We build with TypeScript across the stack to catch bugs early and keep large codebases maintainable. Strong typing means fewer surprises in production and code that teams can grow with confidence.
Customer Reviews
I was astonished that, in such a short period of time, something that other companies had taken months to understand, this company was able to execute. Since then, we have never looked anywhere else. I would never consider another company. This is how much we believe in them.
The other agencies we looked at, frankly, wanted to tell us how great they were. Sembit instead asked a lot of probing questions and provided the kind of consultation that really made us comfortable in hiring them.
It's been excellent every step of the way. The initial conversations were excellent — we had an instant human connection. In addition to being professional, they also had a human touch that's irreplicable.
I've really loved working with them. Sembit always delivers what they say they're going to deliver, in the time they say they'll deliver it. Whenever we have a deadline for a task delivery, the team gives us detailed and frequent updates about their progress. It's been a great partnership.
Sembit's team really took on the mindset of our business which resulted in a better product with thoughtful decisions from developers. We have been able to have healthy discussions about the pros and cons of a design choices which ultimately makes a better product in the long run.
Sembit has over-delivered on their promises at every step of the process. They've come in ahead of schedule and below budget, and they let us know if we are asking for too much. They are clear communicators, and it made a world of difference for our company.
Full-Stack TypeScript
TypeScript can be used in both the front-end and the back-end of web applications. In our work with a manufacturing company, TypeScript was used on the server side to build backend APIs, querying Snowflake, and processing the data. TypeScript was also used in the front-end React Native mobile application.
This approach allowed:
Custom Front-End SPA
In another project, TypeScript was used for the front-end of a single page application designed for performance and usability.
The team initially explored alternative technologies but ultimately returned to TypeScript because of its flexibility, ecosystem support, and developer efficiency.
Highlights from this project:
Custom Online Playground
For Efficient Computer, we wrote a custom TypeScript front end using the shadow DOM for components and integrating the Monaco code editor (same one used for VS Code) into the web application. We also used TypeScript to create SVG-based node graphs to demonstrate data flow, as well as another view on HTML canvas with animated routing. A heavier framework such as Angular would have been more difficult to optimize.
Highlights from this project:
These are the situations where teams most often bring us in for TypeScript work, from building type-safe front ends and APIs to bringing structure and confidence to a large or fragile JavaScript codebase.
TypeScript is the default choice for building the front end of modern web applications. It enables fast, responsive interfaces that behave more like desktop applications than traditional websites. We build front-end systems using frameworks like React and Angular, which are powered by TypeScript. These applications are scalable, maintainable, and user-friendly. We can also build custom frameworks where React and Angular are not suitable.
Oregon-Based TypeScript Development Team
Projects completed
Years in business
Average Years Experience per Employee
Our Oregon-based team has deep experience building modern web applications using TypeScript. We work in real time with clients to solve both technical and business problems, not just execute code.
We understand how TypeScript fits into the larger application architecture. This includes APIs, databases, and front-end frameworks. Whether you need a new application built from scratch, an existing system improved, or additional development capacity, we bring practical experience across a wide range of industries.
Tell us more about your custom TypeScript development needs. We can help.
Get expert guidance from Nathan Theophanes (Sembit's President) and Shaun Davidson (Sembit's VP) regarding your TypeScript project. We'll be in touch in hours, not days.
TypeScript supports strong typing, but can still run loosely-typed JavaScript, allowing a migration path. Strong typing prevents common errors like comparing numbers to text or using incorrect variable names. These errors are caught during development instead of at runtime, which significantly improves code quality and reliability.
TypeScript is the default language for frameworks like React and Angular. We build user interfaces that are fast, interactive, and scalable. These applications behave more like desktop software than traditional websites. TypeScript ensures consistency and maintainability as applications grow.
TypeScript is increasingly used for backend development, especially in cloud and serverless environments. We build APIs that handle data processing, authentication, and business logic. Using TypeScript on both frontend and backend simplifies development and improves consistency.
TypeScript allows developers to define complex interfaces that describe how different parts of an application interact. This makes it easier to build large, modular systems. The flexibility of TypeScript's type system allows for advanced architecture patterns that are difficult to achieve safely in plain JavaScript.
Unlike JavaScript, which only shows errors when code runs, TypeScript checks code at compile time. This means fewer runtime errors and more stable applications. Developers catch mistakes earlier, reducing debugging time and improving overall efficiency.
TypeScript is well-suited for large-scale applications with many moving parts. It helps enforce structure and consistency across teams and codebases. This is especially important for SaaS platforms, enterprise applications, and long-term projects.
FAQ: TypeScript Development
Most of our TypeScript projects involve web applications that are either growing quickly or becoming difficult to maintain. If you have an existing app that feels messy, slow, or fragile, or if you need to build something new but want it done right the first time, you are a strong fit. We are especially effective when there is real business complexity behind the application. During an initial call, we can quickly assess how we can add value.
We operate as a project-based partner, not just a coding resource. That means we help define the problem, recommend the right approach, and then execute. In some cases, we fully own the build. In others, we embed into your team and collaborate closely with your internal developers. The structure depends on your needs, but the goal is always to move your product forward efficiently.
Yes, we can help internal teams by providing senior TypeScript developers who can contribute immediately. This is especially helpful when your team is overloaded, lacks specific expertise, or needs help accelerating delivery. We integrate into your workflows rather than forcing you to change how you operate.
We bill hourly based on the time spent, tracked to the nearest minute. There are no long-term retainer fees required. Some clients engage us for short-term fixes or small features, while others work with us for months or years as their development partner. The total cost depends on the complexity of the project, but our model is designed to be flexible and efficient.
We can usually begin with an initial discovery or technical review within 24 hours. For full development work, timing depends on current availability and project scope. In urgent situations, especially for support or bug fixes, we can often step in faster. We prioritize responsiveness, particularly when a system is actively impacting your business.
Yes, we can help with product strategy. Many of our TypeScript engagements involve helping clients think through product decisions, architecture, and user workflows. We frequently ask questions that go beyond code, especially if we see risks or opportunities. Our goal is not just to build what you ask for, but to help you build something that meets your business needs.
We are well-suited for long-term relationships. Some clients use us as their ongoing development partner, handling everything from new features to support and optimization. Others bring us in for specific phases and then transition back to internal teams. We are flexible and adapt to what makes the most sense for your business.
