CUSTOM WEB DEVELOPMENT.

SaaS platforms, MVPs, B2B portals and e-commerce — built on Laravel and Next.js by senior engineers, and penetration-tested by our own red team before launch. For startups and scale-ups in France and the United States.

► Get a Fixed-Price Estimate Pricing & FAQ
Overview

A web development agency that ships secure software — not just software.

Evosec Consulting builds custom web applications for companies that cannot afford a breach on launch day: fintech, health-tech, B2B SaaS, marketplaces and e-commerce. Our engineering team writes the product; our offensive security team tries to break it before your customers ever see it. Same company, same sprint, one contract.

We work as a nearshore development partner for France (same time zone, French-speaking, RGPD-first) and as a cost-effective senior team for US startups that need to pass a SOC 2 review or an enterprise security questionnaire without hiring a security lead.

48h
Scope & fixed quote
2 wk
Sprint cadence
95+
Lighthouse target
0
Criticals at launch
What We Build
▌ 01

SaaS & MVP Development →

From validated idea to paying customers in 6–12 weeks. Multi-tenant architecture, Stripe billing, role-based access, admin dashboards and the analytics you need for your next round.

SAAS DEVELOPMENT COMPANY · MVP DEVELOPMENT · DÉVELOPPEMENT SAAS
▌ 02

Custom Web Apps & B2B Portals →

Client portals, internal tools, booking systems, logistics dashboards — the software that runs your business, replacing spreadsheets and off-the-shelf tools that never quite fit.

CUSTOM WEB APPLICATION DEVELOPMENT · DÉVELOPPEMENT WEB SUR MESURE
▌ 03

E-commerce Development →

Headless storefronts (Next.js + Shopify/Medusa), custom Laravel shops, B2B ordering platforms. PCI DSS-aware checkout flows, and ASV scans from our own compliance team.

E-COMMERCE DEVELOPMENT AGENCY · CRÉATION SITE E-COMMERCE
▌ 04

APIs & Backend Systems →

REST and GraphQL APIs, third-party integrations (payments, KYC, ERP, CRM), event-driven backends and the mobile backends behind our iOS & Android apps.

API DEVELOPMENT · BACKEND DEVELOPMENT · LARAVEL DEVELOPMENT COMPANY
▌ 05

Legacy Modernisation →

Inherited a PHP 5 monolith or an abandoned Django app? We audit, stabilise, upgrade and refactor — fixing the security findings along the way. Laravel upgrades are a specialty.

LARAVEL UPGRADE · LEGACY MODERNISATION · REFONTE APPLICATION WEB
▌ 06

Websites & Landing Pages →

Fast, accessible marketing sites and landing pages that score 95+ on Lighthouse and are hardened against the defacements and injections that plague WordPress installs.

WEBSITE DEVELOPMENT · CRÉATION SITE INTERNET · AGENCE WEB
Secure by Design

What "pentested before launch" actually means

Every web project follows the same security gates — no exceptions, no upsell:

  • Threat model written during discovery
  • Auth, sessions & permissions reviewed at design time
  • Static analysis (SAST) and dependency audit on every commit
  • Secrets management & hardened CI/CD pipeline
  • Manual OWASP Top 10 penetration test on the release candidate
  • Findings fixed by the developers who wrote the code
  • GDPR / RGPD data-mapping and privacy-by-design review
  • Optional 24/7 detection & response after launch
Stack
backendLaravel 12backendNode.jsfrontendNext.js 15frontendReact · TypeScriptfrontendTailwind CSSdataPostgreSQLdataRedisinfraAWSinfraVercelinfraDocker · GitHub ActionspaymentsStripe
How We Work
01

Scope

Free call → written scope, timeline and fixed quote in 48h.

▌ THREAT MODEL
02

Design

UX flows, data model, architecture decision record.

▌ SECURE DESIGN
03

Build

2-week sprints, weekly demos, staging from day one.

▌ SAST IN CI
04

Pentest

Red team attacks the release candidate; devs fix.

▌ MANUAL TEST
05

Launch

Zero-downtime deploy, monitoring, SLA maintenance.

▌ MONITORING
FAQ
How much does custom web development cost?

An MVP typically costs $15,000–$40,000 (≈ 14k–37k €) and ships in 6–12 weeks. Larger SaaS platforms, marketplaces and B2B portals with complex integrations range from $40,000 to $150,000+. Every project is quoted fixed-price per milestone after a free scoping call — and the price includes the pre-launch penetration test.

Which technologies do you use?

Laravel and Next.js/React with TypeScript are our core stack, on PostgreSQL, deployed to AWS or Vercel with Docker and GitHub Actions. We also work with Node.js, Vue/Nuxt and headless CMS platforms when they fit better.

Do you work with startups in the US and France?

Yes — that is most of our client base. Paris time by default, a daily overlap window for US East Coast teams, English and French, EUR or USD invoicing.

What makes you different from other web agencies?

An in-house offensive security team. Every application goes through threat modelling, static analysis in CI and a manual penetration test before release. One vendor, one contract, software that passes security questionnaires and SOC 2 / GDPR reviews.

Can you take over an existing codebase?

Yes. We start with a code and security audit so you know exactly what you're inheriting, then stabilise, upgrade and extend. Laravel upgrades and PHP modernisation are a specialty.

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