Farm Business Consultants are a national tax consulting firm. We migrated a complex tax optimization engine from legacy IBM technology to modern contemporary technology (Microsoft) for them. No documentation existed for the old system, so all requirements and design had to be re-engineered from the original codebase.
The project was high risk as the client had a hard deadline associated with tax filing, and due to circumstances, they were not able to update the old code base to meet changes in the tax code. Such, we had no backup plan or safety net. We had to succeed, and we did. There were a few long nights and missed weekends, but the team got it done. The client got their new system on time, their client's taxes were filed on time, and the project was deemed a huge success.