Senior Backend Cloud Engineer - Rust/Scala, Remote

ResumeXrays LLC; United States; Remote; USD 120,000 - 170,000; Full time

Benefits offered by this job

Healthcare, dental, vision

401k with employer contribution

Disability insurance

Medical FSA

Flexible PTO

Parental leave

Equity

Job summary

Halcyon is seeking a Senior Backend Engineer to join our cloud team. You will lead the development of our data platform and API services, focusing on Rust and Scala, with opportunities to guide migrations and support Python-based security analysis workflows.

We operate as a remote-native, distributed global team and value strong design, reliability, and performance in scalable backend systems. AWS, Kubernetes, and modern data stores are core to our stack.

Qualifications

• 5+ years of backend engineering experience, with a JVM-based codebase.
• Experience designing and owning distributed systems end-to-end.
• Experience with Rust, or a clear view on when to use it, and guidance for migration.
• Strong understanding of APIs, messaging systems (Kafka), and modern data stores (Postgres, DynamoDB, OpenSearch).
• Experience building services in a cloud-native environment, preferably AWS.
• Working knowledge of containers and Kubernetes.
• Comfortable working in a remote-first, asynchronous team environment.

Responsibilities

• Lead the design and delivery of features across the data platform and public API services, including ingestion, transformation, and enrichment of security data.
• Drive system design, architecture, and data flow decisions in partnership with product and platform engineering.
• Build, deploy, and own Scala-based backend services in production, keeping them reliable, secure, and performant.
• Help shape and execute migration of selected APIs from Scala to Rust, ensuring consistency and continuity.
• Set the bar for code quality, documentation, and operational excellence.
• Lead design reviews, code reviews and participate in on-call and incident response.
• Support and enhance the Python-based security analysis platform, including malware analysis engines, automated threat detection, and ML model workflows.

Skills

Backend engineering

Scala

Rust

Python

APIs

Kafka

Postgres

DynamoDB

OpenSearch

AWS

Kubernetes

Distributed systems

Remote work

Tools

Databricks

ClickHouse

Terraform

Helm

GitHub Actions

Prometheus

Grafana

CloudWatch

LIEF

ssdeep

TLSH

Job description

Halcyon is seeking a Senior Backend Engineer to join our cloud team. You will lead the development of our data platform and API services, focusing on Rust and Scala, with opportunities to guide migrations and support Python-based security analysis workflows.

We operate as a remote-native, distributed global team and value strong design, reliability, and performance in scalable backend systems. AWS, Kubernetes, and modern data stores are core to our stack.