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Added 15 mins ago
Senior VMware Infrastructure Engineer
HTC Global Services Inc
Columbia, SC
Job Title - Senior VMware Infrastructure Engineer Position Overview
Added 17 mins ago
Staff SW Systems Engineer
Extreme Networks, Inc.
Seattle, WA
Title of position: Staff Software Systems Engineer
Added 27 mins ago
Network Consulting Engineer
Cisco
Denver, CO
Our Network Consulting Engineer team is dedicated to delivering innovative Cisco networking solutions that drive customer success and business transformation. We collaborate closely with…
Added 27 mins ago
Software Engineer III - React/Native
Modivcare
Denver, CO
This position is responsible for the design, development and support of new software applications, works with business owners and IT support staff on assigned project(s) to create and…
Added 40 mins ago
W
Senior Software Engineer
Walmart
SUNNYVALE, CA
- $117,000 to $234,000 USD / year
…consumer facing features in the Walmart Canada Mobile App using software languages Kotlin, Java, and XML. Create and maintain internal shared libraries in Android SDK for the global app on…
Added 41 mins ago
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Staff Software Engineer
Walmart
SUNNYVALE, CA
- $185,587 to $286,000 USD / year
…rapid onboarding of payment types including prepaid cards, dual-network debit cards, digital rewards, and buy-now-pay-later providers. Design and Implement event-driven, asynchronous…
Added 49 mins ago
Solution Engineer – Consumer Services
Lilly
Indianapolis, IN
As a Solution Engineer, you design, develop, test, and maintain scalable software applications and systems that deliver secure, high-performance solutions meeting business and technical…
Added 1 hour ago
OptoMechanical Design engineer
KLATencor Corporation
Ann Arbor, MI
…Spares Supply Chain Management, Field Operations, Engineering, Product Training, Digital Solutions and Analytics, and Technical Product Support. Our services organization maximizes the…
Added 2 hours ago
Senior Advanced Manufacturing Engineer – Test
Haier US Appliance Solutions, Inc.
Louisville, KY
Join our Advanced Manufacturing Engineering (AME) Industry 4.0 team as a Senior Advanced Manufacturing Engineer – Test, where you will support the design, implementation, and improvement of…
Added 3 hours ago
Staff Solutions Engineer - FDSE - Splunk (Remote)
Cisco Systems, Inc.
Remote, United States
This team will work closely with Sales, Product and Technology, Software Development, Customer Success and Partners to maximize customer focus, leveraging the power of Cisco team and…
Added 3 hours ago
Staff Solutions Engineer - FDSE Public Sector - Splunk (Remote)
Cisco Systems, Inc.
Remote, United States
This team will work closely with Sales, Product and Technology, Software Development, Customer Success and Partners to maximize customer focus, leveraging the power of the Cisco team and…
Added 3 hours ago
C
Software QA Engineer II (Full Time) - United States
Cisco
Richardson, TX · San Jose, CA · Milpitas, CA
- Full-time
As a QA / Automation Engineer, you will contribute to validating Cisco’s wireless platforms by writing test plans, developing automation, and analyzing system behavior. You will gain…
Added 3 hours ago
C
Software QA Engineer I (Full Time) - United States
Cisco
Richardson, TX
- Full-time
As a QA / Automation Engineer, you will contribute to validating Cisco’s wireless platforms by writing test plans, developing automation, and analyzing system behavior. You will gain…
Added 3 hours ago
Software Engineering Technical Leader
Cisco Systems, Inc.
Milpitas, CA
Cisco Node Visuals (CNV) builds interactive network and geographic visualizations for Cisco products. We help users understand complex enterprise network data across physical, virtual, and…
Added 3 hours ago
Software Engineer
Cisco Systems, Inc.
Sierra Vista, AZ
The application window is expected to close on: 11/03/20262025407 – Software Engineer (Hybrid)
Added 3 hours ago
Software Engineer, Hybrid
Cisco Systems, Inc.
RTP, NC · San Jose, CA
Identifies and recommends improvements to the software development lifecycle, Agile practices, and product innovation.
Added 4 hours ago
Principal Engineer & Technical Lead - Azure / Containers
Aperia
Dallas, TX
Title options: Principal Engineer, Lead Software Engineer / Technical Lead – Cloud Platforms, or Staff Engineer – Azure.
Added 5 hours ago
GenAI Engineer (LLM)
State Farm
Bloomington, IL · Richardson, TX · Dunwoody, GA · Tempe, AZ
We are looking for a skilled Lead Software Engineer with strong expertise in Python backend development and AI/LLM integration. In this role, you will be responsible for designing,…
Added 5 hours ago
Senior Staff Engineer - Agentic Identity
Cisco Systems, Inc.
Remote, United States
…identity and access challenges into resilient, enterprise-grade software that protects and powers the next generation of AI…
Added 5 hours ago
Senior Solutions Engineer - FDSE Public Sector - Splunk (Remote)
Cisco Systems, Inc.
Remote, United States
This team will work closely with Sales, Product and Technology, Software Development, Customer Success and Partners to maximize customer focus, leveraging the power of the Cisco team and…
Added 5 hours ago
Principal Software Engineer, AI Defense (Hybrid)
Cisco Systems, Inc.
Milpitas, CA
As a Principal Software Engineer for AI Defense, you will serve as the chief technical authority driving the end-to-end security architecture for Cisco's enterprise AI ecosystems. You will…
Added 5 hours ago
DevOps Engineer
Cisco Systems, Inc.
Remote, United States
…activities in local and CI/CD environments. These platforms give product development teams self-service systems to build, test, and deploy cloud-native services. The team partners with…
Added 5 hours ago
VI
RF Payload Systems Engineer
Viasat, Inc.
Tempe, AZ
- $176,000 to $264,000 USD / year
8+ years' experience as an RF/Systems Engineer, including hands-on design, troubleshooting, integration, and test of RF hardware at the PWA, module, unit, and system level
Added 7 hours ago
ST
Senior Embedded Software Engineer
Silvus Technologies, Inc.
Los Angeles, CA
- $140,000 to $200,000 USD / year
Silvus is seeking a full-time Senior Embedded Software Engineer to join our Engineering Group, reporting to the Director of Software Engineering. The successful individual in this role will…
Added 7 hours ago
ST
Embedded Software Engineer
Silvus Technologies, Inc.
Los Angeles, CA
- $38.46 to $52.88 USD / hour
Silvus is seeking an Embedded Software Engineer who will participate in the development of Silvus’ MANET radios and advanced research projects. This position reports to the Director of…

Blacksmith

Systems Security Engineer

New York City, NY, United States

$225,000 to $300,000 USD / year

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Job details

Pay: $225,000 to $300,000 USD / year
Posting language: English
Posted: Oct 30, 2026

Original job description

About Blacksmith

We started by building infrastructure to run CI workloads really fast. Our first product helps companies run GitHub Actions substantially faster and cheaper by owning and operating our own global fleet of bare-metal machines rather than renting generic cloud VMs.
Today, we orchestrate tens of millions of Firecracker VMs each week, running CI for 10,000+ companies and tens of millions in ARR. We’ve grown 20x so far in 2026.
We operate thousands of bare-metal machines across multiple regions, regularly schedule 300k+ vCPUs concurrently, and run a petabyte-scale Ceph cluster that we manage ourselves.
We’ve raised $125M from Seed to Series C, led by Sequoia, Google Ventures (GV) & Peak XV Partners, and we’re intentionally building a small, but exceptional team.
Blacksmith was founded by a team with deep systems and scaling experience, including building search/ads infrastructure at Faire, and operating large distributed systems at Cockroach Labs. Our GTM is led by Jon Boyer, formerly Head of Sales at Zapier.
We're now extending the same CI infrastructure into a broader platform: running agent sandboxes at scale and building our own background coding agent on top of it.

The role at Blacksmith

We are looking for a Systems Security Engineer to build and operate security controls at Blacksmith. Your primary focus will be our bare-metal fleet, with responsibility extending to our AWS control plane, application services and the broader organization.

This is a hands-on engineering role. You'll work alongside our systems engineers to harden production systems, strengthen workload isolation, and investigate and remediate security issues. You'll partner with our Security Lead to translate security priorities into engineering work.

What you’ll be doing

Identify, prioritize and remediate security risks across our bare-metal fleet, AWS control plane, application services and the broader organization.
Strengthen tenant isolation, host hardening, network boundaries and access controls across our platform.
Build and operate automated security controls for secure configuration, vulnerability remediation, intrusion detection and response, validating their effectiveness without compromising production reliability or performance.
Investigate and respond to security incidents, driving remediation through to completion.
Partner with engineering and IT to establish secure defaults and practical security standards across systems and workflows, balancing security, reliability and usability.

You’re a good fit if you have

Strong Linux systems experience, with the ability to debug production issues across the kernel, networking and storage stack.
A practical understanding of security fundamentals, including least privilege, defense in depth and threat modeling, and the ability to translate risks into technical solutions.
Experience with virtualization and Linux isolation primitives, such as Firecracker, KVM, namespaces and cgroups, and an understanding of their security boundaries and tradeoffs.
An understanding of storage access controls, tenant isolation and secure data deletion.
An understanding of how to use eBPF for runtime security monitoring, including observing process, file and network activity to detect suspicious behavior.
Experience securing production AWS environments, particularly IAM, networking and audit logging.
The ability to write and debug production code in Go, Rust, C, C++ or similar, and automate security changes through configuration management and infrastructure as code.
Strong comfort with agent-driven development and debugging, including directing coding agents, reviewing their changes and validating correctness and security.
A track record of turning ambiguous problems into practical engineering solutions, owning implementation through production rollout, and explaining technical tradeoffs to engineers, leadership and non-technical partners.

We welcome candidates from security engineering, systems engineering and SRE backgrounds. You should bring strong systems fundamentals and a demonstrated interest in securing the infrastructure you operate.

Bonus

You've found or reported CVEs, done container or VM escape research, or competed in CTFs.
You've secured multi-tenant infrastructure running untrusted workloads, such as CI runners, cloud compute or agent sandboxes.
You've built or extended eBPF-based detection tooling, turning runtime telemetry into actionable alerts and investigations.
You've secured software delivery pipelines, including build isolation, artifact signing, image provenance or secrets handling.
You've operated or secured distributed storage systems such as Ceph or MinIO in production.
You've secured macOS infrastructure running untrusted workloads.

Compensation and benefits

Medical, Vision, and Dental insurance.
Competitive base + equity.
401K match.
Unlimited PTO.
Annual offsite.
Early-exercise stock options.
12 weeks fully paid parental leave (US).

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More about this job

Skills

AWS
Security threats
Security regulations
Linux
Identity and access management
Go
Rust
C
C++
Infrastructure as code
Debugging
Leadership
Research

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