Senior Process Engineer, Vector Process Development and MS&T

Who We Are
Arcellx isa public, clinical-stage biotechnology company reimagining cell therapy by engineering innovative immunotherapies for patients with cancer and other incurable diseases. We believe that cell therapies are one of the forward pillars of medicine and our mission is to destroy cancer and advance humanity by developing cell therapies that are safer, more effective, and more broadly accessible.
Our team members are made up of talented innovators and dreamers working from our offices in Rockville, Maryland, and Redwood City, California. At Arcellx, we hire exceptional people and create a fun, diverse, supportive, and informal environment that allows everyone to do their best work.
What Matters to Us
Living our core values is essential to maintaining a work environment that is high-performing, inclusive, and collaborative. We look for candidates who demonstrate strong values alignment and bring different backgrounds, viewpoints, and abilities to the team.
Arcellx Core Values

• Character: Committed to always doing what's right.
• Audacity: Willing to challenge convention and share candid feedback with others.
• Determination: Curious and self-motivated. Always looking to improve and learn.
• Collaboration: "No job is too small" mentality. Humble and willing to help others.
• Originality: Will bring your unique perspective to the table and respect a diverse set of views and backgrounds.

The "Fine Print" - What You'll Do

• Participate in technical transfers to CMOs and provide manufacturing science and technology support to ensure robust production in a GMP environment.
• Lead manufacturing deviations investigations.
• Critically analyze and trend process data.
• Analyze laboratory experiments to support cell culture process development and GMP processes transfer activities to enable clinical manufacturing.
• Engage with CMOs as the person-in-plant (PIP) and process SME.
• Work with process and analytical development scientists for product characterization.
• Review batch records, SOPs, raw material specifications, development reports and GMP protocols at Arcellx and CMOs.
• Support the change control and the change management of different process versions and comparability assessments for process changes.
• Travel up to 30% to engage with external partners and collaborators.

Skills and Experience We Look For

• BS in chemical, biological, biomedical or biochemical engineering with 10+ yrs. of relevant experience, or MS and 8+ years of relevant experience, or Ph.D and 2+ years of relevant experience.
• Strong engineering, scientific and operational background in implementation of bioprocess unit operations and aseptic cell culture.
• Strong understanding of process development, technical transfer, and GMP requirements.
• Experience with viral vector production processes and analytical characterization methods.

Rewards at Arcellx
Our people are our greatest asset, and supporting their well-being is an essential part of delivering on our mission and impacting the lives of patients. Putting this belief into practice means offering strong compensation and benefits.
The base salary range for this position is $135,000 - $155,000 per year. Where a candidate falls within that range is determined by factors such as years of experience. Our compensation package also includes an annual bonus based on company goals and an equity (RSU) grant. We do offer relocation assistance for roles if required.
Our market-leading benefits package includes: 100% coverage for medical, dental and vision for team members and dependents, unlimited vacation, a 3-day weekend every month, fully-paid parental leave for up to 6 months, tuition reimbursement, 401k employer contribution and more.
Join us in our quest to reimagine cell therapy and destroy cancer. For more on our technology, culture, and team, go to
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