Building the Front Door: Mobile Transformation at Fortune 1 Scale

When a Fortune 1 retailer set out to launch a subscription-driven mobile platform, failure was not an option. The initiative was a greenfield build, executed under intense time pressure, strict security constraints, and constant uptime demands, all while existing applications continued to support millions of customers and billions in revenue.

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Results at a glance
Mobile doubled. Subscriptions grew. The business never paused.
2x
Mobile channel
contribution
+83%
Mobile app
usage increase
11.5M
Subscription
memberships
$73.2B
Online orders
in 2022
Why Lorien
Builders, not maintainers.Senior engineers selected for netnew feature development.
Precision at scale.~180 engineers mobilized without compromising quality.
Live-environment expertise.Greenfield delivery inside a revenue-generating operation.
Agile pod delivery.Feature-aligned teams that moved at the platform's pace.
Situation

Mobile was no longer a supporting channel. It had become the front door to the brand.

By 2019, the retailer had reached a critical inflection point. Customer expectations were shifting rapidly toward mobile-first, subscription-driven experiences, and leadership recognized that incremental improvements would no longer be enough to compete in an increasingly crowded digital commerce landscape.

The organization launched a bold initiative: a greenfield mobile platform designed to unify multiple consumer applications into a single, scalable experience that could support a new subscription offering and accelerate digital growth. Internally, the program was described as the highest-priority global IT initiative.

It would be built from the ground up while existing applications continued to serve millions of customers and generate billions in revenue. There was no pause button and no margin for disruption. This was not simply a technology upgrade — it was a defining moment for how the organization would compete in a mobile-first future.

Annual revenue (FY 2025)
$681B
A Fortune 1 retailer operating at massive global scale, with 2.1 million employees and millions of customers interacting with the brand daily across digital and physical channels.
Program priority
#1 Global IT Initiative
Internally classified as the highest-priority global IT initiative, demanding execution at enterprise scale with no tolerance for disruption to live operations.
Challenge

Managing risk at enterprise scale. Downtime cost thousands of dollars per minute.

The mobile platform was mission-critical and revenue-generating. The challenge extended far beyond application development — it was about building entirely new capabilities without destabilizing the live applications funding the transformation.

01
Financial & Operational Risk

Downtime was measured in thousands of dollars per minute. Stability and uptime were as essential as speed and innovation — building the future could not come at the expense of the present.

02
Severe Talent Constraints

The program required senior-to-principal mobile engineers capable of designing netnew features at enterprise scale — builders, not maintainers — heavily competed for by technology-first brands.

03
Parallel Execution Pressure

A greenfield platform had to be designed and built while legacy applications continued to serve millions of customers in real time — within a complex, regulated environment governed by strict PII, PCI, and biometric security requirements.

Traditional staffing approaches struggled to deliver the speed, seniority, and precision required without introducing unacceptable risk. The organization did not simply need more people. It needed the right people — embedded quickly, operating confidently under pressure, and capable of delivering when the cost of getting it wrong was measured in minutes.

Engineers. One platform.
~180
Senior mobile engineers contributing to a single mission-critical platform, scaled without compromising quality or introducing unacceptable operational risk.
How Lorien approached the problem

Not a staffing challenge. A precision workforce problem.

Rather than treating the engagement as a volume staffing exercise, Lorien focused on a precise workforce model designed for scale, speed, and resilience. The priority was not filling headcount — it was identifying engineers who could build something new without destabilizing something live.

That meant screening for builders rather than maintainers: engineers with strong computer science fundamentals, experience designing new mobile capabilities, and fluency in enterprise-grade architecture. In parallel, the technical scope and complexity of the work were clearly articulated to the market, helping the organization compete more effectively for elite mobile talent.

Every execution decision — from how teams were structured to how they integrated with existing delivery infrastructure — was shaped by the need to move quickly without introducing unacceptable risk in a live, revenue-generating environment.

Builders, not maintainers. Engineers were selected specifically for their ability to design and build netnew features — not manage legacy systems — with strong computer science fundamentals and enterprise architecture experience.

Agile pod structure aligned to the roadmap. Feature-based teams of approximately eight engineers each were deployed in alignment with platform priorities, enabling focused delivery without coordination overhead.

Speed without sacrificing quality. Upfront technical screening and a streamlined interview process accelerated hiring while maintaining the bar required to operate safely in a high-stakes, regulated environment.

Solution

Purpose-built for enterprise mobile. Where speed, security, and uptime must coexist.

The engagement focused on building senior mobile engineering capacity in a way that balanced speed with control and innovation with stability. Teams were embedded directly into existing delivery structures, operating confidently within strict security and uptime requirements from day one.

01
Senior iOS & Android engineers

Specialists selected specifically for netnew feature development — engineers with the fundamentals and experience to build new mobile capabilities at enterprise scale, not maintain existing ones.

02
Feature-based Agile pods

Teams of approximately eight engineers each, aligned to mobile roadmap priorities — structured to move with speed and autonomy while maintaining coherence across a large, complex platform.

03
Scaled to ~180 engineers

A program scaled to support approximately 180 engineers contributing to a single, mission-critical platform — without compromising vetting standards, security requirements, or delivery quality at any point.

04
Precision screening at pace

Upfront technical screening and a streamlined interview process accelerated hiring without lowering the bar. Speed and quality coexisted — because in this environment, both were required.

Results

Impact at a glance.

Greenfield build and live operations ran simultaneously at enterprise scale. The results reflected what becomes possible when speed, precision, and stability coexist.

20→40%
Mobile channel contribution, doubled over the engagement period
+83%
Mobile app usage increase, contributing to $73.2B in online orders in 2022
11.5M
Subscription memberships, up from 8M at the start of the engagement
ZERO
Disruptions to live operations throughout the greenfield build
A delivery engine
built for sustained
momentum.

Operationally, mobile teams across multiple consumer brands were consolidated into a centralized delivery organization. Roadmap clarity improved, friction between teams decreased, and coordination strengthened across U.S. and international delivery centers. Progress became predictable — allowing the platform to evolve continuously without introducing unacceptable risk.

Greenfield build at Fortune 1 scale. The business never slowed down.

Strategically, the engagement supported the launch and continued evolution of a unified, omni-channel mobile experience. Subscription adoption accelerated, digital engagement deepened, and the organization sustained momentum across one of its highest-stakes growth platforms — all while the business continued to operate at full speed.

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