Senior R&D Engineer - Electrode & Cell

Lithios; Medford Hillside (MA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Equity in the company

Medical, dental, and vision insurance

401(k) plan with employer matching

Paid time off

Parental leave

Moving expenses support

Career development opportunities

Job summary

Lithios, in Medford, MA, seeks a research scientist to advance electrode structures and cell architectures through hands-on experiments with R&D, engineering, and manufacturing teams.

You will translate lab-scale learnings into system-level designs, optimize performance metrics, and mentor junior staff in a dynamic startup setting. The role offers equity and comprehensive benefits as part of a fast-growing lithium industry company.

Qualifications

• Bachelor’s/Master’s/PhD in materials science, chemical engineering, chemistry or mechanical engineering.
• 5+ years in electrochemical systems incl. lithium-ion batteries, flow batteries, or related.
• Experience with electrochemical characterization (CV, EIS) and materials analysis (SEM/XRD/XPS).
• Proven ability to design experiments and translate results into engineering improvements.
• Ability to work hands-on with systems and iterate quickly in a startup setting.

Responsibilities

• Design and execute experiments to quantify electrode and cell performance.
• Correlate material and fluid properties with electrochemical performance, guiding design decisions.
• Develop and optimize electrode structures, compositions, and fabrication methods.
• Establish metrics, design structured experiments, and iterate to improve lithium extraction rates.
• Translate lab results into practical cell designs and manufacturing processes.
• Communicate technical challenges across the organization to advance product development.
• Mentor and lead junior engineers and technicians.

Skills

Electrochemical systems

Experiment design

Data analysis

Lab leadership

Problem-solving

Education

Materials Science / Engineering degree

Chemical/Mechanical Engineering degree

Tools

Potentiometry

Cyclic voltammetry

EIS

SEM

XRD

XPS

Porosimetry

Job description

Position Overview

Lithios seeks a research scientist who will work with the R&D, engineering, and manufacturing teams to deliver solutions in the following areas:

• developing, optimizing, and testing electrode structures and cell architectures to improve electrochemical lithium extraction performance;
• identifying and evaluating electrode and cell design factors that impact the effectiveness of lithium extraction from complex multicomponent mixtures;
• quantifying and optimizing trade-offs in electrode and cell design, electrochemical operating conditions, and fluid management to maximize system performance;
• translating lab-scale learnings about cell operating conditions into system- and process-level designs and decisions;

This full-time role is hands-on in Medford, MA. Success may require interfacing with suppliers and partners. This role reports to the Director of R&D.

Candidate Qualifications

• Bachelor’s, Master’s, or PhD in materials science, chemical engineering, chemistry, mechanical engineering, or a related field or similar relevant experience.
• 5+ years of experience in electrochemical systems including lithium-ion batteries, flow batteries, supercapacitors, capacitive deionization, electrolyzers, fuel cells, electrodeposition, or electrowinning.
• Expertise in electrochemical characterization techniques including potentiometry, constant current and constant potential methods, cyclic voltammetry, and electrochemical impedance spectroscopy. Experience with materials characterization techniques such as SEM, XRD, XPS, porosimetry, or related methods is a plus.
• Demonstrated experience developing, optimizing, and characterizing electrodes, electrochemical cells, or electrochemical processes. Experience with flow cells, electrochemical stacks, porous electrodes, or other electrochemical cell architectures is a plus.
• Strong understanding of electrochemical kinetics, mass transport, charge transport, and the factors governing rate capability in electrochemical systems
• Experience designing experiments, analyzing complex data, identifying performance-limiting mechanisms, and translating results into actionable engineering improvements.
• Ability to independently drive technical projects from problem definition through experimental validation and implementation.
• Ability to work hands-on with systems to understand challenges, find creative solutions to unconventional problems, and iterate rapidly to maximize learning rates.
• The desire to be in a dynamic startup environment with a focus on critical thinking to find impactful solutions to difficult challenges.

Key Responsibilities

• Design and execute experiments using appropriate electrochemical methods to quantify electrode and cell performance.
• Develop a quantitative understanding of performance bottlenecks, correlate material and fluid properties with electrochemical performance, and use experimental data to guide design decisions.
• Develop and optimize electrode structures, compositions, and fabrication methods to maximize performance metrics while managing cell design and manufacturing considerations.
• Establish clear performance metrics, design structured experiments, and iterate rapidly to improve lithium extraction rates and efficiency.
• Translate promising lab-scale results into practical cell designs, manufacturing methods, and process design decisions.
• Communicate technical challenges and results across the organization to advance product and process development.
• Mentor and lead junior engineers and technicians, including interns/co-ops.

Compensation and Benefits

• Competitive salary.
• Equity in the company.
• A 401(k) plan with employer matching.
• Medical, dental, and vision insurance.
• 20 days of paid time off and 10 days of paid sick time off, in addition to all federal holidays and all days between Christmas and New Year’s Day.
• Eight weeks of paid parental leave, with the option to extend for an additional four weeks of unpaid leave.
• Flexible bereavement leave policy, including time off for the loss of a pet.
• Coverage of up to $5,000 in eligible moving expenses*.
• Company-supported opportunities in career development as well as the opportunity to be a leader in a rapidly growing organization.
• A fun, diverse, and talented team focused on making the biggest impact possible on the lithium industry.

*Eligible moving expenses include moving household goods and personal effects, employee travel and lodging, packing/unpacking services