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Senior Backend Engineer

Job

QUALIS1 INC

Denver, CO (In Person)

Full-Time

Posted 1 week ago (Updated 10 hours ago) • Actively hiring

Expires 7/4/2026

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Job Description

Senior Backend Engineer at
QUALIS1 INC
Senior Backend Engineer at
QUALIS1 INC
in Denver, Colorado Posted in about 20 hours ago.
Type:
full-time
Job Description:
Preferred Employment:
OPEN FOR W2
Typescript or Scala/Java, DynamoDB, DocumentDB, Kafka, Redis, AWS skills, Datadog, Splunk or similar SRE tools.
Experience:
8+ years We are looking for a senior engineer who owns end-to-end delivery of backend services-from design to production. The role involves building scalable, high-performance microservices using Node.js and TypeScript , designing distributed systems, and making sound architectural decisions. The ideal candidate has strong experience with AWS (EKS/ECS, Lambda, S3, SQS) , Kafka-based event-driven systems , and databases like MongoDB, DynamoDB, and Redis . You should be comfortable with system design, performance optimization, monitoring (Datadog/Splunk) , and production support with an SRE mindset . Familiarity with CI/CD, infrastructure as code, and proactive system improvement is expected. This is a highly ownership-driven role requiring critical thinking, initiative, and collaboration across teams.