Principal Coherent Systems Engineer

Turkish Aerospace Industries, Inc.; France; Hybride; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Medical insurance

Pension plan

Company car

Well-being programs

NERGs access

Mentors and coaching

Learning culture

Résumé du poste

Nokia is seeking a Coherent Optical System Architect to join our Optical Systems Group (OSG). You will lead optical design, characterization, and optimization for next-generation coherent MODems using PICs and high-speed electronics.

Responsibilities include operating the optical testbed, pushing baud rates, and presenting performance specifications. Collaboration with control/ firmware teams and potential customer-facing work are part of the role.

Qualifications

• PhD with minimum 3 years industrial experience in optical communications or photonics.
• Fundamental understanding of optical communication systems and DWDM.
• Hands-on experience with system-level optical hardware.
• Coherent communications experience with QPSK/16QAM/64QAM and FEC.
• Experience characterizing RF/mm-wave interconnects and ENOB.
• Experience with high-speed optical/electrical test equipment and data acquisition.
• Programming knowledge in Matlab, Python, VB.net, or C.

Responsabilités

• Own the optical testbed for next-generation coherent platforms and analyze experimental data.
• Push optical systems to higher baud rates and optimize design parameters.
• Capture coherent waveforms with high-speed instrumentation and assess BER under optical noise.
• Collaborate with control/firmware teams to optimize calibration, acquisition, monitoring.
• Document electrical and optical performance specs for future platforms.

Connaissances

Coherent optical

System-level hardware

QPSK 16QAM 64QAM

RF/mm-wave interconnects

ENOB measurements

High-speed test equipment

Matlab/Python/C/VB.net

Flexible working

Formation

PhD in Electrical Engineering or Applied Physics

Outils

Matlab

Python

VB.net

C

Description du poste

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.

Your 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.

Your skills and experience

• 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.
• Flexible working arrangements to support work–life balance
• A minimum of 90 days of Maternity and Paternity Leave, with the option to return to work within a year following the birth or adoption of a child (based on eligibility)
• Medical insurance plan and accident insurance to protect your health and well-being
• Pension plan, Time Saving Account, and Employee Saving Plan to support long-term financial security
• Company car based on eligibility
• Well-being programs to support your mental and physical health
• Opportunities to engage with Nokia Employee Resource Groups (NERGs), as well as access to mentors, coaches, and Employee Growth Solutions
• A learning culture that promotes continuous personal and professional growth – for your role and beyond

About Us

Advancing connectivity to secure a brighter world.

Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we’re advancing connectivity to secure a brighter world.

We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect.

If you’re interested in this role but don’t meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives, and experiences enrich our teams, and you may be just the right candidate for this or another opportunity.

At Nokia, we want every candidate to be able to perform their best. If you need any adjustments or support during the recruitment process, please let us know. All requests are treated confidentially.

Job Info

• Job Category Applied R&D
• Posting Date 09/24/2026
• Job Schedule Full time
• Job Type Experienced
• Job Identification 40407
• Locations Not in Nokia premises, FR Virtual, FR (Hybrid)

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