Jobs in the United States

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Added 6 hours ago
Principal Systems Engineer (Top Secret Clearance)
Northrop Grumman
Manhattan Beach, CA
Northrop Grumman Defense Systems sector (NGDS) is seeking a Principal Systems Engineer to join our growing team of diverse professionals. The candidate will support Agile development of MS…
Added 6 hours ago
Software Engineer- Simulation Models
Cisco
Milpitas, CA
Two years of experience as a Software Engineer developing simulation models
Added 6 hours ago
Systems Design Engineer - Bioengineering
ThermoFisher Scientific
Pleasanton, CA
Use Python, MATLAB, R, JMP or comparable tools for modeling, data analysis and visualization.
Added 6 hours ago
Sr. Applications Engineer - FIB/PFIB
ThermoFisher Scientific
Fremont, CA
Join our team at Thermo Fisher Scientific as a Senior Field Applications Engineer, where you'll provide technical expertise to semiconductor and life sciences companies. Working at the…
Added 6 hours ago
Astrodynamics Engineer (Entry-Level) - Millennium Space Systems
The Boeing Company
El Segundo, CA
As an Astrodynamics Engineer, you will support execution of technical design, analysis, and operation for a given program, study, or proposal. You will run orbital analysis tools under the…
Added 6 hours ago
AE
Campus Undergraduate Full-Time Engineer - 2027 AI Engineer I, Enterprise Technology Services- Palo Alto, CA
American Express
Palo Alto, CA
- $78,000 to $124,750 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As an AI Engineer I in Enterprise Technology Services, you’ll join a full-time graduate…
Added 6 hours ago
AE
Campus Graduate Masters Full-Time Engineer - 2027 AI Engineer I, Enterprise Technology Services- Palo Alto, CA
American Express
Palo Alto, CA
- $78,000 to $124,750 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As an AI Engineer I in Enterprise Technology Services, you’ll join a full-time graduate…
Added 6 hours ago
Hardware Engineer I (Intern) - United States
Cisco
San Jose, CA · Carlsbad, CA
Added 6 hours ago
CPU Performance Analysis Engineer
Qualcomm Incorporated
San Diego, CA
Added 6 hours ago
Manufacturing Engineering Co-op (Summer/Fall 2027)
Collins Aerospace
Santa Fe Springs, CA
We are seeking a Manufacturing Engineer Co-op to join our team! The Manufacturing Engineer Co-op will support the Maintenance, Repair, and Overhaul (MRO) business by driving process and…
Added 7 hours ago
Software Engineer (Hybrid)
Cisco Systems, Inc.
San Jose, CA · RTP, NC
…environments, including proficiency in Java/J2EE, Spring, TypeScript, Python, Snowflake, and Oracle…
Added 7 hours ago
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Lead Principal Platform Software Engineer
Oracle
United States
- $113,600 to $306,400 USD / year
Proficiency in Python and Java with experience developing and maintaining production software in both languages.
Added 7 hours ago
Business Intelligence Engineer - SCOT, Fulfillment Optimization, SCOT-FO LRN
Amazon
Bellevue, WA
The FO Planning & Forecasting team is seeking a Business Intelligence Engineer (BIE) who combines deep analytical skills with a builder's mindset - someone who can architect data pipelines,…
Added 7 hours ago
Post Silicon Engineer, Amazon LEO
Amazon
Redmond, WA
…operate in the harsh environment of space. The Post Silicon Engineer will play a pivotal role in a team that brings up, validates and characterizes MODEM SOC. In this role you will own Post…
Added 7 hours ago
Aerospace HW Dev Engineer, Antenna Payload Validiation
Amazon
Redmond, WA
As a Hardware Development Engineer, you will help design, build, and validate hardware for the phased array antennas in our satellite constellation. You'll design circuits and test boards,…
Added 7 hours ago
Software Development Manager, Management Plane
Amazon
Seattle, WA
…gateways, SDK development across multiple languages (Rust, Python, Java, C/C++), and observability…
Added 7 hours ago
Aircraft Performance Engineer
Executive Recruiting Group
San Luis Obispo, CA
We are seeking a Performance Flight Sciences Engineer, who will work across vehicle conceptual design, aircraft performance and flight testing - from predicting aircraft capability and…
Added 8 hours ago
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Software Systems Engineer - GitHub Enterprise
HP
Vancouver, WA
- $105,050 to $161,800 USD / year
Added 9 hours ago
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Business Development Engineer (BDE), USSOCOM
Motorola Solutions, Inc.
Denver, CO
- $40,123 USD / year
Practical experience with TCP/IP networking, Linux environments, or scripting languages (e.g., Python, C++) for test automation.
Added 9 hours ago
Associate Controls Engineer
Tesla, Inc.
BUFFALO, NY
What to ExpectThe Associate Controls Engineer for the Remanufacturing team will be commissioning, troubleshooting and programming automated equipment systems, robot applications, conveyor…
Added 9 hours ago
Senior Data Scientist (Report Developer)
Seneca Holdings
BUFFALO, NY
…combines hands-on report development with the ability to debug, re-engineer, and optimize existing code as part of the transition.Key Responsibilities * Analyze existing BusinessObjects…
Added 9 hours ago
Senior AI Engineer
Octus
NEW YORK, NY
Added 9 hours ago
Software Engineer
Octus
NEW YORK, NY
Added 9 hours ago
Software Engineer Application Framework
Octus
NEW YORK, NY
Added 9 hours ago
Staff Software Engineer, Data & Scalability Platform
Cisco
New York, NY
As a Staff Software Engineer on the Data & Scalability Platform team, you will provide technical leadership for the architecture, scalability, and cost of the entire data plane: the stores…

Cisco

Software Engineer- Simulation Models

Milpitas, CA, United States

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Job details

Posting language: English
Posted: Aug 31, 2026

Original job description

The application window is expected to close on: 11/07/2026

Meet the Team

We develop advanced simulation platforms and digital twins that mirror complex IOS-XR routing environments for scalable, high-fidelity network validation. Our team bridges the gap between software engineering and field deployment by automating CI/CD testing pipelines and providing robust virtualization tools for developers and customers. We are dedicated to pioneering the future of network reliability through high-speed simulation, ensuring seamless performance across the most demanding service provider infrastructures.

Your Impact

You will define, design, develop, test, debug, release, enhance, and maintain software that accelerates the development of Cisco IOS XR and SONiC. You will lead the implementation and optimization of simulation software and tools, develop digital twins for routing and artificial intelligence (AI) fabric products, and build large-scale distributed systems.

In this role, you will apply advanced theoretical and practical knowledge to create functional, system-level models for next-generation routing platforms. You will also have opportunities to contribute to open-source technologies and communities.

Your responsibilities will include:

Developing virtual board models for next-generation routing platforms.
Modeling field-programmable gate array (FPGA) application-specific integrated circuits (ASICs), devices, sensors, and related hardware components.
Integrating hardware component models and packet-processing models into virtual board environments.
Designing, implementing, and optimizing simulation software and development tools.
Developing digital twins of router and AI fabric products.
Building and maintaining reliable, large-scale distributed systems.
Developing automated tests and executing comprehensive regression testing to validate end-to-end system functionality.
Debugging simulation models, device drivers, and network operating system software.
Providing timely and effective technical support to engineering teams.
Contributing to relevant open-source projects and technologies.

Minimum Qualifications

Bachelors + 5 years of related experience, or Masters + 3 years of related experience, or PhD + 0 years of related experience in Computer Science, Computer Engineering, Electrical Engineering, or a related field
Two years of experience as a Software Engineer developing simulation models
Experience with system-on-chip (SoC) design and architecture.
Experience developing software using C++ in Linux environments.
Experience with continuous integration and continuous delivery (CI/CD) processes.
Experience using Python for test automation.
Experience debugging models, drivers, and operating systems.

Preferred Qualifications

Experience developing functional or system-level simulation models.
Experience modeling FPGAs, ASICs, sensors, or other hardware devices.
Experience integrating packet-processing models into virtual platforms.
Experience building large-scale distributed systems.
Experience with Cisco IOS XR, SONiC, or comparable network operating systems.
Strong analytical, debugging, and cross-functional collaboration skills.
Experience developing networking software.
Experience with chip modeling and performance analysis.

Why Cisco?

At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.

Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere.

We are Cisco, and our power starts with you.

Message to applicants applying to work in the U.S. and/or Canada:

The starting salary range posted for this position is $155,000.00 to $222,600.00 and reflects the projected salary range for new hires in this position in U.S. and/or Canada locations, not including incentive compensation*, equity, or benefits.

Individual pay is determined by the candidate's hiring location, market conditions, job-related skillset, experience, qualifications, education, certifications, and/or training. The full salary range for certain locations is listed below. For locations not listed below, the recruiter can share more details about compensation for the role in your location during the hiring process.

U.S. employees are offered benefits, subject to Cisco’s plan eligibility rules, which include medical, dental and vision insurance, a 401(k) plan with a Cisco matching contribution, paid parental leave, short and long-term disability coverage, and basic life insurance. Please see the Cisco careers site to discover more benefits and perks. Employees may be eligible to receive grants of Cisco restricted stock units, which vest following continued employment with Cisco for defined periods of time.

U.S. employees are eligible for paid time away as described below, subject to Cisco’s policies:

10 paid holidays per full calendar year, plus 1 floating holiday for non-exempt employees
1 paid day off for employee’s birthday, paid year-end holiday shutdown, and 4 paid days off for personal wellness determined by Cisco
Non-exempt employees** receive 16 days of paid vacation time per full calendar year, accrued at rate of 4.92 hours per pay period for full-time employees
Exempt employees participate in Cisco’s flexible vacation time off program, which has no defined limit on how much vacation time eligible employees may use (subject to availability and some business limitations)
80 hours of sick time off provided on hire date and each January 1st thereafter, and up to 80 hours of unused sick time carried forward from one calendar year to the next
Additional paid time away may be requested to deal with critical or emergency issues for family members
Optional 10 paid days per full calendar year to volunteer

For non-sales roles, employees are also eligible to earn annual bonuses subject to Cisco’s policies.

Employees on sales plans earn performance-based incentive pay on top of their base salary, which is split between quota and non-quota components, subject to the applicable Cisco plan. For quota-based incentive pay, Cisco typically pays as follows:

.75% of incentive target for each 1% of revenue attainment up to 50% of quota;
1.5% of incentive target for each 1% of attainment between 50% and 75%;
1% of incentive target for each 1% of attainment between 75% and 100%; and
Once performance exceeds 100% attainment, incentive rates are at or above 1% for each 1% of attainment with no cap on incentive compensation.

For non-quota-based sales performance elements such as strategic sales objectives, Cisco may pay 0% up to 125% of target. Cisco sales plans do not have a minimum threshold of performance for sales incentive compensation to be paid.

The applicable full salary ranges for this position, by specific state, are listed below:

New York City Metro Area:

$155,000.00 - $256,000.00

Non-Metro New York state & Washington state:

$138,100.00 - $227,900.00

For quota-based sales roles on Cisco’s sales plan, the ranges provided in this posting include base pay and sales target incentive compensation combined.

** Employees in Illinois, whether exempt or non-exempt, will participate in a unique time off program to meet local requirements.

Cisco is an Affirmative Action and Equal Opportunity Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, national origin, genetic information, age, disability, veteran status, or any other legally protected basis.

Cisco will consider for employment, on a case by case basis, qualified applicants with arrest and conviction records.

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