Senior Software Engineer, Personalization

Responsibilities

• Lead the productionalization of personalization and classification algorithms to enhance user discovery.
• Translate experimental outputs from AWS Sagemaker/Personalize into production-ready, efficient, and reproducible systems.
• Design and maintain model-serving infrastructure, including APIs, batch pipelines, and streaming systems.
• Collaborate on architectural decisions to ensure platform scalability, performance, and reliability.
• Drive experimentation with MVPs, balancing rapid iteration with long-term sustainable growth.
• Provide mentorship to engineers to foster a culture of growth and collaboration.

Requirements

• 5+ years of experience leading complex technical projects with significant business impact.
• Proven experience integrating ML or LLM outputs into core product features.
• Strong specialization in backend or infrastructure systems with broad full-stack knowledge.
• Proficiency in AWS, Java, Python, or TypeScript.
• Experience with scalability, performance optimization, and building data-driven tools.

Preferred Qualifications

• Experience working at consumer, social, or marketplace companies.
• Experience with Infrastructure as Code (IaC).

Benefits

• Base Salary $180K – $220K plus equity.
• Health, Dental, and Vision Insurance.
• Unlimited PTO and Equinox Membership.
• Team events, dinners, offsites, and free event tickets.
• Daily Uber Eats credit and a new MacBook.
• Relocation bonuses available for select candidates.

About the Company

Posh is a platform designed to combat digital isolation by helping people build IRL communities based on shared interests. We connect consumers with live events and the communities of people just like them. In six years, we have grown to over 8 million users and facilitated more than $350 million in transactions.