Agents that act on real systems.
Agents that take real actions on real systems (desktop, cloud, the OS) through MCP tooling. A 24/7 chief-of-staff agent, a cloud agent that deploys to live AWS, a real-time meeting copilot.
Bigcircle (bigcircle.ai) has built custom software for clients since 2019 and is now an AI-native implementation studio. We build AI agents, RAG over your own data, intelligent document processing and AI voice agents for products where a wrong answer costs money or customers, and take them into production. A core team leads every build, with about 100 vetted contractors for larger ones. You own the code.
Production hardening, a fixed-scope build, or a studio-led programme. The difference is how much of the delivery Bigcircle runs.
| Criterion | Production hardening | Fixed-scope build | Studio-led programme |
|---|---|---|---|
| Who leads | You built it, we finish it | We own it | We run it |
| What you get | Your prototype, taken into production | One working system at a fixed scope and price | A studio team of 3 to 8 engineers and QA |
| What you keep | Your code, with an eval set, model routing for cost and latency, and a safety net under it. | You bring the problem. Bigcircle delivers discovery, build, evals, and deployment against a fixed scope and price. | You bring the product context. Bigcircle owns the delivery rhythm and the hard technical calls. |
| When it fits | You have a prototype that will not cross into production. | The problem is clear and you want the result, not a team to manage. | You have a roadmap and no senior AI team to run it. |
| How Bigcircle handles this | The agent can only take the actions our code allows, and guardrails check each one before it runs. You own the code. | One point of accountability covers discovery, build, evals, and deployment. PII tokenization swaps personal data for tokens before any model sees it. You own the code. | The founder leads the team as fractional CTO. The same check in code and the same code ownership apply. |
Agents that take real actions on real systems (desktop, cloud, the OS) through MCP tooling. A 24/7 chief-of-staff agent, a cloud agent that deploys to live AWS, a real-time meeting copilot.
Citation-backed extraction and search over dense, regulated documents, with humans kept in the loop. A year-long build for an institutional client, an ESG and IMF research platform.
Evals, model routing, on-device inference, a PII-anonymization layer, and audit trails. The reusable toolkit that turns a clever model into something a serious company can actually run on.
A desktop AI chief-of-staff that plans a goal, acts across email, calendar, docs, and CRM, and checks its own work, with credentials that never leave the device. We built dynamic tool-discovery for it months before the labs made it a standard.
A real-time sales co-pilot that detects a live meeting, transcribes it on-device, and writes a clean, CRM-ready summary the moment the call ends. No audio ever leaves the laptop.
A DevOps agent that turns plain-English requests into safe, validated cloud changes, using MCP tools to inspect, apply, and roll back, all scoped to your own account.
We have already crossed that line. Many times.
We have taken AI to production in legal, cloud infrastructure, sales, and regulated document workflows. Hand us the build, or the prototype that stalled.
Prompting a demo is a weekend. Production AI (evals, model routing, grounding, the failure modes) is a different discipline, and most teams are learning it on your timeline.
It demos beautifully, then meets real customers. Latency spikes, costs balloon, it hallucinates on the inputs nobody tested, and there’s no one on call. That’s where projects stall.
Engineers who have actually taken AI to production are scarce and hard to assess. By the time you’ve hired one, the roadmap has slipped two quarters.
The team that builds yours has already shipped AI in production.
Anyone's demo can call a model. The distance to production is the unglamorous middle: identity, orchestration, data boundaries, model routing, guardrails, and the audit record. Four of those six are governance, and we build them as plumbing rather than policy, enforced in the request path on every call, not asserted in a document.
Every run acts as a scoped principal with its own token, never as the application.
Read the long versionThe tool bus advertises what exists. The token decides what this run may actually invoke.
Read the long versionIrreversible actions are promoted one at a time, on evidence, not switched on as a batch.
Read the long versionPersonal data is encoded before the model sees it and decoded after it answers.
Read the long versionEvery response is checked against policy on the way out, before it reaches your systems.
Read the long versionEvery step lands an entry you can replay afterwards, including the ones that failed.
Read the long versionEvery engagement is a working system, built in your repositories under your IP by the team that scoped it. The three differ only in how much of the delivery we run.
Choosing between the three is the engagement guide. Choosing between an implementation partner, building in-house, and an agency is the build-or-partner guide.
Your team built something that works in the demo and stalls on real inputs. We define what good means and build the eval set, route models for cost and latency, lock down the data path, and put a safety net under it before it takes traffic.
Best when you have a prototype that will not cross into production.
You bring the problem and we deliver the working AI system. Discovery, build, evals and deployment sit under one point of accountability, against a scope and price agreed before we start.
Best when the problem is clear and you want the result, not a team to manage.
A studio team of engineers and QA, led by our founder as your fractional CTO and architect, owns delivery on your AI roadmap. We run the build rhythm and make the hard technical calls; you bring the product context.
Best when you have a roadmap and no senior AI team to run it.
We lead with the record: years of client work behind the studio, real systems in production, the people to staff a large build, and AI shipped where failure is expensive.
A custom software studio first, AI-native now. Our earliest GenAI build, a fine-tuned, citation-grounded system a practicing attorney tested and signed off on, has run daily since 2023.
RAG, agents, and voice carrying real traffic across B2B SaaS, fintech, insurtech, cloud, and legal. The demo is the easy part; we have done the unglamorous rest.
Our core team scopes every build and keeps the critical delivery. When a build needs more people, contractors from this pool join it, so the work grows and who answers for it stays the same.
A multilingual insurance agent that answers in under a second, verifies every caller, and logs every call as a replayable record. Real-time AI where slow is a dropped customer.
“They'd already solved the exact failure modes we kept hitting.”
“Evals on day two, and they caught a failure mode our team would have shipped.”
“One engineer who had shipped this before moved faster than the pod we were planning.”
Tell us what you're building. We'll tell you whether it needs a fixed-scope build, a prototype taken to production, or a programme we run, what's achievable, and where the real bottlenecks are.