Senior Firmware Engineer - Wireless & RF Communications

At Halter, we’re on a mission to enable farmers and graziers to run the most productive and sustainable operations. Our customers are using Halter to break free from the time-intensive constraints of conventional practices. Imagine watching 500 cattle stand up and walk calmly towards their next break? No quad bikes, no dogs, no fences. Just a group of cattle walking at their own pace. People say it looks like magic. Our customers are revolutionizing grazing with Halter. It's changing lives and transforming an industry. People join Halter to do meaningful work. By joining us you’ll be solving challenging problems within a talented team and a culture built for high performance. Our team out-think, out-work and out-care. We’re committed to delivering real change in the world - this isn’t easy, and in truth, we love that it’s hard.

At Halter, we’re building more than software - we’re transforming the way the world farms. Our smart collars let farmers shift, monitor, and care for their cattle via deep integrations & insights. Behind it all is the Network Team, powering one of the world’s largest private IoT networks with 1 Million connected devices and counting.

We’re looking for a Senior Firmware Engineer to help our growth through multiple international markets this year, owning the RF and wireless communications firmware that keeps our collars connected in the field - primarily spanning 4G/5G (3GPP) & LoRa protocols.

What you will own in this role

• Design, implement and deliver new features and performance improvements to our comms firmware stack, across cellular (4G/5G, 3GPP), LoRa, Wi-Fi/HaLow, Zigbee, and other RF protocols

• Own comms firmware through its full lifecycle - from requirements and design through to mass deployment and in-field maintenance

• Work at the edge of ultra-low power design, balancing radio performance, battery life, and reliability on resource-constrained hardware

• Drive improvements to our quality and testing systems for RF/wireless firmware, including in-field upgrades and monitoring tooling

• Work closely with the network, software, and other engineering teams to ship high-impact comms features quickly

• Support and mentor other engineers through design conversations, code reviews, and generous context sharing

You’ll thrive in this role if you

• Have designed and delivered complex embedded firmware for resource-constrained devices, ideally with hands-on experience in one or more of 4G/5G/3GPP, LoRa, Wi-Fi, Wi-Fi HaLow, Zigbee, or other RF/wireless protocols

• Love solving hard technical problems and delivering awesome features to customers

• Are a strong team player who contributes to the team's performance and excels in giving and receiving feedback

• Are comfortable working with low-level hardware, radio stacks, and resource-constrained systems

• A degree in engineering (software, electronics, mechatronics) is nice to have, but not essential

This role also ensures that you have

• Impact that matters: Your firmware keeps animals healthy and farms productive

• Massive scale: Help build the comms backbone that will connect millions of animals

• Culture that clicks: High-performing, office-first, mission-led team (with dogs hanging around the office)

• Perks that support: Wellness benefits, paid parental leave, equity, and a growth budget

Why our team loves working at Halter:

• Work that genuinely matters. Every now and again a company comes along that transforms an entire industry and leaves the world in a better place. Our team gets to be part of something truly meaningful, helping farmers improve their livelihoods, spend more time with their families, and build more sustainable operations.

• Spectacular people solving hard problems. Our culture is designed for talented people to do work that changes lives. The team is filled with diverse, kind, and driven people who push each other to do their best work. You'll be thrown into the deep end, tackling complex challenges and building something tangible that solves real problems.

• You'll grow here. Autonomy, mastery, and learning define how we work. You'll have the freedom to work on interesting problems, master new skills, and continuously develop yourself, both through your role and our $1,000 personal growth fund.

• This isn't easy, and we love that it's hard. Working at Halter will be the most rewarding and the most challenging work of your life. We move fast, take bold bets, and work hard to reshape an entire industry. As one team member put it: "Joining Halter is a bit like strapping yourself to a rocket ship, but it's an epic journey to be a part of!"