Dueline: Bill & Balance Tracker
A privacy-first native iOS app for tracking bills, income, and account balances, with no accounts, no ads, and no analytics.
Category
iOS
Stack
SwiftSwiftUIiCloudVercel
2026
Houston, TX
Hi 👋, I'm Fenil Shah.
Full-stack engineer.From API to UI.
I build full-stack web platforms and REST APIs with C#/.NET, TypeScript, and Python, from SSO and backend services to responsive UIs, and design data integrations and automation pipelines on AWS. On the side I ship projects like a Dueline: bill tracker App.
Tools I work with
Currently working at Resource Data as a Senior Software Engineer
5+
Years shipping software
7
Side projects shipped
50+
Vendor integrations built
Projects
Selected work
Products, experiments, and developer tools that show how I think, build, and ship.
Bilt Rewards Calculator
A mobile-first calculator for estimating Bilt Points and Bilt Cash across the Blue, Obsidian, and Palladium cards.
Category
Web AppFrontend
Stack
Next.jsReactTypeScriptTailwind CSSVitest
2026
Premier Edge Notary Solutions
A marketing and booking site for my mobile notary business, serving the Katy, TX area with same-day and after-hours signings.
Category
Web AppFrontend
Stack
Next.jsReactTypeScriptTailwind CSSResendVercel
2026
Texas Electricity ETL
A Python pipeline that ingests Texas electricity-plan data, maps it to utility territories, and loads a normalized snapshot into PostgreSQL nightly.
Category
DataBackend
Stack
PythonPostgreSQLGitHub Actions
2026
About
The Person
Behind The Code
I'm a Senior Software Engineer based in Houston, Texas, with 5+ years shipping business-critical, full-stack systems in production across C#/.NET, TypeScript, and Python.
I currently work as a Senior Software Engineer at Resource Data, where I architected and shipped a full-stack .NET/C# and TypeScript web platform (SSO, REST APIs, backend services, and a responsive UI) driving dynamic rule-based logic for a business-critical student fund purchasing system. I own the AWS ECS deployment pipeline for our containerized services and mentor engineers on codebase standards and code review.
Before that, I built data integrations moving records across 50+ vendor systems into a central SIS (cutting data errors 23%), automated 10+ scheduled data workflows on AWS SES, and worked across SQL Server, BigQuery, Snowflake, and MySQL. Earlier in my career at Paycom I built OOP-based HR software used by 1,000+ clients.
I like owning a service end-to-end: shipping frequently, writing unit and integration tests, and holding code to a high standard. Whether it's a .NET web platform, a Spring Boot REST API, or a Python ETL pipeline, my focus is reliable systems that make real work faster.
Outside of work I build side projects like Dueline, a privacy-first iOS bill tracker on the App Store, a website for my mobile notary business, and a self-hosted homelab NAS, plus a Bilt Rewards calculator and a couple of Texas energy data tools. I hold a B.S. in Computer Science from the University of Houston.
5+Years shipping software
7Side projects shipped
50+Vendor integrations built
1000+Clients served in production
Technical Expertise
languages
C#/TypeScript/JavaScript/Python/Swift/Java
frameworks
.NET / .NET Core/ASP.NET MVC/React/Next.js/Node.js/Spring Boot
cloud
AWS (ECS, SES, Route 53)/Azure/Docker/Git/GitHub Actions
data
SQL Server/MySQL/PostgreSQL/Snowflake/BigQuery/DynamoDB
Get In Touch
Looking for a full-stack engineer who ships?
I'm interested in full-stack engineering, backend and API work, and product teams building business-critical software.
Location
Houston, Texas
Open to remote and hybrid opportunities.
Open to relocation in the U.S. for the right opportunity.
Or send a message