# SigmaJunction

> SigmaJunction is a senior-only, fully remote software engineering firm (SIGMAJUNCTION DOO, Bačka Topola, Serbia). Three practices - custom software development, applied AI and business automation - delivered per project, as a dedicated team, or as a software-for-equity partnership. Every engagement starts with a free diagnosis and names the business metric the system must move. A focused v1 ships in 2-3 months.

## Services

- [Custom software development](https://sigmajunction.com/services/custom-software): Operational platforms, customer-facing products, internal tools and legacy modernisation.
- [AI solutions](https://sigmajunction.com/services/ai-solutions): Document intelligence, copilots, agentic workflows and forecasting - deployed with evaluation harnesses.
- [Business automation](https://sigmajunction.com/services/business-automation): Back-office workflows automated end-to-end across existing tools, priced by an audit.
- [Software engineering partner](https://sigmajunction.com/software-engineering-partner): What separates a partner from a vendor, and what we commit to in writing.
- [Software development in Serbia](https://sigmajunction.com/software-development-serbia): Working with a senior team on Central European Time - written per market (US/UK, DACH, France, Spain, Italy, Serbia).

## Commercial

- [Pricing models](https://sigmajunction.com/pricing): Dedicated team, per project (milestone billing), or partnership (equity / hybrid).
- [What custom software costs](https://sigmajunction.com/pricing/custom-software-cost): Honest cost bands and what moves them.
- [Free diagnosis](https://sigmajunction.com/free-diagnosis): 1-2 working sessions ending in a written build / don't-build verdict.
- [How we work](https://sigmajunction.com/process): Diagnose → estimate → build → operate; weekly demos, milestone acceptance, 90-day warranty.

## Evidence

- [Case studies](https://sigmajunction.com/work): Anonymised production systems across logistics, iGaming, legal, retail, energy and publishing.
- [Industries](https://sigmajunction.com/industries): Operations-heavy sectors - a representative list, not a boundary.
- [Blog](https://sigmajunction.com/blog): Essays on software as an investment, applied AI and engineering practice.
- [How to choose a software development partner](https://sigmajunction.com/blog/choosing-a-software-development-partner): Four signals, eight questions for the first call and the red flags - with a printable checklist.

## Contact

- [Contact](https://sigmajunction.com/contact): hello@sigmajunction.com - reply within one business day.

## Agent access

- Every page is available as Markdown: append `.md` to its URL (the home page is https://sigmajunction.com/index.md), or request it with `Accept: text/markdown`.
- [llms-full.txt](https://sigmajunction.com/llms-full.txt): all main English pages in one Markdown file.
- MCP server (Streamable HTTP, no auth): https://sigmajunction.com/mcp - tools to read the site, list services and articles, send an inquiry or email the partner checklist on a user's behalf. Server card: https://sigmajunction.com/.well-known/mcp/server-card.json
- [API catalog](https://sigmajunction.com/.well-known/api-catalog) (RFC 9727) and [OpenAPI](https://sigmajunction.com/openapi.json) for the inquiry, checklist and newsletter endpoints.
- Languages: English at the root; German, Serbian, French, Spanish and Italian under /de, /sr, /fr, /es and /it.
- [Legal notice](https://sigmajunction.com/legal-notice): company details (SIGMAJUNCTION DOO, registration number 22134272, tax ID 115257951).