Jobs in the United States

25+ jobs

Save this search

Added 5 mins ago
Senior Network Engineer (Active Top Secret Clearance with SCI Eligibility Required) - Sign-On Bonus Up to $10,000
Akima, LLC
Honolulu, HI
ASE is looking for a Senior Cisco Network Engineer to work in Honolulu, HI. The Senior Cisco Network Engineer is a pivotal role, providing operational knowledge and support to the…
Added 5 mins ago
Senior Network Engineer (Active Top Secret Clearance with SCI Eligibility Required) - Sign-On Bonus Up to $10,000
Akima, LLC
Honolulu, HI
ASE is looking for a Senior Cisco Network Engineer to work in Honolulu, HI. The Senior Cisco Network Engineer is a pivotal role, providing operational knowledge and support to the…
Added 5 mins ago
O
Principal Core Infrastructure Engineer
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
As a Principal Software Engineer, you will lead the design and development of FastConnect control plane services that manage a globally distributed fleet of networking infrastructure. You…
Added 7 mins ago
Manufacturing Engineer – Business Process Management
Blue Origin Personnel, LLC
Space Coast, FL
We are seeking a dynamic Manufacturing Engineer – Business Process Management to join our New Glenn Manufacturing Engineering (ME) team at Blue Origin. This role will drive manufacturing…
Added 18 mins ago
Powerplant Operator II Licensed
Medxcel
Racine, WI
Medxcel is here to lead the transformation of healthcare facilities management by incorporating a new approach to providing services. Created by healthcare, for healthcare, we have a…
Added 20 mins ago
AI Content Creator
HIGHSCALE
Remote, United States
Speed up the pre-production process by visualizing lighting setups and set designs virtually.
Added 20 mins ago
AI Content Creator
HIGHSCALE
Remote, United States
Speed up the pre-production process by visualizing lighting setups and set designs virtually.
Added 20 mins ago
AI Content Creator
HIGHSCALE
Remote, United States
Speed up the pre-production process by visualizing lighting setups and set designs virtually.
Added 21 mins ago
Sr. Project Management Specialist - Value Stream - CST - Lafayette, Colorado (On-site)
Medtronic
Boxborough, MA
…environment of belonging, and collaborate to inspire as we engineer the…
Added 21 mins ago
Instrumentation and Controls Engineer
Kelly Services
Watertown, MA
A fast-growing cleantech company in Watertown, MA is seeking an Instrumentation & Control Systems Engineer to help scale an innovative critical minerals extraction technology. The company…
Added 21 mins ago
Industrial Engineer
Siemens
Hingham, MA
We are looking for an Industrial Project Engineer. This position will be based in Hingham, MA.
Added 21 mins ago
Sr. Principal Systems Engineer - Medical Device
Medtronic
Newton, MA
As a Sr. Principal Systems Engineer, you will provide technical leadership for system integration and refine your systems engineering skills to conduct interface testing, both within the…
Added 21 mins ago
Senior Energy Engineer
Trane Technologies
Wilmington, MA
Grow & Expand Your Technical Leadership: Lead advanced energy audits, shape investment-grade audits (IGAs), and guide project teams across our Energy Services portfolio.
Added 21 mins ago
Sr Principal Analog Design Engineer
Qorvo US, Inc.
Chelmsford, MA
…connect, protect and power our planet. Senior Principal Analog Engineer Responsibilities Responsible for the design of highly-integrated microwave and millimeter-wave analog blocks in…
Added 21 mins ago
Senior Supplier Quality Engineer
Zoll Medical Corporation
Chelmsford, MA
…to be a part of ZOLL!Job SummaryThe Senior Supplier Quality Engineer will be a leader on the Supplier Quality team, expected to be subject matter expert with regard to Supplier Quality…
Added 21 mins ago
Project Manager R&D
Zoll Medical Corporation
Chelmsford, MA
Lead the execution of assigned product development programs in accordance with established processes and procedures.
Added 21 mins ago
Principal Systems Engineer
Butler America
Woburn, MA
…Sensors Center is currently looking for a Principal Systems Engineer to support the Systems Engineering (SE) Long Range Radars (LRR) department. The SE LRR department delivers cutting-edge…
Added 21 mins ago
BA
Senior System Engineer
Butler America
Woburn, MA
- $80 to $95 USD / hour
Senior System Engineer Location: Woburn, MA Job ID: #73408 Pay Range: $80-95 an hour DOD Secret Clearance 12 month contract Description:
Added 21 mins ago
Senior Principal Systems Engineer
Butler America
Woburn, MA
Senior Principal Systems Engineer Location: Woburn, MA Job ID: #73455 Pay Range: $107-125 ph (W2) Duration: 12 mos Job Description
Added 21 mins ago
Cloud Engineer II- AWS
Honeywell Technologies
Framingham, MA
Do you enjoy working from the customer perspective and diving deep on issues? As a system development engineer, you will be responsible for the overall health of our AWS cloud-based managed…
Added 21 mins ago
FM
Sr Principal Network Engineer
Fresenius Medical Care
Waltham, MA
- $131,900 to $219,800 USD / year
The Lead Networking Engineer utilizes in-depth knowledge of local area networks (LAN) and wide area networks (WAN) to provide expert input regarding the installation and support of the…
Added 21 mins ago
Staff Overhead Transmission Line Structural Engineer Job Details | Black & Veatch Family of Companies
Black & Veatch
Burlington, MA
Staff Overhead Transmission Line Structural Engineer
Added 21 mins ago
Lead Software Delivery Engineer
GE Vernova
Cambridge, MA
The Lead Software Delivery Engineer (DE) should have the technical software skills to lead the software services delivery in the time, quality and the budget required for the projects while…
Added 21 mins ago
Senior Manager, Full-stack Engineer-People Leader
Capital One
Cambridge, MA
Lead a portfolio of diverse technology projects and a team of developers with deep experience in distributed microservices, and full stack systems to create solutions that help meet…
Added 21 mins ago
Software Engineer - Product (Technical Leadership)
Meta
Boston, MA
Software Engineer - Product (Technical Leadership) Responsibilities:

Blacksmith

Systems Security Engineer

New York City, NY, United States

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

Apply About employer

Applications open in a new tab.

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).

Apply About employer

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

Report this job