Deltologic

Software for companies that sell on marketplaces

This software agency concentrates on sellers working through marketplace platforms, Amazon above all. The company says it designs custom software and AI automations for these sellers, combining technical expertise with a close interest in each client's results. Its services are organized around the operational problems sellers face, such as data that sits in separate systems, manual steps that slow everything down and integrations that need rebuilding as platform rules change.

Marketplace data integrations and automation

The integration service uses API and custom connections to pull sales, inventory and other data from marketplace platforms into a seller's own systems, so that the numbers can be read in one place. The development service builds tools that remove manual steps and streamline processes. The company describes this as taking the repetitive tasks out of a seller's operations, and it presents automation as a way to cut inefficiencies before adding new headcount.

Amazon SP-API migration and fee audits

For sellers with older integrations, Deltologic offers migration from Amazon's MWS interface to the SP-API, together with audits that look for redundant calls. The site says that cutting unnecessary calls and tuning the integration architecture can reduce the fees attached to the upcoming 2026 SP-API pricing. The firm also publishes guides on the MWS to SP-API move and on inventory performance.

SaaS tools built end to end

Where a seller needs a product rather than a one-off integration, the company builds software as a service. These are subscription tools designed, developed and run for marketplace businesses, with an emphasis on performance, scalability and ease of use. The firm also offers tech consulting for sellers who want guidance on platforms, automations and API integrations before committing to a build.

Case studies from webshops to car auctions

Past projects include a multi-module business intelligence solution for an Amazon seller, a Buy-Box monitoring and repricing tool, and an automated monitoring system for an Amazon agency. The site also describes a custom webshop built for a German printing company, a product monitoring tool used for Amazon algorithm research, a data extraction project for a large company, and an automated online car auction platform. Its SaaS work includes a platform for Amazon wholesale sellers.

A process from first call to ongoing support

The company describes a five-stage approach. It begins with a consultation to learn about the client's background and vision, then scopes the project and its goals. A kick-off phase assembles the project team and names a project manager responsible for communication and for managing risks to delivery. Collaborative design sessions follow, and development applies testing, continuous integration and documentation practices. Training helps staff use the system from day one, and ongoing support covers maintenance and further changes.