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Added 1 hour ago
Systems Engineer / Principal Systems Engineer (AHT)
Northrop Grumman
Manhattan Beach, CA
Northrop Grumman Defense Systems sector (NGDS) is seeking a Systems Engineer or Principal Systems Engineer to join our growing team of diverse professionals. The candidate will support…
Added 1 hour 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 1 hour ago
Software Engineer- Simulation Models
Cisco
Milpitas, CA
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…
Added 1 hour ago
Systems Design Engineer - Bioengineering
ThermoFisher Scientific
Pleasanton, CA
The successful candidate will bring modern capabilities in computational modeling, automation, data science and AI. Working with experienced scientists and engineers, this person will…
Added 1 hour ago
Staff Systems Design Engineer - Consumables / Microfluidics
ThermoFisher Scientific
Pleasanton, CA
We are seeking a Staff Engineer in Consumables & Microfluidics to lead the design and commercialization of next-generation consumables for molecular biology, genetic-analysis and…
Added 1 hour ago
Astrodynamics Engineer (Entry-Level) - Millennium Space Systems
The Boeing Company
El Segundo, CA
The Astrodynamics Team is responsible for conducting a range of modeling, simulation, and analyses in areas such as space mission design, trajectory design, orbital maneuvers, orbit…
Added 1 hour 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 3 hours ago
Engineer Transmission Planning
Avangrid Service Co
ROCHESTER, NY
Job Title: Engineer - Transmission Planning Reports to: Manager, Transmission Planning NY In Office: Rochester, NY (3CC) The base salary range for this position is dependent upon experience…
Added 4 hours ago
Jr. Software Test Engineer
deciBel Research, Inc.
Colorado Springs, CO
Added 4 hours ago
2027 Space Systems and Orbit Determination Operations Engineer
The Aerospace Corpor
Colorado Springs, CO
The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally…
Added 4 hours ago
Jr. System Engineer
deciBel Research, Inc.
Colorado Springs, CO
Added 4 hours ago
2027 Space Systems and Orbit Determination Operations Engineer
The Aerospace Corpor
Colorado Springs, CO
The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally…
Added 4 hours ago
2027 Earth-Orbit Flight Dynamics Engineer
The Aerospace Corpor
Colorado Springs, CO
The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally…
Added 4 hours ago
IRHB Jr System Engineer
deciBel Research, Inc.
Colorado Springs, CO
Added 4 hours ago
2027 Earth-Orbit Flight Dynamics Engineer
The Aerospace Corpor
Colorado Springs, CO
The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally…
Added 6 hours ago
HV Battery NVH/Durability CAE Engineer
Ford Motor Company
Dearborn, MI
5 years or more experience in CAE structural modeling and simulation analysis techniques in durability and NVH attributes
Added 8 hours ago
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AI Silicon Performance Modeling and Analysis Engineer
Intel Corporation
CA
- $141,910 to $232,190 USD / year
We are seeking a highly experienced and motivated engineer to drive AI silicon performance modeling, validation, architectural analysis, and stakeholder engagement activities. The candidate…
Added 11 hours ago
NS
Principal Digital Design Engineer
NAVITAS SEMICONDUCTOR USA, INC.
Torrance, CA
- $170,000 to $190,000 USD / year
Mixed-signal modeling and co-simulation concepts.
Added 15 hours ago
TT
Principal Software Engineer, Perception
True Talent Solutions Partners
Alameda, CA
- $300,000 to $380,000 USD / year
- Strong expertise in robotics or autonomous-systems perception, including state estimation, tracking, mapping, probabilistic estimation, and uncertainty modeling.
Added 17 hours ago
Radiation Systems Engineer - Level 3 or 4 (AHT)
Northrop Grumman
Redondo Beach
The selected Radiation Effects & Survivability Engineer will be responsible for hardening electronic systems against Natural Space Radiation Effects and both Endo- and Exo-Atmospheric…
Added 17 hours ago
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Forward Deployed Software Engineer
Raydar
San Jose, CA
- $150,000 to $300,000 USD / year
- Build software links between the product and the client's development, test and simulation setups.
Added 21 hours ago
Antenna RF Electrical Design Engineer I (Onsite)
RTX Corporation
mckinney, TX
Exciting opportunity in Raytheon as an Electrical Engineer I with potential to have significant impact, recognition, and growth in the organization. The engineer will have responsibility…
Added 21 hours ago
Power & Analog Design Electrical Engineer II (Onsite)
RTX Corporation
mckinney, TX
Raytheon is looking for a Power & Analog Design Electrical Engineer I . The Multi-Product Power & Digital Department is responsible for FPGA and hardware designs for electronic warfare,…
Added 21 hours ago
Digital Hardware Design Electrical Engineer II (Onsite)
RTX Corporation
mckinney, TX
Analyzing, modeling, and simulating electronic designs
Added 21 hours ago
Digital Hardware Design Electrical Engineer I (Onsite)
RTX Corporation
mckinney, TX
Analyzing, modeling, and simulating electronic designs

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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