OstraCustom work

Custom work

Ostra builds software on commission: web and mobile apps, AI systems, integrations with existing systems and the architecture around them.

Discuss your ideaSee a project

Custom work

The technologies we build with, by field.

Design, build and delivery stay with the same team.

  • Web and apps

    Python · Django · JavaScript · Angular · C# · .NET Core · Android

  • AI and LLM systems

    Retrieval-Augmented Generation (RAG) · LLM applications · AI agents and tool use · Model Context Protocol (MCP) · n8n agent workflows · LLM gateways with PII redaction and field filtering

  • Integrations and ERP

    Odoo 17 · Custom modules in Python and JavaScript · REST APIs and integrations · n8n workflows

  • Data and platforms

    PostgreSQL · MySQL · Elasticsearch · SQL · Docker · Microsoft cloud services

  • Architecture

    Solution architecture · High-level and technical design · API design · Project Start Architecture (PSA) · GEMMA · Common Ground

  • Quality and delivery

    CI/CD with GitHub Actions · Git · Unit and system testing · Code reviews · Development standards · Deployment strategy

Discuss your idea

For foundations and non-profits

At Ostra, custom work for foundations and non-profit organisations costs less than €1,000 for development and deployment. Hosting and infrastructure costs are billed separately and discussed up front.

Our expertise can be booked at any budget. We are happy to think along with you.

One condition

We only ask for a registration of your organisation as a foundation or non-profit. Nothing more is needed to use the rate.

What is included

Development and deployment fall under the rate. Hosting and infrastructure, such as servers, storage and domain names, are billed separately. We discuss those costs up front, so there are no surprises.

This falls within our rate for foundations and non-profits.

Discuss your situation

Projects

Custom work that has been delivered or is in progress.

Custom work · mobile app

Omroep ZOUT

A mobile app for Omroep ZOUT, the regional broadcaster in the Utrecht region, for iOS and Android.

Designed and built together with a fellow engineer. Ostra owns the Android version from development to publication.

What
Mobile app for iOS and Android
For
Omroep ZOUT, a regional broadcaster in the Utrecht region
Period
Aug 2026 – Nov 2026
Role
Design and build, together with a fellow engineer; Android from development to publication

Progress

Ongoing · Release 2 will be discussed around November 2026.

now
Release 1 · done
Release 2 · in discussion

Request custom work

Describe briefly what is needed. We reply within two working days.

Book a call

info@ostratechnologies.com