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MercorMercor

Backend Engineer, Marketplace

Builds backend systems for marketplace matching, search, allocation, and workflows using Python/Go. Requires experience with reliable high-throughput APIs, distributed systems, and data modeling to optimize fill rates and performance.

About the job

What You’ll Build

  • Backend services that power candidate-job matching, routing, and marketplace workflows
  • APIs and internal systems for search, eligibility, scoring, allocation, and fulfillment
  • Data models and system abstractions for a rapidly evolving labor marketplace
  • Infrastructure for real-time and asynchronous decisioning at high volume
  • Operational systems and tooling that keep product-critical workflows reliable, observable, and easy to evolve

Example Problems

  • Build the systems that determine which candidates are eligible for which opportunities
  • Design matching and allocation infrastructure that balances speed, quality, and fill rate
  • Improve the performance and reliability of APIs serving marketplace decisions in real time
  • Develop workflow engines for onboarding, vetting, routing, and placement
  • Design backend abstractions that let product and ML teams iterate quickly without degrading system quality

What We’re Looking For

  • Track record of building and operating reliable backend systems in production
  • Strong judgment in system design, performance, reliability, and data modeling
  • Comfort working on high-throughput APIs, distributed systems, and asynchronous workflows
  • Ability to translate product and marketplace requirements into clean technical systems
  • High engineering standards and a bias toward simple, durable abstractions

Nice to Have

  • Experience with search, recommendation, matching, scheduling, or marketplace systems
  • Experience supporting ML-powered products or integrating model inference into production systems
  • Familiarity with event-driven architecture, queues, caching, and observability tooling

Tech Stack

Python, Go, Kafka, Postgres, Redis, Elasticsearch, Kubernetes, Terraform

Benefits

  • Generous equity grant vested over 4 years
  • A $10K housing bonus (if you live within 0.5 miles of our office)
  • A $1.5K monthly stipend for meals
  • Free Equinox membership
  • Health insurance

Skills

Python, Go, Kafka, Postgres, Redis, Elasticsearch, Kubernetes, Terraform, APIs, Distributed Systems

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