“Implementing their AI agents completely transformed our customer support pipeline. Hands down the best tech integration we’ve done this year.”
Sarah Jenkins
CEO at NexaFlow
South Dakota keeps two clocks. Sioux Falls runs Central time, Rapid City and the Black Hills run Mountain, and the line falls roughly along the Missouri River. We build systems that respect both.
Book a 30-minute callTwo things make up most of what we build. The first is an AI voice agent, which is a phone line answered by software that talks to the caller in normal language, works out what they want, and books, routes or answers on the spot. The second is workflow automation, meaning software that carries information between the tools you already run, so a form, a calendar and a CRM stay in step without anyone retyping anything. A CRM is simply the customer database your sales or front desk team works out of. For a South Dakota business, the interesting part is the clock. One company can have a Sioux Falls office on Central time and a Rapid City crew on Mountain time, and every rule you write about opening hours, callbacks, after-hours voicemail and daily reports has to know which one it means. Software handles that cleanly and consistently. Spreadsheets and habit do not.
We deliver remotely from Brooklyn, which puts us on Eastern time, one hour ahead of Sioux Falls and two ahead of Rapid City. In practice our morning is your morning east of the river. Nine for us is eight in Sioux Falls, and the rest of the day lines up almost exactly. West River is tighter. When we sign off at 5pm Eastern it is only 3pm in the Black Hills, so we push standing calls into our afternoon to protect that end of your day. The same arithmetic goes into the build itself. Business hours on a Retell voice agent get set per location rather than once for the whole company, so a Rapid City line does not open an hour early because someone typed in the Sioux Falls hours. Scheduled jobs in n8n, the tool we use to wire systems together, run on the local clock of whoever the output is for. We write the time zone down at the start rather than discovering it in testing.
Phone agents built on Retell that answer or place calls, understand the caller in natural language, qualify them, and book straight onto a calendar.
We wire your CRM, forms, calendar and inbox together with n8n so records and follow-ups move on their own instead of being retyped.
Agents built on Claude, LangChain and LangGraph that reason through multi-step work, pull from your systems and finish the task end to end.
Custom software with AI built in from the first commit, for teams whose workflow no off-the-shelf product actually covers.
Fast, accessible sites structured so people and AI search engines can both read them, wired into the same automations you run elsewhere.
A straight read on which parts of your operation are worth automating first, which to leave alone, and what order to do it in.
Healthcare is our clearest match. Sioux Falls anchors two large regional health systems, Sanford Health and Avera Health, and the clinic work we did for Flowstate covers that same shape of problem: appointment booking, patient report generation, inquiry triage, OCR document handling and routing into Slack. OCR just means reading text off a scanned page. Sioux Falls is also a genuine financial services town with large credit card and banking operations, and back-office work of that kind tends to be document heavy, which suits automation. Black Hills tourism has a call volume pattern rather than a call volume problem: bookings, group enquiries and rally week in Sturgis all arrive in bursts, and software can take every one of those calls at once instead of queueing them. Agriculture and ranching are the honest gap. We have not built for a grain operation or a cattle producer, and we will say so rather than dress up a generic workflow as sector experience.
We take on work from businesses anywhere in South Dakota. The 18 cities and towns below are a signpost rather than a boundary. Delivery is remote, so there is no travel radius making one place more practical than another.
We work with businesses across the United States from Brooklyn, New York and St. Petersburg, Florida. Delivery is remote, so distance is not what shapes a build.
Serving businesses across the United States from Brooklyn, New York and St. Petersburg, Florida. See all locations
It adds a decision, not a difficulty, as long as the decision is made at the start. South Dakota is divided between Central and Mountain time roughly along the Missouri River, so Sioux Falls and Rapid City sit an hour apart on the clock. Every rule in a system that mentions a time has to name which zone it means. Opening hours on a phone agent. The cut-off for same-day callbacks. When the after-hours message starts playing. When a daily summary lands in someone’s inbox. We set those per location rather than once for the company, so the Rapid City line opens at nine Mountain and the Sioux Falls line opens at nine Central, and neither is a translation of the other. The mistake we design against is a single company-wide setting that quietly runs an hour off for half your people. Written down at the start it costs nothing. Discovered later, it means retesting everything that touches a clock.
Yes, and after-hours is often where it earns its place first. A voice agent is software answering a phone line, so it does not keep hours unless you tell it to. The useful part is deciding what it should do differently at night. Most businesses want a smaller job done out of hours: confirm who is calling, capture the reason, book into the next available slot, and flag anything urgent for a person in the morning. Anything outside that set gets a clear message and a callback promise rather than an agent improvising. In South Dakota there is a second wrinkle. If your published hours are Central and someone in Rapid City dials at what feels to them like mid afternoon, they can be inside your closed window without realising it. We set the greeting and the routing per line and per location, so the message a West River caller hears matches the hours that actually apply to them.
Size is the wrong test. Repetition is the right one. The question to ask is whether there is a conversation, or a piece of copying, that happens many times a week in almost the same way. A five-person clinic booking a hundred appointments a week by phone has a stronger case than a hundred-person company where every call is different. Small teams also tend to get more from the automation half than the voice half, because the pain is usually one person holding several jobs together by hand: taking the enquiry, entering it, chasing it, reporting on it. Wiring those steps together removes the retyping and the dropped follow-up without changing how anyone works. We would rather start with one narrow, obviously repetitive process and let you judge the result than sell a small team a large system. If nothing in your week is repetitive enough, we will tell you that too.
No, and we will not pretend to a local presence we do not have. Evolvv AI works from Brooklyn, New York, and delivery is remote. Everything in a build of this kind happens over video calls, screen shares and shared access to your own systems: the discovery conversation, the demo, the changes you ask for, the handover, and support afterwards. Nothing about a voice agent or a workflow automation requires anyone to stand in your office. What being out of state does mean is that we do not know your market by instinct, so we ask more questions at the start about how your customers behave, what they call about and what they expect to hear. It also means we do not have South Dakota clients today. You would be judging us on work done elsewhere, and we would rather you know that plainly and decide than find it out later.
Let’s put AI to work in your business. Start the conversation and see how far we can go, together.
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