Principal Software Engineer

Smith Arnold Partners provided pay range

This range is provided by Smith Arnold Partners. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

US$/yr - US$/yr

Annual Bonus

Direct message the job poster from Smith Arnold Partners

If you’re an experienced software engineer who wants to build things that actually move — fast, accurately, and at scale — this is a role worth considering.

This is a role for engineers who want to build the core — not just bolt things on.

If you want to own complex systems, influence product direction, and work in an environment where your expertise is valued and your career can thrive — let’s talk.

Apply now or message us directly for a confidential conversation.

We’re a well‑established global tech organization that builds the software and systems behind some of the most advanced, high‑speed electromechanical equipment in the industry. Our technology helps run the operations behind critical communications and logistics around the world.

Location:

Norwalk, CT

Salary: US$ – US$ + Bonus

Right now, we’re looking for a Senior Principal Software Engineer to take a leading role in architecting and delivering the software that powers our next generation of machine control systems. This is a hands‑on, senior‑level position where you’ll have real ownership, technical influence, and direct impact on the business.

High Visibility:
You won’t be buried in code no one sees — this role is front and center across engineering, product, and executive teams.

Complex, Real‑World Problems:
This isn’t app development. You’ll be building control software for high‑speed, precision‑driven systems that integrate mechanical, electrical, and software components.

Stability + Innovation:
Join a company that’s been around for decades — but continues to evolve. The tech is serious, the teams are strong, and the roadmaps are ambitious.

Long‑Term Career Growth:
This isn’t a stepping‑stone job. It’s a long‑term opportunity to lead, grow, and shape the future of how our machines perform.

• Design and develop real‑time control software in C++ for large‑scale, high‑performance electromechanical systems
• Lead cross‑functional efforts across software, hardware, systems, and manufacturing
• Guide architecture and technical strategy for multiple products and platforms
• Debug and optimize at the system level — from code to motion control to hardware integration
• Play a key role in roadmap planning and technical decision‑making

• 10+ years of experience in object‑oriented software design and full‑life‑cycle development
• Deep hands‑on experience in C++ and real‑time operating systems (such as RTX)
• Strong background in mechatronics, machine control, or similar system‑level environments
• Ability to lead multidisciplinary teams and drive projects through ambiguity to delivery
• Excellent communication skills — both with engineers and stakeholders
• BS or MS in Computer Science or a related field

• Experience with motion or servo motor control
• Exposure to .NET, Java, or ASP.NET
• Background in SQL Server, Oracle, or web‑based service architecture
• Knowledge of industrial automation or paper‑handling/mailing systems

Mid‑Senior level

Full‑time

Information Technology