Principal Jobs at Astera Labs with Visa Sponsorship
Principal jobs at Astera Labs sit at the intersection of high-speed connectivity architecture and semiconductor systems innovation. Astera Labs has a clear track record of sponsoring international talent across multiple visa categories for senior technical contributors, making it a serious option if you're targeting Principal-level work in the Electronics and Hardware space.
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Get Access To All JobsINTRODUCTION
Astera Labs (NASDAQ: ALAB) provides rack-scale AI infrastructure through purpose-built connectivity solutions. By collaborating with hyperscalers and ecosystem partners, Astera Labs enables organizations to unlock the full potential of modern AI. Astera Labs’ Intelligent Connectivity Platform integrates CXL®, Ethernet, NVLink, PCIe®, and UALink™ semiconductor-based technologies with the company’s COSMOS software suite to unify diverse components into cohesive, flexible systems that deliver end-to-end scale-up, and scale-out connectivity. The company’s custom connectivity solutions business complements its standards-based portfolio, enabling customers to deploy tailored architectures to meet their unique infrastructure requirements.
ROLE AND RESPONSIBILITIES
Senior Principal Thermal Engineer
Location: Research Triangle Park (RTP), North Carolina
Department: Hardware Engineering / System Architecture
Employment Type: Full-Time
We are seeking a Senior Principal Thermal Engineer to lead thermal architecture across next-generation AI systems, networking platforms, optical interconnects, and rack-scale infrastructure.
The Opportunity
This is a highly visible technical leadership role responsible for defining thermal strategy across:
- PCIe Scale-Up Fabrics
- UALink Scale-Up Networks
- Ethernet Scale-Out Fabrics
- ESUN Network Architectures
- Advanced Fiber Connectivity Solutions
- GPU Compute Platforms
- Rack-Scale AI Systems
- Near Package Optics (NPO)
- Co-Packaged Optics (CPO)
- Air-Cooled and Liquid-Cooled Open Rack Platforms
You will work closely with System Architects, Mechanical Architects, Power Architects, Silicon Engineering Teams, Software Architects, and ODM partners such as Accton, Hyve, Quanta, Wistron, and Gigabyte.
Define End-to-End Thermal Architecture
- Develop thermal architecture from silicon devices through complete rack-scale AI systems.
- Define thermal budgets, cooling requirements, and performance objectives.
- Drive architecture decisions balancing performance, reliability, power, density, and cost.
- Establish multi-generation thermal roadmaps supporting future AI infrastructure.
Lead AI Rack and Platform Cooling Design
Provide Thermal Leadership For
- GPU Compute Platforms
- PCIe Scale-Up Switch Platforms
- UALink Switch Systems
- Ethernet Scale-Out Platforms
- Rack Controllers
- AI Accelerators
- Optical Interconnect Systems
Develop system-level cooling strategies supporting next-generation high-density AI deployments.
Develop Advanced Air and Liquid Cooling Solutions
- Architect airflow solutions for high-performance computing systems.
- Define direct liquid cooling and cold plate solutions.
- Support advanced rack cooling technologies.
- Develop thermal strategies for future 100kW+ AI racks.
- Optimize thermal performance while reducing infrastructure cooling cost.
Lead Optical Thermal Innovation
Develop Thermal Solutions For
- Near Package Optics (NPO)
- Co-Packaged Optics (CPO)
- Optical Engines
- Silicon Photonics Platforms
- Fiber Connectivity Infrastructure
- Optical Transceivers and Modules
Address Thermal Interactions Between
- Optical engines
- High-speed SerDes
- Switch ASICs
- GPU interconnects
- Rack cooling systems
Drive Thermal Modeling and Validation
- Lead CFD simulation activities.
- Perform system-level airflow analysis.
- Develop thermal design guidelines.
- Correlate thermal simulations with lab measurements.
- Establish validation procedures and thermal KPIs.
Collaborate with ODM Partners
Work Directly With ODM And JDM Partners To
- Define thermal requirements
- Review rack and platform thermal designs
- Resolve thermal bottlenecks
- Support qualification and manufacturing readiness
- Ensure compliance with Open Rack design objectives
Partner Across Engineering Functions
Collaborate Closely With
- System Architecture
- Mechanical Engineering
- Power Architecture
- Electrical Engineering
- Silicon Design
- Reliability Engineering
- Manufacturing Operations
to deliver industry-leading AI infrastructure solutions.
BASIC QUALIFICATIONS
- BS, MS, or PhD in Mechanical Engineering, Thermal Engineering, Aerospace Engineering, Physics, or a related discipline.
- 15+ years of thermal engineering experience.
- Proven track record leading thermal architecture for AI infrastructure, networking platforms, servers, storage, or hyperscale systems.
- Deep expertise in:
+ Heat Transfer
+ Conduction and Convection
+ Airflow Optimization
+ Thermal Characterization
+ Cooling System Design
+ Rack-Level Thermal Architecture
- Hands-on experience using:
+ ANSYS Icepak
+ FloTHERM
+ 6SigmaET
+ CFD tools and methodologies
- Strong experience with thermal validation and correlation techniques.
PREFERRED QUALIFICATIONS
- Experience supporting NVIDIA, AMD, or Intel-based AI platforms.
- Experience with Open Rack and OCP architectures.
- Expertise in liquid cooling technologies.
- Familiarity with PCIe Scale-Up and UALink systems.
- Experience with Ethernet scale-out networking.
- Experience supporting optical technologies including:
+ NPO
+ CPO
+ Optical Engines
+ Silicon Photonics
+ Fiber Connectivity Systems
- Experience supporting rack power densities exceeding 50kW and scaling toward future 100kW–250kW deployments.
- Experience working directly with ODMs and hyperscale customers.
Leadership Attributes
The Ideal Candidate Will Demonstrate
- Strong systems thinking
- Strategic technology leadership
- Cross-functional influence
- Excellent communication skills
- Ability to drive architecture across multiple organizations
- Passion for solving complex infrastructure challenges
Why Join Us?
You will help define the thermal architecture for technologies that power the world's most advanced AI systems, including:
- PCIe Scale-Up Infrastructure
- UALink Fabrics
- Ethernet Scale-Out Networks
- Advanced Fiber Connectivity
- NPO and CPO Optical Architectures
- Open Rack AI Platforms
- Future AI Factory Deployments
This role offers a unique opportunity to influence industry-leading products and shape the future of rack-scale AI infrastructure.
Apply Today
If you are passionate about thermal innovation, AI infrastructure, optical systems, and rack-scale architecture, we'd love to hear from you. The salary range is $195,000 to $250,000, depending on experience, level, and business needs. This role may be eligible for discretionary bonuses, incentives, and benefits.
Join us in Research Triangle Park and help engineer the cooling technologies that power the future of AI.
We know that creativity and innovation happen more often when teams include diverse ideas, backgrounds, and experiences, and we actively encourage everyone with relevant experience to apply, including people of color, LGBTQ+ and non-binary people, veterans, parents, and individuals with disabilities.
INTRODUCTION
Astera Labs (NASDAQ: ALAB) provides rack-scale AI infrastructure through purpose-built connectivity solutions. By collaborating with hyperscalers and ecosystem partners, Astera Labs enables organizations to unlock the full potential of modern AI. Astera Labs’ Intelligent Connectivity Platform integrates CXL®, Ethernet, NVLink, PCIe®, and UALink™ semiconductor-based technologies with the company’s COSMOS software suite to unify diverse components into cohesive, flexible systems that deliver end-to-end scale-up, and scale-out connectivity. The company’s custom connectivity solutions business complements its standards-based portfolio, enabling customers to deploy tailored architectures to meet their unique infrastructure requirements.
ROLE AND RESPONSIBILITIES
Senior Principal Thermal Engineer
Location: Research Triangle Park (RTP), North Carolina
Department: Hardware Engineering / System Architecture
Employment Type: Full-Time
We are seeking a Senior Principal Thermal Engineer to lead thermal architecture across next-generation AI systems, networking platforms, optical interconnects, and rack-scale infrastructure.
The Opportunity
This is a highly visible technical leadership role responsible for defining thermal strategy across:
- PCIe Scale-Up Fabrics
- UALink Scale-Up Networks
- Ethernet Scale-Out Fabrics
- ESUN Network Architectures
- Advanced Fiber Connectivity Solutions
- GPU Compute Platforms
- Rack-Scale AI Systems
- Near Package Optics (NPO)
- Co-Packaged Optics (CPO)
- Air-Cooled and Liquid-Cooled Open Rack Platforms
You will work closely with System Architects, Mechanical Architects, Power Architects, Silicon Engineering Teams, Software Architects, and ODM partners such as Accton, Hyve, Quanta, Wistron, and Gigabyte.
Define End-to-End Thermal Architecture
- Develop thermal architecture from silicon devices through complete rack-scale AI systems.
- Define thermal budgets, cooling requirements, and performance objectives.
- Drive architecture decisions balancing performance, reliability, power, density, and cost.
- Establish multi-generation thermal roadmaps supporting future AI infrastructure.
Lead AI Rack and Platform Cooling Design
Provide Thermal Leadership For
- GPU Compute Platforms
- PCIe Scale-Up Switch Platforms
- UALink Switch Systems
- Ethernet Scale-Out Platforms
- Rack Controllers
- AI Accelerators
- Optical Interconnect Systems
Develop system-level cooling strategies supporting next-generation high-density AI deployments.
Develop Advanced Air and Liquid Cooling Solutions
- Architect airflow solutions for high-performance computing systems.
- Define direct liquid cooling and cold plate solutions.
- Support advanced rack cooling technologies.
- Develop thermal strategies for future 100kW+ AI racks.
- Optimize thermal performance while reducing infrastructure cooling cost.
Lead Optical Thermal Innovation
Develop Thermal Solutions For
- Near Package Optics (NPO)
- Co-Packaged Optics (CPO)
- Optical Engines
- Silicon Photonics Platforms
- Fiber Connectivity Infrastructure
- Optical Transceivers and Modules
Address Thermal Interactions Between
- Optical engines
- High-speed SerDes
- Switch ASICs
- GPU interconnects
- Rack cooling systems
Drive Thermal Modeling and Validation
- Lead CFD simulation activities.
- Perform system-level airflow analysis.
- Develop thermal design guidelines.
- Correlate thermal simulations with lab measurements.
- Establish validation procedures and thermal KPIs.
Collaborate with ODM Partners
Work Directly With ODM And JDM Partners To
- Define thermal requirements
- Review rack and platform thermal designs
- Resolve thermal bottlenecks
- Support qualification and manufacturing readiness
- Ensure compliance with Open Rack design objectives
Partner Across Engineering Functions
Collaborate Closely With
- System Architecture
- Mechanical Engineering
- Power Architecture
- Electrical Engineering
- Silicon Design
- Reliability Engineering
- Manufacturing Operations
to deliver industry-leading AI infrastructure solutions.
BASIC QUALIFICATIONS
- BS, MS, or PhD in Mechanical Engineering, Thermal Engineering, Aerospace Engineering, Physics, or a related discipline.
- 15+ years of thermal engineering experience.
- Proven track record leading thermal architecture for AI infrastructure, networking platforms, servers, storage, or hyperscale systems.
- Deep expertise in:
+ Heat Transfer
+ Conduction and Convection
+ Airflow Optimization
+ Thermal Characterization
+ Cooling System Design
+ Rack-Level Thermal Architecture
- Hands-on experience using:
+ ANSYS Icepak
+ FloTHERM
+ 6SigmaET
+ CFD tools and methodologies
- Strong experience with thermal validation and correlation techniques.
PREFERRED QUALIFICATIONS
- Experience supporting NVIDIA, AMD, or Intel-based AI platforms.
- Experience with Open Rack and OCP architectures.
- Expertise in liquid cooling technologies.
- Familiarity with PCIe Scale-Up and UALink systems.
- Experience with Ethernet scale-out networking.
- Experience supporting optical technologies including:
+ NPO
+ CPO
+ Optical Engines
+ Silicon Photonics
+ Fiber Connectivity Systems
- Experience supporting rack power densities exceeding 50kW and scaling toward future 100kW–250kW deployments.
- Experience working directly with ODMs and hyperscale customers.
Leadership Attributes
The Ideal Candidate Will Demonstrate
- Strong systems thinking
- Strategic technology leadership
- Cross-functional influence
- Excellent communication skills
- Ability to drive architecture across multiple organizations
- Passion for solving complex infrastructure challenges
Why Join Us?
You will help define the thermal architecture for technologies that power the world's most advanced AI systems, including:
- PCIe Scale-Up Infrastructure
- UALink Fabrics
- Ethernet Scale-Out Networks
- Advanced Fiber Connectivity
- NPO and CPO Optical Architectures
- Open Rack AI Platforms
- Future AI Factory Deployments
This role offers a unique opportunity to influence industry-leading products and shape the future of rack-scale AI infrastructure.
Apply Today
If you are passionate about thermal innovation, AI infrastructure, optical systems, and rack-scale architecture, we'd love to hear from you. The salary range is $195,000 to $250,000, depending on experience, level, and business needs. This role may be eligible for discretionary bonuses, incentives, and benefits.
Join us in Research Triangle Park and help engineer the cooling technologies that power the future of AI.
We know that creativity and innovation happen more often when teams include diverse ideas, backgrounds, and experiences, and we actively encourage everyone with relevant experience to apply, including people of color, LGBTQ+ and non-binary people, veterans, parents, and individuals with disabilities.
See all 36+ Principal Jobs at Astera Labs
Sign up for free to unlock all listings, filter by visa type, and get alerts for new Principal Jobs at Astera Labs.
Get Access To All JobsTips for Finding Principal Jobs at Astera Labs
Align your credentials to semiconductor systems depth
Principal roles at Astera Labs typically require deep expertise in PCIe, CXL, or high-speed SerDes architecture. Before applying, document your technical contributions at the system level, not just component work, so your resume reflects the scope they're hiring for.
Target Astera Labs through OFLC disclosure data
Search the DOL's OFLC public disclosure data to identify which job titles and work locations Astera Labs has certified for Labor Condition Applications. This tells you which Principal specializations they actively file for and which offices are sponsorship-active.
Confirm your visa category before your first interview
Astera Labs sponsors H-1B, TN, F-1 OPT, and employment-based Green Card pathways. Knowing which category fits your nationality and degree before the offer stage lets you answer sponsorship questions confidently and avoids delays once recruiting moves fast.
Use Migrate Mate to surface Principal openings directly
Filtering for Principal-level roles at sponsorship-active semiconductor companies by visa type saves significant time. Migrate Mate lets you browse verified sponsoring employers in Electronics and Hardware, so you're targeting positions where your immigration needs are already anticipated.
Negotiate timeline around LCA and I-129 filing windows
Once Astera Labs extends an offer, your start date depends on DOL certifying the Labor Condition Application before USCIS accepts the I-129. Build at least 60 days of runway into your proposed start date to absorb standard DOL processing and any USCIS requests for evidence.
Prepare for PERM early if a Green Card is your goal
Astera Labs sponsors EB-2 and EB-3 pathways, but PERM recruitment and DOL audit timelines can stretch well beyond a year. Raise your long-term immigration intentions with your hiring manager before signing, so the sponsorship commitment is documented from the start.
Frequently Asked Questions
Does Astera Labs sponsor H-1B visas for Principals?
Yes, Astera Labs sponsors H-1B visas for Principal-level roles. Because H-1B cap-subject petitions are subject to the annual lottery, timing matters. If you're already in H-1B status through another employer, a transfer petition avoids the lottery entirely. Cap-exempt pathways aren't available here, so plan around the April filing window if you're starting fresh.
How do I apply for Principal jobs at Astera Labs?
Applications go through Astera Labs' careers page, where Principal openings are listed by function, including hardware, firmware, and systems architecture. You can also find verified Principal roles at Astera Labs on Migrate Mate, which filters specifically for positions open to sponsored candidates. Tailoring your application to the specific connectivity technology in each job description significantly improves your chances of clearing the initial screen.
Which visa types does Astera Labs use for Principal roles?
Astera Labs works with H-1B transfers and new cap petitions, TN visas for Canadian and Mexican nationals in qualifying engineering specialties, F-1 OPT and STEM OPT extensions for recent graduates, and employment-based Green Card sponsorship through the EB-2 and EB-3 categories for longer-term hires. The right category depends on your nationality, degree field, and where you are in your immigration timeline.
What qualifications does Astera Labs expect for Principal roles?
Principal positions at Astera Labs generally require a bachelor's or master's degree in electrical engineering, computer engineering, or a closely related field, paired with substantial hands-on experience in areas like PCIe or CXL protocol design, analog mixed-signal systems, or high-speed interconnect architecture. For H-1B purposes, the degree must directly correspond to the specific technical specialty of the role, which Astera Labs documents carefully in its LCA filings.
How do I manage my visa status while waiting for an Astera Labs offer?
If you're on F-1 STEM OPT, you have up to 24 months of work authorization after your initial OPT period, giving Astera Labs time to file an H-1B on your behalf before your status expires. If you're in a 60-day grace period between jobs, you cannot begin work until a new petition is approved or a transfer receipt is issued. Confirm your I-94 expiration date with USCIS before accepting any offer.