SES AI · 2 days ago
Senior Scientist, Electrolyte
Greater Boston
Full-time
Onsite
Mid, Senior Level
3+ years expSES AI Corp. is dedicated to accelerating the world’s energy transition through groundbreaking material discovery and advanced battery management. The Senior Scientist, Electrolyte will be responsible for creating innovative electrolyte materials and systems that enable safe, long-lasting, and high-energy-density lithium-ion batteries, while driving advancements in battery technology through collaborative research and development.
BatteryElectric VehicleEnergy StorageManufacturingRenewable Energy
Responsibilities
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
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
Ability to independently plan, execute, manage, and communicate progress on projects
Support product development as required for the prototype-manufacturing team
Design and implement streamlined testing metrics (e.g., Design of Experiments - DoE) to significantly shorten the R&D learning and development cycle
Effectively communicate new concepts, findings, and project updates to the team, drawing actionable insights from discussions
Serve as a technical mentor and leader to junior staff, guiding experimental design and professional development
Actively integrate and synthesize existing in-house knowledge with new discoveries to accelerate development and problem-solving
Proactively contribute to the company's intellectual property portfolio through invention disclosures and patent applications
Qualification
Required
Scientific Knowledge: MS (or better) level of understanding in Electrochemistry, Materials Science, Chemical Engineering, or a related physical science field
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
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
Benefits
Comprehensive health coverage
Attractive equity/stock options program
Company
SES AI
SES AI Corp.
201-500 employees
H1B Sponsorship
SES AI has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (5)
2024 (6)
2023 (4)
2022 (3)
2021 (3)
2020 (4)
Funding
Current Stage
Public CompanyTotal Funding
$600.11MKey Investors
Honda MotorHyundai Motor CompanyGeneral Motors
2022-02-04Post Ipo Equity· $275M
2022-02-04IPO
2021-07-05Corporate Round· $100M
Leadership Team
Qichao Hu
Founder & CEO
Kyle Pilkington
Chief Legal Officer
Recent News
Satellite Today
2025-12-27
2025-12-24
2025-12-18
Company data provided by crunchbase