We partner with businesses to design, build, and deliver full-stack software across web, mobile, IoT, and automation, so you can focus on running your business, not managing your tech.
From a single-feature MVP to a full production system, we cover every layer of the stack.
For businesses that need a fast, professional online presence or a full custom web application, not a template.
For startups and businesses that need iOS and Android apps without the cost of two separate codebases.
For teams that need powerful, cross-platform desktop tools with native performance.
For hardware companies and OEMs that need firmware, connectivity, and a cloud dashboard, end to end.
For teams ready to scale or modernize their infrastructure and deployment pipeline.
For businesses that need to connect systems, expose data, or build a backend from scratch.
For operations and data teams that want to eliminate manual work and unlock insights from their data.
For teams with an existing codebase that needs an honest outside review before scaling or rebuilding.
For businesses with live software that needs a reliable, responsive engineering partner on retainer.
We focus on understanding your business challenges first, then select the optimal technology stack to solve them.
From frontend to backend, mobile to desktop, Python scripts to cloud architecture - we handle the complete solution.
Every line of code serves a purpose. We deliver solutions that drive real business value, not just technical implementations.
From initial consultation to deployment and maintenance, we collaborate with you through every step of the development process.
No black boxes, no surprises. Here's exactly what to expect when you work with us.
We start with a free 30-minute call to understand your goals, constraints, and timeline. No sales pitch. Just an honest conversation about whether we're the right fit.
We deliver a clear written proposal: what we'll build, how long it will take, and what it will cost. We prepare thorough requirements documentation before any code is written.
We build iteratively with regular updates so you're never in the dark. We don't disappear for weeks; you'll see progress, ask questions, and course-correct early if needed.
Real problems solved for real clients. Here's what we built and why it mattered.
A homeowner needed a smarter way to track maintenance tasks across multiple properties. We built a full-stack web app with an AI chatbot that answers maintenance questions, plus native iOS and Android apps, turning a manual, error-prone process into an automated, always-accessible system.
A startup needed a cross-platform mobile app for peer-to-peer video streaming with AR virtual tours, a technically complex product with tight market timing. We delivered iOS and Android apps with WebRTC streaming, AR overlays, and a WordPress plugin integration, meeting their launch deadline.
A company undergoing a Quality Management System transition faced migrating thousands of Word and PDF documents manually, a process that would take months. We automated the entire pipeline: document scanning, content analysis, and structured migration, cutting the timeline to days with zero data loss.
We speak your stack — or help you choose the right one. Technologies are grouped by what they help you build.
Build products users can access anywhere
Reliable services that power your product
Scale, automate, and add intelligence
Connect hardware to the digital world
I've known and worked with Kevin for about five years and have always found his work to be top-rate. I contracted his new firm, Mengarelli Engineering, to develop and test mobile apps for a new video streaming service, and they delivered a great product—on time and on budget. I was especially impressed by the extensive product requirements document they prepared for us before we had even awarded them the business. I've since sent a couple of other projects their way. Highly recommended!
Additional references available upon request.
It depends heavily on scope. A simple automation script and a multi-platform mobile app are very different projects. What we always do first is write a detailed requirements document so you get a fixed-scope proposal with a clear number before any commitment. We'll discuss budget on the discovery call and be upfront if your goals and budget don't align.
Small automation or scripting projects can take days to a couple of weeks. A full-stack web or mobile app typically takes 4–12 weeks depending on complexity. We scope carefully up front and build iteratively so you see progress and can course-correct throughout, rather than waiting until the end.
Yes, and we prefer it when clients are focused on their business outcomes rather than specifying implementation details. We translate your goals into technical requirements and keep you informed without drowning you in jargon. You stay in control of the what; we handle the how.
No. We work on projects of varying sizes, from focused automation scripts and API integrations to full multi-platform products. If you have a well-defined, smaller problem to solve, we're happy to scope it. The discovery call is a good way to find out if it's a fit.
We offer ongoing Maintenance & Support arrangements for clients who want a reliable engineering partner after launch: bug fixes, feature additions, security updates, and performance improvements. We also provide thorough handoff documentation so your team can own the codebase confidently if you prefer.
Absolutely. Whether it's a code audit, picking up a stalled project, adding features to an existing app, or helping a team move faster on a hard problem, we're comfortable stepping into existing work. We offer Technical Consulting engagements specifically for this.
Mengarelli Engineering LLC is a boutique software consultancy founded by Kevin Mengarelli, a software engineer with 11+ years of professional experience building production systems across web, mobile, embedded, and cloud.
Before starting Mengarelli Engineering, Kevin built production software across industries including renewable energy, medical devices, and rail, gaining hands-on experience at every layer of the stack. That breadth is what lets us take a project from a napkin sketch to a deployed, maintained product without handing it off between disconnected specialists.
When you work with us, you're working directly with the engineer building your software — not a project manager relaying messages to an offshore team.
Start the ConversationWeb, mobile, IoT firmware, cloud infrastructure. Not siloed to one layer.
We write requirements documents clients praise before a single line of code is written.
You talk to the engineer doing the work — always.
Tell us what you're building, what's blocking you, or just share a rough idea. We'll give you an honest assessment of what it would take and whether we're the right fit.
