Embedded Software Engineer

Job not on LinkedIn

🕒 October 30

🌐 United States, Canada – Remote

🇺🇸 United States – Remote 🇨🇦 Canada – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 25%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Arc

WebsiteLinkedInAll Job Openings

11 - 50 employees

🤖 Artificial Intelligence

☁️ SaaS

🤝 B2B

🔥 Funding within the last year

💰 $10.8M Seed Round on 2026-05

Artificial Intelligence • SaaS • B2B

Arc is a voice AI platform (Sparkpoint Inc. , d/b/a Arc) that automates and optimizes fast-food drive‑thru ordering as a digital channel. Arc delivers brand‑specific, real‑time voice agents that integrate with existing POS systems and base stations (no replacement hardware required), enabling AI‑powered upsells, improved order accuracy, faster lines, and operational insights via dashboards and A/B testing. The product targets quick‑service restaurant operators and emphasizes measured lift in average order value, accuracy, and labor savings.

📋 Description

• Design and evolve microcontroller firmware for status indication, physical audio bypass relays, and vehicle detection signal routing • Build and harden the edge compute host application and full-duplex, multi-process audio pipeline connecting drive-thru hardware to the cloud backend • Own the serial protocol and health-monitoring layer between microcontroller and host • Implement failure detection, exponential-backoff recovery, and state persistence across restarts • Debug issues spanning audio drivers, USB serial, relays, and third-party POS integrations using logs and telemetry • Improve deployment, monitoring, remote management, telemetry, remote access, and safe over-the-air updates for production device fleets • Partner with product and operations to translate drive-thru and legacy-hardware constraints into robust technical solutions

🎯 Requirements

• 5+ years of professional software engineering experience, including meaningful time in embedded systems, firmware, or hardware-adjacent software • Comfort in C++ for resource-constrained microcontrollers • Strong general-purpose backend skills in Python or other modern languages • Experience designing for reliability in real-time or latency-sensitive systems, especially unattended field systems • Practical experience with serial/USB protocols, audio I/O, or similar low-level hardware interfaces • Ability to drive loosely defined hardware/software problems to well-architected solutions • Strong judgment about scaling versus moving quickly • Communication skills to explain technical reasoning • Bonus: experience with audio processing/DSP, echo cancellation, remote fleet management, or point-of-sale/legacy hardware integrations

🏖️ Benefits

• Significant influence over the product and engineering culture at an early-stage company • High-autonomy role with substantial product influence

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