Coresyn Systems Private Limited

Private AI systems,
built the way you'd build them
if you had the time.

Coresyn builds production-grade AI platforms for companies that want to own their infrastructure, their data, and their intelligence layer. Document intelligence, workflow automation, agentic systems, and operational AI, deployed on your cloud or ours, running the models you choose.

01
Private AI
platforms
02
Document
intelligence
03
Workflow
automation
04
SaaS
replacement
05
AI gateway
& routing
06
Agentic
systems

Practical AI infrastructure
for real operations.

We don't do slide decks or proof-of-concepts that never ship. Every engagement produces working software deployed into production, on your infrastructure, integrated with your systems, owned by you.

01 / FOUNDATIONAL

Private AI Platforms

Self-hosted LLM infrastructure with hybrid search, retrieval-augmented generation, and agentic reasoning. Your models run inside your VPC. Your data never leaves your network. Works with any model provider or fully offline with open-source models.

RAG Vector search ReAct agents Self-hosted
02 / SPECIALIZED

Document Intelligence

Turn contracts, invoices, reports, and operational documents into queryable knowledge with cited answers. Multi-format ingestion, structured extraction, semantic chunking, and citation tracing built on production-grade retrieval pipelines.

OCR Extraction Citations Hybrid search
03 / OPERATIONAL

Workflow Automation

Replace manual processes with automated pipelines. Connect cloud storage sources, monitor for changes, extract structured data, route it to the systems that need it. Webhooks, integrations, and AI augmented decision flows orchestrated end to end.

n8n Webhooks Event-driven Pipelines
04 / STRATEGIC

SaaS Replacement

Audit your current SaaS stack and build ground up replacements that you own. CRM, quoting, finance, operations, all tailored to how you actually work. Private, integrated, and designed around your processes instead of generic templates.

Custom SaaS Integrations M365 SSO GCP / AWS
05 / INFRASTRUCTURE

AI Gateway & Model Routing

One API for every model. Route requests across OpenAI, Anthropic, Google, and self-hosted open-source models based on task, cost, and latency. Token-level metering, per-team budgets, automatic failover, and prompt versioning. Swap providers without touching application code.

LiteLLM Multi-provider Failover Cost control
06 / AUTONOMOUS

Agentic Systems

AI that doesn't just answer questions — it executes multi-step workflows autonomously. Agents that plan, use tools, query databases, call APIs, recover from failures, and escalate to humans when the stakes demand it. Research pipelines, report generation, data reconciliation, all running hands-off.

ReAct agents Tool use Human-in-the-loop LangGraph

Infrastructure you own.
Intelligence you control.

The AI tooling market is overwhelmingly built around vendor lock-in. SaaS products that hold your data hostage. APIs that change pricing overnight. Models that get worse without warning. Contracts that make it cheaper to stay than to leave.

Coresyn exists for companies that want a different arrangement. We build systems that run on your infrastructure, route through the models you choose, and store data in databases you control. If you need to change providers, you change providers. If you need to audit, you audit. If you need to go fully offline, you go offline.

We work with companies that have outgrown generic tools but don't want to staff an internal AI team. We become the engineering bench that delivers production systems in weeks, not the agency that bills hourly for another prototype.

I

Ownership over subscription

You own the codebase, the data, the deployment. No licensing traps or exit fees.

II

Private by architecture

Self-hosted models, isolated VPCs, encrypted storage. Not an afterthought.

III

Model-agnostic

OpenAI, Anthropic, Google, open-source. All supported. No vendor lock-in to any one provider.

IV

Production, not prototypes

Every deliverable is production-grade from day one. No "we'll rebuild this later" technical debt.

Systems in production,
across industries.

A representative sample of the engagements we deliver. Some clients are public, others are anonymized for confidentiality. What they share is a need for private, production-grade AI infrastructure.

Professional Services · Document Intelligence

Contract & Knowledge Base Automation

Delivered

A law firm in Bangalore had 12,000+ contracts spread across SharePoint, shared drives, and email attachments — nobody could find anything, and renewal deadlines kept slipping. We built a system that ingested the entire corpus, extracted key terms, renewal dates, obligations, and deadlines automatically, and made it all searchable with cited, source-linked answers. Role-gated access so partners see everything, associates see their practice area. Plugged straight into their existing SharePoint and Google Drive setup.

RAG Extraction templates Hybrid search Citations RBAC SharePoint / Drive
Infrastructure · AI Routing

Multi-Model AI Gateway

Delivered

A fintech company in Singapore had five teams all hitting OpenAI directly with no visibility into cost, no fallback when the API went down, and no way to experiment with other providers without rewriting application code. We built a gateway that sits between their apps and every model provider — OpenAI, Anthropic, Google, their own self-hosted Llama instances. Routes each request based on task type, cost ceiling, and latency. Token-level usage tracking, per-team budgets, automatic failover, and a prompt versioning layer so they can A/B test without redeploying. They've since swapped primary providers twice without touching a single application.

FastAPI LiteLLM Redis PostgreSQL Token metering Prompt versioning Auto-failover
AI Engineering · Autonomous Agents

Agentic Workflow Orchestration

Delivered

A market research firm in Mumbai was spending 40+ analyst hours per week compiling reports from public filings, news feeds, and internal databases — copy, paste, summarize, repeat. We built an agentic system that does it autonomously. Multi-step AI agents plan the research, pull data from a dozen sources, cross-reference findings, draft structured reports, and flag anything that needs a human eye before publishing. The orchestration layer handles tool calls, retries on failure, manages context across long-running jobs, and includes human-in-the-loop checkpoints for high-stakes outputs. What took a week now takes overnight.

ReAct agents Tool orchestration LangGraph FastAPI PostgreSQL Human-in-the-loop Retry & recovery
Developer Tools · Private AI

Private Code Review & Dev Intelligence

Active engagement

A healthcare software company in Pune with 80 engineers wanted Copilot-level code review but couldn't send their codebase to external APIs — regulatory and IP constraints made it non-negotiable. We're building them a private alternative that runs entirely on their infrastructure. Reviews PRs against their own style guides and architectural patterns, flags security issues, suggests refactors, and generates context-aware documentation. The model is fine-tuned on their codebase, not the public internet. Hooks into GitHub Enterprise via webhooks. Every suggestion is traceable, auditable, and never leaves their network.

Self-hosted LLM vLLM RAG over codebase GitHub / GitLab webhooks FastAPI Tree-sitter Docker
Compliance · High-Trust Industries

On-Prem Document Intelligence

Delivered

A defence contractor in Germany needed document intelligence across classified operational files but couldn't use any cloud-based AI tool — data residency and audit requirements made it impossible. We deployed the entire system inside their air-gapped network. Open-source models running locally via vLLM, encrypted credential storage, complete audit trails on every query, and identity integration through their existing SAML provider. Zero external dependencies. Passed their internal security review on the first submission.

Self-hosted LLM Ollama / vLLM SAML / OIDC Audit logs Air-gap ready
Automation · Cross-System Workflows

Intelligent Document Pipelines

Delivered

A logistics company in Chennai had a back-office team of four people whose entire job was checking a shared folder for new shipment documents, opening each one, typing the key fields into their management system, and filing the original. Every day, dozens of PDFs. We automated it end to end — pipelines watch their Google Drive and SharePoint for new uploads, classify each document on arrival, extract structured fields, and push the data straight into their downstream systems. The team now handles exceptions instead of data entry.

Google Drive SharePoint S3 Webhooks Event triggers Classification
Logistics · International Relocation

Private AI Operating Platform

Active engagement

An international relocation company in Dubai needed a single system that could think across their entire operation. We built a private AI platform with a unified knowledge layer over operational documents, policies, and regulatory filings — hybrid search, retrieval-augmented Q&A, all running inside their own VPC. Now expanding into quoting, booking, finance, CRM, and move management, consolidating three commercial SaaS products into one company-owned platform.

FastAPI React PostgreSQL Qdrant Qwen 2.5 72B GCP private VPC M365 SSO n8n

We build for clients.
We also ship our own.

Live product

TalkingDocuments

A production document intelligence platform built on the same architecture we deploy for clients. Upload any document format and get cited answers, structured data extraction, and automated workflows. Bring your own model, run on your infrastructure, or use our hosted version. Multi-tenant, enterprise auth, and on-prem ready.

Ingest
PDF, DOCX, PPTX, XLSX, images, HTML. 15+ formats with OCR.
Reason
Hybrid search, ReAct agents, cited answers from any LLM you choose.
Automate
Connect cloud storage, run workflows, push results to your systems.
Visit talkingdocuments.com

Boring technology,
chosen deliberately.

BackendFastAPI / Python
FrontendReact / Vite / TypeScript
DatabasePostgreSQL
Vector storeQdrant
LLM runtimeOllama / vLLM
CacheRedis
CloudGCP / AWS / On-prem
AuthSSO / SAML / OIDC
Automationn8n / Webhooks
ContainerDocker / Compose
StylingTailwind CSS
ObservabilityOpenTelemetry

Direct engineering.
No layers in between.

PHASE 01

Scope it honestly

We start with what you actually need, not what sounds impressive in a proposal. Fixed price phases with clear deliverables. No ambiguity on what you're paying for and what you're getting.

PHASE 02

Build it right

Production architecture from day one. The code that ships to staging is the code that goes to production. No prototypes that need rebuilding. No technical debt by design.

PHASE 03

Hand it over

Your infrastructure, your codebase, your data. Full documentation. Your team can maintain, extend, or walk away at any time. No vendor lock-in to us or anyone else.

PHASE 04

Stay in production

Optional retainer for maintenance, improvements, and new phases. Or a clean exit with transition documentation. Whichever suits the engagement, your call, not ours.

Let's talk about what
you need to build.

We take on a small number of engagements at a time to give each project full engineering attention. If you're exploring private AI infrastructure, document intelligence, workflow automation, or replacing a SaaS product you've outgrown, reach out.

Initial conversations are free and confidential. We'll tell you honestly whether we're the right fit for what you need, and if we're not, we'll usually know someone who is.

Open the contact form →

Clients Remote worldwide
Entity Coresyn Systems Pvt Ltd