# Obdurate Systems > Custom operational software, workflow automation and systems integration built around the tools and processes a business already uses. Obdurate Systems builds internal tools and operational layers connecting shared inboxes, documents, spreadsheets, ERP, accounting and logistics systems. Engagements start with understanding the existing workflow, its business rules and exceptions, then building a focused solution and connecting it to the wider operation. Service pages describe potential solutions. Selected work describes contributed project scope; client names are withheld where indicated. Project scope, pricing and timelines are agreed after discovery. ## Services - [Operational software](https://www.obdurate-systems.com/services/operational-software): Internal tools, document intake, approvals and spreadsheet-based workflows. - [Systems integration](https://www.obdurate-systems.com/services/systems-integration): Connections and automation across ERP, accounting, email and logistics systems, including validation and exception handling. ## Solutions - [Solutions](https://www.obdurate-systems.com/solutions): Three focused starting points for improving operational handoffs. - [ERP integration services](https://www.obdurate-systems.com/solutions/erp-integration): ERP and API integration, field ownership, validation and failure handling. Assess native connectors and custom development against the actual workflow. - [AI integration services](https://www.obdurate-systems.com/solutions/ai-integration): Prospective AI-assisted workflows, pilot evaluation and human review. Illustrative use cases are not claims of completed AI projects. - [Email processing automation](https://www.obdurate-systems.com/solutions/email-workflow-automation): Incoming operational messages and attachments turned into validated, assigned work. This service addresses operational intake rather than email marketing. ## Company and contact - [Homepage](https://www.obdurate-systems.com/): Overview of services, selected work and the approach to delivery. - [About](https://www.obdurate-systems.com/about): Software experience and the approach to understanding and reinforcing existing operations. - [Vlad Constantinescu](https://www.obdurate-systems.com/vlad): Founder & CTO of Obdurate Systems. Profile, direct contact details and a downloadable contact card. - [Contact](https://www.obdurate-systems.com/#contact): Discuss a workflow, request a discovery call and review indicative engagement budgets and timelines. ## Selected work - [Logistics Control Tower](https://www.obdurate-systems.com/work/logistics-control-tower): Contributed operational integration work connecting shipment events, EDI/API flows and internal systems for monitoring and exception handling. ## Articles - [Articles](https://www.obdurate-systems.com/articles): Notes on operational software, build-versus-buy decisions and workflow bottlenecks. - [Build vs buy internal tooling](https://www.obdurate-systems.com/articles/build-vs-buy-internal-tooling-decision-guide): A decision guide for buying existing software or building a custom internal tool.