Principal Software Engineer

Responsibilities

• Set technical direction, architecture patterns, and high-stakes engineering decisions across multiple domains and systems.
• Lead complex, multi-team, long-horizon initiatives from architecture through delivery and operational excellence.
• Design, prototype, and ship production systems using AI development tools while maintaining high standards for quality, testing, and rigor.
• Develop practices, guardrails, and review discipline for safe AI-enabled software development in a regulated environment.
• Own reliability, scalability, and security for mission-critical systems.
• Mentor and coach engineers, raise engineering quality standards, and improve the effectiveness of surrounding teams.
• Advise engineering, product, and executive stakeholders and build consensus across teams.
• Represent Hi Marley internally and externally and help attract and grow engineering talent.

Requirements

• Typically 10+ years of software development experience; candidates with less experience may be considered.
• Track record of delivering large, complex production systems at scale and influencing technical direction across teams.
• Experience designing distributed architectures, ideally in AWS, with expertise in scalability, loose coupling, separation of concerns, and designing for failure.
• Experience designing systems where AI and agents are architectural components, including agent design, orchestration, configurability, guardrails, and rigorous verification of AI-generated work.
• Sound judgment for building responsible AI products in a regulated, high-trust environment.
• Experience with relational and document-oriented databases, including performance tuning and scaling.
• Proficiency in Node.js and TypeScript, plus frontend frameworks such as React.
• Ability to influence without authority, build consensus, communicate complex issues clearly, and mentor engineers.
• Currently authorized to work in the United States without requiring current or future sponsorship.

Benefits

• Annual base salary range of $114,200–$267,800, depending on experience, skills, qualifications, and location.
• Equity grants for all employees.
• 4% matching 401(k) program.
• Medical, dental, vision, disability, and life insurance coverage for employees working 30 or more hours per week.
• Monthly wellness stipend.
• Paid parental leave.
• Flexible vacation policy.
• Flexible hybrid work environment with three days per week in the Boston office.