Job Title: Senior Software Architect
Location: St. Louis, MO
Company: Onyx 360
Job Type: Full-Time
Travel: As required up to 20%
About the Role
At Onyx 360, we are reimagining how industry designs, tests, and runs systems that power the world – through simulation that connects imagination with reality. Our work bridges the digital and physical, turning engineering theory into real-world performance.
We are seeking a Senior Software Architect to lead the development of innovative solutions that enhance the delivery, impact, and maintainability of Onyx 360’s simulation services. This is a hands-on leadership role responsible for defining the technical roadmap, building and managing a development team, and creating tools and methodologies that reduce engineering effort, augment simulation value, and improve the efficiency of maintaining deployed systems.
In collaboration with project teams and the Simulation Consultant, you will shape the technology strategy, drive innovation, and ensure that Onyx 360 stays at the forefront of industrial simulation services — all while complementing existing software offerings in the market.
Key Responsibilities
- Define and execute the technology roadmap to improve simulation delivery, optimize system value, and streamline maintenance and support processes.
- Lead a small, high-performing team to design, develop, and release tools, automation, and enhancements that complement existing industrial simulation platforms.
- Collaborate closely with Simulation Consultants and project teams to identify pain points, inefficiencies, and opportunities for innovation.
- Drive adoption of best practices for software development, release management, and deployment in a fast-paced, project-driven environment.
- Ensure all technological solutions are designed to integrate seamlessly with commercial simulation software and plant systems.
- Prioritize initiatives based on impact to project delivery efficiency, system reliability, and client value.
- Serve as the technical authority for the engineering team, mentoring developers and ensuring high-quality, maintainable solutions.
- Evaluate emerging technologies and trends to maintain a competitive edge and inform roadmap decisions.
Who You Are
- You are a visionary technology leader who understands both industrial processes and the needs of engineering teams delivering complex simulation projects.
- You thrive at the intersection of strategy and execution — setting the roadmap while staying hands-on enough to guide development and make key technical decisions.
- You excel at translating project needs into innovative, practical tools and methods that increase efficiency and value.
- You are collaborative, able to partner with Simulation Consultants, project engineers, and leadership to align technology with delivery and client outcomes.
- You are motivated by impact — designing systems and solutions that make engineering faster, easier, and more effective while complementing existing industrial software.
Requirements
- Bachelor’s degree in Engineering, Computer Science, or a related technical field.
- 10+ years of experience in technology development, software engineering, or process engineering with hands-on experience in industrial simulation or automation.
- Strong understanding of process engineering fundamentals (chemical, petrochemical, refining, life sciences, mining, etc.).
- Experience with leading software or technology development teams in a project-driven environment.
- Expertise in software architecture, development, and release management practices.
- Strong problem-solving, analytical, and communication skills.
- Ability to mentor, inspire, and grow a small technical team.
Preferred Skills
- Experience with commercial industrial simulation platforms (Emerson, Honeywell, Rockwell, etc.).
- Knowledge of automation, control systems, and industrial protocols.
- Experience with cloud-based tools, virtualization, and orchestration to support development and simulation platforms.
- Familiarity with Python, C#, or other development languages relevant to engineering software.
- Experience in project delivery consulting or supporting field engineers with technical solutions.
Why Onyx 360?
Onyx 360 is a Connected Performance company focused on helping every part of the industrial enterprise work together. We take a flexible, vendor-agnostic approach—mixing solid engineering fundamentals, hands-on experience, advanced analytics, and automation—to give teams a clear, 360° view of what’s happening, from the plant floor all the way up to the front office.
If you’re passionate about solving real-world problems with elegant, scalable solutions, you’ll thrive here.
Why Engineers Choose Onyx 360:
- Technically Challenging Work – Tackle complex systems with cutting-edge tools and methodologies.
- Competitive Compensation & Benefits – Your expertise is valued – and rewarded.
- Startup Agility, Industrial Impact – Move fast, iterate often, and see your ideas shape real-world operations.
- Performance-Based Awards – Earn results-driven incentives tied to your measurable impact.
- Empowered People, Balanced Lives – We build an environment of trust, flexibility, and support – so you can do your best work and still live your best life.
Our Culture
- Fearless Innovation – We experiment boldly, challenge assumptions, and learn fast. Curiosity and technical rigor drive our edge.
- Ownership & Accountability – Engineers own their code, their models, and their outcomes. We step up, speak out early, and take pride in delivering real impact.
- Radical Transparency & Respect – We share data, decisions, and feedback openly. Every voice matters, and every idea is heard.
- Strength in Support – Collaboration is our superpower. We build each other up, troubleshoot together, and celebrate wins as a team.
Additional Information
Applicants will be required to pass a background check and drug screen.
Work Authorization
Onyx 360 will only employ those who are legally authorized to work in the United States. This is not a position for which sponsorship will be provided. Individuals with temporary visas such as E, F-1, H-1, H-2, L, B, J, or TN or who need sponsorship for work authorization now or in the future, are not eligible for hire.
Equal Opportunity Employer
Onyx 360 is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, national origin, age, marital status, political affiliation, sexual orientation, gender identity, genetic information, disability or protected veteran status. We are committed to providing a workplace free of any discrimination or harassment.
Ready to shape the future of digital twins? Apply today!