Optical Line System / Optical Pluggable NE Software Development Engineer(JD attached)

Optical Line System / Optical Pluggable
NE Software Development Engineer

Embedded software | Hardware interfaces | Optical transport | Coherent systems

Mandatory gate: Strong embedded/software and hardware-interface skills, plus experience in either Optical Line Systems or Optical Pluggables. If both optical pillars are absent, do not shortlist.

Role Summary

Design, develop and integrate embedded software for Optical Line Systems, optical pluggables and coherent optical network elements. Work with optics, hardware, ASIC/FPGA, firmware, architecture and test teams to deliver reliable control, management, telemetry and hardware-interface software.

Key Responsibilities

• Develop embedded Linux, firmware, drivers, DAL/HAL and user-space software in C/C++.
• Implement I2C, SPI, MDIO, EEPROM, FPGA-register, sensor and pluggable interfaces.
• Develop EDFA/Raman control, APC/AGC, power balancing, alarms and protection logic.
• Support ROADM/WSS, flex-grid provisioning, spectrum allocation and optical path control.
• Develop CMIS/SFF-based pluggable management, DOM/DDM, state handling and firmware upgrade.
• Support coherent optics and performance analysis using QPSK/QAM, baud rate, BER/FEC and OSNR concepts.
• Perform system integration, optical-lab validation, automation and cross-layer debugging.

Required Skills

Priority	Area	Expected evidence
Mandatory	Software	C/C++, embedded Linux, firmware, drivers, DAL/HAL or system software.
Mandatory	Hardware interfaces	I2C, SPI, MDIO, EEPROM, FPGA registers and device-level debugging.
Mandatory*	Optical Line System	DWDM, EDFA/Raman, ROADM/WSS, OSNR, dispersion and optical transport.
Mandatory*	Optical Pluggables	SFP/QSFP/QSFP-DD/OSFP, ZR/ZR+, CMIS/SFF, DOM/DDM and module lifecycle.
Important	Coherent optics	QPSK, DP-QPSK, QAM, baud rate, BER, FEC, spectral efficiency and DSP awareness.
Preferred	Validation	OSA, VOA, optical switches, traffic generators, Python/pytest and product debugging.

* Either Optical Line System or Optical Pluggables is mandatory; both are preferred.

Minimum Qualifications

• Bachelor's or Master's degree in Electronics, Electrical, Computer Science, Telecommunications, Photonics, Optics, Applied Physics or a related field.
• 5+ years for engineer roles or 8+ years for senior roles in embedded, telecom, NE software, firmware or Linux-driver development.
• Demonstrated hands-on ownership of software modules, hardware interfaces, debugging and product delivery.

Shortlisting Decision Guide

Evidence	Decision
Software + hardware interfaces + OLS or pluggables	Shortlist
Only one optical pillar; strong software/hardware fundamentals	Compromise / train
Both OLS and optical-pluggable experience	Strong match
Neither OLS nor optical-pluggable experience	Reject
Generic networking or optics research without relevant product evidence	Reject / review only with proven mapping

Interview Evidence to Capture

• Specific C/C++ modules, Linux/firmware ownership and hardware-interface implementations.
• Hands-on OLS or pluggable product experience, including optical components and standards used.
• Understanding of coherent transmission, modulation, BER/FEC, OSNR and relevant DSP concepts.
• Examples of optical-lab validation, debugging, automation and delivered outcomes.