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Added 6 mins ago
G
Maintenance Engineer
GPAC
St Louis Park, MN
- $34 to $41 USD / hour
In this role, you'll support specialized milling and food processing systems used for product development, process optimization, and customer trials. You'll troubleshoot equipment, perform…
Added 7 mins ago
Banking Center Senior Relationship Banker, Bethany, CT
F8F Santander Bank N.A.
United States
Support segmentation strategy with existing clients by implementing sales, retention, and other bank initiatives to support Banking Center’s growth and profitability objectives.
Added 7 mins ago
Digital Business Analyst
The Freeman Company
IL · NV · TX
Partner with product managers, engineers, designers, program managers, and stakeholders to refine requirements and support solution scoping across systems.
Added 7 mins ago
G
Maintenance Engineer
GPAC
Wayzata, MN
- $34 to $41 USD / hour
In this role, you'll support specialized milling and food processing systems used for product development, process optimization, and customer trials. You'll troubleshoot equipment, perform…
Added 8 mins ago
Manager Field Service
Twenty-Six Defense
Tucson, AZ
Aligns service team objectives with departmental goals to support contractual commitments and operational readiness.
Added 9 mins ago
Automation Engineer
Valley Queen
Milbank, SD
This position is responsible for designing, implementing, and maintaining automated systems that enhance production efficiency, food safety, and product quality. The ideal candidate will…
Added 9 mins ago
IT INFRASTRUCTURE SERVICES MANAGER
The GEO Group
Boulder, CO
The IT Infrastructure Services Manager leads the design, deployment, and support of cloud and on-premises infrastructure, including networks, servers, and telecom systems. Manages a team of…
Added 10 mins ago
G
Maintenance Manager
GPAC
Roseville, IL
- $110,000 to $115,000 USD / year
Troubleshoot mechanical, electrical, hydraulic, and conveyance systems
Added 11 mins ago
D
Retail Support Specialist
DSI
Salinas, CA
- $25 USD / hour
The Retail Support Specialist (RSS) delivers hands-on, frontline support to AT&T customers inside high-traffic national retail environments. In this role, you will engage directly with…
Added 12 mins ago
Packaging Engineer - Burton Area
The Pivot Group Network
Burton · Burton, MI
Support line trials during product launches and scale-ups.
Added 12 mins ago
Laser Weld Engineer - Caro Area
The Pivot Group Network
Caro · Caro, MI
Support fixture and tooling design for laser weld applications.
Added 12 mins ago
Value Stream Manager - Livonia Area
The Pivot Group Network
Livonia · Livonia, MI
Experience with ERP systems and production scheduling software.
Added 12 mins ago
Value Stream Manager - Mount Clemens Area
The Pivot Group Network
Mount Clemens · Mount Clemens, MI
Experience with ERP systems and production scheduling software.
Added 12 mins ago
Supplier Quality Engineer - Caro Area
The Pivot Group Network
Caro · Caro, MI
Support new product launches by qualifying new suppliers.
Added 12 mins ago
Training Manager / Coordinator - Cheboygan Area
The Pivot Group Network
Cheboygan · Cheboygan, MI
Plan and schedule training sessions for production and support staff.
Added 12 mins ago
Design Engineer - Detroit Area
The Pivot Group Network
Detroit · Detroit, MI
Support prototype builds and test new components.
Added 12 mins ago
Value Stream Manager - Croswell Area
The Pivot Group Network
Croswell · Croswell, MI
Experience with ERP systems and production scheduling software.
Added 12 mins ago
UO
UMC Director
University of Colorado Denver
Boulder, CO
- $129,825 to $144,250 USD / year
…implementation, and assessment of facilities, programs and services that support the educational, cultural, social, and recreational needs of students and the broader CU Boulder community.…
Added 12 mins ago
TU
Sr Regional Marketing Manager: Marketing Operations & Field Programs Manager
T-Mobile USA, Inc.
Denver, CO
- $82,300 to $148,500 USD / year
…in how the field team accesses tools, materials, and vendor support - and build the processes or systems to remove them. This includes onboarding new MAMs and Regional Field Leads to…
Added 12 mins ago
UO
Marketing and Communications Specialist
University of Colorado Denver
Boulder, CO
- $58,200 to $67,500 USD / year
Provide communications support for major events such as lectures, conferences, alumni programs, commencement, orientation and signature law school events.
Added 12 mins ago
CA
Product Owner (TrademarkVision - Intellectual Property)
Clarivate Analytics
Centennial, CO
- $31,533 USD / year
Support the Product Director and their team in the delivery and ongoing maintenance of Global IP office search systems, powered by Clarivate technology
Added 12 mins ago
DH
Internal Communications Specialist III
Denver Health
Denver, CO
- $63,500 to $95,400 USD / year
…planning and development of new communication vehicles. Provides support and backup to the Internal Communication Manager.Essential…
Added 12 mins ago
DH
Oral Surgery and Maxillofacial Surgeon
Denver Health
Denver, CO
- $339,300 to $466,200 USD / year
Able to effectively manage and direct medical staff support activities while providing quality medical care.
Added 12 mins ago
DH
Radiology Technologist II
Denver Health
Denver, CO
- $30 to $43 USD / hour
…imaging techniques within Fluoroscopy.Provide cross coverage support when staffing needs arise.Acquire and maintain super user status for specialized perioperative service imaging needs.…
Added 12 mins ago
DH
Nephrology and Hypertension Physician
Denver Health
Denver, CO
- $213,300 to $290,800 USD / year
Able to effectively manage and direct medical staff support activities while providing quality medical care.

Amazon

Senior Applied Scientist, Leo Space Security

Arlington, VA, United States
Herndon, VA, United States

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Job details

Posting language: English
Posted: Nov 5, 2026

Original job description

Description

Amazon Leo is a constellation of Low Earth Orbit satellites that will provide low-latency, high-speed broadband network connectivity to unserved and underserved communities around the world.

We are looking for an Applied Scientist to be a founding scientist on the Engineering and R&D team within Leo Infrastructure and IP Security. The team defends the manufacturing lines, launch sites, and global ground infrastructure behind the constellation from the most sophisticated threat actors on the planet. These requirements create open scientific problems at the intersection of agentic AI, real-time stream processing, graph-based reasoning, and behavioral analytics. You will build the science behind a neurosymbolic reasoning platform and the models that detect the behavior of sophisticated threat actors. This is an R&D role with a production mandate, where you define the problem rather than solve a pre-scoped one, and every model, detection, and agent workflow you build becomes the system Leo's security teams use to protect the constellation.

#### Export Control Requirement

Due to applicable export control laws and regulations, candidates must be a U.S. citizen.

Key job responsibilities

Design and implement scalable, production-grade neurosymbolic systems that integrate symbolic reasoning over graph-based knowledge representations with LLM agents to deliver reliable, verifiable security outcomes.
Design and run reinforcement learning and fine-tuning pipelines (GRPO, PPO, DPO) to optimize language models for security reasoning, triage, and detection-authoring tasks.
Build behavioral and statistical models that detect threat actor behavior, and design the evaluation frameworks that measure model performance against that behavior before trusting a model in production.
Design and build multi-agent systems that autonomously triage, enrich, and contain security events, including the constrained reasoning, safety guardrails, and validation mechanisms that make automated decisions trustworthy at scale.
Own the end-to-end science lifecycle, from research and experimentation through production deployment, defining the metrics that measure system performance and real-world security impact.
Advance the state of the art through publications at top-tier venues, patents, or open-source contributions, and shape the scientific agenda and research culture from day one.

A day in the life

You will move between research and production in the same week: framing an ambiguous security problem as a scientific question, prototyping an approach, and partnering with software engineers to ship it as a capability the platform runs continuously. Security engineers on your team translate threat intelligence into the adversary behaviors that matter; you build the models that detect those behaviors and evaluate model performance against them. You will obsess over the two latencies that define the platforms, the time from event to detection and the time from detection to containment action, and design agents and detections that drive both down. You will backtest candidate detections against retained telemetry, review evaluation results before a model or agent capability graduates to automated execution, and deliver scientific artifacts that ship.

About the team

Leo Infrastructure and IP Security protects the people, facilities, hardware, and supply chain behind a global satellite constellation. The Engineering and R&D team within this organization builds the platforms and tooling the security pillar teams operate on, moving security operations from manual triage to correlation-based detection, automated response, and agentic AI. The team is composed of applied scientists, software engineers, and security engineers working across physical and digital security domains.

#### Inclusive Team Culture

In Amazon Security, it's in our nature to learn and be curious. Ongoing DEI events and learning experiences inspire us to continue learning and to embrace our uniqueness. Addressing the toughest security challenges requires that we seek out and celebrate a diversity of ideas, perspectives, and voices.

#### Training & Career Growth

We're continuously raising our performance bar as we strive to become Earth's Best Employer. That's why you'll find endless knowledge-sharing, training, and other career-advancing resources here to help you develop into a better-rounded professional.

#### Work/Life Balance

We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home, which is why flexible work hours and arrangements are part of our culture. When we feel supported in the workplace and at home, there's nothing we can't achieve.

Basic Qualifications

3+ years of building machine learning models for business application experience
PhD, or Master's degree and 6+ years of applied research experience
Experience programming in Java, C++, Python or related language
Experience with neural deep learning methods and machine learning

•

Experience with graph algorithms, knowledge graphs, unsupervised learning (clustering, dimensionality reduction, anomaly detection), NLP, and embedding-based retrieval

•

Experience designing evaluation frameworks for AI systems where ground truth requires human judgment, including staged rollouts, A/B testing, and expert feedback loops

Preferred Qualifications

Experience with modeling tools such as R, scikit-learn, Spark MLLib, MxNet, Tensorflow, numpy, scipy etc.
Experience in building quantitative solutions as a scientist or science manager
Experience in one or more of the following domains: access- control system and methodology, network security, application- and system-development security, security architecture and models, cryptography, and operations security

•

Experience with terabyte-scale stream processing and real-time correlation of heterogeneous event sources

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Experience with cost and latency optimization for LLM-based systems (token reduction, schema optimization, deterministic offloading)

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Publications in applied ML, graph analytics, agentic AI, or security analytics

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits .

USA, VA, Arlington - 167,100.00 - 226,100.00 USD annually

USA, VA, Herndon - 167,100.00 - 226,100.00 USD annually

USA, WA, BELLEVUE - 167,100.00 - 226,100.00 USD annually

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