# Senior Scientist, Electrolyte at SES

Senior Scientist, Electrolyte at SES in Greater Boston (Woburn, MA) – On-site/Hybrid. Hybrid. Posted November 24, 2025.

- Company: SES
- Location: Greater Boston (Woburn, MA) – On-site/Hybrid
- Workplace: Hybrid
- Experience: 3+ years
- Posted: 2025-11-24
- Apply: https://boards.greenhouse.io/sesai/jobs/4633202005?gh_jid=4633202005
- Source: https://jobmagic.ai/jobs/senior-scientist-electrolyte-ses-2jhyf5

## Requirements

- Advanced Degree: Doctorate (Ph.D.) in Chemistry, Chemical Engineering, or a related field, with 3+ years of post-PhD industrial experience.
- Diverse Formulation: Experience in formulation development beyond liquid electrolytes, including exposure to polymer electrolytes, ionic liquids, and/or solid-state electrolytes.
- Large Format Experience: Direct experience working with and characterizing large format cells (e.g., prismatic or cylindrical).
- Software/Modeling: Experience with computational chemistry or battery modeling tools.
- Industry Alignment: Demonstrated passion for and experience in the mobile energy or automotive space.

## Description

**About Us:**

SES AI Corp. (NYSE: SES) is dedicated to **accelerating the world’s energy transition** through groundbreaking material discovery and advanced battery management. We are at the forefront of revolutionizing battery creation, pioneering the integration of **cutting-edge machine learning** into our research and development. Our AI-enhanced, high-energy-density and high-power-density Li-Metal and Li-ion batteries are unique; they are the **first in the world** to utilize electrolyte materials discovered by AI. This powerful combination of "AI for science" and material engineering enables batteries that can be used across various applications, including **transportation (land and air), energy storage, robotics, and drones**.

To learn more about us, please visit: www.ses.ai

** What We Offer:**

- A highly competitive salary and robust benefits package, including comprehensive health coverage and an attractive equity/stock options program within our NYSE-listed company.

- The opportunity to contribute directly to a meaningful scientific project—accelerating the global energy transition—with a clear and broad public impact.

- Work in a dynamic, collaborative, and innovative environment at the intersection of AI and material science, driving the next generation of battery technology.

- Significant opportunities for professional growth and career development as you work alongside leading experts in AI, R&D, and engineering.

- Access to state-of-the-art facilities and proprietary technologies are used to discover and deploy AI-enhanced battery solutions.

** What we Need:**

The SES AI Department is seeking an **Electrolyte Scientist** to join our team dedicated to mobile energy storage. This scientist will be responsible for **creating innovative electrolyte materials and systems** that enable safe, long-lasting, and **high-energy-density lithium-ion batteries**. Key duties include **designing, developing, and optimizing electrolyte formulations**, as well as meticulously analyzing their interactions with other cell components during battery cycling and storage. The ideal candidate is a **passionate, highly detail-oriented, and collaborative team player** who thrives in a fast-paced environment and shares a vision for advancing energy storage technology.

**  Essential Duties and Responsibilities:**

- **Formulation and Materials Design**

- Design and develop electrolyte formulations compatible with high energy density lithium-ion anodes and high nickel content NMC cathode cell chemistries to achieve a long cycle life safely.

- Design electrolyte systems to demonstrate improvements in safety performance, including dimensional stability during battery cycling and storage.

- Provide technical assessment on existing electrolyte systems, additives, and lithium salts in high energy, high-capacity rechargeable lithium-ion cells.

- **Electrochemical Characterization and Analysis**

- Fully characterize coin and pouch cell performance using new materials and formulations.

- Utilize electrochemical testing and analytical techniques to understand reaction mechanisms, failure modes, and potential benefits of new formulations.

- Demonstrate the ability to use fundamental physical chemistry concepts and experimental techniques to provide promising electrolyte formulation strategies.

- **Project Management, Communication, and Leadership**

- Ability to independently plan, execute, manage, and communicate progress on projects.

- Support product development as required for the prototype-manufacturing team.

- Process Optimization: Design and implement streamlined testing metrics (e.g., Design of Experiments - DoE) to significantly shorten the R&D learning and development cycle.

- Communication & Insight: Effectively communicate new concepts, findings, and project updates to the team, drawing actionable insights from discussions.

- Technical Leadership: Serve as a technical mentor and leader to junior staff, guiding experimental design and professional development.

- Knowledge Integration: Actively integrate and synthesize existing in-house knowledge with new discoveries to accelerate development and problem-solving.

- IP Development: Proactively contribute to the company's intellectual property portfolio through invention disclosures and patent applications.

**Education and/or Experience:**

- Scientific Knowledge: MS (or better) level of understanding in Electrochemistry, Materials Science, Chemical Engineering, or a related physical science field.

- Experience with developing semi-solid electrolytes (e.g. in-situ gel polymer electrolyte, polymer electrolyte, hybrid solid/liquid electrolyte) are highly preferred. 

- Experience Level: Minimum of 3+ years of industrial or advanced academic experience (post-MS) focused on electrolyte or battery materials development.

- Chemistry Foundation: Strong knowledge of common lithium-ion electrolyte systems, including common lithium salts, solvents, and additives, and their specific roles.

- Physicochemical Understanding: Experience applying physical-chemical methods to tackle formulation problems and understanding properties like density, viscosity, and ionic conductivity.

- Electrochemical Techniques: Hands-on expertise in advanced electrochemical characterization, including Electrochemical Impedance Spectroscopy (EIS) and galvanostatic cycling.

- High-Purity Handling: Proven experience working with moisture sensitive materials in a glovebox or dry room environment, and expertise in handling high purity chemicals.

- Data Proficiency: Proficiency in battery cell tests (coin/pouch) and scientific data analysis (e.g., using statistical or scientific software).

- Industry Knowledge: Proven ability to onboard and integrate existing in-house knowledge with new discoveries and challenges.

**Preferred Qualifications:**

- Advanced Degree: Doctorate (Ph.D.) in Chemistry, Chemical Engineering, or a related field, with 3+ years of post-PhD industrial experience.

- Diverse Formulation: Experience in formulation development beyond liquid electrolytes, including exposure to polymer electrolytes, ionic liquids, and/or solid-state electrolytes.

- Large Format Experience: Direct experience working with and characterizing large format cells (e.g., prismatic or cylindrical).

- Software/Modeling: Experience with computational chemistry or battery modeling tools.

- Industry Alignment: Demonstrated passion for and experience in the mobile energy or automotive space.

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The salary range for this position as required under applicable pay transparency laws.
Salary Range$130,000—$170,000 USD