Jobs in the United States

25+ jobs

Save this search

Added 1 min ago
Assistant Resident Engineer - Gateway
Arcadis
New York · Newark
Arcadis is seeking a highly skilled and motivated Assistant Resident Engineer to support one of the most iconic and consequential infrastructure initiatives in the United States - the…
Added 1 min ago
Senior Quality Engineer
COV Covidien LP
Boulder, CO
…growth and cross-functional collaboration as we work together to engineer the…
Added 1 min ago
Supplier Quality Engineer II
COV Covidien LP
Boulder, CO
…growth and cross-functional collaboration as we work together to engineer the…
Added 5 mins ago
Systems Design Engineer - Bioengineering
Thermo Fisher Scientific
Pleasanton, CA
Develop models for process behavior, throughput, performance and system trade-offs.
Added 5 mins ago
Principal or Sr Principal Electronics Engineer
Northrop Grumman
Baltimore, MD · Baltimore
We are looking for you to join our team as a Principal or Senior Principal Electronics Engineer based out of Baltimore (Linthicum), MD. This is a fulltime onsite position that offers the…
Added 5 mins ago
Principal/Sr. Principal Electronics Engineer
Northrop Grumman
Baltimore, MD · Baltimore
We are looking for you to join our team as a Principal or Sr Principal Electronics Engineer based out of Baltimore (Linthicum), MD. This is a full time onsite position that offers the 9/80…
Added 5 mins ago
Space RADAR Payload I&T Technical Advisor - Staff Engineer Systems
Northrop Grumman
Linthicum Heights, MD · Baltimore, MD · Linthicum Heights · Baltimore
…technical problems during the AI&T (Assembly Integration & Test) process of our space-based RADAR payloads which are comprised of an Electronically Scanned Array (ESA) and Processing…
Added 5 mins ago
Space RADAR Payload I&T Technical Advisor - Sr. Staff Engineer Systems
Northrop Grumman
Linthicum Heights, MD · Baltimore, MD · Linthicum Heights · Baltimore
…technical problems during the AI&T (Assembly Integration & Test) process of our space-based RADAR payloads which are comprised of an Electronically Scanned Array (ESA) and Processing…
Added 6 mins ago
N
Senior Mechanical Engineer - Defense
nLIGHT
Camas, WA
- $103,000 to $130,000 USD / year
Mechanical design engineer developing new laser systems and products
Added 6 mins ago
Software/ Principal Software Engineer
Northrop Grumman
Huntsville, AL · Huntsville
Software Engineer- Bachelor's degree in a STEM field and at least 2 years of relevant experience, or Master's degree in STEM field and 0 years of experience.
Added 6 mins ago
Software/ Principal Software Engineer
Northrop Grumman
Huntsville, AL · Huntsville
Software Engineer- Bachelor's degree in a STEM field and at least 2 years of relevant experience, or Master's degree in STEM field and 0 years of experience.
Added 6 mins ago
Principal/Sr Principal Software Engineer
Northrop Grumman
Huntsville, AL · Huntsville
Added 6 mins ago
Principal / Sr. Principal Cyber Systems Administrator
Northrop Grumman
Huntsville, AL · Huntsville
Engineer and maintain monitoring and observability solutions (e.g., Prometheus, Grafana, log aggregation, tracing) to provide real-time insight into system and network health.
Added 6 mins ago
Field Engineer 3 - Space AHT
Northrop Grumman
Vandenberg Space Force Base, CA · Vandenberg Space Force Base
Northrop Grumman Space Systems – Launch and Missile Defense Systems are seeking Principal Field Engineer in multiple locations supporting the Ground Based Midcourse Defense (GMD)…
Added 6 mins ago
Principal/Sr. Principal RF Microwave Design Engineer (Level 3 or 4)
Northrop Grumman
Goleta, CA · Goleta
Northrop Grumman’s Space Sector is seeking a Principal/Sr. Principal RF Microwave Design Engineer (Level 3 or 4) to join our MEP organization in Goleta, CA.
Added 6 mins ago
Principal Mechanical Ground Support Equipment (MGSE) Engineer (Level 3)
Northrop Grumman
Redondo Beach, CA · Redondo Beach
…for a Principal Mechanical Ground Support Equipment (MGSE) Engineer (Level 3) to join our team of highly qualified and diverse individuals. MGSE is non-flight hardware used to support the…
Added 6 mins ago
Principal Engineer - PVTP Architecture
General Motors LLC
Seattle, WA
As Principal Engineer, PVTP Architecture, you will be the senior technical authority and system architect for this ecosystem. You will set the long-term architecture and drive…
Added 7 mins ago
Equipment Agent Branch Ops Manager
Johnson Controls Inc.
United States
…practices and the Johnson Controls equipment order execution process. You will also support pre-sales activities, which include system configuration validation, HVAC equipment and/or…
Added 7 mins ago
Manager Hardware Engineering 3
Northrop Grumman
Linthicum Heights, MD · San Diego, CA · Rolling Meadows, IL · Linthicum Heights · San Diego · Rolling Meadows
…engineering transformation efforts, with focus on continuous process improvement, guidance, coaching, and…
Added 7 mins ago
Staff Test Engineer - ACP Test Lead
Northrop Grumman
El Segundo, CA · San Diego, CA · El Segundo · San Diego
Northrop Grumman Aeronautics Systems has an opening for a Staff Systems Test Engineer - Autonomous Collaborative Platforms (ACP) Test Lead to join the team of qualified individuals on our…
Added 7 mins ago
Manager Integration and Test 3
Northrop Grumman
Linthicum Heights, MD · San Diego, CA · Rolling Meadows, IL · Linthicum Heights · San Diego · Rolling Meadows
…intra-sector I&T transformation efforts, with focus on continuous process improvement, guidance, coaching, and…
Added 7 mins ago
Guidance Navigation Control (GNC) Engineer
Northrop Grumman
San Diego, CA · San Diego
Northrop Grumman Aeronautic Systems has an opening for a Guidance Navigation Control (GNC) Engineer to join our team of qualified diverse individuals. This position will be located in San…
Added 7 mins ago
Mechanical Engineer - Additive Tank Product Design & Development Technical Lead - Level 5
Northrop Grumman
Commerce, CA · Commerce
Northrop Grumman’s Space Sector is seeking a Mechanical Engineer - Additive Tank Product Design & Development Technical Lead - Level 5 to join our Mission Enabling Products MEP Team. This…
Added 7 mins ago
Electronics Engineer/ Principal Electronics Engineer – Supplier Management Team
Northrop Grumman
San Diego, CA · El Segundo, CA · Palmdale, CA · San Diego · El Segundo · Palmdale
Northrop Grumman Aeronautics Systems has an opening for Electronics Engineer/ Principal Electronics Engineer – Supplier Management Team to join the team of qualified individuals on our…
Added 7 mins ago
Industrial Engineer / Principal Industrial Engineer
Northrop Grumman
Palmdale, CA · Palmdale
Northrop Grumman Aeronautics Systems has an opening for an Industrial Engineer (Level 2) or a Principal Industrial Engineer (Level 3) to join our team of qualified, diverse individuals in…

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