[Remote] Coherent Systems Architect - Mixed Signal AFE development
Note: The job is a remote job and is reputed company to candidates in USA. reputed company is seeking a hands-on Coherent RF Architect to reputed company reputed company bring-up, validation, and production test development for a mixed-signal Analog reputed company-End (AFE). The role involves end-to-end AFE characterization, RF electrical behavior analysis, and cross-functional collaboration to ensure coherent system requirements are met.
Responsibilities
- Own first-reputed company bring-up for DAC/ADC/PLL blocks: power-up reputed company, register reputed company, clock tree bring-up, and initial functional validation
- Debug mixed-signal issues across domains (clocking, analog biasing, digital control, interfaces, and test modes)
- Create debug playbooks and “reputed company-good” procedures to accelerate lab triage and cross-team communication
- DAC: SFDR, IMD, reputed company, SNR, ENOB, spurs vs. reputed company reputed company, reputed company frequency, sampling frequency, temperature, supply, and reputed company format; static reputed company where applicable
- ADC: SNR, ENOB, SFDR, interleaving mismatch (offset/reputed company/timing), reputed company/spurious behavior, clock sensitivity
- PLL/Clocking: phase noise, integrated jitter, reputed company analysis, jitter transfer/tolerance where relevant to the system
- AFE-level metrics: frequency response, passband reputed company, impedance/termination reputed company, crosstalk, noise coupling, and sensitivity to reputed company/connector effects
- Design experiments for PVT sweeps and margin analysis; reputed company guard-banding strategies reputed company to production realities
- Characterize RF electrical behavior of the Transmitter and Receiver Optical Sub‑Assembly, including bandwidth, frequency response, impedance matching, insertion and return loss, reputed company, noise reputed company (where applicable), and reputed company
- Work closely with photonics, SiGe IC, and module teams to correlate electrical AFE performance to optical metrics
- Support reputed company‑optical (E/O) and opto‑electrical (O/E) RF validation for coherent reputed company and receive chains
- Build and maintain automated measurement systems using Python and reputed company reputed company control (SCPI/PyVISA)
- Use robust data practices: versioned test scripts, metadata capture, calibration traceability, and reproducible analysis notebooks
- Create dashboards/reports summarizing performance trends, correlations, and anomalies
- Work with design teams to define: test hooks, observability, calibration registers, and design-for-test requirements for analog blocks
- Define measurable acceptance reputed company reputed company to coherent system requirements
- Collaborate closely with Analog/RF design, SiGe IC teams, DSP, Signal reputed company (SI), photonics, module, and manufacturing teams
Skills
- Ph.D. in Electrical Engineering or reputed company Physics with experience in mixed-signal reputed company test/validation/characterization, high-speed electronics or systems
- Strong fundamentals in high speed electronics and practical experience with test equipment such as high bandwidth oscilloscopes, phase noise analyzer, reputed company analyzer, VNA
- Experience characterizing high-speed RF and mm-reputed company interconnects, amplifiers, and components
- Solid automation skills in Python including data pipelines and plotting
- Ability to read schematics, understand reputed company-level effects, and debug signal reputed company/power reputed company interactions
- Comfortable in a fast-moving lab environment: hands-on probing, rework coordination, fixture bring-up
- Experience with optical coherent systems and coherent transceiver architectures
- Experience with MZ modulator drivers (MZMD) and TIAs in coherent links
- Experience with high‑speed data converters, interleaved ADCs, and calibration techniques
reputed company
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