Embedded Systems Staff Engineer

Description

The company helps security teams move faster by identifying the exposures that matter most so they can act first and stay ahead of attackers. By combining the power of humans and AI, teams can preempt attack paths and prevent breaches. Based in San Francisco and New Hampshire, the company is supported by General Catalyst, Rally Ventures, Costanoa Ventures, and others. Visit the company's site .

As a Embedded Systems Staff Engineer, you will own the architecture, maintenance, and continued improvement of ARM architecture support within the company.

Job Summary

In this role, you will work at the boundary between CPU emulation, operating-system semantics, binary analysis, fuzzing, and symbolic execution. You will improve the company’s ability to execute and analyze ARM and AArch64 binaries, diagnose subtle differences between native and emulated execution, and extend our support for new operating environments, binaries, and firmware targets.

Essential Duties & Responsibilities

Own and evolve the company’s ARM and AArch64 execution support using emulation.

Diagnose correctness, compatibility, and performance issues involving instruction semantics, memory management, exceptions, system calls, signals, threading, and process startup.

Add support for new ARM architectural features, instruction-set extensions, ABI variants, and execution environments.

Investigate discrepancies between native execution, QEMU execution, and the company’s analysis engines.

Improve the performance, determinism, observability, and reliability of large-scale emulated workloads.

Develop test suites and regression infrastructure for instruction-level and end-to-end ARM behavior.

Debug customer binaries and firmware that exercise unusual platform, compiler, or operating-system behavior.

Education, Experience, Knowledge, Skills, and Abilities

6+ years experience developing C/C++ on Linux

Significant experience working with low-level systems software such as emulators, virtual machines, operating systems, compilers, debuggers, binary translators, hypervisors, or dynamic instrumentation systems.

Deep understanding of ARM and/or AArch64 assembly, calling conventions, exception models, privilege levels, and memory semantics.

Strong understanding of Linux process execution, including ELF loading, virtual memory, signals, threads, system calls, dynamic linking, and debugging facilities.

Experience debugging complex native-code failures using tools such as GDB, LLDB, strace, perf, sanitizers, core dumps, or custom instrumentation.

Ability to reason about instruction-level behavior and identify subtle differences between architectures or execution engines.

Familiarity with fuzzing, symbolic execution, dynamic binary analysis, or program instrumentation, plus strong software-design skills and experience owning technically complex systems.

Preferred Experience

OCaml or other functional programming language

Background in vulnerability research, reverse engineering, or firmware analysis.

BS degree in Computer Science or related technical field, or equivalent practical experience.

US Person (for ITAR, such as a US citizen, lawful permanent resident, or protected individual)

Conditions

Sitting and / or standing - Must be able to remain in a stationary position 50% of the time

Carrying and / or lifting - Must be able to carry / move laptop as needed throughout the work day.

Environment - remote, work-from-home 100% of the time.

At the company, we strive for fairness, equality and to create an environment that allows our people to perform at their very best. Our compensation philosophy is to foster a collaborative community that rewards, attracts and retains the best possible talent. The provided compensation details are based on US national averages and we retain the flexibility to tailor to the needs of the business.

The national estimate for the current hourly rate for the position of $96.75 - $133.03.

This position may also be eligible to participate in a discretionary bonus program or commission plan, subject to the rules governing the program, whereby an award, if any, depends on various factors, including, without limitation, individual and organizational performance.

Culture

At the company, we understand that diversity in the workplace is vital to a company’s success and growth. We strive to make sure that people are included and have a sense of being part of making the company not only a great product but a great place to work.

We regularly hear from both customers and researchers that the company feels like a family, and we strive to maintain that internally as well.

Our team consists of a broad range of people: musicians, adventure sports junkies, nature lovers, parents, cereal enthusiasts, night owls, cyclists, artists—you get the point.

At the company, we are solving security threats and vulnerabilities that are relevant to everyone, therefore we believe solving these problems takes all kinds of backgrounds. We value the perspectives and experiences people from underrepresented backgrounds bring.