Jobs in the United States

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Added 1 min ago
MS
Electrical Engineer - Philadelphia, PA
Military Spouse Jobs & VetJobs
United States
- $65,200 to $101,950 USD / year
This position is for a detail-oriented engineer who will serve as the Technical Data Package (TDP) lead for Machinery Control Systems (MCS), Repair Station Consoles (RSC), and Engine…
Added 1 min ago
MS
Control Systems Engineer - Philadelphia, PA
Military Spouse Jobs & VetJobs
United States
- $65,200 to $101,950 USD / year
…life-cycle savings. Noblis MSD is looking to hire a Control Systems Engineer for a long-term multi-year contract. This position is onsite at the Philadelphia Navy Yard. Future potential for…
Added 1 min ago
TT
Technical Product Manager
True Talent Solutions Partners
New York, NY
- $175,000 to $275,000 USD / year
- Five to fifteen years of experience as a product manager, engineer, or founder building B2B software.
Added 1 min ago
TT
Senior Software Engineer, Distributed Systems (Core)
True Talent Solutions Partners
Remote, United States
- $180,000 to $320,000 USD / year
Join a backend engineering team building and improving the distributed systems behind a data syncing platform. You will help move large volumes of customer data reliably and efficiently…
Added 1 min ago
TT
Founding Software Engineer
True Talent Solutions Partners
San Francisco, CA
- $200,000 to $250,000 USD / year
Join an early-stage team building AI-powered software for enterprise procurement and supply chains. As a founding engineer, you will help shape the product and engineering direction while…
Added 1 min ago
TT
Senior Software Engineer, Customer Studio Backend
True Talent Solutions Partners
Remote, United States
- $180,000 to $320,000 USD / year
Join a product-focused backend team building a no-code platform that helps customers activate data directly from their warehouses. You will shape a fast-growing product area, contributing…
Added 1 min ago
UG
Principal AI/ML Engineer Remote Nationwide or Office-Based in MN/DC/NJ
UnitedHealth Group
Eden Prairie, MN
- $164,600 to $282,200 USD / year
…make the health system work better for everyone. From advanced data analytics and AI to cybersecurity, we use innovative approaches to solve some of health care's most complex challenges.…
Added 1 min ago
UG
Senior Data Engineer
UnitedHealth Group
Eden Prairie, MN
- $91,700 to $163,700 USD / year
…outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers,…
Added 1 min ago
GI
11years Cloud Architect - Onsite
GoIntellects Inc.
Washington, DC
- $81 to $90 USD / hour
…systems and networks, including hybrid connectivity to OCTO data centers, hub-and-spoke networking, private endpoints, firewall integration, and identity integration with Microsoft Entra…
Added 2 mins ago
MD
Senior Software Engineer
Molecular Devices, LLC
Downingtown, PA
- $115,000 to $125,000 USD / year
The Senior Software Engineer is responsible for developing and maintaining production software that supports Molecular Devices' life science instruments, including licensing applications,…
Added 2 mins ago
AE
Engineer Senior - Engineer Principal
American Electric Power
Louisa, KY
- $116,255 to $151,132 USD / year
Technical Expertise: Exhibits journey level proficiency plus advanced knowledge that enables the engineer to serve as a leader within the assigned organization. Keeps abreast of new…
Added 3 mins ago
Senior Board Product Development Engineer
NVIDIA Corporation
CA · Santa Clara, CA · Santa Clara
We are seeking a creative and experienced Senior Board Product Development Engineer to join our Operations Engineering team. This role is pivotal in ensuring the successful release of…
Added 3 mins ago
Senior Software Engineer, Cloud Platform
NVIDIA Corporation
Remote, United States
…provisioning to build a multi-tenant infrastructure. As a software engineer, you will work with other software engineers, product architects, and product managers as a collaborative team to…
Added 3 mins ago
Senior Electrical Product Development Engineer
NVIDIA Corporation
Remote, United States
We are now looking for a Datacenter Product Engineer! NVIDIA Corporation is a world leader in visual computing technology. The GPU, which the company invented, serves as the visual cortex…
Added 3 mins ago
Senior Software Engineer, NVIDIA Kubernetes
NVIDIA Corporation
Remote, United States
As a Senior Software Engineer on the Management Plane area, you will own building and delivering software that creates, upgrades, scales, and operates Kubernetes clusters on…
Added 3 mins ago
Plumbing Engineer
CMTA, Inc
Lexington, KY
CMTA, a Legence company, is seeking a Plumbing Engineer with a bachelor’s degree in engineering or a Plumbing Designer with 5+ years of experience in plumbing design. This person will work…
Added 3 mins ago
Software Engineer - Product (Technical Leadership)
Meta
Frankfort, KY
Software Engineer - Product (Technical Leadership) Responsibilities:
Added 3 mins ago
Senior Platform Engineer - NBA
Humana
Frankfort, KY
The Senior Platform Engineer keeps the entire NBA platform healthy, reliable, and maintainable for the long term. You develop a working understanding of every layer of the technology stack…
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Senior Full Stack Engineer - NBA
Humana
Frankfort, KY
The Senior Full Stack Engineer builds and evolves the NBA platform's Action Library and Command Center experience, the operational system used by business and program teams to create,…
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Sr. Application Security Engineer
American Express Global Business Travel
Frankfort, KY
We are seeking an experienced Senior Application Security Engineer to join our team in the corporate travel industry. This remote position requires a unique blend of application development…
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Principal AV Behavior Safety Engineering Lead
General Motors
Frankfort, KY
The AV Safety Strategy and Assurance team is seeking a hands‑on Principal engineer with extensive experience in the end‑to‑end development lifecycle of autonomous vehicle behaviors, from…
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Senior Decision Intelligence Engineer
Humana
Frankfort, KY
The Senior Machine Learning Engineer, Decision Intelligence is a hands-on individual contributor responsible for building, deploying, and operating ML and decisioning pipelines for the NBA…
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Senior Cybersecurity Engineer
Humana
Frankfort, KY
The Senior CyberSecurity Engineer develops and tests information security tools, applications, and system solutions deployed in Humana. Oversees the design engineering and testing processes…
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Tester (Remote)
GovCIO
Frankfort, KY
GovCIO is currently hiring a Software Development Engineer in Test (SDET), Test Engineer, to join cross-functional product teams building and modernizing federal digital services on AWS…
Added 3 mins ago
Safety Data Analysis Engineer – AV Operational Safety and Issue Response (GPSSC)
General Motors
Frankfort, KY
The AV Safety Engineering Analytics team is seeking an experienced Safety Data Analysis Engineer to provide engineering support for AV Operational Safety and Issue Response. This is a…

CScale

Optical Engineer - Optical Interconnects

Palo Alto, CA, United States

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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.

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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

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