CI, GitHub Actions)

Location

USA
United States (US)
Santa Clara
Seattle
NY
NJ

Work Type

Full-time

Experience Level

Principal
10+ years in embedded Linux, modem, or telecom development
5+ years in cellular modem driver development
3+ years each with eSIM/eUICC integration (GSMA RSP), OpenWrt or similar embedded Linux, and technical leadership

Education Level

Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or Telecommunications
Master’s or Ph.D. preferred

Salary/Compensations

Salary range for Santa Clara, CA: $232,000-292,500
Opportunity for an annual bonus based on business and individual performance

Benefits

Competitive package
Subsidized, nationwide PPO medical benefit options
Low-deductible Point of Service Plan
Qualifying High Deductible Health Plan (HDHP) with generous company-provided HSA contribution
Subsidized HMO option through Kaiser (for California employees)
Subsidized dental coverage
Subsidized vision coverage
401(k) plan with a 4% company match and immediate vesting
Company-paid employee basic life and AD&D insurance
Company-paid disability benefits
Minimum of 15 days of accrued vacation (for new employees)
Up to 3 personal days per year
11 annual holidays
8 hours of volunteer time
80 hours of sick time annually
Up to 16 weeks of paid maternity leave at 100% of pay
6 weeks of parental or adoption leave at 100% of pay
Comprehensive Employee Assistance Program
Mobile therapy
Volunteer paid time off

About the Company

Ericsson offers an outstanding opportunity to use skills and imagination to push boundaries.
Build solutions never seen before to some of the world’s toughest problems.
Join a team of diverse innovators driven to go beyond the status quo to craft what comes next.

Equal Opportunity

Ericsson uses a merit-based hiring approach that values people with different experiences, perspectives and skillsets.
This approach drives innovation, essential for future growth.
Encourage people from all backgrounds to apply and realize their full potential.
Ericsson is proud to be an Equal Opportunity employer.
Assistance or accommodation due to a disability can be requested by contacting hr.direct.americas@ericsson.com.