Sr. Mechanical Engineer

Job Title: Sr. Mechanical Engineer Salary: 125,000-$190,000

Job Summary: Alsym Energy is looking for a self-driven and motivated mechanical engineer with a passion in the field of energy storage. In this position, the candidate will have an opportunity to drive rapid and innovative advancements in materials and processes for next-generation energy storage systems. The successful candidate will be responsible for active product development efforts and will work closely with a team of engineers and scientists to deliver Sodium-ion systems with demanding performance requirements.

Industry Background: Energy storage is one of the fastest-growing sectors in the global energy economy, with annual stationary storage capacity additions projected to grow 23% per year from 2025 to 2035, driven by surging electricity demand from electrification, data centers, and AI infrastructure. Alsym Energy is the leading developer of non-flammable, high-performance, low-cost sodium-ion batteries for AI data centers, utilities, commercial real estate and anywhere else energy storage is needed.

Key Qualifications:

• BS in Mechanical Engineering, or a related field

• 6+ years industry experience with demonstrated success in mech. design, product development, prototyping

• Direct experience with lithium or sodium-ion battery design and manufacturing is required

• Strong competence and handling of GD&T (ASME Y14.5)

• Strong competency with engineering software tools is required (CAD, layout tools etc.)

• Experience with finite -element analysis (ANSYS, COMSOL etc.) is highly preferred

• Experience with a wide variety of cell form factors (pouch, cylindrical, prismatic) is highly preferred

• Experience with battery production equipment (sealer, winders, coaters etc.) is preferred

• Strong team player, excellent communicator, self-motivated individual with a problem-solving mindset

• Professional demeanor towards suppliers and partners as well as colleagues

• Detail-oriented individual with a quality mindset for product design and delivery Roles & Responsibilities:

• Own the prototyping and design for Alsym’s large format cells

• Produce detailed designs and drawings for Alsym’s large format prismatic cells

• Support Alsym’s external cell prototyping events (5-10% travel)

• Assist process engineers in the commissioning of battery equipment

Why Join Us? At Alsym, we believe in equitable compensation and a healthy work-life balance. Beyond a competitive salary, we offer a benefits package designed to support you both inside and outside the office.

Perks & Lifestyle

• Prime Location: We are within easy walking distance of the train station.
• Commuter Friendly: Enjoy the convenience of free on-site parking.
• Health & Wellness: Stay active with access to our free on-site gym.
• Friday Fuel: We provide free lunch delivery every Friday to celebrate the end of the work week together.

Comprehensive Benefits

• Health & Dental: Premium insurance coverage through Blue Cross Blue Shield.
• Financial Future: Every employee is eligible for 401k plans and stock options.
• Time to Recharge: A flexible Paid Time Off (PTO) program to help you find your balance.
• Family & Security: Full eligibility for PFML (Paid Family and Medical Leave).

Our Commitment to You We maintain a firm Anti-Harassment Policy that includes robust Diversity, Inclusion, Equity, and Gender Protections. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Note: A full, detailed listing of all benefits will be provided following a formal offer of employment.