Senior Software Engineer, Firmware

Purpose Brands; Woodbury (MN); Hybrid; USD 140,000 - 155,000; Full time

Benefits offered by this job

Hybrid Work Environment

Medical, Dental, Vision Coverage

401(k) Matching

Generous PTO

Employee Discounts

Job summary

Purpose Brands is seeking a Senior Software Engineer, Firmware to join our Edge Engineering team in Woodbury, MN. You will own, design, and maintain our connected fleet of devices including access control systems and studio experiences.

The role emphasizes C/C++ firmware for microcontrollers, multi-threaded software, and automated testing with GTest/GMock, with collaboration across hardware, backend, QA, and supply chain to keep our devices reliable at scale.

Qualifications

• Proficiency in writing firmware for microcontrollers (C/C++).
• Experience with multithreaded applications (mutexes/threads).
• Experience writing and integrating automated test cases (GTest, GMock).
• Bachelor's degree in Computer/Electrical Engineering or related field preferred.

Responsibilities

• Design, write, and maintain C++ firmware for the Access Control System.
• Manage integration between hardware and backend systems.
• Develop internal tools for fleet management and automation testing.
• Write and maintain automated testing suites and technical docs.
• Collaborate with hardware vendors and cross-functional teams to ensure reliability at scale.

Skills

C/C++ firmware development

Multithreading

GTest/GMock

Firmware for microcontrollers

Education

Bachelor's degree in Computer or Electrical Engineering

Tools

ESP32

nRF series

Raspberry Pi/Arduino

CMake

Job description

Purpose Brands, the parent company of Orangetheory, Anytime Fitness, Waxing the City, The Bar Method, and Stronger U, is seeking a Senior Software Engineer, Firmware to join our team. This is a great position for someone who is looking to expand their career and join a company with a fun, fast-paced, and inspirational culture.Purpose Brands is looking for a Senior Software Engineer to join our Edge Engineering team. In this role you will own, design, create, and maintain our connected fleet of devices. This includes our access control system (Anytime Fitness) and our connected studio experience (Orangetheory Fitness).Our systems combine custom ICs, bespoke vendor hardware, and off-the-shelf components that bring our 7000+ studios to life for our millions of global members. An ideal candidate will have a baseline of embedded engineering experience in addition to familiarity with a connected system (mobile, backend, or other very extensive hardware experience).Purpose/Impact: Duties & Essential FunctionsFirmware + Integration Responsibilities (60% of time)Collaborate with the broader Edge Engineering firmware, backend, QA, and lead engineersDesign, write, and maintain C++ firmware code for our Access Control SystemManage the integration between our hardware and backend systemsIdentify, design, and develop internal tools for fleet managementWrite and maintain our automated testing suiteWrite and maintain our technical documentationHardware Responsibilities (20% of time)Work with hardware design vendors to spec and deliver new hardware revisionsWrite, develop, and execute acceptability and manual test plansAssist our dedicated support team in debugging intricate hardware problems globallyCross-Team Collaboration (20% of time)Become the go-to resource for answering deep technical questions on our hardware technology stackCollaborate with our hardware & SaaS vendors to maintain excellent working relationshipsCollaborate with our Supply Chain, Warehouse, and Provisioning teams to ensure stable product is always availableStrengths and BackgroundRequired Qualifications and ExperienceProven ability to set and hit commitments while maintaining technical excellenceProven ability to self-direct and organize in a fast-paced distributed collaborative environmentProficiency in writing firmware for microcontrollers (C/C++)Proficiency in multithreaded applications (mutexes/threads/pthreads/etc.)Experience in writing and integrating automated test cases (GTest, GMock, etc.)Deep knowledge in at least one \"Nice-to-have\" section belowNice-to-have - Extensive HardwareOver 5 years of experience developing hardware products from design to rolloutExperience integrating I2C / RS485 / SPI / BLE / digital IODeep experience with a variety of microcontrollers or projects (ESP32, nRF, Raspberry Pi / Arduino, etc.)Experience reading and debugging wiring diagramsExperience designing hardware projects end-to-endExperience reading and integrating technical specification documentationExperience working with contract manufacturers and logisticsExperience with toolchains and build chains (CMake/linkers/etc.)Proven ability debugging intricate hardware problems at global scaleNice-to-have - Extensive BackendOver 5 years of experience delivering real-time connected backend systemsExperience developing cloud-native backend applications (.NET/Java/Kotlin/other)Experience developing and integrating microservicesExperience developing and integrating AuthZ/AuthN/OAuth2Experience managing certificates and working with cryptographic tools (TLS certificates, OpenSSL CLI, X509 certificates, asymmetric and symmetric keys, etc.)Experience with Infrastructure as Code (Terraform/CDK/other)Experience developing build systems and/or managing CI/CD (GitHub Actions, TeamCity, etc.)Nice-to-have - MobileExperience in mobile development (iOS or Android or both)Experience interfacing with microcontroller BLE in Peripheral and Central modesExperience developing real-time hardware integrations at high fidelity (audio processing, video processing, high frame rates with minimal jitter)Things that would excite us about youDeep interest in all forms of technologyProfessional or personal projects leveraging microcontrollersProjects involving devices communicating with one another in interesting waysExperience with packet-capture tooling (Wireshark, Logic Analyzers, BLE capture, etc.) or deep networking technology (TCP/UDP/ARP/low-level network stacks)Experience with Apple, Google, or Samsung Wallet development and integrationDegree in an appropriate field (Computer Engineering, Software Engineering with a hardware emphasis, etc.)Salary Range: $140k-155kWhat’s in it for you?We offer a competitive salary along with exceptional benefits such as:Medical, Dental and Vision CoverageHybrid Work EnvironmentLife and Disability InsuranceUnlimited Time off + Paid HolidaysFlexible Friday's between Memorial Day and Labor Day401(K) Savings Plan Matching at 4%10 Coaching and Therapy sessionsMental Health BenefitsBrand Discounts & ReimbursementsIn-house workout facilitiesProfessional Development OpportunitiesTeam Building, Employee Engagement Activities & so much moreWORK SCHEDULEPurpose Brands LLC, currently observe the following hybrid work model for employees at our Boca Raton (FL), Woodbury (MN), and Seattle (WA) offices:Remote optional: FridaysOn-site days: Mondays, Tuesdays, Wednesdays and ThursdaysDIVERSITY, EQUITY, AND INCLUSION STATEMENTPurpose Brands is committed to encouraging, facilitating, and upholding an environment centered on diversity, equity, and inclusion across every facet of the Purpose Brands. We will work to create a sustainable culture that supports a healthy space for learning and growing, valuing, and empowering every employee, inspiring a diverse franchise network, and uplifting the members and communities we serve.EEO STATEMENTPurpose Brands provides equal employment opportunity to all individuals regardless of their race, color, creed, religion, gender, age, sexual orientation, national origin, disability, veteran status, or any other characteristic protected by state, federal, or local law. Discrimination of any type will not be tolerated.