We developed an application that allows to remotely control the execution of tasks by field workers, to generate accompanying documentation, as well as implement the full cycle of relations within the contractor organization using various levels of access for subcontractors, team leaders, foremen and organization leaders. We integrated Stripe's payments APIs for the management of payment plans and subscriptions. As a result, a comprehensive SaaS solution was developed for sale to B2B customers so that they can optimize their work of monitoring the safety of field workers.