Package Layout Engineer

The job

LIVE Employer public job feed (private-sector employer) Source: the employer's public careers feed · Data: listed 2026-08-19

Job description

Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world’s first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.

Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!

If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.

Lightmatter is (re)inventing the future of computing with light!

About This Role

Lightmatter is looking for a Package Layout Design Engineer to drive the next generation products from concept to development. You will be part of the Signal Integrity, Power Integrity and Packaging team, tasked with delivering substrate layouts that support the package architecture from concept, through design optimization and completion, meeting stringent signal integrity, power integrity, and design for manufacturing requirements. This position offers a unique opportunity to work on new package architectures by solving complex interactions across digital, analog and photonics domains. 

Responsibilities

• Deliver IC package substrate layouts for standard and advanced packaging technologies.
• Contribute to the product concept phase by delivering preliminary substrate designs and floorplanning to support overall stack-up (Silicon/package/MB) optimization.
• Collaborate with package substrate suppliers and Outsourced Semiconductor Assembly and Test (OSAT) companies to apply layout design rules, stack up, and implementation guidelines.
• Generate fab files and coordinate with substrate suppliers and OSATs to support Design for Manufacturing (DFM) and Design for Assembly (DFA) closure.
• Design package layouts while adhering to signal integrity, power integrity, thermal, and mechanical requirements.
• Design packages incorporating analog and digital elements/interfaces.
• Support signal/power integrity engineers by providing iterative test routes to refine design rules and routing topologies.
• Coordinate across functional teams to execute error-free Package Design Tape Outs on schedule.
• Support and adapt design automation and verification activities to improve team efficiency.

Qualifications

• B.S. or M.S. degree in Electrical Engineering or similar discipline with at least 5 years of relevant experience
• Minimum 3–5 years of experience in IC package layout design.
• Proficient with Allegro X APD.
• Understanding of IC package substrates and organic materials, and their impact on package design.

Preferred Qualifications

• Educational background in IC packaging and substrate layout design.
• Familiarity with system-level validation tools such as Cadence Integrity 3DIC for package/IC codesign.
• Familiarity with layout tools (e.g., Expedition Package Designer, Pads Layout, Altium, etc.).
• Experience with layout tool scripting languages (e.g., SKILL or Python) to enable design automation.
• Exposure to or interest in early-stage architectural pathfinding and physical feasibility studies for multi-chiplet and advanced packaging architectures (2.5D/3D IC, Silicon Interposers, EMIB, Fan-Out Chip-on-Wafer, etc.).
• Experience evaluating floorplans, escape routing, bump patterns (micro-bumps / hybrid bonding), and die-to-die (D2D) interface topologies.
• Excellent communication skills and the ability to collaborate effectively in cross-functional teams.

We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

Benefits

• Comprehensive Health Care Plan (Medical, Dental & Vision)
• Retirement Savings Matching Program
• Life Insurance (Basic, Voluntary & AD&D)
• Generous Time Off (Vacation, Sick & Public Holidays)
• Paid Family Leave
• Short Term & Long Term Disability
• Training & Development
• Commuter Benefits
• Flexible, hybrid workplace model
• Equity grants (applicable to full-time employees)

Benefits eligibility may vary depending on your employment status and location. Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.

Export Control

Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws. 

Explore around this job

Field: Engineering, Construction and Energy Sub-niche: Manufacturing and hardware engineering All jobs at Lightmatter Jobs in California Jobs in Mountain View, CA California state guide

View this job and apply on the employer's page →

You apply on the employer's page; AtiveSite does not receive or process applications and is not affiliated with the employer. The description above is shown as the source published it.

About the role

This is a — role in the Engineering, Construction and Energy field (Manufacturing and hardware engineering) at Lightmatter.

We could not match this job title to one occupation in the official wage statistics, so no pay estimate is shown. Pay is not in the source listing; ask the employer for the range and compare in the 240 job niches.

How to prepare and behave

This is editorial guidance, not information from the employer.

• Read the whole description and match your examples to its requirements; use the same words the posting uses where they are true for you.
• Research the employer before the interview: what it does, who its customers are and recent news; prepare two or three questions about the work.
• Arrive early (or log in early for a video call), dress one step above the daily dress code, and test your camera and audio beforehand.
• Answer with short stories: the situation, what you did and the result. Give numbers when you have them and never invent them.
• Be honest about gaps; say what you did to learn and how fast you can close them.
• Ask about the team, the first 90 days, how success is measured and the schedule; do not open with salary and time off.
• When pay comes up, know the market range for the occupation and your lowest acceptable offer before you answer; ask for the full package in writing.
• Send a short thank-you message within a day, mentioning one thing you discussed.

Know your rights as a candidate and an employee:

• U.S. Equal Employment Opportunity Commission: prohibited employment practices
• U.S. Department of Labor: Wage and Hour Division
• CareerOneStop (U.S. Department of Labor): job search help, interview tips and resumes
• USA.gov: avoiding job scams

The city

Mountain View, CA is not one of the cities with its own page in our guides, so here is the state: California.

The state economy in brief

California is in the West region (Pacific division) and has 39,287,376 residents (the 1st largest of the 50 states and DC by population), with a median age of 37.9. Its economy produced about $4,438,822 million in the latest four quarters (BEA), 1st among states and DC, equal to $112,983 per resident.

Jobs and the labour market

The unemployment rate was 5.1% in 2026M09, which is 49th lowest of 51 (1st is the lowest). Employers had job openings equal to 3.6% of employment, 37th highest of 51, a measure of how hard it is to hire. The median wage across all occupations is $58,240 a year ($28.00 an hour), 14% above the national median ($58,240 against $50,980).

What people do and what it pays

The occupations with the most jobs in California are Home Health and Personal Care Aides (970,150 jobs, median $34,320); Fast Food and Counter Workers (449,840 jobs, median $42,280); Retail Salespersons (376,460 jobs, median $38,440); Laborers and Freight, Stock, and Material Movers, Hand (355,500 jobs, median $44,710); Registered Nurses (338,940 jobs, median $140,270). Among occupations with at least 2,000 jobs, the best paid are Airline Pilots, Copilots, and Flight Engineers (median $353,900); Psychiatrists (median $353,500); General Internal Medicine Physicians (median $313,890). Compared with the nation, the state is most specialised in farming, fishing, and forestry (4.1 times the national share of workers) and healthcare support (1.5 times the national share of workers).

Cost of living, taxes and workplace rules

Prices are above the national average in California: the regional price parity is 110.7 against 100 for the whole country (51st lowest of 51). Median gross rent is $2,036 a month and the median household income $99,122, so a year of rent equals 24.6% of income; the median home value is $734,700. The state minimum wage is $16.90 (the higher of state and federal rates applies to most workers). State income tax on wages: Graduated, top rate 13.30%. It is not a right-to-work state, so union contracts can require fees from covered workers. It runs a state paid family and medical leave programme.

People and commuting

27.0% of residents were born abroad and 37.1% of adults hold a bachelor's degree or higher. Among workers, 65.7% drive alone, 2.9% use public transit and 17.2% work from home; 19.4% commute 45 minutes or more.

State guide: California →

Where to live

The job city has no coordinates we can place on the map, so no housing comparison is shown. Use the 250 largest cities table to compare rent and income.

Career paths

We could not match this title to one occupation, so here are the other sub-niches in Engineering, Construction and Energy, where your skills may carry over:

Construction and field engineering (458) Energy and utilities (623)

Distances

This job has no single city we can place on the map (remote, flexible or unmatched location), so no distance table is shown. Browse all Engineering, Construction and Energy jobs with distances from any of the 20 largest cities.

The employer

Lightmatter is the employer in this listing. See all its open jobs here →

We do not hold headcount or revenue for this employer. Check its careers site and, if it is listed on a stock exchange, its public filings (SEC EDGAR search).

What it is like to work at a company (culture, schedules, benefits) is not in the source data, so we do not describe it. Read the description and ask the questions under "How to prepare".

Other open jobs at Lightmatter

Similar jobs

Same sub-niche: Manufacturing and hardware engineering

More jobs in Mountain View, CA

All Manufacturing and hardware engineering jobs → · All Engineering, Construction and Energy sub-niches →

FAQ

What is the Package Layout Engineer job at Lightmatter?

A private-sector role in engineering, construction and energy (manufacturing and hardware engineering) listed 83 days ago. The full description is on this page and on the employer's page.

Where is this job?

Mountain View, CA.

How do I apply?

Use the "View this job and apply on the employer's page" button. AtiveSite does not receive applications.

How much does it pay?

The listing does not publish pay, and we could not match the title to one official occupation.

What is the cost of living there?

See the state or country guide for rent, income and taxes.

How old is this listing?

It was posted on 2026-08-19 (83 days ago). Jobs older than 90 days are not shown.

Are there similar jobs?

Yes: browse manufacturing and hardware engineering jobs in California.

Sources and terms

• Job data: Lightmatter careers page public feed (listing dated 2026-08-19). The job disappears from this site when it disappears from the source.
• Wages and projections: BLS OEWS (May 2025) and Employment Projections 2025–35.
• City and county figures: Census Bureau ACS 2020–2024, BEA, BLS QCEW and LAUS, NASA POWER climatology; distances from Census Gazetteer coordinates.

AtiveSite is not affiliated with or endorsed by the employer or any government agency, and does not process applications. Verify every detail with the employer before acting.

Sources

• BLS OEWS (wages and employment by occupation, May 2025)
• BLS Employment Projections 2025–35
• BLS Local Area Unemployment Statistics
• BLS JOLTS
• BLS State and Metro Area Employment
• Census Bureau American Community Survey (via Census Reporter)
• BEA GDP by state and Regional Price Parities
• IRS 2026 tax adjustments
• U.S. Department of Labor, minimum wage by state
• Tax Foundation state income tax rates 2026
• USAJOBS
• USCIS
• U.S. Department of State, visas
• NASA POWER climatology
• GeoNames / Census Gazetteer (coordinates)