Senior Software Engineer, AI-Powered Marketplace Platform

Collectors; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

Collectors is seeking a Senior Software Engineer to build the PSA Liquidity Platform connecting buyers and sellers across our marketplace. You will own architecture, delivery, and end-to-end ownership of systems that power instant offers and trusted trading experiences.

Work with cross-functional teams to drive AI-first tooling, scalable microservices, and data-driven decisions that maximize GMV and improve conversion across channels. Onsite collaboration is common in our hybrid setup.

Qualifications

• 6+ years engineering experience with real-world shipping products.
• Full-stack proficiency across backend and frontend.
• Experience designing microservices and event-driven architectures.
• Strong communication and cross-functional collaboration.

Responsibilities

• Lead development of buyer tooling and pricing engine at scale.
• Own end-to-end delivery from design to production.
• Collaborate with product, data, and design to optimize GMV and conversion.
• Build scalable, low-latency microservices and systems.

Skills

Java Spring Boot

React

Svelte

Flutter/Dart

Kubernetes

AWS

Kafka

Distributed Systems

Observability

Tools

Kafka

Kubernetes

AWS

Job description

Collectors is seeking a Senior Software Engineer to build the PSA Liquidity Platform connecting buyers and sellers across our marketplace. You will own architecture, delivery, and end-to-end ownership of systems that power instant offers and trusted trading experiences.

Work with cross-functional teams to drive AI-first tooling, scalable microservices, and data-driven decisions that maximize GMV and improve conversion across channels. Onsite collaboration is common in our hybrid setup.