Jobs in the United States

25+ jobs

Save this search

Added 9 mins ago
Electronics Engineer III
Lockheed Martin
Titusville, FL · Titusville
As a Senior Electronics Engineer, you will perform Engineering functions in support of the US Navy's Fleet Ballistic Missile (FBM) D5 Life Extension (D5LE) Avionics/Test Missile Kit (TMK)…
Added 9 mins ago
Systems Engineer Sr - E3
Lockheed Martin
Littleton, CO · Littleton
…system models that drive requirements traceability, performance simulation, and lifecycle management. Work is performed with moderate independence, with guidance available for complex or…
Added 18 mins ago
Mechatronics Engineer 3
Lam Research
Fremont, CA · Fremont
Proven analytical skills including modeling analyses (simulations) using FEA applications such as Creo Simulation, COMSOL, etc.
Added 24 mins ago
Systems Design Engineer - Bioengineering
Thermo Fisher Scientific
Pleasanton, CA
The successful candidate will bring modern capabilities in computational modeling, automation, data science and AI. Working with experienced scientists and engineers, this person will…
Added 24 mins ago
Engineer/Principal Engineer RF Microwave/Mixed Signal Design Engineer
Northrop Grumman
Baltimore, MD · Baltimore
…and packaging approaches, RF chain analysis, electromagnetic simulation, data collection and analysis, and other modeling…
Added 24 mins ago
Principal/Sr. Principal RF Microwave/Mixed Signal Design Engineer
Northrop Grumman
Baltimore, MD · Baltimore
…and packaging approaches, RF chain analysis, electromagnetic simulation, data collection and analysis, and other modeling…
Added 26 mins ago
Modeling Simulation & Analysis Engineer (Level 2)
Northrop Grumman
El Segundo, CA · El Segundo
Northrop Grumman Aeronautics Systems has an opening for a Modeling Simulation and Analysis Engineer to join our team of qualified, diverse individuals within our Systems Engineering…
Added 26 mins ago
Modeling Simulation & Analysis Engineer 3 or 4 (Principal or Sr. Principal Level)
Northrop Grumman
El Segundo, CA · El Segundo
Northrop Grumman Aeronautics Systems has an opening for a Modeling Simulation and Analysis Engineer (Principal or Sr. Principal Level) to join our team of qualified, diverse individuals…
Added 26 mins ago
Industrial Engineer / Principal Industrial Engineer
Northrop Grumman
Palmdale, CA · Palmdale
Experience with improving manufacturing workflow using optimization, modeling, or simulation methods
Added 27 mins ago
Principal Engineer Industrial
Northrop Grumman
Edwards AFB, CA · Edwards AFB
Experience with improving manufacturing workflow using optimization, modeling, or simulation methods
Added 47 mins ago
Data Engineer
KBR Wyle Services, LLC
Camarillo, CA
As a Data Engineer, you will be a critical part of the team that is responsible for enabling the development of data-driven decision analysis products through the innovative application,…
Added 1 hour ago
Mechanical/Test Engineer III
Arcfield
Colorado Springs, CO
The Mechanical/Test Engineer will perform shock response testing for thermal protection system materials through impact, radiation, and thermal loading environments. The successful…
Added 1 hour ago
Mechanical/Structural Engineer III
Arcfield
Colorado Springs, CO
The Mechanical/Structural Engineer will perform hostile environment system qualification analyses. The successful candidate will perform a wide range of tasks spanning from CAD development…
Added 1 hour ago
JH
2027 PhD Graduate - Electronic Warfare Engineer/Analyst
Johns Hopkins Applied Physics Laboratory
Laurel, MD
- $105,000 USD / year
Would you like to work on RF systems, electronic warfare, communications, software, modeling and simulation, or test and evaluation?
Added 1 hour ago
JH
Software Engineer
Johns Hopkins Applied Physics Laboratory
Laurel, MD
- $85,000 USD / year
We are seeking experienced Software Engineers to join us to design, develop, and scale advanced modeling and simulation capabilities. From Advanced Surface Navy radars to Land-based Cruise…
Added 2 hours ago
Sr Electrical Engineer
Sierra Nevada Corporation
Lone Tree, CO
Exposure to circuit modeling, simulation, and analysis.
Added 2 hours ago
S
Principal Packaging Engineer
Skyworks
Richardson
- $122,900 to $255,200 USD / year
Lead modeling, simulation, characterization, and validation activities across device, package, and subsystem levels.
Added 2 hours ago
KI
Simulation Engineer, Thermofluid Systems
Karman Industries
Los Angeles, CA
- $70,000 to $160,000 USD / year
We are seeking a highly motivated Simulation Engineer to join our core engineering team. In this role, you will be responsible for developing, running, and analyzing high-fidelity…
Added 2 hours ago
Senior Systems Architect, Precision Stage V (E5)
Applied Materials, Inc
Santa Clara, CA
As a Mechanical Engineer, you’ll leverage your strong foundation in physics, mathematics, and materials science to process and resolve mechanical problems, design and implement custom…
Added 2 hours ago
Summer 2027 Electrical Radio Frequency Engineer Intern- Master's/PhD (Santa Clara, CA)
Applied Materials, Inc
Santa Clara, CA
Support experimental data acquisition and processing, and some simple to moderate data modeling.
Added 2 hours ago
Sr. Staff Systems Engineer, Perception-Planner Risk
Waymo
Mountain View, CA
…over 100 million miles on public roads and tens of billions in simulation across 15+ U.S.…
Added 2 hours ago
Electronic Warfare Modeling & Simulation Engineer
Insight Global
Beavercreek, OH
An employer in the Dayton, Ohio area is seeking an Electronic Warfare Modeling & Simulation Engineer for a direct-hire opportunity. This individual will support the development of advanced…
Added 2 hours ago
Junior Modeling and Simulation Engineer
Radiance Technologies, Inc.
DAYTON, OH
…work and succeed. We are searching for a talented software engineer to join our Modeling and Simulation (M&S) development team. We are looking for a junior developer to work with a diverse…
Added 2 hours ago
Systems Test Integration Engineer
DCS CORPORATION
Dayton, OH
Added 2 hours ago
Modeling and Simulation Engineer
BOOZ, ALLEN & HAMILTON, INC.
Wright-Patterson AFB, OH
As a systems engineer on our team, you'll have the chance to design, assess, and evaluate combat weapon systems using computer-based analytical tools, including the Digital Integrated Air…

CScale

Optical Engineer - Optical Interconnects

Palo Alto, CA, United States

Apply About employer

Applications open in a new tab.

Job details

Posting language: English
Posted: Oct 30, 2026

Original job description

CScale is building the interconnect for gigawatt-scale AI. As AI scale-up moves toward deployments spanning thousands of accelerators and dozens of racks, the network needs to deliver high bandwidth, predictable low latency, and continuous communication. CScale is building integrated optical interconnect designed for this new scale, enabling accelerators to work together like a single, much larger computer. But at this scale, performance is only part of the challenge. Optical failures are inevitable, and the system needs to keep running. CScale is designing the interconnect for continuity. Lasers will fail. Compute shouldn’t. The ambition is simple: Build AI interconnect you can take for granted. CScale came out of stealth in September 2026 with $145 million in Series C funding, bringing total funding to $188 million.

We are seeking an Optical Engineer to take technical ownership of optical subsystems connecting lasers, photonic integrated circuits (PICs), and fiber arrays, with a focus on free-space optical coupling. You will drive development from requirements and architecture through optical design, integration, validation, qualification, and high-volume manufacturing.

This role offers broad scope across the optical system. You will define / improve optical architectures and performance budgets, evaluate design trade-offs, shape component and interface requirements, and lead the integration and validation of complete optical subsystems. Working closely with laser, PIC, electrical, mechanical, thermal, packaging, test, and manufacturing teams, you will contribute to broader product architecture and translate system requirements into practical, production-ready designs.

This is a hands-on role in a startup environment. You will move between modeling, laboratory development, packaging and alignment work, supplier engagement, and production problem-solving. Your responsibility extends through manufacturing ramp, with success measured by optical performance, reliability, manufacturing yield, throughput, and cost at volume.

Key Responsibilities

Optical Architecture and System Requirements

Own the optical subsystem architecture across laser delivery, PIC coupling, free-space optical elements, and fiber-array interfaces. Evaluate architecture alternatives and contribute to product-level decisions affecting performance, integration, and scalability.
Translate product requirements into design target, manufacturing spec, interface definitions, and operating margins. Address coupling efficiency, polarization, wavelength dependence, reflections and optical feedback, channel uniformity, crosstalk, and thermal stability as applicable.
Lead design trade-offs across optical performance, size, thermal behavior, alignment tolerance, reliability, assembly complexity, production throughput, and cost. Document decisions and validate the assumptions behind them.
Work with laser and PIC designers, and packaging engineers to define source characteristics, optical modes, coupling structures, channel geometry, and interface requirements that support the overall optical architecture.
Work with global team extending into 4 different time zones as a joint effort driving forward product development.

Integration, Validation, and Reliability

Build, align, characterize, and debug prototypes and integrated optical assemblies. Lead investigation of performance limitations across the complete optical path.
Collaborate with mechanical, thermal, and packaging engineers on optical datums, component placement, alignment strategies, attachment methods, and assembly sequences. Address bonding-induced shifts, thermomechanical drift, stress, and contamination risks.
Own optical verification plans, measurement methods, and acceptance criteria. Validate performance across channels, wavelengths, operating conditions, and expected component and assembly variation.
Work with system and electrical teams to connect optical measurements to overall link performance and operating margins.
Partner with reliability engineers to define relevant qualification conditions, evaluate optical stability and degradation, and close failure mechanisms through design or process improvements.

High-Volume Manufacturing and Production Delivery

Incorporate manufacturability, assembly automation, and testability into the architecture and design process. Develop active, passive, or hybrid alignment approaches with packaging, process, and automation teams.
Define optical assembly tolerances, process windows, metrology requirements, and production test coverage. Establish acceptance limits and ensure measurement repeatability, reproducibility, and correlation between development and factory test.
Drive optical readiness for pilot builds, qualification, and production ramp. Use experimental and statistical data to improve yield, channel consistency, alignment and test cycle times, throughput, and unit cost.
Work with manufacturing partners to convert optical designs into repeatable assembly and test processes. Resolve optical performance issues across component lots, equipment, and production conditions.
Release and maintain optical specifications, interface definitions, tolerance budgets, test procedures, and validation reports. Support controlled design and process changes, including assessment of their impact on performance and qualification.
Maintain technical ownership of optical performance through production ramp and sustained manufacturing, using production and field data to guide corrective actions and future designs.

Technical Leadership and Collaboration

Serve as the technical owner for the optical subsystem, aligning cross-functional teams around requirements, design decisions, development milestones, and risk mitigation.
Work directly with optical component suppliers and manufacturing partners to establish specifications, evaluate capabilities, qualify components and processes, and resolve technical issues.
Communicate trade-offs and recommendations clearly through design reviews, technical documentation, and data-driven discussions.
Contribute to future optical architectures and product roadmaps based on system needs, technology opportunities, and lessons from manufacturing.

Qualifications

Ph.D. preferred in Optical Engineering, Physics, Electrical Engineering, or a related field, or equivalent practical experience.
Strong understanding of free-space optics, laser beam propagation, Gaussian optics, fiber and waveguide mode coupling, polarization, and optical tolerancing.
Demonstrated experience designing, integrating, and validating optical subsystems involving lasers, photonic devices, precision optics, or fiber coupling.
Ability to translate system requirements into optical architectures, component specifications, performance budgets, and measurable validation criteria.
Proficiency with relevant optical design and simulation tools, such as Zemax OpticStudio, CODE V, or equivalent, and programming or analysis tools such as Python or MATLAB.
Strong hands-on skills in optical alignment, characterization, test development, and systematic troubleshooting.
Experience bringing optical hardware into production, including involvement in manufacturing transfer, pilot builds, qualification, or production yield improvement.
Ability to evaluate optical performance in the context of mechanical tolerances, thermal behavior, materials, assembly processes, and reliability.
Strong technical ownership and cross-functional communication, with the flexibility to address both system-level decisions and detailed implementation challenges in a startup environment.
Experience delivering optical interconnects, photonic engines, optical transceivers, laser modules, or related precision optical products into high-volume manufacturing.
Experience with multichannel laser-to-PIC or PIC-to-fiber-array coupling, silicon photonics, or other integrated photonic platforms.
Experience with automated optical alignment, passive alignment features, machine vision, precision assembly, or production optical testing.
Familiarity with design of experiments, measurement system analysis, statistical process control, and structured failure analysis.
Experience working with optical component suppliers, equipment vendors, and contract manufacturing partners.
A record of leading technical decisions across disciplines and carrying those decisions through implementation and production.

What Success Looks Like

A well-defined optical architecture with clear interface requirements, validated performance budgets, and documented design decisions.
Integrated optical hardware that meets performance and reliability requirements across operating conditions and expected manufacturing variation.
Correlated models and measurements that explain performance, identify sensitivities, and support predictable design improvements.
Qualified assembly and test processes that meet agreed yield, throughput, cycle-time, and cost targets.
Successful delivery from prototypes through pilot builds into sustained high-volume production, with optical issues resolved and improvements carried into subsequent product generations.

Compensation includes a base salary of $150,000–$250,000 and equity in CScale. Final offers depend on experience, market conditions and location.

Apply About employer

More about this job

Skills

Packaging
Problem solving
Product comprehension
Assembly
Design process
Test procedures
Leadership
Collaboration
Documentation
Optical engineering
Electrical engineering
Zemax
Python
The MathWorks MATLAB
Troubleshooting
Communication skills
Photonics
Statistical process control

Report this job