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Administrative Assistant

Cambridge, MA

About Theseus

Theseus Pharmaceuticals is passionately committed to improving the lives of cancer patients by working to outsmart cancer resistance. Led by a team of targeted oncology pioneers with a proven track record developing and commercializing cancer therapeutics, we are developing the next generation of tyrosine kinase inhibitors (TKIs): “pan-variant” targeted therapies that address all known drug resistant mutations. We believe a pan-variant approach is the only way to address cancer resistance. Our lead program, THE-630, is a pan-variant KIT inhibitor for patients with advanced gastrointestinal stromal tumors (GIST), whose cancer has developed resistance to earlier lines of kinase inhibitor therapy. We are also developing a fourth-generation, selective epidermal growth factor receptor (EGFR) inhibitor to address C797S-mediated resistance to first- or later-line osimertinib treatment in patients with non-small cell lung cancer (NSCLC). For more information, visit theseusrx.com or follow the company on LinkedIn.

Role Description

The administrative assistant will be a key Theseus team member, providing administrative and office support to the team and organization at large.

Key Responsibilities

  • Administrative support to the executive team, including but not limited to:
    • Proactively manage calendars
    • Create monthly expense reports
    • Coordinate travel arrangements
    • Assist with projects as appropriate
  • Meeting coordination for the Theseus Team:
    • Reserve conference rooms
    • Coordinate calendar invites (often hybrid style)
    • Arrange catering orders
    • Coordinate day-of meetings
      • Greet/escort visitors
      • Set up and breakdown catering
      • Provide on-site assistance
    • Main point of contact for office coordination:
      • Perform general office duties, such as: greeting and escorting visitors, answering phones, responding to messages and requests, preparing correspondence
      • Manage incoming/outgoing mail & packages
      • Office supply inventory & orders
      • Distribute visitor parking passes
      • Update company directory/distribution lists
    • Project support as needed to the Manager, Administrative Operations
      • Help plan company events/team building activities
      • Assist with new office build-out, Spring 2022


  • BS or AS degree
  • Excellent organizational skills and attention to detail
  • Exceptional verbal and written communication skills
  • Ability to maintain high level of professionalism
  • Knowledge of Microsoft Office

What You Can Expect

  • Collaboration‌ ‌with‌ ‌a‌ ‌fun,‌ ‌diverse,‌ ‌and‌ ‌open-minded‌ ‌team‌ ‌that‌ ‌welcomes‌ ‌new‌ ‌ideas‌ ‌
  • Flexible ‌working‌ ‌environment‌ 
  • Opportunities‌ ‌for‌ ‌training and mentorship‌
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