Modeling & Simulation

Modeling & Simulation Developer Jobs

14 jobs found

1d ago

Machine Learning Engineer - LLMs, Agent Systems, and Simulation Tooling, Siri Core Modeling

Apple Cupertino, CA

Cupertino, CA

1d ago

$150k - $278k/yr Full time Agentic Ai Ai Agent Ai Agent Platform

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Job Description

Join Apple’s Siri organization in Cupertino, CA (onsite) to help define how next-generation intelligent agents reason, plan, and interact through natural voice and multimodal experiences. In this senior Machine Learning Engineering role, you will build scalable LLM reasoning systems and the simulation and evaluation tooling that supports agentic voice capabilities across client and backend environments.

What you’ll do

Design and implement scalable simulation and evaluation frameworks for LLM-based agents.
Develop infrastructure for training and experimentation with agentic behaviors, including how agents plan, adapt, and evaluate actions in realistic environments.
Build scalable evaluation pipelines and create reliable tooling to accelerate iteration for prototyping and deployment.
Integrate agent reasoning capabilities across client-side and backend environments.
Collaborate with ML researchers and applied researchers to translate novel reasoning approaches into production-grade systems.
Run experiments in simulated environments to advance robust, trustworthy agent behavior.

What you bring

Experience deploying LLM models in research or production contexts.
Knowledge of adaptive feedback loops, reinforcement learning, or interactive agent design.
Familiarity with client-backend integration for AI-driven applications.
Strong Python skills (preferred) and proficiency in at least one other programming language.
Proven ML engineering background, including system design, training pipelines, and deployment workflows.
Deep understanding of agent-based simulation, agentic RAG systems, and LLM evaluation methodologies.
Ability to balance long-term platform vision with pragmatic short-term delivery in fast-paced environments.
Minimum education/experience: Bachelor’s degree in Computer Science, Machine Learning, or a related quantitative field, plus 3+ years of relevant industry experience.
Advanced degree preferred: MS or PhD in Computer Science, Machine Learning, or a related field.

Technologies you’ll work with

Python
Reinforcement learning
Agentic RAG systems
LLM evaluation methodologies

Pay & benefits

Base pay range: USD 150,400 - 277,600 per year, determined based on skills, qualifications, experience, and location.

Comprehensive medical and dental coverage
Retirement benefits
A range of discounted products and free services
Reimbursement for certain educational expenses, including tuition
Opportunity to become an Apple shareholder through participation in Apple’s discretionary employee stock programs
Eligible for discretionary restricted stock unit awards
Can purchase Apple stock at a discount if voluntarily participating in the Employee Stock Purchase Plan
Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation

Note: Apple benefit, compensation, and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

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3d ago

Scientific Software Developer

Peraton Stennis Space Center, MS

Stennis Space Center, MS

3d ago

$80k - $128k/yr Full time Backend Developer Python Data Analysis

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Job Description

Peraton is seeking a Scientific Software Developer to support the NRL ocean modeling team at Stennis Space Center, MS in an onsite role. The position centers on developing, testing, and debugging scientific software while working to improve Navy ocean models and data assimilation capabilities using HPC workflows and METOC pipelines.

You will contribute to NRL Code 7320 objectives through hands-on software development, model coupling improvements, assimilation enhancements, and documentation that supports technical reporting and publications.

Key responsibilities

Use METOC simulation pipelines, data assimilation systems, and high-performance computing to develop and optimize Navy ocean models, including HYCOM and the NCODA system
Develop, test, and debug scientific software with languages such as Fortran, Python, and C++, integrating with Navy systems including NCOM and NCODA-var to improve model performance and support the transition from research to operational systems
Improve model coupling, enhance data assimilation techniques, maintain comprehensive software documentation, and contribute to technical reports and publications as needed for NRL Code 7320

Minimum qualifications

5 years experience with BS/BA, or 3 years with MS/MA
Secret security clearance
Demonstrated experience with METOC simulation pipelines and real-time data assimilation systems
Demonstrated experience with modern programming languages including Fortran, Python, Java, C, C++, Assembly, and Matlab
Demonstrated experience with Linux and scripting, including Bash/KSH, Perl, and NCAR Command-Language
Demonstrated experience with scientific software development and deployment practices, including compilers and workload managers/schedulers such as MPI, PBS/Slurm, GCC/Gfortran, IFX/ICC/Ifort, make, and HPC-related tools
Demonstrated experience with data formats and debugging/profiling tools such as NetCDF, BUFR, GRIB1/2, GDB, and Valgrind, along with Linux/Unix
Demonstrated experience with documentation approaches including Javadocs, pydocs, Pod, manpages, and custom help menu frameworks for KSH, Perl, Python, and Fortran
Specific experience with Navy ocean modeling and data assimilation systems: NCOM, NCODA-QC, NCODA-prep, and NCODA-var
Demonstrated experience running Navy scientific modeling and data assimilation systems on HPC platforms
Demonstrated ability to debug Navy scientific modeling and data assimilation computer codes

Technologies

METOC simulation pipelines, data assimilation systems, and high-performance computing
HYCOM and the Navy Coupled Ocean Data assimilation (NCODA) system
Fortran, Python, C++
NCOM, NCODA-var, NCODA-QC, NCODA-prep
Bash/KSH, Perl, NCAR Command-Language, Linux environment and scripting
MPI, PBS/Slurm, Netbeans, Eclipse, Vi, Ansible
Git/SVN, GCC/Gfortran, IFX/ICC/Ifort, make
NetCDF, BUFR, GRIB1/2, GDB, Valgrind, Linux/Unix
Javadocs, pydocs, Pod, manpages, Matlab, Java, C, Assembly

Compensation

USD 80,000 - 128,000 per year (target salary range).

Benefits

Medical
Dental
Vision
Life
Health savings account
Short/long term disability
EAP
Parental leave
401(k)
Paid time off (PTO) for vacation
Company paid holidays

Application details

The application period is estimated to be 30 days from the job posting date.
By applying, you express interest in the role and the company.
During the review, you may be required to participate in an on-camera interview and a process to verify your identity.
Use of AI tools of any kind during Peraton interviews is strictly prohibited unless you obtained prior written authorization.
All interview responses must be your own.

EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.

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3d ago

Software Engineer (NASA SET)

TMC TECHNOLOGIES Fairmont, WV

Fairmont, WV

3d ago

Full time Embedded System Embedded Systems Software Engineer

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Job Description

Join a mission-focused team at TMC Technologies working on the NASA Independent Verification and Validation (IV&V) JSTAR effort. The NASA IV&V JSTAR team designs, develops, and deploys spacecraft simulators that support advanced Verification and Validation (V&V) activities.

What you’ll work on

In this role, you will design, develop, and deploy NASA spacecraft simulators used in advanced V&V workflows. Your work will contribute directly to simulation capabilities that help teams validate complex spacecraft systems.

Required qualifications

Bachelor’s degree in Computer Science, Computer Engineering, or a related field
1+ years of pertinent engineering, software, or embedded software systems experience
Strong software skills
Experience in design and implementation of complex systems, including Linux development, and programming with C, C++, and Python
U.S. Citizenship with eligibility for a security clearance

Technologies involved

Linux
C
C++
Python
QEMU
Microcontrollers
FPGAs

Desired qualifications

Experience or familiarity with QEMU
Embedded experience and familiarity with spacecraft hardware
Experience with Linux development and provisioners
Experience with microcontrollers and FPGAs

Location: Fairmont, WV (onsite)

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7d ago

Simulation Generative Data Engineer

Apple Cupertino, CA

Cupertino, CA

7d ago

$185k - $325k/yr Full time Artificial Intelligence Data Engineer Data Pipeline

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Job Description

Work onsite in Cupertino with a team building next-generation simulation technology for AI/ML. As a Simulation Generative Data Engineer at Apple, you will create synthetic data and tools that turn inputs like text, images, video, and sensor data into 3D assets, scenes, and scenarios. You will collaborate across engineering, research, and creative disciplines while developing prototypes, proofs-of-concept, and production pipelines.

What you’ll do

Build, enhance, and operate tools and pipelines that generate 3D assets, scenes, and scenarios from inputs such as text, images, video, or other sensor data using contemporary generative models alongside procedural techniques.
Create assets and scenes that support offline rendering and/or real-time rendering for a range of downstream uses.
Design and implement prototypes, proofs-of-concept, and production systems to increase the ability to create and vary simulation scenarios.
Develop tools, APIs, and reusable components so other teams can generate, manage, and automate these workflows, including integrating with existing Apple tools and pipelines.
Stay current with advances in simulation, rendering, generative models, VLMs, and synthetic data from academia, industry, and within Apple, then introduce new approaches where they add value.

Core requirements

Master’s degree in Computer Science or a related field, or equivalent practical experience.
Strong programming skills in Python, with solid software engineering fundamentals.
Experience creating 3D data with generative models, especially when coordinated with traditional approaches.
Experience with 3D graphics or game engines, including topics such as rendering, animation, scene graphs, or content pipelines.
Ability to work collaboratively with cross-functional partners including engineers, artists, and researchers.
Strong communication skills.
Familiarity with USD and its APIs.

Helpful experience

Programming experience in C++.
Experience with real-time simulation and game engines such as Unreal, Unity, Godot, Omniverse, or custom engines.
Experience with real-time and offline rendering, including ray tracing, lighting, or shading.
Familiarity with MaterialX.
Familiarity with machine learning workflows, especially perception tasks, generative models, or VLMs.
Knowledge of physics simulation, sensor simulation, or physically-based modeling.
Experience with industrial/commercial simulation tools or large-scale data pipelines.

Salary

USD 184,700 - 324,800 per year.

Technologies you may use

C++, Python
Unreal, Unity, Godot
Omniverse, USD
VLMs, MaterialX

Benefits

Comprehensive medical and dental coverage
Retirement benefits
Discounted products and free services
Reimbursement for certain educational expenses, including tuition
Apple discretionary employee stock programs (opportunity to become an Apple shareholder)
Discretionary restricted stock unit awards
Ability to purchase Apple stock at a discount through the Employee Stock Purchase Plan (optional participation)
Discretionary bonuses or commission payments, plus relocation

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12d ago

Modeling and Simulation Software Developer

nLogic Huntsville, AL

Huntsville, AL

12d ago

Full time Engineer Engineering Linux

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Job Description

nLogic is seeking a Modeling and Simulation Software Developer to help advance mission-focused work for advanced missile defense systems in Huntsville, AL. In this onsite role, you will design and evolve modeling and simulation (M&S) software that supports system understanding, verification, and validation. The position offers a structured 9/80 work schedule, minimal travel, and a benefits package that includes medical, dental, and vision insurance, paid time off, a 401(k), and an Employee Stock Ownership Plan (ESOP), along with professional development support.

What you will do

Develop, modify, and maintain software supporting Modeling and Simulation products for advanced missile defense systems.
Build scripts and software to implement, run, and evaluate simulation capabilities.
Apply mathematical, physics, and aerospace concepts to develop simulation models and algorithms.
Prototype high-level system requirements and Concepts of Operations (CONOPs) within M&S environments.
Derive and apply aerospace and mathematical equations to support system and simulation requirements.
Analyze simulation results and flight performance to assess system behavior and identify potential issues.
Perform root cause analysis and support specification and model tuning as required.
Develop and execute scripts to test software and analyze results.
Support integration, verification, and validation of M&S software and simulation capabilities.
Maintain technical documentation associated with M&S products.
Collaborate with software developers, systems engineers, analysts, and other technical personnel to improve M&S capabilities.

What you need

Active Secret Security Clearance.
Bachelor’s degree in Engineering, Computer Science, Mathematics, Physics, or a related technical field.
Relevant experience in software development, aerospace, systems engineering, or Modeling and Simulation.
Demonstrated software development and coding skills.
Strong understanding of mathematical and/or physics concepts and the ability to apply them to M&S.
Experience with Modeling and Simulation on a missile defense or equivalent Department of Defense (DoD) system is highly desired.
Familiarity with Missile Defense Agency (MDA) organizations and programs is preferred.
Experience working in a Linux environment is preferred.
Experience developing or working with simulation software, aerospace systems, or flight dynamics is preferred.
Self-initiative, analytical ability, and problem-solving skills.
Ability to clearly express technical ideas, work effectively in a team, and manage in a multi-tasking environment.
U.S. Citizenship required.

Position details

Work model: Onsite in Huntsville, AL
Travel: Minimal
Schedule: 9/80 work schedule

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16d ago

Modeling and Simulation Developer

MANTECH Quantico, VA

Quantico, VA

16d ago

Full time Backend Developer Data Analysis Data Analytics

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Job Description

MANTECH is hiring a Software Developer (Modeling and Simulation) in Quantico, VA (onsite) to help the Marine Corps Warfighting Lab transition to digital wargaming.

Responsibilities

Design, develop, and maintain simulation models and environments using a range of programming languages, tools, and data sources
Integrate models and simulations into broader system architectures
Support MCWL Wargaming Division efforts for interoperability testing and model orchestration
Work with engineers, analysts, and operational subject matter experts to improve model fidelity and simulation accuracy
Implement new capabilities, run model testing and validation, and troubleshoot issues across evolving simulation platforms
Plan and coordinate simulation project work, including data collection, stakeholder alignment, and capability tracking
Contribute to simulation project documentation activities

Requirements

Bachelor’s degree in Computer Science, Software Engineering, Game Development, or a related technical field
Minimum 7 years of software development experience focused on simulation or game-based environments
Alternative experience qualifications: 9 years with an associate’s degree, or 10 years without a degree
Proficiency in programming languages including C++, C#, Python, or Java
Experience with simulation platforms or engines such as AFSIM, NGTS, OneSAF, Unity, Unreal Engine, Simio, or Arena
Familiarity with version control and collaborative software development workflows
Must hold a current/active TS/SCI security clearance

Technologies

Languages: C++, C#, Python, Java
Simulation/engines: AFSIM, NGTS, OneSAF, Unity, Unreal Engine, Simio, Arena
Practices/tools: version control systems
Methods: Agile, Scrum
Data: SQL

Preferred Qualifications

Understanding of modeling and simulation principles in military or operational contexts
Familiarity with mission engineering, wargaming, campaign analysis, or Naval Capabilities Integration Process (NCIP), and related military systems/processes
Knowledge of 3D graphics, physics engines, and database management systems (including SQL)
Experience applying Agile or Scrum methodologies to simulation projects
Strong communication, analytical, and cross-functional collaboration skills

Physical Requirements

Ability and willingness to perform occasional manual labor and warehouse duties, including lifting up to 50 pounds
Ability to remain in a stationary position 50% of the time
Ability to occasionally move about inside the office to access file cabinets and office machinery
Ability to frequently communicate with coworkers, management, and customers, which may include delivering presentations, and exchange accurate information in those settings

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16d ago

Senior Software Engineer (Simulation Platform)

Caterpillar Irving, TX

Irving, TX

16d ago

$113k - $183k/yr Full time Python Senior 3d Design Tools

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Job Description

Build next-generation digital twin and interactive 3D experiences at Caterpillar in Irving, TX (onsite). In this Senior Software Engineer role, you will design and deliver simulation and visualization capabilities that support Caterpillar’s digital twin initiatives, working primarily with NVIDIA Omniverse and modern C++/Python toolchains across modeling, validation, and integration.

What you’ll work on

Develop simulation logic and behavioral models that represent machine and system behavior.
Build high-fidelity 3D models, scenes, and environments using NVIDIA Omniverse, USD, and Omniverse Kit-based pipelines.
Create and run model validation and verification plans to ensure digital twins are accurate and numerically stable.
Integrate simulation components with Caterpillar models, data systems, and digital twin frameworks.
Design and contribute to the toolchain and pipeline including scripting utilities, automated test frameworks, and modular code libraries.
Work hands-on across multiple digital-twin platforms, including NVIDIA Omniverse (primary), CARLA, Siemens NX/Teamcenter/Plant Simulation, Dassault 3DEXPERIENCE, Ansys Twin Builder, or similar, plus Unity or Unreal Engine.
Integrate data, models, or external simulation engines into unified digital-twin experiences.
Help evaluate emerging tools and frameworks to expand Caterpillar’s simulation and digital-twin capabilities.
Produce software products or systems aligned to product requirements, including knowledge of development tools and activities.
Conduct walkthroughs and monitor the effectiveness and quality of development activities.
Contribute to development of multiple or large digital twins, including elaboration on multiple-development toolkits for traditional simulation and digital twins.
Contrast strengths and tradeoffs between different development languages and tools, and estimate and monitor development costs based on functional and technical requirements.
Provide consulting on selecting and using developers’ workbench tools.

Technologies

NVIDIA Omniverse, USD, Omniverse Kit
C++, Python
CARLA
Siemens NX, Teamcenter, Plant Simulation
Dassault 3DEXPERIENCE, Ansys Twin Builder
Unity, Unreal Engine

What you bring

Knowledge of effective presentation tools and techniques, including summarization and simplification to communicate complex technical concepts clearly.
Understanding of effective communication concepts, tools, and techniques to transmit, receive, and accurately interpret ideas and needs.
Effective self-management practices, with the ability to manage multiple concurrent objectives and prioritize time effectively.
Big-picture thinking and planning to maintain focus on key success factors.
Effective influencing tactics and strategies to deepen expertise and impact or challenge decisions within and outside the organization.
Ability to produce software products or systems in line with product requirements, using development tools and activities.
Experience developing simulation logic and behavioral models governing machine and system behavior.
Ability to develop and execute model validation and verification plans for accurate, numerically stable digital twins.
Experience integrating simulation components with current Caterpillar models, data systems, and digital twin frameworks.
Experience contributing to toolchain and pipeline design, including scripting utilities, automated test frameworks, and modular code libraries.
Hands-on capability across multiple digital-twin platforms (including NVIDIA Omniverse and the listed alternatives).
Knowledge of software integration processes and functions, including designing, developing, and maintaining interfaces to alternative platforms and software packages.
Understanding of the software development life cycle and structured methodology for delivering and managing new or enhanced software products.

Compensation and schedule

Salary: USD 112,710 - 183,140 per year
Location: Irving, TX (onsite)
Schedule: onsite five days a week; full-time at the Dallas/Irving, TX location