Acacia designs, develops, manufactures and sells intelligent transceivers using sophisticated signal processing and photonic integration for the 100G, 400G and 1.2T bit speed fiber optic transmission market deployed in data center, metro, long-haul and ultra-long haul telecommunication networks. We are looking for experienced enthusiastic people with high energy and a team attitude who want to work at the forefront of fiber optic transmission subsystems.

Job Description:

We are looking for an expert in modelling of coherent optical communications systems. The DSP Engineer will become the owner of Acacias system modelling environment, helping us achieve fast, user-friendly, automated and ultra-accurate system modelling. A key part of the work is development of accurate models adequate for system modelling for components such as RF amplifiers, silicon optics modulators and detectors, ADC/DAC, and lasers working closely with the colleagues designing these parts. In addition, the DSP Engineer will help enhance our simulation environment to improve efficiency and ease of use, drive the development and implementation of regression tests of our models and help debug and analyze if these tests show changes in behavior.

Depending on experience and interest, the DSP Engineer may also contribute to DSP/FEC algorithm development as well as bring-up, debugging, and optimization of ultra high speed optical transceivers.

Skills and experience:

The essential requirements for this job include a good overall understanding of optical communications systems, a deep understanding of modelling of communications systems including time and frequency domain representation of signals, discrete-time representation of periodic and aperiodic analogue signals, and excellent C++ programming skills. Given the importance of accurate system modelling, we also believe that perfectionism and great attention to detail are essential. Knowledge of DSP algorithms, SW development methodologies including revision control, and direct experience with coherent transceivers will be a plus and help you ramp up faster in this role. While we do not have rigid requirements to education, we think a Ph.D. or masters degree in physics, math, or electrical engineering is a good background for this job. Acacia work philosophy Acacia believes in a friendly, collaborative work style where we work together to create and implement great ideas, peer-review designs to eliminate mistakes, and balance workload.

The work location is our corporate headquarters in Maynard, MA or our office in Holmdel, NJ.

Essential Functions:

• Develop C++ models of analog RF and optical components

• Evaluate system performance with these models

• Code in C/C++ to maintain and enhance existing simulation environment

• Debug simulation failures and expand Acacias tool base to increase efficiency

• Create Python scripts to enhance performance testing platform Minimum Qualifications:

• Excellent C++ and Linux skills

• Deep understanding of modelling of communications systems

• Digital communications and digital signal processing knowledge

• Experience with optical communications systems

• Attention to detail Highly Desired Skills:

• Motivated self-starter willing to explore and find solutions

• Experience with optical coherent transceivers

• Fluency with scripting in Python, Matlab

• Experience with version control systems (we use SVN and Perforce)

#WeAreCisco, where each person is unique, but we bring our talents to work as a team and make a difference powering an inclusive future for all.

We embrace digital, and help our customers implement change in their digital businesses. Some may think were old (36 years strong) and only about hardware, but were also a software company. And a security company. We even invented an intuitive network that adapts, predicts, learns and protects. No other company can do what we do you cant put us in a box!

But Digital Transformation is an empty buzz phrase without a culture that allows for innovation, creativity, and yes, even failure (if you learn from it.)

Day to day, we focus on the give and take. We give our best, give our egos a break, and give of ourselves (because giving back is built into our DNA.) We take accountability, bold steps, and take difference to heart. Because without diversity of thought and a dedication to equality for all, there is no moving forward.

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