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Added 6 mins ago
Technical Marketing Engineering Technical Leader
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Experience working directly with enterprise customers as a Solution Architect, Systems Engineer, Customer Experience Engineer, Technical Marketing Engineer, or similar technical leadership…
Added 16 mins ago
Sr Product Manager - Solutions
Cisco Systems, Inc.
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Experience working directly with enterprise customers as a Solution Architect, Systems Engineer, Customer Experience Engineer, Technical Marketing Engineer, or similar technical leadership…
Added 24 mins ago
AWS Cloud Engineer IV
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The purpose of the AWS Cloud Engineer IV is to design, implement, and maintain cloud infrastructure systems using Amazon Web Services (AWS). This position will play a crucial role in…
Added 35 mins ago
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…process, controls, fire protection, and telecommunications/ICT systems, as…
Added 35 mins ago
ConvergeFSI - Lead UI Engineer - Products & Platforms
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Added 35 mins ago
ConvergeFSI - Lead UI Engineer - Products & Platforms
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Added 1 hour ago
IT Security Engineer II
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CMT is looking for a highly motivated and collaborative IT Security Engineer to join the CMT team. Reporting to the leader of IT Security, you will work in a highly collaborative role,…
Added 1 hour ago
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Mid/Senior Full Stack AI Engineer
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Added 1 hour ago
Field Service Engineer - 304344
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DNI Emerging Technologies is seeking a qualified Field Service Engineer to support the Army Systems Engineering and Program Management Services (Army SEPM) at Fort Stewart, GA.
Added 1 hour ago
Senior Linux System Administrator - 306502
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Administer, engineer, optimize, and maintain enterprise Linux systems and services across multiple security levels and operational environments.
Added 1 hour ago
Java Kafka Engineer
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Design, develop, and maintain Java based enterprise applications using Spring Boot and microservices architecture.
Added 2 hours ago
Forward Deployed Engineer (FDE)
PVM, Inc.
Arlington, VA
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Added 2 hours ago
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Senior Solutions Engineer, Digital Native and Mid-Market
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Remote, United States
- $147,000 to $175,000 USD / year
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Added 3 hours ago
Director, Federal Sales: Air Force and Space Force (Government)
AT&T
Columbia, MD
…execute a portfolio strategy that connects air, space, base, enterprise IT, cyber, data, and modernization priorities with secure, resilient communications and technology…
Added 3 hours ago
Director, Federal Sales: Navy and Marine Corps (Government)
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…portfolio strategy that connects fleet, force, installation, enterprise IT, cyber, logistics, and modernization priorities with secure, resilient communications and technology…
Added 3 hours ago
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Added 3 hours ago
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Support integrations between Salesforce, enterprise systems, external applications, and AI services using APIs, JSON, and other data exchange methods.
Added 3 hours ago
Graduate Development Program, Associate Analyst, Technology Security
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…potential cyber threats. You’ll gain hands-on experience with enterprise-level security tools, processes, and teams while working on real projects from the start. This role offers exposure…
Added 4 hours ago
CyberArk Engineer Senior
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SAIC is currently seeking a CyberArk Engineer Senior to support DOT. As a CyberArk Senior Systems Engineer, you'll play a key role in enhancing our cybersecurity and identity management…
Added 4 hours ago
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Added 4 hours ago
Senior Data Engineer - Clearance Required
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LMI is hiring a Senior Data Engineer to turn fragmented customer data into dependable inputs for national security applications, analytics, and AI. You will build pipelines and data models…
Added 4 hours ago
Staff Data Engineer (CBP)
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Added 4 hours ago
DevOps Engineer
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Added 5 hours ago
Inside Presales System Engineer
Hewlett Packard Enterprise
Durham, NC
Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications…

Halcyon

Senior Backend Cloud Engineer

Remote, United States

Base Salary Range: $120,000 - $170,000

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Job details

Pay: Base Salary Range: $120,000 - $170,000
Experience: 5+ years of backend engineering experience, with recent experience in a JVM-based codebase.
Posting language: English
Posted: Nov 6, 2026

Original job description

What we do:

Halcyon is the industry’s first dedicated, adaptive security platform that combines multiple proprietary advanced prevention engines along with AI models focused specifically on stopping ransomware.

Who we are:

Halcyon was formed in 2021 by a team of cyber industry veterans after battling the scourge of ransomware (and advanced threats) for years at some of the largest global security vendors. Comprised of leaders from Cylance (now Blackberry), Accuvant (now Optiv), Fireye and ISS X-Force (now IBM), Halcyon is focused on building products and solutions for mid-market and enterprise customers.

As a remote-native, completely distributed global team, we recognize great talent can exist anywhere. We invite you to apply to a job you’re interested in and we'll work a plan to meet your needs.

The Role

At Halcyon, we’re building a world-class anti-ransomware platform grounded in innovation and resilience. As part of that vision, we’re looking for a Senior Backend Engineer to join our cloud team. You’ll lead the development and evolution of our data platform and API services, working within a modern tech stack that blends Scala and Rust.

You’ll join a team focused on building scalable, maintainable backend systems that serve both internal and customer-facing functions. Your primary focus will be on Rust and Scala services, with opportunities to shape our transition to Rust where it makes sense. Python development experience is highly valued, particularly for supporting our security analysis platform which includes malware analysis engines, automated threat detection, and machine learning workflows.

Responsibilities

Lead the design and delivery of features across our 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 our migration of selected APIs from Scala to Rust, ensuring consistency and continuity along the way.
Set the bar for code quality, documentation, and operational excellence.
Lead design reviews, code reviews and take part in on-call and incident response.
Support and enhance our Python-based security analysis platform, including malware analysis engines, automated threat detection, and machine learning model workflows.

Skills and Qualifications

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 Skills and Qualifications

Familiarity with functional programming patterns and idiomatic Scala.
Experience with Databricks and ClickHouse (or similar lakehouse and analytical/OLAP data stores).
Experience with Terraform, Helm, and GitHub Actions.
Familiarity with observability tools (Prometheus, Grafana, CloudWatch).
Prior work on security products, data pipelines, or high-availability systems.
Python development experience, particularly with security analysis tools and malware detection frameworks (YARA, PE analysis, binary analysis).
Familiarity with machine learning workflows, AutoML, and MLflow for model deployment and management.
Experience with binary analysis libraries (LIEF, ssdeep, TLSH) and security tooling integration.

Benefits:

Halcyon offers the following benefits to eligible employees:

• 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.

The Company reserves the right to modify or change these benefits programs at any time, with or without notice.

Base Salary Range: $120,000 - $170,000

Bonus Target: 10% In accordance with applicable state and federal laws, the range provided is Halcyon’s reasonable estimate of the base compensation for this role. The actual amount may differ based on non-discriminatory factors such as experience, knowledge, skills, abilities, and location. Base pay is one part of the total package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and equity in the Company.

We understand it takes a diverse team of highly intelligent, passionate, curious, and creative people to develop the exceptional product we are building. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity employer.

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