Jobs in the United States

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Added 5 mins ago
TT
Software Engineer, Security
True Talent Solutions Partners
Remote, United States
- $200,000 to $250,000 USD / year
Join an early-stage cybersecurity company building enterprise identity software as its first dedicated security engineer. You will partner with engineering across the product lifecycle and…
Added 7 mins ago
Lead Systems Integration Engineer - AirPods
Apple
Cupertino, CA
Added 14 mins ago
WL Field Engineer
SLB
Houston
SLB is seeking a proactive and safety-focused WL Field Engineer to join our Wireline team in Midland, Texas. In this role, you will be responsible for leading the technical execution of…
Added 15 mins ago
Mission Operations Engineer, Connected Warfare
Anduril Industries
Herndon, VA
Added 17 mins ago
Embedded Software Engineer
L3Harris Technologies
Camden, NJ
Job Title: Member Engineering Staff - Embedded Software Engineer
Added 18 mins ago
Hardware Dev Engineer I, Prime Air, Drone Engineering
Amazon.com Services LLC
Seattle, WA
We are seeking a Hardware Development Engineer I to join our Power Electronics team. In this role, you will be a contributor helping to solve difficult hardware engineering problems related…
Added 18 mins ago
Software Development Engineer
Amazon.com Services LLC
Seattle, WA · New York, NY
- 1+ years of software development engineer or related occupational experience
Added 18 mins ago
Senior CAD Engineer – Physical Verification
Micron Technology, Inc.
Boise, ID · San Jose, CA
AI alert: Candidates are encouraged to use AI tools to enhance their resume and/or application materials. However, all information provided must be accurate and reflect the candidate's true…
Added 20 mins ago
Senior Staff Software Engineer- UKG Ready Payroll
UKG
Lowell
Added 20 mins ago
Staff Software Engineer-UKG Ready Payroll
UKG
Lowell
Added 22 mins ago
Manufacturing Shift Equipment Engineer - Diffusion
Micron Idaho Semiconductor Manufacturing (Triton) LLC
Boise, ID
As a Shift Equipment Engineer in Diffusion, you will be responsible for monitoring, sustaining, and improving equipment performance while partnering with our process team members and area…
Added 22 mins ago
Principal/Sr. Principal RF Microwave/Mixed Signal Design Engineer
CORP-Corporate Office
United States
We are looking for you to join our team as a Principal or Sr. Principal RF Microwave/Mixed Signal Design Engineer based out of Baltimore (Linthicum), MD. This is full time onsite position…
Added 22 mins ago
2027 mechanical Engineer Intern- Redondo Beach CA
CORP-Corporate Office
United States
Northrop Grumman is seeking Mechanical Engineer Intern for an internship opportunity. This position will be located at our Space sector in Redondo Beach, CA.
Added 22 mins ago
Principal/Sr. Principal RF Microwave Design Engineer (Level 3 or 4)
SP - Space Components
United States
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 22 mins ago
Staff Propulsion Engineer - Spacecraft Propulsion Subsystem
CORP-Corporate Office
United States
Northrop Grumman Space Sector is seeking a Staff Propulsion Engineer – Spacecraft Propulsion Subsystem to join our Thermal, Propulsion & Cryocooler Systems (TPCS) department within our…
Added 28 mins ago
Application developer senior
Starbucks Coffee Company
Nashville
Now Brewing – Senior Application Developer, Data & Analytics Hub
Added 28 mins ago
Lead .NET / WPE Engineer (FTE / Hybrid)
NTT DATA Americas, Inc.
Charlotte
We are currently seeking a Lead .NET / WPE Engineer (FTE / Hybrid) to join our team in Charlotte, North Carolina (US-NC), United States (US).
Added 30 mins ago
HVM ME Shift Process Engineer
Micron Idaho Semiconductor Manufacturing (Triton) LLC
Boise, ID
Take on the role of ME Shift Process Engineer - Photo at Micron in Boise, ID, where you will have a key impact on our innovative manufacturing operations. You will work alongside skilled…
Added 32 mins ago
Associate Software Engineer - Hollywood (MD)
Northrop Grumman
Hollywood
Northrop Grumman is seeking an Associate Software Engineer. This position will be located at our Defense Systems Sector in Hollywood, MD.
Added 32 mins ago
Sr. Application Security Engineer
American Express Global Business Travel
Cheyenne, WY
We are seeking an experienced Senior Application Security Engineer to join our team in the corporate travel industry. This remote position requires a unique blend of application development…
Added 32 mins ago
T
Senior Engineer
TEKsystems
Cheyenne, WY
- $110,000 to $135,000 USD / year
We are seeking a Senior Engineer to join our dynamic team in Cheyenne, Wyoming. In this role, you will be responsible for client development, project management, profitability, and…
Added 33 mins ago
EG
Senior Data Engineer
Eliassen Group
Cheyenne, WY
- $101,000 to $161,800 USD / year
Our client seeks a Senior Data Engineer to own the governed transformation layer end-to-end. The role will design and build Snowflake transformation layers, migrate legacy SQL views and…
Added 34 mins ago
BR
Radar Perception Engineer
Blue River Technology
Remote, United States
- $131,000 to $228,000 USD / year
We are seeking a talented Radar Perception Engineer to join our team to develop and optimize the Radar Perception stack. You will play a critical role in enabling robust autonomy for our…
Added 35 mins ago
Water Conveyance - Project Technical Leader
CDM Smith
Providence, RI
This role is ideal for an engineer who enjoys both technical problem‑solving and hands‑on project delivery, with opportunities to grow into technical leadership and client‑facing…
Added 35 mins ago
C
Principal Security Engineer
Citizens
Johnston, RI
- $142,000 to $186,000 USD / year
As a DevSecOps Engineer, you will be responsible for the development, administration, maintenance, promotion, and support of the HashiCorp Vault identity-based secrets and encryption…

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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