Retym, Inc

DSP Algorithm Engineer (System Level Testing)

Retym, Inc  •  Austin, TX (Onsite)  •  23 days ago
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Job Description

We are seeking a highly skilled Algorithm Engineer to develop, execute, and automate system-level tests for advanced coherent optical DSP In this role, you will work at the intersection of signal processing and optical communications to ensure the performance, robustness, and readiness of cutting-edge coherent DSP.

Requirements

Key Responsibilities

  • Design, implement, and maintain system-level test frameworks to validate and stress coherent DSP algorithms across the full signal chain.
  • Develop automated end-to-end test environments including channel models, impairments, hardware-in-the-loop elements, and performance analytics.
  • Create novel stress tests, corner-case scenarios, and fault-injection methodologies to uncover algorithmic weaknesses.
  • Work closely with algorithm developers to define test requirements, acceptance criteria, and performance metrics.
  • Analyze test results, identify root causes of performance degradation, and drive corrective actions.
  • Generate detailed documentation covering test design, simulation assumptions, and system-level performance trends.

Requirements

  • MSc in Electrical Engineering, Computer Engineering, or related field.
  • Experience with MATLAB DSP prototyping and translation C/Phyton.
  • 10+ years of experience in DSP design and modelling, preferably for communications or optical systems.
  • Strong proficiency in MATLAB / C++, with hands-on experience building modular simulation frameworks.
  • Solid understanding of digital communication systems (modulation, coding, equalization, carrier and timing recovery).
  • Knowledge of coherent optical communications
  • Excellent problem-solving and teamwork skills.

Nice to Have

  • Familiarity with fixed-point modelling and ASIC/DSP design flow
  • Exposure to FEC codes (LDPC, RS, OFEC) and their integration into DSP systems.
  • Understanding of jitter, PLL/CDR modelling, and mixed-signal impairments in simulations.

Why Join Us?

  • Be at the forefront of next-gen optical communication systems (800G, 1.6T, and beyond).
  • Collaborate with a multidisciplinary team of DSP, optics, and hardware experts.
  • Influence architecture decisions by providing critical simulation insights.
  • Opportunity for career growth in both DSP algorithm design and system architecture
Retym, Inc

About Retym, Inc

AI is transforming industries at an unprecedented scale - but today’s data center infrastructure wasn’t built to keep up. As AI workloads grow more complex and data volumes double every two years, connectivity - not compute - has become the bottleneck.

Retym is solving this challenge by delivering next-generation Coherent DSP solutions that provide high-performance, low-latency connectivity for AI infrastructure and data center interconnects.

We are a semiconductor company driven by innovation, bringing together a world-class team of chip designers, optical networking experts, and leading investors to rethink how data moves in the AI era. Our purpose-built DSP technology delivers:

Scalable, high-bandwidth interconnects for AI-driven data centers

Power-efficient, high-performance networking that removes bottlenecks

A coherent DSP provider that gives module makers more control and builds toward a more open, vibrant ecosystem

With hyperscalers deploying AI across multiple locations and AI infrastructure requirements rapidly evolving, Retym is building the connectivity backbone for the future of AI.

The future of AI isn’t just about compute - it’s about how we move data.

Together, we are building a novel semiconductor technology that will transform the datacenter and telecommunications industries.

Industry
Hardware & Semiconductors
Company Size
51-200 employees
Headquarters
Cupertino, CA
Year Founded
2021
Website
retym.com
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