Custom Software Development
Tailored software solutions built from the ground up to solve your unique business challenges.
- Full-stack web applications
- Enterprise-grade architecture
- API development
- Legacy modernization
Our team specializes in
- React
- Next.js
- Node.js
- Python
- Azure
- OpenAI
- Anthropic
- n8n
- Make
What We Do
Our Services
End-to-end technology solutions that help businesses scale, secure their assets, and automate their operations.
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Capabilities
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Discuss your project
Fixed-price scopes · Free estimate in 48 hours
Website Development
High-performance websites that convert visitors into customers.
- React & Next.js apps
- E-commerce solutions
- CMS integration
- Performance optimization
Mobile App Development
Native and cross-platform mobile applications for iOS and Android.
- React Native & Flutter
- iOS & Android native
- App Store deployment
- Real-time sync
Security Solutions
Protect your digital assets with comprehensive security services.
- Penetration testing
- Security audits
- Compliance consulting
- Incident response
AI Powered Automations
Leverage AI to automate complex tasks and gain insights from your data.
- Custom AI models
- LLM integration
- Predictive analytics
- Computer vision
Workflow Automations
Streamline repetitive processes with intelligent automation.
- Zapier & Make.com
- Custom scripts
- CRM integrations
- Data pipelines
IT Consulting & Cloud
Strategic technology guidance and cloud infrastructure management.
- Cloud migration
- Infrastructure as Code
- DevOps & CI/CD
- Tech strategy
Ready to Start Your Project?
Let us discuss how we can help transform your business.
Get in Touch
Showcase
What clients say about each service
Real outcomes from real partners — one per service category we offer.
2×Inquiries within a month
“Sentinel completely rebuilt our website and booking platform in under 3 weeks. Our inquiries doubled within a month.”
40%Less admin workload
“They built us an AI-powered patient intake chatbot that cut our admin workload by 40%. The team understood healthcare compliance from day one.”
60%More parent inquiries since launch
“Professional, fast, and they actually listen. Our new site loads in under 2 seconds and parent inquiries are up 60% since launch.”
Process
Timeline depends on project scope.
We use agile development methodologies with bi-weekly sprints, allowing you to see progress regularly and provide feedback throughout the process.
Simple website2–4 weeks
Complex web application2–3 months
Enterprise solutions3–6 months
Each tick is a sprint review, every two weeks.
- 01
Free discovery call
We provide detailed estimates after understanding your requirements during our free technical discovery call.
- 02
Written estimate in 48 hours
Every project is scoped to your needs. We'll send a free written estimate within 48 hours of our first call.
- 03
Bi-weekly sprints
See progress regularly and provide feedback throughout the process.
- 04
Ongoing support
Security updates, performance monitoring, bug fixes, feature enhancements, and 24/7 emergency support for critical issues.
Manifesto
Built by Engineers. For Everyone. We're a team of paranoid sysadmins, obsessive frontend developers, and AI tinkerers based in NJ/NYC.
Our Mission
Sentinel Tech Solutions is a New York / New Jersey-based web development and IT consulting agency. We build next-generation applications and operate multiple SaaS products. We don't just talk about building software; we build and scale our own.
Fundlane A CRM for small-business funding brokers, is a product of Sentinel Tech Solutions LLC.Our Expertise
- aFull-Stack Web Development
- bPrivate AI Deployments (PrivateGPT)
- cIT Consulting & Microsoft 365
- dCybersecurity Advisory
- eSaaS Product Development
- fWorkflow Automation (n8n)
Team
Meet the Humans
We're a small team of obsessive builders based in NJ/NYC. We ship custom software and AI automations for teams who want results, not bureaucracy.
-
Ben KatsCo-founder -
Michael BelenkiyCo-founder
Security First
Every project starts with security.
Audits, best practices, and compliance-ready architecture baked in from day one.
- Projects shipped
- 47+
- Years combined experience
- 25+
- Certifications
- 12
- Average response time
- 4hr
Security services
- Penetration testing
- Security audits
- Compliance consulting
- Incident response
Credentials
- 12 certifications across the team
- Private AI deployments (PrivateGPT)
Your project portal
- A personal access code for each person
- 2-step sign-in for our staff
- Every sign-in and sign-off on record
Where we work
Serving Businesses Across New Jersey & NYC
We proudly serve businesses throughout the NJ/NYC metro area. Whether you're in Manhattan, Jersey City, Newark, or anywhere in between, our team delivers world-class technology solutions with local expertise.
We serve clients nationwide and internationally. Local clients benefit from the option for in-person meetings and faster on-site support when needed.
New Jersey
- Newark
- Jersey City
- Hoboken
- Paterson
- Elizabeth
- Trenton
- Camden
- Princeton
- Morristown
- Edison
New York City
- Manhattan
- Brooklyn
- Queens
- Bronx
- Staten Island
We provide comprehensive custom software development services across NJ and NYC, including web applications, mobile apps, enterprise software, API development, and cloud solutions. Our team specializes in React, Next.js, Node.js, Python, and Azure cloud platforms. We work with businesses of all sizes, from startups to enterprises, delivering tailored solutions that match your specific requirements.
Project costs vary based on scope, complexity, and timeline. We provide detailed estimates after understanding your requirements during our free technical discovery call.
While we're based in the NJ/NYC area and love working with local businesses, we serve clients nationwide and internationally. Our remote collaboration tools and processes ensure seamless communication regardless of location. However, local clients benefit from the option for in-person meetings and faster on-site support when needed.
Timeline depends on project scope. A simple website takes 2-4 weeks, a complex web application 2-3 months, and enterprise solutions 3-6 months. We use agile development methodologies with bi-weekly sprints, allowing you to see progress regularly and provide feedback throughout the process.
Yes, we offer comprehensive maintenance and support packages. This includes security updates, performance monitoring, bug fixes, feature enhancements, and 24/7 emergency support for critical issues. We believe in building long-term partnerships with our clients, not just delivering projects and disappearing.
We implement a wide range of AI solutions including chatbots, document processing automation, predictive analytics, LLM integrations (OpenAI, Anthropic), workflow automation with n8n or Make, and custom machine learning models. We focus on practical AI that delivers ROI, not just buzzwords.
Contact
Ready to Start Your Project?
Let us discuss how we can help transform your business.
- 01Free technical discovery call
- 02Free written estimate within 48 hours
- 03Fixed-price scopes, senior engineers
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