Find work in the United States.

A simpler way to find your next job.

Jobs in the United States

25+ jobs

Save this search

Added 5 mins ago
Sales Lead Ann Taylor Factory Greenway Station Middleton, Wi
Premium Brands Opco LLC
Store 2277-Greenway Station-ANN-Middleton, WI
…the associate experience. You'll collaborate with the Store Manager to become an expert on store functions, so you are ready to step in as manager when…
Added 9 mins ago
Territory Manager, Pioneer (TX)
Vylor
TX
…of agriculture – leading breakthroughs in the innovation and application of science and technology that will better the lives of people all over the world and fuel the progress of…
Added 13 mins ago
AA
Intern - Financial Planning & Analysis (Summer 2027)
Alaska Airlines
SeaTac, WA
- $25 USD / hour
This internship is designed solely to provide you with skill development and valuable work experience. While the internship provides helpful experience for future opportunities at Alaska…
Added 13 mins ago
AA
Intern - Software Delivery Platform (Summer 2027)
Alaska Airlines
SeaTac, WA
- $30 USD / hour
This internship is designed solely to provide you with skill development and valuable work experience. While the internship provides helpful experience for future opportunities at Alaska…
Added 13 mins ago
Strategic Performance Manager - Plant Engineering
Amentum
Richland, WA
…execution of organizational objectives. The Strategic Performance Manager collaborates widely across engineering, operations and projects, and supports organizations to monitor progress,…
Added 13 mins ago
AA
Intern - BI Analyst (Summer 2027)
Alaska Airlines
Renton, WA
- $30 USD / hour
This internship is designed solely to provide you with skill development and valuable work experience. While the internship provides helpful experience for future opportunities at Alaska…
Added 13 mins ago
Sales Operations Lead - Aviation, Amazon Leo
Amazon
Bellevue, WA
Lead territory planning, account segmentation, and quota development for the Aviation team
Added 13 mins ago
Senior Program Manager, Amazon Flex BOSS
Amazon
Bellevue, WA
…experience for Amazon customers and Delivery Partners. As a Program Manager for NA Flex Business Optimization, Strategy, and Scaling (B.O.S.S.)Team, you will own strategy and initiatives…
Added 13 mins ago
Sr Progrm Mgr Spl Returns, Worldwide Returns and Recommerce - Reverse Logistics Services
Amazon
Bellevue, WA
…opportunities where you may need to flex and operate as a program manager one day, a product owner the next, and then as project leader to push a project to the finish…
Added 13 mins ago
Senior Applied Scientist, Leo Space Security
Amazon
Bellevue, WA
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,…
Added 13 mins ago
Finance Manager, AWS Real Estate
Amazon
Seattle, WA
Amazon Web Services (AWS) seeks a Finance Manager to lead strategic financial initiatives for our Real Estate Finance team. This high-visibility role offers the opportunity to directly…
Added 13 mins ago
Assistant Nurse Manager
Veterans Affairs, Veterans Health Administration
Seattle, WA
Added 13 mins ago
Registered Nurse Manager
Veterans Affairs, Veterans Health Administration
Seattle, WA
Added 14 mins ago
Human Resources Manager
CEL - Critical Power
Williamsburg, VA
Reporting to the Director of Human Resources – USA, the HR Manager will manage day-to-day HR operations and serve as a trusted adviser on employee relations, performance management,…
Added 18 mins ago
CE
Seasonal Sales Associate-Woodburn Outlets
Claires Essentials LLC
Woodburn, OR
- $15.55 to $16.55 USD / hour
Upon submitting your application, you can expect an update within 5 days. If the hiring manager wants to proceed with your application, the process will involve a face-to-face interview in…
Added 31 mins ago
A
Part Sales Manager – Full Time
AutoZone
Sinking Spring, PA
- Full-time
…executing store operations with excellence. Under the Store Manager’s guidance, MITs lead by example, demonstrating initiative and strong leadership. Through operational oversight and team…
Added 33 mins ago
Wealth Relationship Manager - Selma
Citigroup
Hanford, CA
…Applies in-depth disciplinary knowledge, contributing to the development of new techniques and the improvement of processes and workflow for the area or function. Integrates subject matter…
Added 33 mins ago
T
Procurement Training & Contract Management Advisor
TEKsystems
Rosemead, CA
- $60 to $80 USD / hour
We are seeking an experienced Procurement Training & Contract Management Advisor to support the development of procurement training programs, contract knowledge resources, and process…
Added 33 mins ago
Client Relationship Specialist - Seal Beach, CA
Charles Schwab
Seal Beach, CA
with Schwab. Development is central to this role, and Schwab provides the resources,
Added 33 mins ago
HOSPITALITY ADMINISTRATIVE SPECIALIST NF3
U.S. Marine Corps
Twentynine Palms, CA
…Marine Lodge programs. Reports directly to the Regional Lodging Manager and provides administrative and operational support to General Managers and designated MCHS leadership. Functions as…
Added 33 mins ago
Registered Nurse - Patient Aligned Care Team - Ventura CBOC
Veterans Affairs, Veterans Health Administration
Ventura, CA
Added 33 mins ago
Manager, Ops KPI, Ramp - Austin, TX - (M3)
Applied Materials
Austin, TX · Austin
Ensures that all phases of project, program and/or process development are documented and that information required in other functional areas is reported, disseminated, or transferred, as…
Added 34 mins ago
T
Technical Product Manager
TEKsystems
Torrance, CA
- $68.02 USD / hour
Lead delivery from requirements through development, testing, deployment, and post-launch support.
Added 34 mins ago
Wealth Relationship Manager - Clovis
Citigroup
Fresno, CA
…Applies in-depth disciplinary knowledge, contributing to the development of new techniques and the improvement of processes and workflow for the area or function. Integrates subject matter…
Added 34 mins ago
UO
Project Specialist
University of Southern California
Los Angeles, CA
- $32.99 to $36.89 USD / hour
In order for your application to be considered, please attached a cover letter and CV to your employment application.

Amazon

Senior Applied Scientist, Leo Space Security

Bellevue, WA, United States

Apply About employer

Applications open in a new tab.

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

•

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

•

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

Apply About employer

More about this job

Skills

Research
Supply chain management
Machine learning
Oracle Java
C++
Python
Deep learning
Natural language processing
R
Scikit-learn
Apache Spark
Apache MXNet
TensorFlow
NumPy
SciPy
Control systems
ML
Recruitment
Mental health

Report this job