accepting new builds

We engineer the software your business runs on.

A small senior team building web platforms, native iOS apps, payment systems, and AI agents. We own it end to end, from the database schema to the production deploy.

in production today

  • web platforms
  • native ios
  • ai agents
  • payments
  • integrations

system.map

all services healthy
trace POST /v1/payments/intents201 created · 184ms

~/app — deploy

# merge to main → production

why bigdevelop

One senior team, from schema to ship.

Most software goes wrong in the handoffs. We keep strategy, design, engineering, and operations in one small team so nothing gets lost between them.

projects delivered
50+
years shipping
5+
first response
<24h
ship targets
3web, ios, android
  • ownership

    The engineers who design your schema also write the API, ship the app, and support it after launch.

  • direct line

    You talk to the people writing the code, not an account manager relaying messages.

  • clear scope

    Fixed scopes and written estimates before work starts. No hidden fees.

  • after launch

    Monitoring, fixes, and new features once you are live, from the same team.

capabilities

Every layer of a production system, one team.

From the phone call an agent answers to the ledger entry it writes. These are the systems we design, build, and run.

  • ai systems

    AI voice agents and AI employees

    Agents that answer calls, triage email, reconcile records, and book appointments. They call into your real systems, log every action, and hand off to a person when confidence drops.

    1. inbound callanswered on first ring
    2. transcribestreaming speech-to-text
    3. resolve intenttool call: calendar.lookup
    4. take actionbooking written to crm
    5. confirmsms receipt sent
    • tool calling
    • speech-to-text
    • evals
    • human handoff
  • web

    Web platforms and marketplaces

    Multi-tenant apps, vendor marketplaces, customer portals, and admin consoles. Server-rendered and typed end to end.

    • next.js
    • typescript
    • postgres
  • mobile

    Native iOS and mobile

    SwiftUI apps with offline sync, push, and background work, or one cross-platform codebase when that fits better.

    • swift
    • swiftui
    • flutter
  • payments

    Payments: cards and ACH

    Checkout, subscriptions, invoicing, payouts, and bank debits. Webhooks handled idempotently, with a ledger you can reconcile to the penny.

    card
    1. created
    2. authorized
    3. captured
    4. settled
    ach
    1. initiated
    2. pending
    3. cleared
    4. reconciled
    • stripe
    • ach
    • webhooks
    • ledger
  • automation

    Automation and integrations

    Accounting, CRM, calendar, and messaging sync. Queued jobs that retry instead of failing silently.

    • rest
    • oauth
    • queues
  • data

    Data and dashboards

    Operational dashboards, scheduled reports, and exports your accountant can open without a call.

    • sql
    • reporting
  • infrastructure

    Infrastructure and DevOps

    Preview deploys on every branch, managed Postgres, per-environment secrets, backups, and monitoring.

    • ci/cd
    • edge
    • observability
  • quality

    Testing and quality

    Typed contracts, unit and integration tests, and end-to-end runs on critical flows before anything merges.

    • unit
    • e2e
    • type-safe

build planner

Pick the pieces. See the system.

Choose what your product needs and the plan assembles on the right. It is the same starting point we use on every scoping call.

modules

build.plan.ts

plan ready

// build.plan.ts, generated from your selection

export const plan = {

surfaces:["web"],
services:["auth","api","billing","webhooks"],
data:["postgres","ledger"],
integrations:["stripe"],
pipeline:["typecheck","lint","test","preview","production"],

} satisfies System;

modules
2
services
4
integrations
1

Bring this plan to a call and we will price it.

Scope this build

ai employees

An AI employee for the busywork.

Custom agents that handle email, reports, scheduling, and invoicing inside the tools you already use. Every action is logged, and anything uncertain goes to a person.

  • Customer communication

    Replies to email, texts, and DMs around the clock.

  • Reports and analytics

    Revenue, payroll, and performance reports on a schedule.

  • Scheduling and bookings

    Appointments, shifts, and reminders kept in sync.

  • Invoicing and payments

    Invoices generated, payments tracked, reminders sent.

Explore AI employees

builds from $2,500

~/agents — ops

on shift
# ai employee, ops queue
coverage
24/7
first reply
<1mintarget
channels covered
4email, sms, voice, chat

1-on-1 ai coaching

One hour. Real answers.

Private coaching for business owners who want to put AI to work without guessing or buzzwords. Bring the real problem and leave with a plan.

Book a session

session.spec

limited slots
format
private, 1-on-1
length
60 min
rate
$250 / hr
covers
  • tool selection
  • workflow design
  • market strategy
  • any ai question

process

From first call to production in four stages.

The same pipeline on every build, so you always know what happens next and what you get at the end of each stage.

  1. 01 stage

    Discovery

    We map the business, the users, and the constraints before anyone opens an editor.

    out: scope doc + estimate

  2. 02 stage

    Architecture

    Data model, integrations, and milestones agreed in writing before code.

    out: system design + milestones

  3. 03 stage

    Build

    Weekly demos on preview deploys you can click through yourself.

    out: preview link every week

  4. 04 stage

    Launch

    Production release with monitoring, backups, and a support plan.

    out: live system + runbook

accepting new builds

Tell us what you're building.

Send a few lines about the problem. An engineer replies within 24 hours with next steps. No commitment.