RF principal engineer at Sagemcom in Richardson, TX

Why join our Dallas R&D team?

* Work on next generation residential gateways and Wi Fi technologies deployed worldwide

* Be part of a global R&D organization with strong local ownership and decision-making

* Collaborate with hardware, RF, software, mechanical, and chipset partners

* See your designs go from concept to mass production

* Thrive in a fast paced, innovative, and multicultural environment

Reporting to the HW Manager, you act as RF technical authority for wireless products developed in our US R&D center. You drive RF architecture choices, ensure high-level RF performance, and secure regulatory compliance across the full product lifecycle, from early concept to mass production and field deployment.

Responsibilities:

* RF Architecture & Leadership

* Act as RF expert and reference for the R&D organization.

* Define and validate end-to-end RF system architectures (Wi-Fi, Cellular, ISM, DECT) for gateways and extenders.

* Drive trade-offs (performance, cost, complexity, regulatory margin) and support product roadmap decisions.

* Review and challenge RF designs from internal teams and external partners (ODM, chipset vendors, antenna suppliers).

* Product Definition & Development

* Define RF specifications aligned with customer needs, standards, and FCC

regulations in collaboration with HW, mechanical, and system teams.

* Lead RF development including feasibility studies, RF/antenna architecture definition, schematic reviews, antenna optimization, and PCB layout guidance.

* Ensure robust RF integration within constrained mechanical environments.

* Define and apply EMC design rules (layout, grounding, shielding, filtering) at system and product levels.

* RF Validation, Calibration & Performance

* Define advanced RF validation strategies: conducted/radiated tests, coexistence, immunity, TRP/TIS, EVM, sensitivity, throughput.

* Develop calibration strategies: lab characterization, manufacturing flows, field tuning mechanisms.

* Perform EMC pre-compliance to anticipate FCC certification.

Identify and mitigate EMI sources (power switching, high-speed interfaces, RF/digital coupling, antenna interactions).

* Work with PCB, mechanical, and power teams to implement cost-effective solutions.

* Ensure RF performance consistency across production volumes.

* Regulatory & Certification

* Lead radio certification strategy and execution (FCC, BT, Thread, regional approvals).

* Interface with test labs, certification bodies, and consultants.

* Anticipate regulatory changes and ensure early compliance.

* Cross-functional Collaboration

* Work closely with software, manufacturing, test, supply chain, and quality teams.

* Define and review RF manufacturing test specifications.

* Support production ramp-up and yield improvement.

* Field Support & Root Cause Analysis

* Lead RF performance investigations from field issues.

* Perform root cause

Profile

You hold a Master's degree or PhD in Electronics, Telecommunications, or

RF/Microwave Engineering.

You have at least 10 years of experience in the following areas:

* Strong expertise in RF and microwave system design

* Hands-on mastery of RF lab equipment:

◦ Spectrum analyzers

◦ Vector Network Analyzers (VNA) for S‑parameter measurements, impedance

matching, antenna characterization, and RF component validation.

◦ Signal generators

◦ Vector signal analyzers for modulated signal qualification (EVM, IQ, phase

noise, coexistence)

* Extensive experience in antenna characterization in anechoic chambers (microwave

bands).

* Advanced use of 2D/3D electromagnetic simulation tools (CST, HFSS or equivalent) for antenna and RF design.

* RF simulation tools (ADS, AWR, or equivalent)

* Wireless standards and technologies, including:

◦ Wi‑Fi 6 / Wi‑Fi 6E (802.11ax)

◦ Wi‑Fi 7 (802.11be)

◦ 4G (3GPP TS 36.xxx), 5G (TS 38.xxx) (sub-6GHz)

◦ ISM technologies (Bluetooth, Zigbee, Matter)

◦ DECT and related standards

◦ Coexistence mechanisms between multiple radios

* Software & Automation

◦ MATLAB, Scilab or equivalent for RF analysis and algorithm development.

◦ LabVIEW for RF test and measurement automation.

◦ Python for automation, data analysis, and test support.

Soft Skills

* Strong analytical and problem-solving mindset.

* Ability to communicate complex RF topics clearly to non-RF stakeholders.

* Comfortable working in a multi-disciplinary and international environment.

* Autonomous, proactive, and capable of driving technical decisions.

Benefits :

PTO

Medical

Dental

Vision

6% match 401k retirement

Pay: $140,000.00 - $165,000.00 per year

Benefits:

• 401(k)
• Dental insurance
• Health insurance
• Paid time off
• Vision insurance

Work Location: In person