PromptWorks office in Philadelphia
Emily Lowing, software engineer at PromptWorks


Building something from the ground up, we could customize it and connect it to our vision.

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Yes, we can build that

When it comes to web applications, no problem is too complex for us to solve. We’ve helped companies build all kinds of innovative new web applications, from cloud-computing portals to real-time intelligence systems.

We begin every project with a deep understanding of your company. We connect to your vision and get to know your needs. We work closely with you, from start to finish, to make sure your web application fits your goals perfectly.

Here’s a sample of the web application development services we offer:

  • MVP Development

    Validate product ideas and test hypotheses quickly with a “Minimum Viable Product” version of your web application.

  • Rapid Prototyping

    Speed up the design process by test-driving working versions or your software early and providing feedback.

  • UI/UX Design

    Build an app your customers love to use with our UI / UX Design experts.

  • Lean Product Development

    Get your product to market faster and more successfully using our lean approach.

  • AWS Deployment

    Take full advantage of Amazon’s scalable cloud computing infrastructure for your startup.

  • DevOps

    Improve your web apps’ security, availability, and performance with our infrastructure automation expertise

Greg Sterndale, co-founder of PromptWorks in Philadelphia, making an important point
Some PromptWorks employees and a laptop

Why PromptWorks?

They’re tuned into the project and act as part of our team. They help us achieve every goal that we set.

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Trusted by Startups & Fortune 500 alike

Whether you’re an entrepreneur with a revolutionary idea, or the CTO of a Fortune 500 company looking to streamline workflow, we can build the web application you need to succeed.

Our team has decades of experience developing web applications that are fast, scalable and stable. We use modern frameworks and libraries, like Ruby on Rails & React.js. And our proven Agile process means we consistently deliver software on-time and on-budget.

We’ve helped these companies (and more) build brilliant wep applications:

Jason Garber, co-founder of PromptWorks, pairing with another engineer
Some software development books on the PromptWorks bookshelf
A close-up of a PromtWorks engineer working on their laptop


They’re very passionate about having clean code and not hacking around in the system as opposed to other vendors. It’s been a positive partnership.

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Deeply-Skilled In the Technologies That Power The Web

Our team of software developers are experts in the technologies that power the web.

All of our developers were hand-selected after going through a rigorous technical evaluation process. They work in-house in our Philadelphia office. We never outsource your code to third parties, or use offshore devs because we’ve found the best results come from small, integrated teams that care about the success of your product.

We’re experts in:

Emily Lowing and Dave Mox, software engineers at PromptWorks
Jason Garber, Mike Nicholaides, and Greg Sterndale, founders of PromptWorks, working at the whiteboard

Our Process

A Process That Consistently Delivers Brilliant Web Applications (And Makes Your Job Easier)

At PromptWorks, we use an Agile process, which means we work closely with you in short, weekly sprints. We’ll be in constant communication, showing you new features as they are coded and getting your feedback. No last-minute surprises, no black boxes.

We test as we go to make sure your web application is always working as it should be. And our developers work on your application in pairs, which has been shown to lead to more robust, higher quality software.

Bottom-line: you get brilliant software on-time, on-budget, and without any headaches.

Discovery & Kickoff

We take the first few days to collaboratively plan and develop a strategy. We set up the codebase and test frameworks, and jointly generate a backlog of work for the upcoming phases.


Rather than disappearing for months while you wonder what's happening, we work in one or two week sprints, with your close collaboration and approval at every stage.


Our UI / UX Designers visualize user stories by creating wireframes, mockups, and prototypes.


Our Engineers implement the user stories and designs by building fully functioning code and automated tests.


Our team presents you with a working product, ready for you to test and validate before we iterate again.

Deployment & Handoff

We deploy your new production code to live traffic. Our engineers seamlessly hand off the project to your team, providing all the necessary training to make sure they have the resources needed to succeed.

Some PromptWorks engineers planning at the whiteboard
A screenshot of Clean Markets on a laptop

A Case Study

Clean Markets

Partnering with PromptWorks gave us the software development expertise we needed to develop a user-friendly experience for our signature product.

Ellen Lutz, Founder & CEO of Clean Markets

Delivering an advanced cloud computing portal, on-time & on-budget

Clean Markets – a leader in clean energy solutions – wanted to help building owners make smarter decisions about investing in clean energy. The idea was an online tool that would take the guesswork out of this complex decision.

PromptWorks worked closely with Clean Markets to design and build exactly what they envisioned. The finished web application is user-friendly and effective. It uses regression analysis to create statistical models that predict costs and savings for building owners. The tool was even built to become increasingly accurate as system data increases.

Not only has the tool helped Clean Energy work with building owners across the nation, it was recently awarded the Commercialization Challenge grant out a field of over 200 applicants. Read More

Jason Garber, Mike Nicholaides, and Greg Sterndale, founders of PromptWorks, playing foosball
Some software development books on the PromptWorks bookshelf
Some PromptWorks employees and a laptop


Ready to get your web application off the ground?