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Added 7 mins ago
FF
Part-Time Sales Lead - Famous Footwear
Famous Footwear
FENTON, MI
- Part-time
Career Development and Learning Opportunities. We provide education assistance of up to $7500 per year for full-time associates and provide opportunities for associates who want to grow…
Added 11 mins ago
Food Services Director
Cedar Crest at North Florida (2)
Gainesville, FL
Promotes the professional growth and development of the entire departmental team
Added 13 mins ago
Senior Applied Scientist, Leo Space Security
Amazon
Bellevue, WA
Design and run reinforcement learning and fine-tuning pipelines (GRPO, PPO, DPO) to optimize language models for security reasoning, triage, and detection-authoring tasks.
Added 32 mins ago
Medical Assistant, Colorectal Surgery, $3,000 Bonus, FT, 8:30A-5P
Baptist Health South Florida
FL
Career growth and development opportunities, with clear pathways and ongoing support
Added 33 mins ago
T
Procurement Training & Contract Management Advisor
TEKsystems
Rosemead, CA
- $60 to $80 USD / hour
Partner with Procurement, Legal, and Learning & Development teams to ensure training content is accurate, relevant, and effective.
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
Payroll Systems and Financial Operations Specialist
Defense Microelectronics Activity
McClellan, CA
…audit-readiness and internal-control activities, including development and validation of reconciliations, audit trails, supporting documentation, and corrective action plans. Develop…
Added 33 mins ago
DH
Manager Nursing Medical/Surgical
Dignity Health
Santa Maria, CA
- $60.9 to $92.69 USD / hour
…high standards of patient care. Assists in the training and development of new and existing staff members. Creates and maintains an environment that is conducive to learning transfer.…
Added 33 mins ago
Manager, Ops KPI, Ramp - Austin, TX - (M3)
Applied Materials
Austin, TX · Austin
…our team to push the boundaries of what is possible - while learning every day in a supportive leading global company. Visit our Careers website to learn…
Added 33 mins ago
HH
RN Clinical Support Coordinator Med Surg
HCA Healthcare
San Jose, CA
- $91.36 to $137 USD / hour
…through open, collaborative relationships with your direct manager or more formal opportunities through hospital councils and national nursing initiatives. You'll help shape decisions that…
Added 33 mins ago
O
Consulting Program Manager - Healthcare
Oracle
Sacramento, CA
- $97,800 to $209,500 USD / year
This role is part of a specialized consulting team focused on providing advanced solution development and in-depth product knowledge to advance Oracle Health’s strategic priorities. As a…
Added 34 mins ago
Senior Operations Manager
CACI International
Los Angeles, CA
…personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect…
Added 34 mins ago
UO
Project Specialist
University of Southern California
Los Angeles, CA
- $32.99 to $36.89 USD / hour
…seeking a full-time Project Specialist to support research in development and health economics. The Project Specialist will report directly to Dr. Wagner and work closely with collaborators…
Added 34 mins ago
F
Industrial Maintenance Technician
Flex-N-Gate
Urbana, IL
- $36 USD / hour
Extensive safety training, new hire orientation, continuous learning and development programs and tuition reimbursement
Added 36 mins ago
CC
Advocate Counselor / Case Manager - 2000663
Catholic Charities, Archdiocese of New York
NY · New York, NY
- $27.47 USD / hour
…to college and career exploration activities and work-based learning experiences aligned to the Career Navigation…
Added 36 mins ago
Field Service Engineer - Rapid City, SD
Cassling
Remote, United States
…select third-party equipment. Your first year will be spent learning the intricacies of the systems you’ll service from a senior engineer. You’ll also be coached in and become an expert in…
Added 36 mins ago
Field Service Engineer - Davenport/Bettendorf, IA
Cassling
Remote, United States
…select third-party equipment. Your first year will be spent learning the intricacies of the systems you’ll service from a senior engineer. You’ll also be coached in and become an expert in…
Added 36 mins ago
Field Service Engineer - Iowa City, IA
Cassling
Remote, United States
…select third-party equipment. Your first year will be spent learning the intricacies of the systems you’ll service from a senior engineer. You’ll also be coached in and become an expert in…
Added 36 mins ago
FF
Part-Time Sales Associate - Famous Footwear
Famous Footwear
QUEEN CREEK, AZ
- Part-time
Career Development and Learning Opportunities. We provide education assistance of up to $7500 per year for full-time associates and provide opportunities for associates who want to grow…
Added 45 mins ago
OS
Lead Software Engineer/Technical Program Manager
Odyssey Systems Cons
Colorado Springs, CO
- $31,533 USD / year
We are seeking a Lead Software Engineer / Technical Program Manager to own both the technical architecture and program execution of the Multimode Threat Engagement Simulation Platform - a…
Added 45 mins ago
OS
Sr. Program Manager
Odyssey Systems Cons
Colorado Springs, CO
- $31,533 USD / year
Odyssey is recruiting for a Senior Program Manager to join the team. The technical expert filling this position will be a trusted advisor and consultant to the government that supports…
Added 45 mins ago
UO
Part-Time Temporary Project Coordinator
University of Colorado Denver
Boulder, CO
- $34,986 USD / year
- Part-time
…Services in the Division of Continuing Education and supports the development and launch of a non-credit program designed to prepare individuals to sit for the International Coaching…
Added 45 mins ago
UO
Program Manager, Donor Communications and Relations, Arts and Sciences, Graduate
University of Colorado Denver
Boulder, CO
- $65,000 to $78,000 USD / year
Advancement at CU Boulder encourages applications for a Program Manager for Donor Communications and Relations! This role is responsible for contributing to the planning and execution of…
Added 46 mins ago
UO
Career Coach, First-and-Second Year Students
University of Colorado Denver
Boulder, CO
- $55,100 to $60,000 USD / year
…recruiting, job search strategies, and industry-specific skill development. This position leads and implements the administrative components of the Career Development events and programs…
Added 46 mins ago
UO
Associate Director of Marketing & Social Media
University of Colorado Denver
Boulder, CO
- $95,000 to $100,000 USD / year
…education, with an emphasis on inclusive excellence, active learning and global…

Amazon

Senior Applied Scientist, Leo Space Security

Bellevue, WA, 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

•

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

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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

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