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Added 15 mins ago
Cloud Engineer- Hybrid 2x a week onsite
Yoh Services
Audubon, PA
Added 15 mins ago
Cloud Engineer, Specialist (AWS/Azure)
Vanguard
Wayne, PA
Implement infrastructure-as-code (IaC), CI/CD pipelines, and automation to improve deployment consistency, scalability, and operational efficiency.
Added 15 mins ago
Lead Engineer - Operational Technology Network Security
AmerisourceBergen
Conshohocken, PA
…animals everywhere. Apply today! Job Details Summary: The Lead Engineer - Operational Technology Network Security is responsible for designing, implementing, maintaining, and continuously…
Added 16 mins ago
O
Lead Principal Software Development Engineer
Oracle
Harrisburg, PA
- $135,200 to $306,400 USD / year
As a Sr. Principal Software Development Engineer in the Oracle Cloud Infrastructure (OCI) Core Platform division, you will play a critical leadership role in the architecture, evolution,…
Added 16 mins ago
O
Lead Principal Site Reliability Engineer - (work in Vienna VA location)
Oracle
Harrisburg, PA
- $96,300 to $264,100 USD / year
We are seeking a highly motivated Site Reliability Engineer (SRE) to support a strategic customer's cloud platform and mission-critical applications. The SRE will be responsible for…
Added 16 mins ago
AT
Principal Software Engineer - (Reston or Cambridge)
Akamai Technologies, Inc.
Harrisburg, PA
- $169,300 to $304,700 USD / year
…scalable, accessible, and affordable for all. We provide the infrastructure and services that enable developers to build next-generation applications. We take ownership of the design and…
Added 16 mins ago
Site Reliability Engineer
Highmark Health
Harrisburg, PA
…role blends software engineering, clinical engineering, and security principles with a deep understanding of healthcare operations to minimize downtime, improve system resilience, and to…
Added 16 mins ago
Senior Technical IT Storage Engineer
Highmark Health
Harrisburg, PA
…for contributing to our technical IT ecosystem that includes infrastructure, systems, networks, applications, integrations, etc. They will work closely with other technical IT…
Added 16 mins ago
Google Infrastructure and Security Lead Architect
Deloitte
Philadelphia, PA · Pittsburgh, PA
As a Google Cloud (GCP) Infrastructure & Security Lead Architect, you will serve as a strategic technical leader and trusted advisor for our enterprise clients, guiding them through complex…
Added 16 mins ago
Google AI Architect
Deloitte
Pittsburgh, PA · Philadelphia, PA
…solutions in software, data, AI, network, and hybrid cloud infrastructure. These solutions are powered by engineering for business advantage, transforming mission-critical operations. We…
Added 16 mins ago
HPC AI Solution Architect (S2S)
Deloitte
Philadelphia, PA
As a Lead Cloud Integrated Infra Engineer on the Silicon2Service team in Deloitte's AI & Engineering practice, you will design and drive deployment of fully integrated architectures for…
Added 16 mins ago
ConvergeCONSUMER - Product Installation Engineer - Products & Platforms
Deloitte
Pittsburgh, PA · Philadelphia, PA
Are you a hands-on cloud engineer who thrives on turning complex deployments into smooth, repeatable rollouts? As a Product Installation Engineer with ConvergeCONSUMER, you'll bring our…
Added 16 mins ago
Senior Software Engineer – Splunk Platform Authorization
Cisco
Philadelphia, PA
Join Cisco’s Splunk Integrated Core Platform team and help shape the architecture behind the authorization infrastructure that powers Splunk’s enterprise observability and security platform.
Added 16 mins ago
Software Engineer – Splunk Platform Authorization
Cisco
Philadelphia, PA
Join Cisco’s Splunk Integrated Core Platform team, where we build and maintain the critical authorization infrastructure powering Splunk’s enterprise observability and security platform.
Added 16 mins ago
Cyber Operate Manager - GCP Cloud DevOps Engineer
Deloitte
Mechanicsburg, PA · Pittsburgh, PA · Philadelphia, PA
Deloitte is seeking a Lead Managed Services Engineer II to design, automate, and operate enterprise-scale cloud capabilities that support clients' critical cyber assets. In this role, you…
Added 16 mins ago
Cyber Operate Manager - Identity Security Architect & Product Engineering
Deloitte
Mechanicsburg, PA · Philadelphia, PA · Pittsburgh, PA
Join Deloitte as a Lead Managed Services Engineer II and help design, engineer, and deploy identity security capabilities across enterprise environments. You will advance attack path…
Added 45 mins ago
Site Reliability Engineer
Highmark Health
Little Rock, AR
…role blends software engineering, clinical engineering, and security principles with a deep understanding of healthcare operations to minimize downtime, improve system resilience, and to…
Added 55 mins ago
Senior Solutions Engineer - Kansas, Missouri
NetApp
St Louis, MO
Behind every great sales rep is a Solutions Engineer who makes the magic happen. As a Commercial Solutions Engineer, you will partner closely with Commercial Account Managers to drive…
Added 56 mins ago
O
Lead Principal Site Reliability Engineer - (work in Vienna VA location)
Oracle
Jefferson City, MO
- $96,300 to $264,100 USD / year
We are seeking a highly motivated Site Reliability Engineer (SRE) to support a strategic customer's cloud platform and mission-critical applications. The SRE will be responsible for…
Added 56 mins ago
CC
Senior Infrastructure Security Engineer
Centene Corporation
Jefferson City, MO
- $87,000 to $161,300 USD / year
Position Purpose: The Senior Infrastructure Security Engineer is responsible for operating and maturing Centene’s Attack Surface Management (ASM) and Breach Attack Simulation (BAS) programs…
Added 56 mins ago
Site Reliability Engineer
Highmark Health
Jefferson City, MO
…role blends software engineering, clinical engineering, and security principles with a deep understanding of healthcare operations to minimize downtime, improve system resilience, and to…
Added 1 hour ago
GA
Senior Systems Engineer SME Cloud Infrastructure & DevSecOps TS/SCI
Geospatial And Cloud Analytics Inc
Qua, VA
- $170,000 to $190,000 USD / year
We are seeking a highly skilled Senior Systems Engineer Subject Matter Expert (SME) to join our team supporting the Naval Criminal Investigative Service (NCIS) in Quantico, Virginia. The…
Added 1 hour ago
GA
Senior Software Engineer Containerized Applications TS/SCI
Geospatial And Cloud Analytics Inc
Qua, VA
- $170,000 to $190,000 USD / year
We are seeking a highly skilled Senior Software Engineer / Containerized Applications Specialist to join our team supporting the Naval Criminal Investigative Service (NCIS) in Quantico,…
Added 1 hour ago
Supervisory General Engineer
U.S. Army Intelligence and Security Command
Fort Belvoir, VA
…1400.25. This position is with the U.S. Army Intelligence and Security Command, Associate Chief of Staff, G-4 located at Fort Belvoir, Virginia. Responsibilities Serve as primary advisor to…
Added 1 hour ago
Installation Engineer, FSE
CompQsoft, Inc.
Leesburg, VA
…ACSI, MIDF, PIDF, Lenel ACS, Milestone, and Bosch/Hirsch IDS. - Infrastructure and Relocation: Coordinate the physical movement of all systems from Building OT2 to OT3, providing all…

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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