Custom Software Development

Turn Your Firm's Expertise into Software Clients and Agencies Can Use

Engineering firms run on models, methods, and data that took years to build. We develop the web applications, portals, and dashboards that put that expertise in front of clients, agencies, and your own team — and we stay on to host, maintain, and support them for the long haul.

Talk about your project
The opportunity

Your Analysis Is Valuable. Software Makes It Usable.

Most engineering firms deliver their best thinking as reports, spreadsheets, and PDFs. The analysis behind them — the models, the calculations, the data your engineers spent weeks assembling — stays locked inside desktop tools that only a handful of people in the firm know how to run.

That's changing. Clients and public agencies increasingly expect interactive tools they can use themselves: web applications that run scenarios, portals that show project data, dashboards that track conditions over time. And more public-sector solicitations now include a software component that has to be built, hosted, and supported for the full term of the contract.

Cavallo has worked with engineering, environmental, and construction firms since 2014. Our software practice builds on that foundation — custom web applications for engineering firms, plus AI development, company intranets, and learning management systems built for the way AEC firms actually work.

What we build

Software Development for Engineering Firms

Engineering Web Applications

We turn your firm's models and analysis into browser-based applications that clients, agencies, and stakeholders can use without installing anything. Your engineers keep ownership of the methodology; we build the interface, the backend, and the data pipeline around it.

What we do
Backend and frontend development, integration with the outputs of the modeling and GIS tools your engineers already use, user accounts and permissions, and scenario or report generation.
Why it matters
A working application turns a one-time study into an ongoing service — and differentiates your firm from competitors who can only hand over a PDF.

Client & Agency Portals

Secure, login-protected portals where clients can see project status, download deliverables, review data, and submit requests. Built around your workflows instead of forcing your team into a generic file-sharing tool.

Data Dashboards & Mapping

Dashboards and GIS-based map views that bring together monitoring data, asset inventories, inspection results, or program metrics — so decision-makers can see conditions at a glance and drill into the detail when they need it.

AI Development

AI assistants grounded in your firm's own documents, proposal and RFP support, archive search, and document extraction — deployed with access controls and human review. Not a generic chatbot.

Company Intranets

Intranets that give engineering firms one place for the employee directory, firm news, SOPs and standards, forms, and onboarding — with Microsoft 365 single sign-on and search that actually finds things.

Learning Management Systems

Training and certification platforms for internal training, continuing education and PDH tracking, certification programs, and paid courses for clients or the public.

Teaming on public work

A Development Partner for Public-Sector Bids

Some of the most interesting software work in the AEC world starts with a solicitation. A county, utility, or state agency wants a tool built around an engineering analysis — and they want one team accountable for the engineering, the application, and years of hosting and support.

That's where we fit. We team with engineering firms bidding contracts that require a software partner, contributing the technical approach, development plan, hosting architecture, and support terms for the application side of the proposal. If the contract is awarded, we build it with you and support it through the full contract term.

Where Custom Software Makes Sense

  • You're Bidding a Contract with a Software Component

    The scope calls for a web application, data portal, or dashboard alongside the engineering work — and you need a credible development partner on the team before the proposal is due.

  • Your Analysis Lives in Spreadsheets and Desktop Tools

    Your engineers have built something valuable, but only they can run it. You want to put it in front of clients or the public without rebuilding the methodology.

  • Clients Want Self-Service Access to Data

    Your team spends hours answering data requests and emailing files. A secure portal or dashboard would let clients get what they need themselves.

  • An Internal Prototype Needs to Grow Up

    Someone on your team built a useful tool on nights and weekends. Now it needs proper hosting, security, documentation, and a team responsible for keeping it running.

Sound familiar? Let's talk

How it works

From Idea to Supported Application

Timelines depend on scope. After technical discovery we provide a phased plan and estimate so you know what each stage involves before development begins.

  1. Discovery & Technical Scoping

    We meet with your engineers and project leads to understand the analysis, the data, the users, and the contract or business requirements. We identify what the application must do on day one and what can wait.

    Deliverables
    Requirements summary · User and data inventory · Phased scope and estimate

  2. Architecture & Prototype

    We define the data flow, hosting approach, security model, and integrations, then build a clickable prototype of the key screens so stakeholders can react to something real before full development.

    Deliverables
    Technical architecture · Interactive prototype

  3. Iterative Development

    We build in short cycles with regular demos. Your engineers validate outputs against their own results at each stage, so the application reflects the methodology exactly.

    Deliverables
    Working builds on a staging environment · Regular progress demos

  4. Launch & Hosting

    We deploy to a production environment, configure monitoring and backups, and train your team and your client's users. Documentation covers how the system works and how it's operated.

    Deliverables
    Production deployment · User and admin training · System documentation

  5. Support & Evolution

    Applications need care after launch. We provide hosting, maintenance, security updates, and support under a defined service agreement — sized to match a single project or a multi-year contract term — and continue to develop new features as needs evolve.

    Deliverables
    Support and maintenance agreement · Ongoing enhancements
Why Cavallo

Why Engineering Firms Build with Us

  1. We Know the AEC Industry

    We've worked with engineering, environmental, and construction firms since 2014. We understand how your firm wins work, how your clients evaluate partners, and how your engineers think about data and deliverables.

  2. We Speak Proposal

    We know what a public-sector evaluation team looks for. We can write the technical approach, staffing, hosting, and support sections for the software portion of your bid — clearly and on deadline.

  3. Built for the Long Term

    Public contracts and client tools can run for years. We write maintainable code, document what we build, and offer support agreements designed to last as long as the application does.

  4. You Work Directly with Our Team

    No account managers or offshore handoffs. The people scoping your project are the people building it — which keeps communication tight and accountability clear.

Explore the practice

Specialized Software

Beyond custom applications, our software practice includes three focused services: AI development grounded in your firm's own documents, intranet development for engineering firms, and learning management systems for training, continuing education, and certification programs.

Many software clients also work with us on their public face — a website redesign that showcases the tools and capabilities you've built. See examples of our work for engineering and environmental firms on our work page.

Frequently Asked Questions

What kinds of software do you build for engineering firms?

We build web applications that turn engineering analysis into tools clients can use, secure client and agency portals, data dashboards and map-based views, AI tools grounded in your firm's documents, company intranets, and learning management systems. Every project is custom — we start from your firm's workflows and data rather than a template.

Can you team with our firm on a public-sector proposal?

Yes. We team with engineering firms bidding contracts that include a software component, and we can contribute the technical approach, development plan, hosting architecture, and support terms for the application portion of the proposal. If the contract is awarded, we build the application with your team and support it through the contract term.

Can you build on top of our existing models, spreadsheets, or tools?

In most cases, yes. Your engineers keep ownership of the methodology, and we build the application layer around it — ingesting model outputs, replicating calculations in code, or connecting to existing data sources. We validate results against your team's own outputs before anything goes live.

Do you provide hosting and long-term support?

Yes. We offer hosting, monitoring, backups, security updates, and ongoing support under a defined service agreement. Agreements can be sized for a single client tool or for a multi-year public contract with formal response-time requirements.

How is a custom software project scoped and priced?

Every project begins with technical discovery so we understand the users, the data, and the requirements. From there we provide a phased plan and estimate, so you can see what each stage includes and fund the work in logical steps. Ongoing hosting and support is priced separately based on the service level you need.

Get started

Have a Tool in Mind — or a Bid That Needs One?

Whether you're turning your firm's analysis into an application or assembling a team for a public-sector solicitation, let's talk through the scope and what it will take to build and support it.

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