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Senior Staff Backend Engineer

Seattle💼 Full-time🗓 2026-06-02 → 2026-10-02

Core

Architect and build a next-generation durable execution platform (workflow engine) from scratch to enable rapid workflow development for hundreds of domain teams, supporting critical infrastructure like rocket delivery service.

Role type

Senior Staff Backend Engineer (Distributed Systems & Workflow Engine)

Builds

A highly scalable, fault-tolerant, distributed workflow engine enabling long-running, reliable workflows as code.

Domain

E-commerce / Distributed Systems / Cloud Infrastructure

Required skills

Java, Spring Framework, AWS, distributed systems design, high availability architecture, system reliability, concurrency management, data-driven decision making (via careerplan.io/jobs/7849003-senior-staff-backend-engineer-at-coupang)

Preferred skills

Python, Kubernetes, Temporal or Cadence programming models, AI/ML integration for system automation, stateful database management, global-scale traffic handling

Technologies

Java, Spring, AWS, Python, Kubernetes, Temporal, Cadence

Responsibilities

Lead end-to-end architectural design of a distributed workflow engine; Design for 5-6 nines availability and handle tail latencies; Integrate AI/ML models for predictive scaling and automated error recovery; Solve hard problems in distributed locking, timers, and deterministic execution; Influence cross-organizational collaboration to establish the platform as a global backbone.