Custom Software Development for Connecticut & NYC Companies
NixMar Studio builds client portals, internal tools, CRMs and B2B platforms from Greenwich, CT for companies in Fairfield County, Westchester and New York City. NestJS, Next.js, Postgres and AWS. Projects start at $10,000 and run in fixed-scope phases with a dedicated senior team.
100%
Custom code
0
Templates used
$10K
USD starting at

The real problem
Signs your business has outgrown spreadsheets and off-the-shelf SaaS
Your team wastes hours in Excel
Spreadsheets that corrupt, duplicate data, and manual tasks a custom system would handle in seconds. Every lost hour is money you don't get back.
You pay for 5 SaaS that don't connect
Trello, invoicing, inventory, WhatsApp Business, email. Information scattered across 5 platforms and decisions based on incomplete data.
Your operation depends on one person
If that person gets sick or quits, everything stops. Custom software documents and automates your operation so it doesn't depend on anyone.

Solutions we build
Custom software we build: ERPs, CRMs, B2B portals and automation
Custom ERP
Centralize inventory, purchasing, sales, accounting, and executive reports in a single platform designed for your actual workflow.
Case: Management system for a distributor with 12 branches
Custom CRM
Prospect tracking, sales pipeline, and follow-up automation tailored to how your sales team actually works.
Case: CRM with WhatsApp Business integration for a real estate agency in Greenwich, CT
B2B Wholesale Portals
Platforms where your corporate clients place orders, check real-time stock, and download electronic invoices.
Case: Wholesale portal with tiered customer-level pricing
Process Automation
We eliminate repetitive manual tasks by connecting your systems. What used to take hours of manual work now runs on its own.
Case: Automatic electronic invoicing + daily manager reports
Internal Team Apps
Custom-built tools for your team: executive dashboards, expense approval, shift management, quality control.
Case: Production control app for a textile factory
Enterprise Integrations
We connect your software with SAP, HubSpot, Stripe, WhatsApp Business, your current ERP, or any external API.
Case: Real-time SAP + e-commerce store sync
Real success story
Case study: a B2B ordering portal for a wholesale distributor

-62%
Less operational load
3x
More orders processed
0
Billing errors
24/7
Orders without intervention
From processing orders by phone to an automated B2B portal
The problem
A distributor with 200+ wholesale clients processed every order by phone and WhatsApp. They had 3 people dedicated only to taking orders, frequent errors in quantities and prices, and zero real-time inventory visibility.
The solution
We built a B2B portal where each wholesale client sees their catalog with personalized pricing, places orders directly, checks stock in real time, and downloads electronic invoices. Fully integrated with the existing accounting system.
The result
62% less operational load in the first month. The 3 people who used to take orders now focus on customer service and sales growth. Billing errors dropped to zero and orders are processed 24/7 without human intervention.
Our development process
Our custom software development process, step by step
Discovery & analysis
1-2 weeksWe map your operation, your critical processes, and where the bottlenecks are. We don't write a single line of code until we know exactly what problem to solve and how to measure it.
Architecture & UX/UI design
1-2 weeksWe define the technical structure, design every interface, and validate with you before building. You see exactly what you'll receive before we start.
Iterative sprint development
4-8 weeksWe build in 2-week sprints with functional deliveries. You see real progress you can test, not PowerPoint presentations.
Launch, migration & support
1-2 weeksProduction deploy, full data migration, hands-on team training, and ongoing technical support post-launch.
Why choose NixMar Studio
Why companies choose NixMar for custom software
100% custom code, no templates
Every line of code is yours. No WordPress, no Bubble, no no-code. Zero technical debt from day one.
Modern & scalable stack
React, Next.js, Node.js, PostgreSQL. The same technology used by Netflix and Airbnb, adapted to your business.
SEO & performance from day 1
Your platform is born optimized for Google with fast load times. It's not an add-on, it's part of the development.
Ongoing post-launch support
We don't disappear after deploy. Monthly maintenance, security updates, and continuous evolution of your system.

Frequently asked questions about custom software
Custom software development FAQ: cost, timeline and support
Our custom software projects start at $10,000 USD for a focused first version (for example an internal tool, a client portal or an MVP with one core workflow). Larger platforms with several modules and integrations are scoped and priced in fixed phases, so you always know the cost of the next stage before it starts. When work is billed hourly, our rate is $95โ$140 per hour.
Your options are Manhattan product agencies, offshore development firms, freelancers, and smaller senior studios like NixMar Studio in Greenwich, CT. For most small and mid-sized companies, a studio with in-house senior engineers is the best balance of cost and accountability. Expect a four-phase engagement (discovery, design, build, then QA and launch) with working demos every two weeks.
A functional MVP takes between 6 and 10 weeks. More complex projects like a full ERP or multi-module platforms can take 3-6 months. We work in 2-week sprints so you see real progress from the first delivery.
We offer monthly maintenance plans that include bug fixes, security updates, new features, and scaling, so your system keeps running smoothly after launch.
Yes. Data migration is part of the launch process. We move your information from Excel, Access, other software, or any existing database to the new system with zero data loss and zero downtime.
We also work on existing systems. We can add new features, modernize the interface, improve performance, or connect your current platform with other services without starting from scratch.
No. We work with businesses of all sizes in Connecticut, Westchester and New York City, from 10-person firms to companies with regional operations. The whole engagement runs remotely over video calls and shared demo environments. If your operation needs more than Excel and generic SaaS, we can help.
By industry
Custom software and portals for your industry
Client portals for advisors, patient tools for practices and lead systems for agents each come with their own rules. See what we build for yours.
- Real EstateListing sites and lead capture for agents and brokerages.
- Medical PracticesPractice sites, patient portals and HIPAA-aligned apps.
- Financial AdvisorsCompliance-minded websites that build client trust.
- Law FirmsPractice-area pages that turn searches into consultations.
- Contractors & Home ServicesWebsites that turn local searches into quote requests.
Keep reading
Custom software guides
Costs, timelines and build-vs-buy decisions for B2B teams.
Get a quote for your custom software
Tell us what your business needs and we'll tell you exactly how to solve it, how much it costs, and how many weeks until it's running. No commitment.




