Augment your existing team
Give your developers room to focus. Hand off a defined backlog, an integration or modernization work they cannot get to, with clear ownership and coordination with your team.
Clear the backlog.
Connect your systems.
Keep business moving.
Senior-led software development for businesses running C#/VB.NET applications, SQL-heavy workflows and disconnected ERP systems. Get practical improvements, reliable systems and an accountable engineer who understands your business.
Discuss your application →
Built around your business
Two ways to move your software forward
When the backlog grows or an important application needs attention, bring in experienced help that works with your existing systems and people.
Own a business application
Get ongoing development and maintenance when a full internal team does not fit your business. Work directly with a senior engineer to keep your application reliable and improve it as your needs change.
SQL Server
Slow queries, unreliable reports and manual reconciliation hold teams back. Put over 20 years of database experience to work improving SQL Server performance and the workflows that depend on it.
Microsoft Access
Maintain the Access tools your business relies on, improve data quality and plan a practical migration when your workflows outgrow them.
C# & VB.NET Applications
Extend and maintain the .NET applications your team uses every day. Turn business requirements into practical web applications, workflow improvements and maintainable code.
Legacy .NET Modernization
Improve aging applications in manageable steps. Assess dependencies, reduce technical debt and modernize the parts that matter while protecting existing business workflows.
Cloud Development
Plan and deliver cloud improvements in Azure or AWS where they fit your application, operational needs and budget.
Desktop Applications
Support and improve desktop applications that keep daily operations running, from data entry and tracking to reporting and specialized workflows.
ERP, API & EDI Integration
Connect your ERP, business applications and external partners. Reduce duplicate entry, manual CSV transfers and disconnected processes with integrations built around your operations.
Ways to work together
A clear starting point. A defined outcome.
Start with a plan, deliver one valuable improvement, or build an ongoing partnership.
Application assessment
Review architecture, dependencies, technical debt and delivery bottlenecks.
The outcome: a prioritized improvement plan through a paid, fixed-scope engagement.
Delivery pilot
Complete one valuable integration, workflow improvement or focused modernization project.
The outcome: an agreed deliverable with clear acceptance criteria, tests and documentation.
Monthly development partnership
Maintain a prioritized backlog with agreed delivery capacity, regular releases and progress reporting.
Clear expectations: support hours, incident handling, concurrent work and exclusions are agreed in advance.
Fixed fees for well-defined work. Monthly retainers for reserved capacity. Hourly discovery when the scope needs investigation.
How delivery works
AI-assisted execution. Senior engineering accountability.
AI helps accelerate delivery where appropriate. Jonathan remains accountable for understanding your systems, reviewing the work and delivering maintainable software.
Your systems, your control
Agree on approved AI tools and data handling before work begins. Keep client repositories, credentials, data and AI workspaces separate.
Review before release
Build testing and human review into delivery, with acceptance criteria and a deployment plan appropriate to each change.
Knowledge that stays with you
Keep code and documentation in client-owned systems, with release notes and handoff information that make maintenance easier.
Selected experience
Practical software for complex operations
Experience contributing within established development teams and taking full responsibility for business applications, from architecture and database work through testing and deployment.
Manufacturing application modernization
Worked within a development team to modernize manufacturing web and desktop applications while preserving established business functionality. Contributions include converting legacy Visual Basic code to C#, refreshing Web Forms applications and migrating ERP integrations from PeopleSoft to SAP.
Developed gRPC services using modern .NET and Protocol Buffers to connect manufacturing software backed by Oracle databases.
Technologies: C#, Visual Basic, .NET Framework, modern .NET, Web Forms, gRPC, Oracle, ERP integration
Manufacturing execution software
Maintained and enhanced an established manufacturing execution system as part of defect-resolution and customization teams. Investigated customer-reported issues, implemented requested functionality and addressed technical debt.
Worked across desktop application components, services and SQL queries to troubleshoot problems and support manufacturing requirements.
Technologies: C#, .NET, WPF, WCF, Microsoft SQL Server
Production, inventory and shipping systems
Led development and maintenance of a custom manufacturing system spanning production, inventory, warehouse operations, shipping and field merchandising. Managed and mentored a development team alongside hands-on engineering and project planning.
Built handheld inventory-scanning tools, supporting APIs, equipment-status dashboards and carton-scanning workflows integrated with carrier shipping APIs and EDI. Delivered improvements to inventory accuracy, shipping speed and manual data entry.
Technologies: C#, .NET, WinForms, MVC, Web API, SQL Server replication, SignalR, handheld scanners, shipping APIs, EDI
B2B pricing and ordering applications
Maintained and enhanced business-customer web applications, including a pricing and ordering portal. Implemented features and resolved defects across application code, database operations and enterprise integrations.
Developed and optimized MySQL queries, adapted database schemas and built and maintained NetSuite integrations to exchange data with business systems.
Technologies: C#, .NET, MVC, MySQL, NetSuite integration
Logistics application ownership and modernization
Served as the sole developer responsible for architecture, development, database changes, testing and deployment of an international shipment-tracking application. Replaced a legacy Web Forms system with a deployed Blazor application covering bookings, routing, shipment milestones, purchase orders, warehouse workflows, documents and reporting.
Added AI-assisted purchase-order document processing to support data entry, and developed API and EDI interfaces for exchanging shipment information with external business systems.
Technologies: C#, ASP.NET Core Web API, Blazor/WebAssembly, SQL Server, API integrations, EDI, AI-assisted document processing
Software Previews
Software built for daily operations
Data entry portals, dashboards, shipment tracking and reporting: practical applications shaped around the way a business works.
Your development partner
Work directly with Jonathan Knowsley
An experienced software developer focused on C#, VB.NET, SQL and business systems. Work directly with the engineer responsible for understanding your application and delivering the improvements.
Let's talk
What is slowing your business down?
Tell Jonathan about your application, integration challenge or backlog. Together, identify a practical next step.