Sr Principal TIA Designer

Job Description

Job Description \n
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\nJoin Nokia's advanced photonics and semiconductor design team, developing next-generation analog ICs for high-speed optical communication systems. In this role, you will lead the design of multi-tens of GHz Transimpedance Amplifiers (TIAs) for coherent long-haul, metro, and PAM4 data center applications, leveraging cutting-edge SiGe BiCMOS and CMOS technologies. You'll play a key role in delivering innovative solutions that enable faster, more efficient data transmission across data centers, telecommunications networks, and emerging AI-driven infrastructure.\n
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\nNION2026\n
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Responsibilities \n
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• Lead the architecture, design, simulation, verification, and silicon bring-up of ultra-high-speed Transimpedance Amplifiers (TIAs) for coherent optical and PAM4 data center applications.
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• Translate system and chip-level requirements into robust analog circuit architectures and detailed transistor-level designs.
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• Design and optimize low-noise, high-linearity broadband analog circuits for optical receiver front ends.
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• Develop and validate supporting analog functions, including AGC loops, CTLEs, voltage regulators, bandgaps, and data converter interfaces.
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• Drive package and system-level integration, ensuring optimal signal integrity and performance.
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• Perform silicon characterization, debug, and correlation of measurement results against simulation models.
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• Collaborate closely with layout, system, DSP, packaging, and product engineering teams throughout the development cycle.
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• Lead technical reviews, contribute to design methodology improvements, and ensure successful first-pass silicon execution.
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• Mentor and guide junior analog designers, fostering technical excellence within the team.
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• Create and maintain high-quality technical documentation, design reports, and specifications.
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• Extensive experience designing high-speed TIAs for coherent optical communication systems and/or PAM4 data center transceivers.
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• Strong expertise in analog and mixed-signal IC design using SiGe BiCMOS and CMOS technologies.
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• Deep understanding of transistor-level circuit design, device physics, noise analysis, and feedback/control loop stability.
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• Proven experience in one or more of the following areas: \n
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  • Optical receiver front-end design
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  • AGC loop implementation
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  • CTLE design
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  • High-precision analog circuits (bandgaps, regulators, ADC/DAC interfaces)
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  • Package and system-level integration
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• Proficiency with industry-standard EDA tools, custom analog layout techniques, and electromagnetic (EM) simulation tools.
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• Demonstrated success delivering silicon from concept through production.
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• Hands-on experience with lab measurement, debugging, and performance validation of high-speed ICs.
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• Strong leadership, problem-solving, communication, and collaboration skills.
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• Ability to work effectively in a fast-paced, multidisciplinary global engineering environment.
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