[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Nokia jobs](https://jobs.opennash.com/companies/nokia/) · [Search jobs](/search/) Nokia · Germany # Principal Coherent Systems Engineer Germany Hybrid Senior individual contributor Operations Listed on Nokia’s official careers site. Posted August 14, 2026. Check that it is still open and apply there. [Apply on Nokia’s careers site →](https://fa-evmr-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/38381) [OpenNash Jobs](https://jobs.opennash.com/) / [Nokia](https://jobs.opennash.com/companies/nokia/) / Principal Coherent Systems Engineer ## Job description Nokia is seeking a Coherent Optical System Architect to join our Optical Systems Group (OSG). The engineer will be responsible for contributing to the development of leading coherent MODEMs based on Infinera's next-generation coherent photonic integrated circuits (PICs). The ideal candidate will be prepared to work with early prototype hardware to get an initial look at product performance and provide rapid feedback to the PIC and high-speed analog ASIC teams. Performance characterization will include MODEM SNR, OSNR tolerance, systematic breakdown of the MODEM impairment penalties, sensitivity studies and model alignment. OSG works closely with many parts of the company and the candidate should anticipate frequent interactions with the coherent ASIC team on coherent signal processing issues and ADC/DAC ENOB, with optical, high-speed analog ASIC, and systems engineering teams. A key component of this role is the ability to understand and make tradeoffs between optical, electrical, and digital capabilities in order to optimize the overall system performance. ## Responsibilities Nokia’s next generation communications platform will be defined, developed, characterized, and optimized on your optical testbed. Your experimental data will fuel our design, starting with off-the-shelf components, evolving to prototype PICs, and eventually taking the form of the final integrated embedded systems or coherent pluggable modules. This requires ownership of the optical design, optimization methods, and stabilization techniques. One particular component of your research will be pushing our optical systems to higher baud rates. Frequently used diagnosis capturing coherent waveforms on a high-speed oscilloscope and performing coherent signal processing on waveforms, and measuring bit-error rate performance in the presence of optical noise and other impairments. Of particular interest will be pushing to faster baud rates. Through frequent interaction with the control & firmware teams, you will assist in optimizing performance-critical aspects such as powerup self-calibration, receive acquisition, real-time performance monitoring, and in-service performance optimization. These algorithms will be tested during the implementation stage to ensure they operate properly. Results will be presented internally and documented as electrical and optical performance specifications for next-generation platforms. Some customer-facing interactions may be required, such as field trials using prototype equipment, or debugging unusual field failures that cannot be resolved through the normal customer service process. ## Qualifications PhD. in Electrical Engineering or Applied Physics with minimum of 3 years of industrial experience in optical communications, photonics, high speed electronics or systems. Fundamental understanding of optical communication systems, DWDM transmission systems, fiber transmission penalties, photonic integrated components, electronic (integrated) circuits, and signal analysis and processing. Hands-on experience working with system-level optical communication hardware and components. Extensive understanding of coherent communications systems, including experience with QPSK, 16QAM, and 64QAM, as well as coding and forward error correction algorithms. Experience characterizing high-speed RF and mm-wave interconnects, amplifiers, and components. Characterization of RF/mm-wave systems, such as S parameter measurements, jitter measurements, and ADC/DAC performance and ENOB Hands-on experience with high-speed optical and electrical test, and measurement equipment control and data acquisition. Programming experience in Matlab, Python, VB.net, or C desired. ## At a glance - Posted by the employer: Aug 14, 2026 - First seen by OpenNash: Oct 13, 2026 - Last checked: Oct 20, 2026 - Listed for: 67 days - Location: Germany - Work arrangement: Hybrid[Apply on Nokia’s careers site →](https://fa-evmr-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/38381) ## More jobs at Nokia ### [High-Speed Converters Test and Validation Engineer](https://jobs.opennash.com/companies/nokia/jobs/b8e13ebf2e3b7c91391b/) Germany ### [Classified Information Security Manager (Geheimschutz)](https://jobs.opennash.com/companies/nokia/jobs/e2824e76923e9612f5fc/) Germany ### [High-Speed Converters Test and Validation Lead](https://jobs.opennash.com/companies/nokia/jobs/8960cf970c4baaf61511/) Germany ### [High-Speed SERDES Standards Specialist](https://jobs.opennash.com/companies/nokia/jobs/5a040a8695be9d3a39b8/) Germany ### [Mechanical Engineer](https://jobs.opennash.com/companies/nokia/jobs/d638491f3c31e60ddc48/) Germany ## Similar jobs at other companies ### [Principal DSP Designer – Coherent Optical Transmission Systems - Acacia](https://jobs.opennash.com/companies/cisco-systems/jobs/da897d57fb51834a4ce0/) Cisco Systems · Ottawa, Ontario, Canada ### [Principal Power Systems Engineer](https://jobs.opennash.com/companies/ntt/jobs/2571f20eca7d249d0719/) NTT · London, United Kingdom ### [Senior/Principal Product Systems Engineer](https://jobs.opennash.com/companies/microsoft/jobs/c8554f8332bf5fab3098/) Microsoft · United Kingdom, Cambridgeshire, Cambridge ### [Principal Software Engineer - Distributed Systems](https://jobs.opennash.com/companies/microsoft/jobs/35d43d446a345f9fdc6c/) Microsoft · Canada, British Columbia, Vancouver ### [Principal Systems Engineer - Stores Ejection](https://jobs.opennash.com/companies/eaton/jobs/797f018de38e8a6a33d8/) Eaton · Cheltenham, GBR [Operations jobs](/functions/operations/) OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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