Kostas M.

Microsoft Automation & AI | MS Access, Excel, VBA, Power BI, CRM & SQL

Looking for a CRM, ERP, invoicing system, or a way to automate your business workflow? Tired of complex online platforms packed with features you'll never use, monthly fees that never end, data you don't actually own and no real support? I build user-friendly systems tailored exactly to your business, with just the functionality you need, no subscriptions, no lock-in, runs locally or on the cloud, and you own everything. I personally support you. If your team is still entering data by hand, copying information between spreadsheets, or waiting for reports that should run automatically, that's the problem I solve. Orders, invoices, clients, quotes, inventory, if it's being tracked in a spreadsheet or done manually, there is a better way. I build custom databases, automation tools and reporting systems using MS Access, Excel, SQL Server and Power BI for businesses that have outgrown their spreadsheets and need something that just works. Everything is built around the Windows and Microsoft Office tools you already use. No subscriptions. No lock-in. No unnecessary software - unlike off-the-shelf SaaS tools, I build systems around the way you work, not the other way around. You don't pay for features you'll never use, and you don't get trapped in a platform that owns your data. Your data stays under your control, on your local network, your server, or a secure cloud environment you control. And because the system is built for your business, you can make everyday changes yourself: add a category, update a list, bring in a new user, change a report. I work alone. No agency. No subcontractors. No handoffs. You talk directly to me from the first message through final delivery, and I know your system inside out because I build it myself. Why work with me? • I've delivered $200,000+ across 103 projects on Upwork and hold a Top Rated Plus badge. • I've been working with the Microsoft data stack for 20+ years, with clients in shipping, finance, manufacturing, compliance and hospitality. • I work alone. No agency. No subcontractors. No handoffs. You talk directly to me from the first message through final delivery. I know your system inside out because I build it, rather than passing pieces of the work between different people. ⭐ “Perhaps the highest skill level I've seen in the database space.” - Paul Cracknell, OSR Enterprises What I build • MS Access: CRMs, order management, invoicing, quoting and operational databases • Excel automation: Power Query, Power Pivot and VBA solutions that eliminate repetitive work • Power BI: dashboards and KPI reporting, standalone or integrated with your Access/Excel system • Automated workflows: one-click reporting, email delivery through Outlook or Gmail, document generation and other repetitive processes • SQL Server, Azure SQL & Dataverse: secure backends for multi-user environments • Database upgrades & migrations: modernization, optimization and migration with minimal disruption Results from recent projects: • Replaced a MySQL-dependent nursery database with a fully local MS Access system for a US farming operation. Eliminated all ODBC dependencies, fixed six root-cause bugs, and delivered a clean offline system with zero remaining external links • Built a 476,000-record searchable archive for a UK appliance rental company migrating off a legacy system. Read-only Access frontend with SharePoint backend, full search interface, and PDF export • Built a multi-user order and inventory system for a food distribution company with Azure SQL backend, custom multi-level report sorting, and full order management workflow • Built a role-based product filtering CRM with SQL Server backend for a Dutch tourism company. Secure multi-user access, and custom product visibility rules • Built a rebate and residuals calculation engine for a US payment processing company. Multi-step VBA validation, tiered rate plans, automated Excel payout export, and full audit trail • Delivered 100+ Power BI reports for an agriculture and nursery operation. KPI dashboards, heat maps, field and grower filters, SQL-powered data model • Built a carbon credit project management system for an environmental firm. CORC ledger, sales tracking, automated payout engine, role-based login • Built an MS Access compliance database now used daily by AML teams across multiple departments • Automated invoicing system that cut billing delays by 80% • SQL Server migration for 25+ users with zero downtime Every result above is real and verifiable: portfolio entries, client reviews, and project details are available on my profile if you want to dig in. I also have working demos you can try before committing to anything. If you have a system that is slowing you down, tell me what's not working. I'll look at what you have, give you my assessment, and send you a clear plan before you commit to anything.