Custom Software Development Services
MVP to production in 6 weeks
A focused engagement model: short discovery, fixed-price proposal, weekly demos. We work on validating startup ideas, building SaaS platforms, and modernizing legacy systems, shipping production code, not slide decks.
Capabilities
What We Offer
- Enterprise applications & internal tools
- SaaS platforms & cloud-native solutions
- System integrations & API development
- Legacy system modernization
- Database design & optimization
- DevOps & CI/CD pipeline setup
Tech Stack
Technologies
Why Notix
Software built to succeed in market
We build custom software the way we build our own products. Arhivix, our AI-powered document platform, now serves 500+ companies, and MaxPlayer, a cross-platform media player we took from seed to launch, reached 1M+ users. Across 50+ client projects in 10 countries, the same senior team ships production code, not slide decks.
Off-the-shelf tools are cheaper right up until they force your business to bend around their limits. Custom software earns its cost when a workflow, an integration, or a data model is core to how you compete. Our complete guide to custom software development walks through when a build beats buying, and how to budget it.
We start from the outcome you need and build the smallest system that delivers it, then grow from there. For most new products that means a working MVP in about 6 weeks, following the 6-week MVP playbook we use with startup clients.
What we build
What we build for clients
Custom software is the right call when a process is core to how you operate and nothing off the shelf fits it. We build internal tools and operations platforms that replace spreadsheets and manual handoffs, SaaS products with multi-tenant architecture and billing, and system integrations that connect an ERP, a CRM, and third-party APIs into one source of truth.
Recent client builds show the range: an MVP for a startup validating a new idea, an AI-assisted quoting and production system for a manufacturer, and an RFP and knowledge workflow for a consulting firm, alongside our own document platform serving hundreds of companies. If you are replacing something that already exists, we handle legacy modernization in low-risk stages rather than one risky rewrite.
How we work
Discovery to delivery, in artifacts
Every engagement runs through four phases, and each one ends in something you can see and use, not a status report.
Discovery
We map your workflow, users, and the outcome that defines success, then pressure-test scope against budget.
Artifact: A fixed-price proposal with milestones, an architecture outline, and a timeline.
Design
We turn scope into screens and a data model, validated with you before a line of production code is written.
Artifact: A clickable prototype, delivered in about 48 hours for MVPs, plus the data schema.
Development
We build in weekly increments, each one demoed as working, tested software. Weekly demos keep delivery predictable.
Artifact: A running staging build after every sprint that you can click through.
Delivery
We ship to production, migrate your data, and hand over documentation your team can run with.
Artifact: A live product, a CI/CD pipeline, and handover docs.
Engagement models
Ways to work with us
Every build is scoped to pay for itself, and you get a firm number after discovery rather than a vague estimate up front. Projects start at $25,000, and where you land from there depends on scope, integrations, and complexity. We publish real ranges by project type, from MVPs to enterprise platforms, in our software development cost breakdown. Three models cover almost every engagement, and we recommend the one that fits your stage and your budget.
Fixed-price MVP
Best for a validated scope you want in market fast
One price, one timeline, one working product. It suits a clear, bounded scope where you want a launchable MVP in about 6 weeks with no budget surprises. You approve the scope up front, we absorb the estimation risk, and you get production software at the end, not a throwaway prototype.
Time and materials
Best for products that will evolve as you learn
You fund a senior pod by the sprint and reprioritize the backlog every week as you learn from real users. It fits products where the scope will genuinely change, and you value the flexibility to steer over a fixed line item. You see working software every week and only pay for the work you direct.
Dedicated team
Best for a long roadmap and continuous delivery
An embedded senior team that works as an extension of yours, with the same standups, tools, and rituals as your own staff. It fits a long roadmap where you want continuity and deep product knowledge, scaling up or down as priorities shift, without the overhead of hiring in-house.
Proof
Outcomes we have shipped
A sample of what custom software looks like in production.
Technology
How we choose the stack
We pick proven tools with large talent pools so your software stays maintainable long after launch, not fashionable frameworks that are hard to hire for. Most backends run on Node.js, Python, or .NET, with PostgreSQL or MongoDB for data, containerized with Docker and deployed to AWS or Azure.
Architecture follows the problem, not the trend. We will tell you when a modular monolith beats microservices and when it does not, using the trade-offs in our architecture guide, and we choose the database around your access patterns, as covered in our SQL vs NoSQL guide.
Replacing an aging system? We modernize in slices rather than risky big-bang rewrites, so operations keep running while the new platform takes over. Our legacy modernization guide lays out the approach.
Our Work
Related Projects
Client Feedback
What Our Clients Say
“This system finally solved the chaos with our paperwork. All documents, invoices, and shipping docs are organized, sharing with clients is instant, and our accountant gets everything on time. We feel a real relief in our daily work.”
“I did not expect such a small team of developers to achieve these impressive results in such a short timeframe.”
“Everything was on time and without delay. Beyond the request they added some things that are very useful.”
FAQ
Common Questions
How long does a typical custom software project take?
Timelines vary with complexity. A focused MVP can be delivered in about 6 weeks, while enterprise platforms typically take 3 to 6 months. We give you a detailed timeline in the free consultation.
What is the minimum budget for a custom software project?
Our projects start at $25,000. The final cost depends on scope, features, and complexity, and we offer flexible engagement models. You can see real ranges by project type in our software development cost breakdown.
Will I own the source code and intellectual property?
Yes. You own all source code and IP outright, delivered in your own repositories. There is no lock-in and no per-seat licensing on the software we build for you.
How do you keep a project on scope and budget?
Fixed-price MVPs give you a defined scope for a defined price. On evolving products we demo working software every week and reprioritize with you each sprint, so there are no surprises at the end.
Can you work with our existing team and systems?
Yes. We integrate with your current systems through APIs, join your workflow, and can embed a dedicated team alongside your engineers when you need extra senior capacity.
Do you provide ongoing support after launch?
Yes. We offer maintenance and support packages that cover bug fixes, updates, performance monitoring, and new features, so your software keeps improving after go-live.
What happens in the first two weeks?
Discovery. We map your workflow and requirements and return a fixed-price proposal with scope and timeline. For MVPs we also produce a clickable prototype in about 48 hours so you can see the product before development starts.
Learn More
Related Reading
Ready to Get Started?
Book a free 30-minute consultation about your custom software project. We reply within 24 hours with an honest read on scope, timeline, and budget.