Senior|Principal Software Engineer
- Category: Software Developer Jobs
- Location: Cambridge, Massachusetts
- Job Type: Full Time / Part Time
- Salary: Estimated: $ 22K to 35K
- Published on: 2025/09/21
Job highlights
Identified by Google from the original job post
Qualifications
We are seeking an experienced, creative, and talented Principal / Senior Software Engineer
The ideal candidate will have a strong background in software and product development, with the ability to lead projects and communicate effectively across teams and with ML researchers
The candidate must be an entrepreneurial, highly motivated, and purpose-driven individual
The successful candidate will have a track record of building consumer applications or large internal applications
S(he) must exhibit strong collaboration and communication skills
S(he) should be ready to lead application development in a very dynamic and innovative environment.
5+ years of experience in software development, with a strong focus on building applications
Extensive experience with AWS services (including EC2, S3, Lambda, etc) or a similar cloud services provider
Proficiency in Python, Java, C++, or other programming languages
Demonstrated ability to build scalable, efficient, and secure software applications
Motivated and team oriented, with an ability to thrive in a multidisciplinary environment
Excellent communication and collaboration abilities
Experience comes in many forms, skills are transferable, and passion goes a long way
Responsibilities
Act as a single-threaded leader for both front-end and back-end application development
Design system architecture for quickly moving, AI enabled back-end components
Contribute to User Interface design and participate in customer feedback
Manage the application development lifecycle including implementing Continuous Integration and Continuous Delivery best practices
Leverage AWS cloud infrastructure for scalable and efficient deployment of AI models
Uphold high standards of data security and compliance across all applications
Successful candidates will be able to thrive in a fast-paced, action-oriented, team environment and display a clear passion for AI innovation and impact
Job description
The Company
FL105 is a privately held, early-stage company pioneering the use of artificial intelligence to transform mental health paradigms and fundamentally augment mental wellbeing. We are creating a world where individuals and communities are empowered to preemptively identify and tackle psychological challenges and address mental health concerns.
FL105 is backed by Flagship Pioneering, an innovation enterprise that conceives, creates, resources, and builds companies that invent breakthrough technologies to transform health care, agriculture, and sustainability. Flagship has created over 100 groundbreaking companies since 2000, including Moderna.
The Role
We are seeking an experienced, creative, and talented Principal / Senior Software Engineer. The ideal candidate will have a strong background in software and product development, with the ability to lead projects and communicate effectively across teams and with ML researchers.
Key Responsibilities
In this role, you will:
• Act as a single-threaded leader for both front-end and back-end application development.
• Design system architecture for quickly moving, AI enabled back-end components.
• Contribute to User Interface design and participate in customer feedback.
• Manage the application development lifecycle including implementing Continuous Integration and Continuous Delivery best practices.
• Leverage AWS cloud infrastructure for scalable and efficient deployment of AI models.
• Uphold high standards of data security and compliance across all applications.
Successful candidates will be able to thrive in a fast-paced, action-oriented, team environment and display a clear passion for AI innovation and impact. The role offers a unique opportunity to help drive the strategy of an early stage AI-focused company. The candidate must be an entrepreneurial, highly motivated, and purpose-driven individual. The successful candidate will have a track record of building consumer applications or large internal applications. S(he) must exhibit strong collaboration and communication skills. S(he) should be ready to lead application development in a very dynamic and innovative environment.
Qualifications:
• 5+ years of experience in software development, with a strong focus on building applications.
• Extensive experience with AWS services (including EC2, S3, Lambda, etc) or a similar cloud services provider.
• Proficiency in Python, Java, C++, or other programming languages.
• Demonstrated ability to build scalable, efficient, and secure software applications.
• Motivated and team oriented, with an ability to thrive in a multidisciplinary environment.
• Excellent communication and collaboration abilities.
Preferred Qualifications:
• Experience with LLM development.
• AWS Certifications, such as Solutions Architect Associate or Professional.
• Able to build applications using the AWS CDK.
• Knowledge of security best practices for SaaS solutions.
About Flagship
Flagship Pioneering is a bioplatform innovation company that invents and builds platform companies, each with the potential for multiple products that transform human health or sustainability. Since its launch in 2000, Flagship has originated and fostered more than 100 scientific ventures, resulting in more than $+0 billion in aggregate value. Many of the companies Flagship has founded have addressed humanity’s most urgent challenges: vaccinating billions of people against COVID-1+, curing intractable diseases, improving human health, preempting illness, and feeding the world by improving the resiliency and sustainability of agriculture. Flagship has been recognized twice on FORTUNE’s “Change the World” list, an annual ranking of companies that have made a positive social and environmental impact through activities that are part of their core business strategies, and has been twice named to Fast Company’s annual list of the World’s Most Innovative Companies. Learn more about Flagship at www.flagshippioneering.com.
Flagship Pioneering and our ecosystem companies are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, ****** orientation, age, citizenship, marital status, disability, gender identity or Veteran status.
At Flagship, we recognize there is no perfect candidate. If you have some of the experience listed above but not all, please apply anyway. Experience comes in many forms, skills are transferable, and passion goes a long way. We are dedicated to building diverse and inclusive teams and look forward to learning more about your unique background.
Recruitment & Staffing Agencies: Flagship Pioneering and its affiliated Flagship Lab companies (collectively, “FSP”) do not accept unsolicited resumes from any source other than candidates. The submission of unsolicited resumes by recruitment or staffing agencies to FSP or its employees is strictly prohibited unless contacted directly by Flagship Pioneering’s internal Talent Acquisition team. Any resume submitted by an agency in the absence of a signed agreement will automatically become the property of FSP, and FSP will not owe any referral or other fees with respect thereto.
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