Full-stack studio · coldledger.tech

Custom software that ships to production.

Cold Ledger builds AI-powered applications, multi-tenant SaaS platforms, and technical domain tools for founders and teams who need real, reliable software — not another prototype that stalls.

Start a project View the ReeferTechPro case study

Full-stack: One accountable partner
AI + RAG: Grounded in your data
Multi-tenant: Built to scale

What I build

Software for teams that need more than a template.

From first architecture decision to production launch, Cold Ledger delivers the kind of technical software most agencies won't touch.

Multi-tenant SaaS platforms

Secure, scalable products with tenant isolation, role-based access, billing, and admin tooling built in from day one.

AI-powered applications

Practical AI features — hybrid RAG, assistants, and diagnostics — grounded in your data, not hallucinated guesses.

Technical & diagnostic tools

Domain software for technical fields: alarm databases, troubleshooting flows, and knowledge systems for real operators.

Full-stack engineering

End-to-end delivery across frontend, backend, data, and infrastructure — one accountable partner from idea to production.

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Featured work

A production platform, not a prototype.

All work

ProductionMulti-tenant SaaS · AI tooling

ReeferTechPro

AI diagnostics for transport refrigeration technicians

A production multi-tenant web application that puts expert refrigeration knowledge in technicians' hands — hybrid RAG over service manuals, AI-assisted diagnostics, a structured alarm-code database, and a document ingestion pipeline with OCR.

1,200+: Service manuals indexed
480+: Alarm codes structured
Multi-tenant: Tenant fleets supported

Next.jsTypeScriptPostgreSQLpgvectorHybrid RAGOpenAI

View case study

Why Cold Ledger

Trustworthy software, delivered by one senior engineer.

Grounded AI, not gimmicks

Hybrid retrieval over your manuals and documents means answers you can trust and cite.

Production-grade from the start

Auth, tenancy, observability, and testing baked in — built to run in the real world, not just demo well.

Fast, focused delivery

A senior engineer who ships. Clear scope, tight feedback loops, and working software you can see.

Have a technical product in mind?

Tell me what you're building. I'll help you scope it, architect it, and ship a version you can put in front of real users.

Start a project See how I work