---
title: 'Process Engineer at Tandem PV'
canonical: 'https://feeny.ai/job/process-engineer-tandem-pv-fremont-axq2danf6jat'
type: 'job'
last_seen: '2026-09-04'
---

# Process Engineer at Tandem PV

- **Company:** Tandem PV
- **Location:** Fremont
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-25
- **Last confirmed live:** 2026-09-04
- **Apply:** https://jobs.ashbyhq.com/tandempv/656e4331-cd6c-471f-b0c6-c9121fc41175

## Job description

At Tandem PV, we are a team of people who are passionate about building a more sustainable world by bringing cost effective solar panels onto the market. We’re scaling metal-halide perovskite solar technology to make best-in-class mechanically stacked tandem modules.   We have built efficient, durable cells, monolithic multi-cell submodules, and packaged modules with our scalable, low-cost process. Our next focus is expanding our team to work in our new pilot manufacturing facility.

## ABOUT THE ROLE

The Process Engineer supports development of thin-film vacuum deposition processes. Working with senior process engineers, the role is responsible for the complete experimental cycle: depositing films, characterizing them, analyzing the results, and applying those results to the next round of experiments. Work spans both R&D and pilot manufacturing tools according to business needs.

## RESPONSIBILITIES

- Design and execute DOEs on R&D and pilot manufacturing tools, varying process parameters to determine their effect on film properties
- Analyze experimental data, summarize findings, and contribute to the design of follow-up experiments
- Characterize films using standard thin-film metrology, including ellipsometry, UV-Vis, and four-point probe
- Support scale-up of deposition processes from R&D to pilot to high-volume manufacturing
- Assist with bring-up and qualification of newly installed deposition tools
- Troubleshoot hardware and process issues, and work with engineers to stabilize process windows
- Perform routine preventive maintenance on deposition and metrology tools, including chamber cleans, source and target changes, and leak checks
- Present experimental results and recommendations to the process engineering team and leadership
- Collaborate with device fabrication, characterization, and equipment teams on experiment planning, sample handoffs, and interpreting downstream results
- Draft standard operating procedures (SOPs), run logs, and experimental logs

## REQUIRED QUALIFICATIONS

- Bachelor's degree in a STEM field, or equivalent hands-on experience
- Hands-on experience in industry or academia with vacuum thin-film deposition — PVD and CVD techniques such as sputtering, evaporation, or ALD
- Ability to independently analyze experimental data — take a dataset, produce clear plots, and draw supportable conclusions. Requires proficiency with Excel or Google Sheets, statistics, and data analysis tools such as Python, R, MATLAB, JMP, or Origin.
- Careful, methodical approach to running experiments and recording what actually happened, including deviations from plan
- Ability to work independently in a fast-paced startup environment with emergent priorities and frequent troubleshooting
- Must be able to work independently in a team environment

## PREFERRED QUALIFICATIONS

- Working knowledge of vacuum technology, thin-film growth mechanisms, and plasma fundamentals
- Metrology experience — ellipsometry, four-point probe, transport, profilometry, XRD, XRF, SEM, XPS
- Exposure to design of experiments (DOE) or statistical process control (SPC)
- Familiarity with perovskite photovoltaics, semiconductors, or thin-film device stacks
- Experience with large-area glass coating

Tandem PV uses perovskite & silicon mechanically-stacked tandems to upgrade silicon solar panels, sharply decreasing installed systems costs, significantly increasing module manufacturing profit margins, and opening up vast new solar markets in the US and worldwide. TPV was co-founded by Stanford PhDs Colin Bailie and Chris Eberspacher; is advised by industry experts from Corning, First Solar, Vivint Solar, and Kateeva; has raised more than $50M in Series A funding. We were recently recognized as the Best Pre-Commercial Venture of 2025 by the Industry Growth Forum (IGF)

We are a team of people who are passionate about building a more sustainable world by delivering a new generation of solar panels to the market. We are constantly growing and are always looking for dedicated, hardworking, and empathetic teammates.

Tandem PV is an equal opportunity employer. All qualified applicants are encouraged to apply.

## About Tandem PV

## Company Overview
- **One-liner**: Tandem PV manufactures high-efficiency perovskite-silicon tandem solar panels in the U.S., designed to deliver significantly more power than conventional silicon panels for utility-scale solar projects.
- **Entity Type**: Private (Series A & Venture Capital backed)
- **Headquarters**: San Jose, California, United States
- **Founded**: 2016
- **Founders**: Colin Bailie (CTO), Chris Eberspacher (Managing Director)

## Core Business
- **Primary industry/industries**: Renewables & Environment, Advanced Solar Manufacturing, Clean Energy Technology
- **Target customers**: Independent Power Producers (IPPs) for utility-scale solar deployments; established solar manufacturers seeking to integrate perovskite technology into their existing silicon panel designs
- **Mission or purpose statement**: To accelerate to net zero with perovskite solar panels, restoring U.S. leadership in clean energy, driving down the cost of power, and fueling the next wave of innovation, including the AI revolution.

## Products & Services
- **Tandem Perovskite-Silicon Solar Panels (Utility-Scale)**: High-efficiency, standard-size solar panels that combine a silicon base with a thin-film perovskite layer. They deliver roughly 40% more power than conventional panels in the same form factor, reducing labor, installation, and land costs. Designed for high-volume U.S. manufacturing.
- **Technology Licensing & Partnership**: Tandem PV partners with established solar manufacturers to integrate its perovskite layer and process expertise into existing panel designs, enabling manufacturers to commercialize higher-efficiency tandem modules without reinventing their manufacturing stack.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed (Private company).
- **Key Metric**: Total funding of **$87 million** (combining venture capital, debt, and government grants) raised from leading investors and agencies. Estimated annual revenue of **$5.4 million** (per LinkedIn).
- **Notable Investors/Partners**: Eclipse Ventures (lead), Constellation Energy, Trellis Climate, Bioeconomy Capital. Government & research partners include the U.S. Department of Energy, National Science Foundation, California Energy Commission, and Lawrence Berkeley National Laboratory.
- **Growth Signals**:
    - Recently opened a commercial demonstration factory in Fremont, California.
    - Employee headcount has grown **67.9% year-over-year** (to 33 employees).
    - Commercial panels expected from the Fremont facility soon, with a target for high-volume manufacturing in 2028.
    - Holds a portfolio of 11+ patents in core perovskite-layer technology, system design, and durability.
    - Awarded 16 government grants.

## Competitive Advantages
- **Proprietary Tandem Technology**: The company's patented perovskite-silicon tandem panels have demonstrated **30% efficiency** in labs with a clear path to further gains, significantly outpacing the ~22% efficiency of standard silicon panels.
- **Demonstrated Durability**: Unlike many perovskite contenders, Tandem PV has shown less than 1% annual degradation in accelerated testing, meeting the lifetime expectations for long-term solar deployment.
- **Manufacturing Integration Expertise**: The company's technology is designed to integrate seamlessly into existing solar manufacturing supply chains, lowering the barrier to commercial scale.
- **U.S.-Based Manufacturing**: A key differentiator in the current clean energy policy environment, focusing on domestic production and energy security.

## Strategic Focus
- **Commercialization & Scaling**: Moving from lab breakthrough and pilot production to commercial manufacturing at the new Fremont demonstration factory, targeting high-volume production by 2028.
- **Cost Leadership**: Focusing on delivering more power per panel at a similar cost-per-watt, which lowers the total cost of ownership (balance of system costs) for utility-scale developers.
- **Partnership Development**: Actively seeking to license its technology to established solar manufacturers to accelerate market penetration.

## Why Work Here
- **Mission-Driven Impact**: Employees work on a technology that directly addresses climate change, energy security, and the massive energy demands of AI and electrification.
- **Cutting-Edge Science & Engineering**: The company is at the forefront of materials science and solar technology, offering a chance to work on a true breakthrough from the lab through to mass production.
- **Strong Backing & Trajectory**: Backed by $87 million in funding, a new demo factory, and double-digit headcount growth, indicating strong momentum and stability.
- **Collaborative & Lean Team**: The company is described as a "close-knit team," and the current size (~33 employees) suggests opportunities for outsized impact and visibility across disciplines.
- **Locations**: Headquarters in San Jose, CA. Currently hiring roles including a Director of Space Solar Technology (suggesting an adjacent venture), Quality Engineer, and R&D Technician.

## Sources
1. [Tandem PV Official Website](https://www.tandempv.com/)
2. [Tandem PV About Page](https://www.tandempv.com/about)
3. [Tandem PV Careers Page](https://www.tandempv.com/careers)
4. [Tandem PV LinkedIn](https://www.linkedin.com/company/tandem-pv)
5. [CB Insights - Tandem PV Profile](https://www.cbinsights.com/company/tandem-pv)

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