Job Details

About FullStack

FullStack is one of the fastest-growing software consultancy companies in the Americas. We deliver transformational digital solutions to top global companies and Silicon Valley startups. As an employee-first company, we focus on hiring the most talented software designers and developers by creating a positive, respectful, and supportive work environment where they can achieve their greatest potential.

We're most proud of:

• Offering life-changing career opportunities to talented software professionals across the Americas.
• Building highly-skilled software development teams for hundreds of the world's greatest companies.
• Having delivered hundreds of successful custom software solutions, which have positively impacted the lives and careers of millions of users.
• Our 4.2-star rating on GlassDoor.
• Our client Net Promoter Score of 68, twice the industry average.

The Position

We're looking to hire a Senior Embedded Firmware Engineer to join our team. You'll work with our incredible clients in one of two ways:

• Team Augmentation: You will integrate directly into our client's team and work alongside their existing designers and engineers daily.
• Design & Build: You will work on a FullStack product team to build and deliver a product to our clients.

What We Are Looking For

• 5+ years of professional experience as a Firmware Engineer or Embedded Systems Engineer.
• Advanced English is required.
• Successful completion of a four-year college degree is required.
• Strong hands-on experience developing embedded firmware using C and C++.
• Proven experience working with ESP32 platforms, with ESP32-C6 and ESP32-S3 strongly preferred.
• Experience developing embedded systems from prototype hardware to production-ready devices.
• Hands-on experience with audio processing, DSP, and low-latency audio streaming (e.g., WebSockets, UDP).
• Experience with BLE-based proximity features and wireless communication on embedded devices.
• Strong background in low-power optimization, including deep sleep modes and battery management.
• Experience working with IMU sensors and motion tracking in embedded systems.
• Familiarity with on-device AI inference or embedded ML workloads is a strong plus.
• Demonstrated ability to optimize firmware for performance, reliability, and real-time constraints.
• Comfortable working alongside hardware iteration cycles and manufacturing timelines.
• Strong understanding of embedded development workflows, including code reviews, documentation, testing, and maintainability.
• Ability to work through new and difficult issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of applications.
• Forensic attention to detail.
• A positive mindset and a can-do attitude.
• Meaningful experience working on large, complex systems.
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon.
• Ability to consistently work 40 hours per week.

What We Offer

• Competitive Salary.
• Paid Time Off (vacation, sick leave, maternity and paternity leave, holidays).
• 100% remote work.
• The ability to work with leading startups and Fortune 500 companies.
• Health, dental, and vision insurance.
• 401(k) w/ 4% match.
• Ample opportunity for career advancement.
• Continuing education opportunities.

FullStack is proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status.

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