Some engineers focus on individual parts. John Sweetser has built his career by understanding how entire systems work together. That perspective has guided him through roles in national security, spacecraft design, engineering leadership, and mission architecture, where solving complex problems often depends on seeing the bigger picture rather than a single component.
Growing up in Loveland, Colorado, Sweetser was surrounded by engineering from an early age. Everyone in his immediate family worked in the profession, making curiosity and problem-solving part of everyday life. Outside the classroom, he competed nationally and internationally in snowboard cross as a member of the Steamboat Springs Snowboard Team. The discipline and resilience he developed through competition would later shape the way he approached engineering challenges.
Sweetser attended Colorado Mountain College before earning both a bachelor’s and master’s degree in Mechanical Engineering from the University of Colorado Boulder in 2012. He began his career at Sandia National Laboratories, where he spent five years working on modeling and simulation for national security applications. The experience taught him to think beyond individual components and understand how entire systems work together.
He later joined Lockheed Martin, where he focused on space vehicle design, before moving to Sierra Space. Over nearly six years, he took on increasing responsibility and was eventually promoted to Chief Engineer. Today, he serves as a Mission Architect at an aerospace startup, helping guide complex engineering programs.
Outside of work, Sweetser volunteers in STEM education, serves with a volunteer fire department, and supports sustainability initiatives. He also enjoys programming, working on his Jeep, snowboarding, ice racing, and spending time with family as he prepares to become a father.
What is your typical day, and how do you make it productive?
My day usually starts by figuring out which decisions will have the biggest impact. It’s easy to get pulled into meetings and emails, but I’ve learned that the most valuable work often happens when I have time to think through a complex problem without interruptions. The rest of my day is spent working with different engineering teams, reviewing technical decisions, and making sure everyone is working toward the same mission. Before I wrap up, I make a plan for the next day so I can start with clear priorities instead of reacting to whatever comes first.
How do you bring ideas to life?
I start by understanding the entire problem before trying to solve one piece of it. Early in my career at Sandia National Laboratories, I learned to think about the whole mission rather than individual components. Once I understand how everything fits together, I break large problems into smaller, manageable pieces. I also believe the best ideas come from collaboration. Bringing together people with different technical backgrounds almost always produces better solutions than working alone.
What’s one trend that excites you?
The continued growth of digital engineering and advanced modeling and simulation. Engineers can test ideas earlier than ever before, which helps teams identify problems before they become expensive. That allows us to spend more time improving designs instead of fixing mistakes later.
What is one habit that helps you be productive?
I write everything down. Whether it’s an idea, a question, or a lesson learned, I don’t rely on memory. Keeping organized notes helps me stay focused and makes it much easier to revisit ideas weeks or months later.
What advice would you give your younger self?
I’d tell myself to be more patient. Early in your career, it’s easy to think you need to move quickly and prove yourself. Looking back, I’ve realized that experience can’t be rushed. Every project, every challenge, and even every mistake teaches you something that becomes valuable later. Focus on learning as much as you can instead of worrying about what’s next.
Tell us something you believe almost nobody agrees with you on?
I think engineers sometimes spend too much time chasing the perfect solution. In reality, a simple, reliable solution delivered on time is often more valuable than a perfect solution that arrives too late. Progress usually beats perfection.
What is the one thing you repeatedly do and recommend everyone else do?
Learn outside your own field. Some of the most valuable lessons I’ve learned didn’t come from aerospace. They came from working on vehicles, programming, volunteering, and talking to people with completely different experiences. You never know where your next great idea will come from.
When you feel overwhelmed or unfocused, what do you do?
I step away from the computer for a while. Competitive snowboarding taught me that overthinking usually doesn’t improve performance. Sometimes the best thing you can do is reset. I’ll go outside, work on my Jeep, or spend time with family. When I come back, I usually have a much clearer perspective.
What is one strategy that has helped you grow your business or advance in your career?
I’ve always tried to understand complete systems instead of focusing on just one specialty. That mindset started during my work in modeling and simulation at Sandia and continued through spacecraft design at Lockheed Martin, engineering leadership, and now as a Mission Architect. The people who create the most value are often the ones who can connect different disciplines and help everyone work toward the same objective.
What is one failure in your career, how did you overcome it, and what lessons did you take away from it?
I’d remind myself that careers aren’t built all at once. Every role taught me something different, whether it was modeling and simulation, spacecraft design, or leading engineering teams. Don’t spend so much time worrying about where you’ll be in ten years. Focus on learning everything you can from the opportunity that’s in front of you.
What is one business idea you’re willing to give away to our readers?
I think there’s an opportunity to build a better platform for capturing engineering knowledge while projects are happening. Too much valuable experience disappears when projects end or people move on. Organizations would benefit from preserving those lessons in a way that’s easy for future teams to search and apply.
What is one piece of software that helps you be productive? How do you use it?
Visual Studio Code is one of my favorite tools. I use it for programming, testing ideas, and writing automation scripts that eliminate repetitive work. Even simple automation can save hours over the course of a project.
Do you have a favorite book or podcast you’ve gotten a ton of value from and why?
One book I’ve gone back to several times is The Design of Everyday Things by Don Norman. It’s a reminder that great engineering isn’t just about making something function correctly. It’s about designing solutions that people can actually understand and use. That’s a lesson that applies far beyond engineering.
What’s a movie or series you recently enjoyed and why?
I recently watched Project Hail Mary and really enjoyed it. It has the space exploration element, but what stood out to me was how the main character approaches problems. He doesn’t panic or try to solve everything at once. He works through each challenge step by step, which is pretty relatable as an engineer.
Key learnings
- Looking at the entire system instead of focusing on one component often leads to stronger solutions.
- Asking better questions is more valuable than trying to have all the answers.
- Technical expertise and clear communication are equally important for successful engineering leadership.
- Learning outside of your own field can introduce ideas that improve decision-making and innovation.
- Practical, reliable solutions delivered on time often create more value than chasing perfection.