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Halcyon

Senior Backend Cloud Engineer

Halcyon

. Lead the design and delivery of features across the data platform and public API services, including ingestion, transformation, and enrichment of security data.

Posted 11/7/2026full-timeRemote • United StatesSenior💰 $120,000 - $170,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in backend engineering with a focus on Scala and Rust, leading the design and delivery of secure, reliable, and high-performance data platforms and APIs. Proficient in cloud-native environments and distributed systems, with a strong understanding of modern data stores and messaging systems.

Highest-signal resume keywords
Scala Backend DevelopmentRust Migration GuidanceAPI Design and ImplementationCloud-Native Architecture (AWS)Distributed Systems Ownership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Backend EngineeringScalaRustAPIsKafkaPostgresDynamoDBOpenSearchPythonMachine Learning
Soft Skills
LeadershipCollaborationRemote Team Communication
Tools & Technologies
AWSKubernetesTerraformHelmGitHub ActionsPrometheusGrafanaCloudWatchDatabricksClickHouse
Industry Keywords
Security DataData PipelinesHigh-Availability SystemsMalware AnalysisThreat Detection

Tech Stack

Tools & technologies
AWSCloudDistributed SystemsDynamoDBGrafanaKafkaKubernetesPostgresPrometheusPythonRustScalaTerraform

About the role

Key responsibilities & impact
  • 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 with product and platform engineering.
  • Build, deploy, and own Scala-based backend services in production, maintaining reliability, security, and performance.
  • Help execute migration of selected APIs from Scala to Rust.
  • Set standards for code quality, documentation, and operational excellence.
  • Lead design reviews and code reviews; participate in on-call and incident response.
  • Support and enhance the Python-based security analysis platform, including malware analysis engines, automated threat detection, and machine learning model workflows.

Requirements

What you’ll need
  • 5+ years of backend engineering experience, with recent experience in a JVM-based codebase.
  • A track record of designing and owning distributed systems from start to finish.
  • Experience with Rust, or a well-formed view of when it’s the right tool, and the ability to help guide a 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.
  • Bonus: Familiarity with functional programming patterns and idiomatic Scala.
  • Bonus: Experience with Databricks and ClickHouse or similar lakehouse and analytical/OLAP data stores.
  • Bonus: Experience with Terraform, Helm, and GitHub Actions.
  • Bonus: Familiarity with observability tools including Prometheus, Grafana, and CloudWatch.
  • Bonus: Prior work on security products, data pipelines, or high-availability systems.
  • Bonus: Python development experience with security analysis tools and malware detection frameworks such as YARA, PE analysis, and binary analysis.
  • Bonus: Familiarity with machine learning workflows, AutoML, and MLflow for model deployment and management.
  • Bonus: Experience with binary analysis libraries including LIEF, ssdeep, and TLSH and security tooling integration.

Benefits

Comp & perks
  • Comprehensive healthcare (medical, dental, and vision) with premiums paid in full for employees and dependents.
  • 401k plan with a generous employer contribution.
  • Short and long-term disability coverage, basic life and AD&D insurance plans.
  • Medical and dependent care FSA options.
  • Flexible PTO policy.
  • Parental leave.
  • Generous equity offering.
  • Discretionary bonuses/incentives may be available.