Full-Time

Senior Engineer

Battery Data and Modeling

Posted on 2/28/2025

SES AI

SES AI

51-200 employees

Li Metal batteries for EVs

Compensation Overview

$110k - $150k/yr

+ Bonus + Equity

Burlington, MA, USA

In Person

Category
Data & Analytics (2)
,
Required Skills
Python
Machine Learning
Data Analysis
Requirements
  • Ph.D. in Chemistry, Chemical Engineering, Mechanical Engineering, Materials Science, Data Engineering, Computer Engineering, or related fields.
  • Alternatively, a Bachelor’s degree with 5+ years or a Master’s degree with 3+ years of industry or academic experience in battery data analysis and modeling.
  • Proficiency in Python programming, data base, and engineering metadata handling.
  • Strong experience in data-driven battery predictive model development and cloud computing.
  • Understanding fundamental electrochemical principles and testing methodologies.
  • Ability for development and deployment of statistical model, machine learning model, deep learning model and AI model for battery cycle life prediction, as well as battery anomaly detection.
  • Familiarity with Li-ion and/or Li-metal batteries, including materials, cell designs, and testing methods. Prior project experience in battery-related field, especially ESS, is a plus.
  • Excellent problem-solving skills and attention to detail. Strong ability to work collaboratively within a cross-functional team. Willingness to engage in occasional fieldwork tasks.
  • Willingness to accommodate occasional meetings outside regular hours due to time zone differences.
Responsibilities
  • Lead battery data management and modeling efforts at SES Boston.
  • Analyze battery testing data to extract critical features and identify underlying patterns.
  • Utilize data modeling techniques to analyze multi-factorial tests and optimize key parameters.
  • Collaborate with colleagues to develop physics-based models for Li-ion and Li-metal batteries.
  • Work closely with AI/ML modeling engineers and cross-functional teams to interpret technical data and provide insights for advanced modeling tasks.
Desired Qualifications
  • Prior project experience in battery-related field, especially ESS.

SES AI develops Lithium Metal batteries for electric transportation, including cars and aircraft, serving automotive manufacturers, aerospace players, and other industries needing high-performance power. Its Li Metal cells deliver higher energy density and longer range than traditional lithium-ion cells by using advanced chemistry, with revenue from battery sales, partnerships, and licensing. The company uses state-of-the-art testing bunkers and publishes data reports to share progress on materials, engineering, and manufacturing quality. Its goal is to help accelerate electric transportation by offering higher-energy-density batteries through direct sales, collaborations, and licensing agreements.

Company Size

51-200

Company Stage

IPO

Headquarters

Woburn, Massachusetts

Founded

2012

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Simplify's Take

What believers are saying

  • Q1 2026 revenue hits $6.7M, up 47%, guiding $30M-$35M for 2026 from three units.
  • $20M three-year deal with ATGE Power drives North American energy storage sales.
  • 929% YoY revenue growth to $21M in 2025 fuels $178M liquidity into 2028.

What critics are saying

  • QuantumScape's 800+ cycle solid-state batteries push Volkswagen to drop SES lithium-metal.
  • Solid Power ships 40Ah cells to BMW and Ford, stealing SES EV partnerships.
  • $20M Q1 2026 cash burn exhausts liquidity by mid-2028 without breakthroughs.

What makes SES AI unique

  • SES AI integrates AI-discovered electrolytes into lithium-metal batteries for EVs and drones.
  • Molecular Universe AI platform yields six new materials tested by over 40 customers.
  • Chungju facility produces NDAA-compliant drone cells with 1 million annual capacity.

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Benefits

Health Insurance

Dental Insurance

Life Insurance

401(k) Company Match

Paid Holidays

Paid Vacation

Employee Assistance Program

Growth & Insights and Company News

Headcount

6 month growth

2%

1 year growth

0%

2 year growth

4%
Yahoo Finance
Apr 2nd, 2026
SES AI valued at $1.44 despite $0.95 share price amid $15M-$25M revenue forecast

SES AI has raised investor interest trading at around $0.95 per share, with a market capitalisation of approximately $352.7 million. Despite a strong one-year total shareholder return of about 70%, recent momentum has declined, though the year-to-date share price return stands at roughly 51%. The company reported $2 million in fourth-quarter revenue and projects 2025 revenue between $15 million and $25 million. SES AI is developing lithium-metal batteries for electric vehicles and has expanded into lithium-ion applications for humanoid robotics. The company signed a memorandum of understanding to provide up to 100 MWh of battery energy storage systems. Cash usage in operations and capital expenditure for 2024 was $78.3 million, below previous guidance. Analyst targets place fair value near $2.65 per share.

Business Wire
Apr 1st, 2026
SES AI expects Q1 2026 revenue of $6.3M-$6.5M, affirms $30M-$35M full-year guidance

SES AI, a developer of AI-enhanced lithium-metal and lithium-ion batteries, expects first quarter 2026 revenue between $6.3 million and $6.5 million, above consensus estimates. The revenue is primarily driven by energy storage system products sold to UZ Energy, with additional contributions from drones and subscription services. The company affirmed its full year 2026 revenue guidance of $30 million to $35 million, expecting contributions from all three business units: energy storage systems, drones and advanced materials. First quarter results include approximately $1.5 million from orders delayed from fourth quarter 2025 due to logistics constraints. SES AI plans to report detailed first quarter results on 23 April 2026 and will host a conference call to discuss its financial performance and outlook.

MIT Technology Review
Mar 26th, 2026
SES AI pivots from lithium batteries to AI materials discovery

SES AI, a Massachusetts-based battery company, is pivoting from developing advanced lithium batteries to AI materials discovery, according to CEO Hu. Axiom Math, a California startup, has released a free AI tool designed to discover mathematical patterns that could solve long-standing problems. Unlike most AI tools that find solutions to existing problems, Axiom Math aims to spot previously unidentified patterns and hidden links that could generate entirely new mathematical ideas. Meanwhile, escalating conflict in Iran has caused fossil-fuel price volatility, which some electric vehicle owners view as an opportunity for EV adoption. However, sustained rises in fossil-fuel prices could have broader economic concerns beyond the automotive sector.

Yahoo Finance
Mar 4th, 2026
SES AI posts $21M revenue in 2025, projects $30M-$35M for 2026

SES AI Corporation has reported full-year 2025 revenue of $21.0 million, a tenfold increase from $2.0 million in 2024, and provided 2026 revenue guidance of $30 million to $35 million. Fourth-quarter revenue reached $4.6 million, up 124% year-over-year. The battery technology company posted a GAAP net loss of $73.0 million for 2025, or $0.22 per share, improved from a $100.2 million loss in 2024. Non-GAAP net loss was $53.2 million, or $0.16 per share. SES AI ended 2025 with $200 million in liquidity, expected to last into 2028. The company is focusing on three revenue-generating business units: energy storage systems, drones and materials. Its Molecular Universe AI platform has discovered six materials breakthroughs currently being tested by over 40 customers.

Yahoo Finance
Jan 23rd, 2026
SES AI and Top Material partner to boost EV battery manufacturing in Korea for drones and urban air mobility

SES AI Corporation has announced plans to partner with Top Material to expand battery cell manufacturing capacity in Korea for drones and urban air transportation applications. The partnership, based on a non-binding agreement with a definitive deal expected in Q1 2026, aims to promote compliance with the US National Defense Authorization Act. SES AI reported $7.1 million in revenue for the latest quarter, up $3.6 million from the previous quarter, with a 51% gross margin. The company posted a GAAP net loss of $20.9 million and ended the quarter with $214 million in liquidity. Full-year 2025 revenue guidance was revised to $20 million to $25 million. The company recently launched its MU-1 Molecular Universe platform and acquired UZ Energy to enter the energy storage systems market.

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