Overview

We’re hiring a Senior Firmware Engineer (Security‑Focused) to join Flex’s engineering team supporting Xylem/Sensus, a global leader in smart metering technologies for water and energy.

Responsibilities

- Design and implement embedded security protocols (RSA, ECC, AES, Secure Boot, firmware signing, etc.)
- Enable and integrate hardware cryptographic accelerators
- Ensure compliance with security standards such as NIST, FIPS, ISO/IEC 27001
- Collaborate with cross‑functional teams to define secure system architectures
- Conduct code reviews, threat modeling, and validation for security‑critical code
- Support the full firmware development lifecycle from requirements to testing and deployment

Qualifications

- Bachelor’s degree in Electronics, Embedded Systems, Computer Engineering or related field




- 5+ years of experience in embedded firmware development using C (bare metal or RTOS)
- Strong knowledge of public‑key cryptography and secure protocols (TLS/DTLS)
- Experience with secure microcontrollers/SoCs (e.g. ARM TrustZone, ATECC)
- Familiarity with firmware validation, debugging tools, and version control systems
- Bonus: Experience with secure OTA updates, device authentication, and anti‑tampering mechanisms

Benefits

- Mission‑critical project with general impact in smart infrastructure
- Collaborate with highly skilled and innovative engineers
- Professional and supportive environment
- Opportunities for continuous learning in embedded security and IoT

Seniority Level

Senior

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📌 Senior Firmware Engineer (Monterrey)
🏢 Xylem
📍 Monterrey