Senior Backend Engineer Jobs

Complex NTWRK

Location:
United States, Los Angeles Or New York City

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

165000.00 - 185000.00 USD / Year

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Job Description:

As a Senior Backend Engineer at Complex, you’ll play a key role in scaling our commerce and content platforms to serve millions of customers. Working within a domain-focused team, you’ll lead backend initiatives that drive high performance, reliability, and extensibility across our systems.

Job Responsibility:

Architect, build, and maintain scalable backend services and APIs using Node.js, Go, and AWS infrastructure
Design and document service contracts that integrate commerce, content, personalization, and user systems
Collaborate closely with frontend, mobile, infrastructure, and product teams to deliver well-integrated features
Contribute to our shift toward a modular, event-driven architecture using message queues (Kafka, etc.)
Drive initiatives to improve performance, availability, and fault tolerance in high-traffic services
Write robust tests and implement monitoring and alerting to support operational excellence
Participate in sprint planning, backlog grooming, and post-release reviews, bringing a backend perspective to product development
Triage and resolve production issues, participate in root cause analysis, and improve system observability
Contribute to documentation, tooling, and development workflows that improve backend team velocity and quality

Requirements:

5+ years of backend development experience in production systems
Proficiency in Node.js and/or Go
Experience designing RESTful or GraphQL APIs
Strong grasp of system design, testing, and debugging in cloud environments (AWS preferred)
Familiarity with Docker, Kubernetes, or similar container orchestration tools

Nice to have:

Experience with event-driven systems (Kafka, RabbitMQ, etc.)
Prior work integrating with Shopify or other headless commerce platforms
Exposure to observability tooling and performance optimization
Experience mentoring other engineers or leading technical initiatives

What we offer:

Best in class health, dental, and vision insurance
Healthcare FSA
Dependent Care FSA
Commuter Benefits FSA
Short-term/long-term disability and life insurance
Paid Parental leave
401k with 4% match
Pet Insurance
Legal and Identity Theft Plans
Vacation time and sick days

Additional Information:

Job Posted:
December 07, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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Senior Backend Engineer