Corban Global / Capabilities / Application Development
03 · Application Development

Build what the catalog can't.

Custom platforms for mission-critical workflows — from legacy modernization to greenfield products — delivered by senior engineers who understand procurement, compliance and the quiet rules of regulated industries.

80% senior engineers Section 508 / WCAG AA FedRAMP delivery TypeScript-first API-contract driven
Delivery org · live
FY25 Q3
Apps shipped, to date180+
Delivery acceleration3–5×
Production incidents P0/P10.4/yr
Deploys per week42
Avg. engineer tenure9yr
What's inside

Six interlocking capabilities, one accountable squad.

Every build engagement is an integrated squad — product, design, engineering, SRE — sized to your pace and held to a written outcome, not a timesheet.

A·01

Platform engineering

Internal developer platforms — golden paths, templates, policy — that move product teams 3–5× faster without breaking the bank.

  • Backstage / Port / bespoke portals
  • Templated IaC modules & pipelines
  • Self-service within guardrails
A·02

Legacy modernization

Strangler-fig migrations off mainframe, COBOL and classic .NET — without a rewrite, without a freeze, and without a year-long outage risk.

  • Event-interception + dual-write patterns
  • Data-gravity-aware decomposition
  • Parallel run + automated rollback
A·03

API & integrations

Hardened APIs that respect procurement, compliance and data residency — with contracts versioned, tested and documented from day one.

  • OpenAPI / AsyncAPI contract-first
  • Rate-limiting, quotas, monetization
  • Event backbones & outbox patterns
A·04

Web, mobile & kiosk

Production-grade React, Next.js, Swift and Kotlin builds — accessible, localized, and offline-capable where your audience needs it to be.

  • Section 508 & WCAG 2.2 AA baked in
  • Design-system-backed UIs
  • Offline-first for field & government use
A·05

Quality & reliability

Automated testing, SLOs, chaos drills and tracing baked in — not bolted on when the auditor calls.

  • Contract, integration & e2e test pyramids
  • Synthetic monitoring + SLOs
  • Blue/green & feature-flag rollouts
A·06

Embedded & staff aug

Senior engineers embedded with your team — retained 6–18 months — with knowledge-transfer and a clean exit baked into the contract.

  • Tech leads, architects, platform engineers
  • Co-owned backlog & OKRs
  • Structured handoff at milestone end
How we engage

Four modes, one spine — senior teams on your outcome.

We're allergic to staff-aug-as-default. Most engagements start with a two-week discovery that pins the shape before the SOW is counter-signed.

Phase 01 · 2 wk

Discover

Jobs-to-be-done, constraint mapping, and a calibrated engagement shape — including a "do nothing" option and a buy-vs-build recommendation.

Deliverable · Engagement shape + risk register
Phase 02 · 3–4 wk

Design

Architecture, API contracts, data model and UX — reviewed with your security, finance and audit leads before the first story card is cut.

Deliverable · ADRs + contract pack + prototype
Phase 03 · 8–24 wk

Build

Two-week iterations with shipped software at every boundary. Feature flags from sprint zero; user research every other iteration.

Deliverable · Working software, every two weeks
Phase 04 · continuous

Operate & evolve

SRE, feature evolution and on-call — fully managed or co-managed — with a written exit plan and knowledge transfer at every milestone.

Deliverable · 24/7 ops + feature roadmap
By the numbers

What our build teams have shipped.

Figures pooled across custom-software engagements delivered since 2019.

180+
Applications shipped
Web, mobile, kiosk and back-office — spanning government, healthcare, finance and logistics.
3–5×
Delivery acceleration
Measured vs. client baselines after adopting our internal platform blueprints.
80%
Senior engineers on team
Staff-grade or above — no bait-and-switch between SOW signature and sprint one.
9yr
Avg. engineer tenure
Longer than the typical consulting engagement. Your architect in year three is the one who built year one.
Technology

Boring, modern and supportable — in that order.

We favor technologies that will still be maintainable in 2030, have public-sector ATO precedents, and don't demand a 12-person platform team to operate.

Languages
TypeScript Go Python Kotlin Swift Rust
Web & mobile
React Next.js Remix SwiftUI Jetpack Compose React Native
Backend & data
Node / Fastify Go / gRPC PostgreSQL Kafka Temporal Redis
Delivery
GitHub Actions Argo CD Terraform Backstage LaunchDarkly Playwright
Featured engagement

A federal agency — 27-year mainframe to a modern platform in 11 months.

A cabinet-level agency needed to retire a 27-year COBOL benefits system without a freeze. We shipped a modern platform incrementally, running the two systems in parallel for eight months.

Federal cabinet agency · 50-state benefits
"Corban shipped working software into production on week six. Eleven months later, we retired a 27-year mainframe without a frozen intake window."
CTO Federal benefits administration
CASE 02 · Legacy modernization · 11 months

From COBOL batch to real-time platform — parallel-run the whole way.

We built an event-intercept layer, dual-wrote to old and new, migrated programs state by state, and retired the mainframe with the lights on.

11mo
End-to-end
0
Frozen intake days
62%
Cycle-time reduction
Frequently asked

What CTOs ask before a build.

Fixed-price or time-and-materials? +

Fixed-outcome is our default — you sign for a written outcome, not a headcount. We run T&M only for indefinite steady-state work where the scope genuinely cannot be pinned. In either case, senior engineers are not billed as associates.

Who owns the IP we build together? +

You do. Every SOW transfers full, irrevocable IP on delivery milestones. We keep anonymized architecture patterns and team know-how; your domain code and models are yours.

How do you handle knowledge transfer? +

Written from the start. Every milestone includes a pairing window, architecture decision records (ADRs), runbooks and a clean-exit plan. We've happily handed off 40+ codebases to client teams and hyperscaler partners.

What accessibility baseline do you ship to? +

WCAG 2.2 AA and Section 508 as the default floor. Government-facing work often targets the higher AAA contrast baseline. Accessibility testing is part of the pipeline, not a pre-launch scramble.

Can you work under FedRAMP / CJIS constraints? +

Yes. We have delivered under FedRAMP Moderate, CJIS, IRS Pub. 1075 and HIPAA constraints. US-person staffing and environment controls are specified at SOW signature.

Do you do staff augmentation? +

Only when it's genuinely the right shape — embedded tech leads, architects and platform engineers retained 6–18 months. We decline body-shop asks; our delivery model is squad-based and outcome-anchored.

Adjacent practices

What we'll often pair with Application Development.

Custom software rarely ships alone. Most programs bundle at least one of the below — staffed by the same senior team.

Start a conversation

Tell us what only you need — we'll build it.

Share a brief, a current-state diagram, or just a sketch on a napkin. A senior partner responds within one business day with a calibrated engagement shape.

What you'll get back
  • Calibrated engagement shape + fixed-outcome band
  • Named tech lead on the follow-up — not a BD rep
  • Three comparable references on request
  • NDA, MSA and exit-plan sheet on day one