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Added 15 mins ago
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Senior Project Manager | Commercial Construction
GPAC
Ann Arbor, MI
- $120,000 to $150,000 USD / year
Job Title: Senior Project Manager – Commercial & Multifamily Construction
Added 19 mins ago
Manager Field Service
Twenty-Six Defense
Tucson, AZ
Job Summary: The Field Service Manager will manage a team of professional Field Service Technicians, ensuring service delivery excellence, customer satisfaction, and alignment with…
Added 24 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
- Capability Development: Identify operational friction points in how the field team accesses tools, materials, and vendor support - and build the processes or systems to remove them. This…
Added 24 mins ago
Test Coordinator
CACI International
Fort Belvoir, VA
Research applicable documents such as Capability Development Documents, Capability Production Documents, product specifications, and Army Regulations, to develop and staff for approval Test…
Added 24 mins ago
Senior Applied Scientist, Leo Space Security
Amazon
Arlington, VA · Herndon, VA
…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…
Added 24 mins ago
Cloud Solutions Engineer
Office of the Director of National Intelligence
McLean, VA
…Audits & Inspections, Investigations & Intake, and Strategy & Support. Responsibilities This position is located in the Office of Strategy and Support, which leads integrated strategy and…
Added 41 mins ago
Federal Business Development Representative
GovSignals
Washington, DC
It can take the government longer to buy a capability than an adversary takes to field one, and we exist to close that gap.
Added 54 mins ago
Assistant General Manager /Manager in Training
CLUB 24 CONCEPT GYMS
Danbury, CT
Club 24 Concept Gyms is seeking a highly motivated fitness professional to join our team as a General Manager in Training. In this role, you will undergo comprehensive training and…
Added 54 mins ago
Director, Global Total Rewards, People Operations & HR Technology
Clinigen
Remote, United States
Support executive compensation, incentive design and Remuneration Committee activity.
Added 54 mins ago
Global Vice President, HR Business Partnering
Clinigen
Remote, United States
Coach senior leaders and support leadership team effectiveness.
Added 54 mins ago
Director, Organizational Effectiveness & Culture Transformation
Clinigen
Remote, United States
Assess change impact, stakeholder needs, readiness and risk, then translate the findings into sponsor, communication, manager and adoption plans.
Added 1 hour ago
Quality Assurance Manager
Valley Queen
Milbank, SD
The Quality Assurance Manager leads quality and food safety programs, ensuring compliance with FSMA, SQF, Grade A and customer standards, protecting product integrity through preventive…
Added 1 hour ago
CR
Business Analyst
Claritas Rx
Remote, United States
- $115,000 to $125,000 USD / year
…patients with chronic, life-threatening diseases receive the support that enables the greatest benefit from their therapy. Simply put, our promise is progress for every patient…
Added 1 hour ago
CR
Associate Business Analyst
Claritas Rx
Remote, United States
- $60,000 to $70,000 USD / year
…patients with chronic, life-threatening diseases receive the support that enables the greatest benefit from their therapy. Simply put, our promise is progress for every patient…
Added 1 hour ago
Human Resources Manager
KOCH INDUSTRIES INC
NEW RICHMOND, WI
Added 1 hour ago
Sales Support Specialist
SGS NORTH AMERICA INC #396
APPLETON, WI
Added 2 hours ago
Assistant Store Manager
NAPA Auto Parts
RIVERTON, UT
Riverton,UT,USA Full time R26_0000036653 Job Summary The Assistant Store Manager uses their automotive,customer service,operational and leadership expertise with all customers and team…
Added 2 hours ago
Engineering Manager
TTM TECHNOLOGIES, INC.
LOGAN, UT
…Experiments (DOE) to optimize process parameters. - Develop process capability studies and maintain statistical process control (SPC) systems. - Collaborate with design engineering teams on…
Added 2 hours ago
Training Manager
DANONE NORTH AMERICA PUBLIC BENEFIT CORPORATION
WEST JORDAN, UT
Training Manager Job Locations US-UT-West Jordan ID 2026-28416 Number of People to Hire 1 Job Family Manufacturing Level of Experience Experienced Professionals Short Intro and About the…
Added 2 hours ago
Store PRO
NAPA Auto Parts
WEST JORDAN, UT
…fulfillment efficiency - Product knowledge and technical advisory capability - Adherence to operational,pricing,and inventory processes - Contribution to team support and store operations…
Added 2 hours ago
Production Manager - Aftermarket - 2nd Shift
PARKER-HANNIFIN CORPORATION
OGDEN, UT
Added 2 hours ago
Engineering Manager
MOOG INC
SALT LAKE CITY, UT
…of life inside and outside of work. Job Title: Engineering Manager Reporting To: Management, General Management Work Schedule: Onsite - Salt Lake City, UT Moog, Inc. is a global leader in…
Added 2 hours ago
Facilities and Procurement Manager
Bright Event Rentals
TX
The Manager, Facilities & Vendor Management owns the company's physical footprint and its approved vendor network across all four regions (Northeast, Texas, Northern California, and…
Added 2 hours ago
Facilities and Procurement Manager
Bright Event Rentals
CA
The Manager, Facilities & Vendor Management owns the company's physical footprint and its approved vendor network across all four regions (Northeast, Texas, Northern California, and…
Added 2 hours ago
CH
Assistant General Manager
Chelsea Hospitality Group
Morristown, NJ
- $85,000 to $90,000 USD / year
Champion Growth and Development: Mentor and guide your team members, helping them see and reach their potential. You’ll create clear pathways for growth that allow everyone to thrive.

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

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

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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

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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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