Inventory & operations software
Reliable inventory and operational systems.
For businesses with complex workflows and disconnected software.
We work across WMS, 3PL, distribution, manufacturing, and retail. Those are examples of the complexity we handle, not a limit on who we help. Founder-led delivery with vetted .NET and React developers takes you from tangled systems to one dependable source of truth.
Our promise: free rework of anything outside the signed specification.
- One source of truth
- No manual re-keying
- Built to integrate
Manpreet Singh
Founder, PBX Digital — founder-led delivery with vetted .NET & React developers. LinkedIn
Delivery Framework
How an engagement runs
Four steps, the same every time. They take the guesswork out of bringing in outside engineering: clear scope before any build, founder-led architecture, and capacity that scales with the work.
We map the gap before we touch code
A short intake maps where you're short-staffed against what's in your pipeline, then comes back with a staffing and architecture plan. No build starts until the scope is clear.
Architecture stays with the founder
The architecture is led by the founder — five years of .NET experience — not handed to an account manager. Clean Architecture, SOLID, and security checks from the first commit, so what you get is still maintainable after the engagement ends.
We work in your tools
We work in your Slack or Teams and your Jira or Azure DevOps, on your cadence. White-labelled and invisible to your client, or named as a partner — your call.
Capacity that grows with the project
PBX is the founder, who codes, plus two vetted .NET and React developers ready to start — one around 20 hours a week, one around 10 to 12. Work is added as the project grows, so a capacity spike doesn't become a hiring project and a multi-phase build keeps the same hands on it.
What we build with
- Backend
.NET & C#
Clean Architecture, SOLID principles, and high-performance Web APIs designed for enterprise security and scale.
Clean architectureSecure APIsScale-ready services - Frontend
React / Next.js
Performance-first SSR/ISR builds using the App Router for optimal core web vitals and user experience.
App RouterSSR and ISRFast UX delivery - Database
SQL Server
Advanced relational design, query optimization, and secure migration strategies for complex data sets.
Relational modelingQuery tuningSafe migrations
Domain Expertise
Warehouse-grade experience in data integrity, integrations, and operational continuity.
The biggest risk in operational software isn't the code — it's the tangle of business logic and high-volume data moving between systems that were never meant to talk. That is the work PBX Digital knows: high-stakes transactional environments where a mistake is expensive.
The founder's background is in 3PL and warehouse management systems — the credibility signal, not the boundary. It is proof PBX can handle warehouse-grade complexity in security, data integrity, and audit logging. The same discipline serves distribution, manufacturing, retail, and any team with tangled workflows and disconnected software.
Legacy extension and modernization
Add modern .NET and Next.js modules alongside a legacy system to extend its life and features — a phased alternative to a risky full rebuild.
Data integrity and audit systems
Business logic for high-volume data: audit logging and reconciliation tools that hold up for governance and compliance.
Custom API integration
Resilient custom API integrations that connect older platforms to third-party services without breaking daily operations.
From the blog
Notes from the work
- API
From Fragile Flows to Enterprise Engineering: Modernizing WMS Integrations
In the world of 3PL and logistics, data flow is the lifeblood of the warehouse. Yet, many teams are still relying on fragile “low-code” workflows that, while helpful in the beginning, eventually become the biggest bottleneck in the supply chain.
- LLMs
Demystifying LLMs: A Software Engineer’s Guide to How Language Models Actually Work
As software engineers, we are accustomed to building systems based on determinism—where an input X always produces a predictable output Z. When we start working with Large Language Models (LLMs), however, many of us fall into the trap of treating them either like a traditional, deterministic data...
- LLMs
From Code to Cognition: An AI Guide for Software Developers
As software developers, we are used to being the ultimate source of logic in our applications. We write the code, define the database schemas, and establish the API contracts. But recently, a new paradigm has taken over the industry: Artificial Intelligence.
From Disconnected Software to One Reliable Operational System.
Stop losing hours to manual re-keying, fragile integrations, and siloed inventory. PBX's vetted .NET and React developers integrate into your workflow and build the operational backbone your business can depend on. Run an agency with more .NET or React work than staff? PBX is a reviewed bench you can put in front of a client — see For Agencies.