JackSenyitko
expensify

Full-stack Software Engineer at Expensify

Full-stack Software Developer & Design Enthusiast

I create and design web applications that solve problems for fellow humans. I love creating software that is both practical and beautiful.

What I Do

I build software from the ground up.

No matter the scope of the project, I've done it all. From mobile apps to backend APIs, I can help you build the software you need.

Dashboards

Data-driven applications that help your company provide better products.

Mobile Apps

Cross-platform mobile applications that work on both iOS and Android.

APIs

RESTful APIs that provide the basis for your company’s software.

Marketing Pages

Landing pages, blogs, and marketing sites that are created to convert.

Responsive Design

Websites that work on all devices, from mobile to desktop.

Data Storage

Databases that store your company’s data securely and efficiently.

Analytics

Tools to help you understand your products’ data and users’ behavior.

Security

Software built with security in mind to protect your company and users.

Showcase

Create something amazing.

Too many products these days are built in a rush. Creators have forgotten how to create something they are truly proud of. Users can feel that difference. I only work on projects that I'm proud to have created.

JackSenyitko

Full-stack Software Developer & Design Enthusiast

Checkout My Products

HogLite - Posthog Mobile Client

Checkout My Other Tools

Net Income CalculatorCompound Interest CalculatorMatrix SolverBase-64 DecoderBase-64 EncoderTax Bracket Calculator