Senior Embedded Software Engineer

Lumex Talent; Long Beach (CA); On-site; USD 140,000 - 220,000; Full time

Job summary

Lumex Talent is seeking a Senior Embedded Software Engineer for an on-site role in Long Beach, CA. You will own sub-systems across the vehicle platform, leading low-level architecture, firmware bring-up, and real-time software execution in either Embedded Linux or bare-metal environments.

You will collaborate with Electrical and Avionics teams, debug hardware/software integration with standard lab tools, and contribute to CI/CD and automated testing within a Defense-grade maritime platform

Qualifications

• 4+ years of embedded engineering experience required.
• Proficiency in C/C++ and ability to read schematics.
• Experience with hardware bring-up and debugging using standard lab equipment.

Responsibilities

• Own the full software lifecycle for your sub-system including requirements, architecture, and field validation.
• Write highly deterministic systems code with strict latency and memory constraints.
• Collaborate with Electrical and Avionics engineers to debug hardware/software integration.
• Build automated test suites including HIL and SIL setups.
• Support integration, lab testing, and field/water trials to validate platform performance.
• Maintain CI/CD pipelines, static analysis, and automated builds.

Skills

Embedded Linux

Bare-metal/RTOS

C/C++

Tools

Oscilloscopes

Logic Analyzers

Debuggers

Job description

Job Title: Senior Embedded Software Engineer

Location: Long Beach, CA (100% On-Site)

Compensation: $140,000 - $220,000 Base + Generous Early-Stage Equity

About the Company

We are partnering with a high-growth, venture-backed defense technology startup developing next-generation autonomous maritime and underwater platforms for critical national security missions. Backed by top-tier venture capital firms and backed by strong defense demand, they are rapidly scaling their hardware and software teams to build mission-critical systems from the ground up.

This is a true 0-to-1 engineering environment. Rather than maintaining legacy codebases, you will work directly with early hardware, complex constraints, and modern system architectures to turn high-level concepts into flight-ready production systems.

About the Role

Our client is hiring multiple Senior Embedded Software Engineers to serve as technical owners for core sub-systems across their vehicle platform. Engineers will lead low-level architecture, software execution, and hardware bring-up in one of three key focus areas:

• Embedded Linux Platform: System architecture, board support packages (BSPs), custom drivers, secure boot configuration, real-time Linux tuning, and network interfaces.
• Motor Control & Actuation Firmware: Microcontroller firmware, closed-loop control algorithms, fault detection logic, and power stage integration.
• Battery Management Systems (BMS): MCU firmware stacks, cell-level monitoring, safety interlocks, state-of-charge algorithms, and thermal management logic.

Key Responsibilities

• Own the full software lifecycle for your assigned sub-system, including requirements, architecture, C/C++ development, board bring-up, and field validation.
• Write highly deterministic systems code operating under strict latency, memory, and timing constraints.
• Collaborate closely with Electrical and Avionics engineers to debug hardware and software integration issues using oscilloscopes, logic analyzers, and debuggers.
• Build automated test suites, including Hardware-in-the-Loop (HIL) and Software-in-the-Loop (SIL) test setups.
• Support integration, lab testing, and field/water trials to validate platform performance in real-world environments.
• Maintain modern CI/CD pipelines, static analysis, and automated build workflows.

Basic Qualifications

• Deep practical experience in either Embedded Linux development OR bare-metal/RTOS microcontroller firmware.
• High proficiency in low-level systems programming languages (C or C++).
• Demonstrated ability to read schematics, evaluate hardware interfaces, and debug board bring-up using standard lab equipment.
• Solid understanding of low-level peripherals, concurrency, memory allocation, and real-time scheduling.
• Must be a U.S. Citizen eligible to obtain and maintain a U.S. Security Clearance.
• Ability to work 100% on-site in Long Beach, CA.
• 4+ years of relevant embedded engineering experience (technical depth and hands-on delivery matter most).

Preferred Experience

• Background in robotics, autonomous vehicles, UAVs, aerospace, defense, or complex electromechanical platforms.
• Experience taking an embedded product from blank-sheet design through hardware deployment.