Custom software studio

Custom software, shipped like a product.

Leadershift designs and builds the web, mobile and AI tools your team needs — no generic integrator, no hidden tech debt.

60+
projects shipped
20+
long-term clients
99.9%
average uptime
72
client NPS
What we build

Products built to last

From POC to scale, we own the design, the code and the production rollout.

Web applications

SaaS, client portals, internal back-offices. Next.js, TypeScript, modern databases, in-house design systems.

Mobile applications

iOS and Android with React Native or Expo. One codebase, two stores, a real native experience.

AI integration

LLMs, RAG, autonomous agents, automation. We bring AI where it actually adds value.

APIs & integrations

REST/GraphQL, ERP/CRM connectors, webhooks, queues — the infrastructure that talks to your whole stack.

Cloud & DevOps

Infrastructure as code, CI/CD, observability, security. Predictable, automated deployments.

Product design

User research, wireframes, design systems. No pretty screen without purpose, no useful feature left ugly.

Audit & rebuild

Technical audit, remediation plan, incremental rebuild without breaking production. Escaping legacy takes a plan.

How we work

Framed. Transparent. Shipped.

A four-step process that removes the unpleasant surprises.

  1. 01

    Discover

    We clarify the need, the expected ROI, the technical constraints and a realistic timeline.

  2. 02

    Design

    Architecture, mockups, interactive prototypes — validated by your real users.

  3. 03

    Build

    Two-week sprints, regular demos, systematic code review.

  4. 04

    Ship

    Deploy, monitor, transfer ownership or run dedicated maintenance.

Selected work

A few recent projects

Internal platforms, SaaS products, AI integrations — always shaped around your business.

Public procurement
Next.jsPostgreSQLSaaS

Marchés PME

Platform that helps French SMEs tap into public tenders: monitoring, targeted alerts and bid-response support.

Marchés PME
LLMRAGNext.js

AI Pricing

AI assistant that prices tender responses directly from RFP documents — itemised quotes generated in minutes.

B2B logistics
Next.jsPostgreSQLMapbox

Atlas Platform

Full rebuild of a route-planning tool: 42% less time spent on dispatch.

Law firm
RAGGPT-4Pinecone

Lumen Assistant

AI assistant that summarises 12,000 archived cases. Sourced answers in under 3s.

A project that deserves better than a template?

Let's talk. First call is free, no strings attached, to assess feasibility.