Journeyman Software Developer - Modeling & Simulation

Position: Journeyman Software Developer - Modeling & Simulation

Location: Huntsville, Alabama (Redstone Arsenal)

Role Summary

Crossflow Technologies, Inc. is seeking a Journeyman Software Developer to support modeling and simulation (M&S), analysis, and verification and validation (V&V) activities. This role will focus on developing and maintaining software tools used to execute simulations, analyze simulation results, and support V&V of model-based systems. The developer will work primarily in Python and will support the operation and troubleshooting of simulation environments and models. The current technical emphasis is on signatures modeling and analysis, with opportunities to support trajectory-related analysis and broader M&S activities.

Key Responsibilities

• Develop, maintain, and enhance Python-based tools for simulation execution, data processing, statistical analysis, and V&V.


• Develop execution and automation tools used to configure, run, monitor, and evaluate model-based simulations.


• Execute simulations and analyze resulting data to support verification and validation activities and assess model behavior and performance.


• Support signatures modeling and analysis, including development of tools for processing, evaluating, and interpreting signature-related simulation data.


• Investigate unexpected or anomalous model behavior and work with model development teams to identify, isolate, and troubleshoot issues.


• Diagnose issues involving model inputs, configuration, software dependencies, and runtime environments, and develop practical solutions or workarounds where appropriate.


• Support model developers in integrating and exercising models within larger simulation environments.


• Apply statistical and quantitative analysis techniques to characterize simulation results and support V&V conclusions.


• Contribute to simulation execution approaches and software architecture that improve the repeatability, robustness, and efficiency of M&S workflows.


• Support trajectory-related modeling and analysis activities as program needs require.


• Document software tools, simulation configurations, analysis methods, assumptions, and results.

Required Qualifications

• Bachelor's degree in computer science, Software Engineering, Electrical Engineering, Aerospace Engineering, Mathematics, Physics, or a related technical field.


• 3–10 years of relevant software development, modeling and simulation, analysis, or related engineering experience.


• Strong proficiency in Python, including development of engineering, scientific, analysis, or automation software.


• Experience developing software tools for technical or scientific applications, including data processing and analysis.


• Experience applying statistical analysis techniques to engineering or simulation data.


• Understanding of modeling and simulation concepts, including the execution and analysis of model-based simulations.


• Experience debugging complex software, models, or simulation environments and systematically diagnosing unexpected behavior.


• Ability to work with technical teams across software development, model development, systems engineering, and V&V disciplines.


• Ability to independently investigate technical problems and communicate findings, limitations, and recommended solutions.


• ACTIVE Secret level clearance

Preferred Qualifications

• Experience with signatures modeling, simulation, or analysis, particularly in aerospace or defense applications.


• Experience developing tools or performing analysis in support of model verification and validation (V&V).


• Proficiency or working knowledge of C++.


• Familiarity with MATLAB for engineering analysis or modeling.


• Experience with trajectory modeling, simulation, or analysis.


• Experience developing simulation orchestration, execution, test, or analysis frameworks.


• Familiarity with techniques for configuring and managing simulation runtime environments, dependencies, inputs, and execution parameters.


• Experience troubleshooting or integrating individual models within a larger system-level simulation.


• Familiarity with reproducible analysis, automated testing, configuration management, and software development best practices.

Equal Opportunity/Affirmative Action Employer:

Crossflow ensures that employment decisions and personnel actions are administered fairly, equitably, and in compliance with the federal, state, and local laws and regulations governing EEO and personnel management. All qualified individuals will receive consideration for employment opportunities without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Why Crossflow?

Crossflow Technologies is proud to offer such wonderful benefits and perks to our employees; however, we feel the biggest perk is our company culture. We harbor a culture that extends down to the individual level by hiring people who understand and embrace our company values. Values like fervently protecting work-life balance and celebrating the achievements of others. To help guide and shape this environment, we strive to solicit feedback as frequently as possible through direct conversations and anonymous input. We take great pride in the fact that we have been contenders for the Best Places to Work award for the past few years - particularly when paired with having made the Inc. 5000 list for growth. To us, this demonstrates our ability to effectively scale our culture showing that Crossflow has been and continues to be, a place that people want to be.

Benefit-Eligible Employee Perks:

EXCEPTIONAL HEALTH, DENTAL, AND VISION COVERAGE Crossflow is pleased to offer employees with exceptional single and family options for health, dental, and vision coverage. Payments are taken from the first two paychecks of each month.

At a glance,

Health coverage choices (including an HSA) ranging from $0.00 to $403.14;

Dental coverage ranges from $8.23 to $31.65; and

Vision coverage ranges from $8.28 to $21.80

CROSSFLOW KUDOS SPOT BONUS PROGRAM

We created a unique performance bonus program called Crossflow Kudos. Throughout the year, employees are nominated by other employees, company leads, and even individuals outside of Crossflow to receive additional compensation and personal recognition for their positive work. There are six broad categories in which employees can earn Kudos awards.

401(k) RETIREMENT PLAN & COMPANY MATCHING

Crossflow uses Principal as our 401(k) plan sponsor. Employees can choose payroll deduction and fund investing options. Payroll deductions will begin the month following your enrollment. Crossflow matches 100% of the first 3% of compensation, plus 50% of the next 2% of compensation.

Employee Stock Ownership Plan (ESOP)

Crossflow Technologies offers benefit-eligible employees participation in an Employee Stock Ownership Plan (ESOP). Through the ESOP, eligible employees may receive an ownership interest in the company, creating an opportunity to share in Crossflow's long-term success while building retirement value alongside our other employee benefits.

HIGHER EDUCATION ASSISTANCE PROGRAM

Crossflow offers education assistance to benefit-eligible employees for degree programs at their director's discretion. Crossflow feels that a well-rounded education, even outside of an employee's current role, can enhance an employee's skillset and increase the company's value.

GENEROUS PTO ACCRUAL & FLEXIBLE LEAVE POLICY

Crossflow currently grants 11 federally observed paid holidays. In addition to these holidays, Crossflow offers a minimum of 2 weeks of paid time off (PTO) to all full-time employees. Employees may utilize PTO for any reason (sickness, vacation, personal day, etc.) and can carry over a maximum of 120 hours from year to year. Many employees are authorized to work additional hours within a normal, forty-hour pay period. This approval is included in the employee's offer letter for employment. These extra hours may be banked for compensatory (comp) time off.

PAID PARENTAL & BEREAVEMENT LEAVE

To help our employees be present with family during major life events, Crossflow provides additional PTO. We offer varying types of paid Parental Leave to aid birthing, non-birthing, and adoptive parents transition into parenthood. Crossflow also recognizes the importance of supporting employees who endure a death in their family by providing up to 5 days of paid Bereavement Leave a year.

PROFESSIONAL DEVELOPMENT FUNDING

We support employees who seek out personal or professional growth opportunities through countless of enabling programs to further equip themselves. Professional Development includes, but is not limited to, training courses, certificate programs, memberships to industry groups, and materials.

EMPLOYEE DRIVEN COMMUNITY ENGAGEMENT

We create as many opportunities as possible for employees to meet and build community. We offer monthly team bonding activities, allowing team members to assemble on a different level than at work. In addition to these gatherings, in 2021 we established Crossflow Cares, an employee-owned and operated charitable organization focused on awarding grants and providing volunteers to local non-profits. Furthermore, Crossflow Technologies is committed to serving the public by investing a large portion of our net income in the greater Huntsville/Madison County area.

MENTORSHIP PROGRAM & MORALE LUNCHES

The most successful people in the world always have a terrific team behind them, and Crossflow chooses to be the team behind the people, cheering our employees on to meaningful successes. Our Mentorship Program involves strategically pairing a protégé with a mentor who understands an employee's career aspirations and provides coaching towards that goal. A less structured version of this is our Morale Lunch program. We committed a portion of our budget to support our leads to meet with their team members over lunch and facilitate quality catch up sessions. The morale lunches have become a great tool for maintaining open communication and gaining insightful feedback.