Web Technology Solutions for Companies

Building a web application is easy to start and hard to get right over time. Choices made in the first weeks (architecture, data model, tooling, testing, deployment) decide how fast your team can move a year later. We help companies make those choices, review what already exists, reinforce their teams and keep their applications running. Our work is based on a modern and lightweight web stack built around TypeScript, Node.js and Angular.

Web architecture consulting

Every project has its own constraints: team size, budget, deadlines, traffic, data and regulations. Our consulting missions start from these constraints, not from a trendy framework, and end with decisions your team can apply.

• Architecture design for new web applications: how to split the frontend, the API and the background jobs, where the data lives, how the modules talk to each other and how the application will grow without a rewrite.
• Technology choices explained and documented: which framework, database, hosting and tools fit your project, what they cost to maintain, and what the alternatives are. Each decision is written down so it can be reviewed later.
• Modernization of legacy applications: migration of JavaScript codebases to TypeScript, upgrade of old Angular or Node.js versions, replacement of unmaintained dependencies and a step-by-step plan that keeps the product online during the transition.
• Performance and scalability: profiling of slow pages and API endpoints, caching strategies, heavy computations moved to Web Workers or worker threads, and database queries optimized before adding more servers.
• AI features in web products: integration of large language models with the Vercel AI SDK, streaming responses in the interface, tool calling, cost control and fallback strategies when the model is slow or unavailable.

Code and architecture reviews

An outside review is the fastest way to know where a codebase really stands. We read the code, run it, measure it and deliver a clear report with priorities, not a list of a hundred minor remarks.

• Code review of a repository or of a critical part of it: readability, typing, error handling, duplication, dead code and the patterns that will slow the team down as the codebase grows.
• Architecture review: module boundaries, dependencies between layers, data flows, API design and coupling between the frontend and the backend.
• Security review: authentication and authorization, input validation, secrets management, dependency vulnerabilities and the most common web risks listed by the OWASP Top 10.
• Testing and quality review: test coverage where it matters, flaky tests, missing integration tests and a realistic plan to reach a reliable test suite with Vitest.
• Delivery review: build times, continuous integration with GitHub Actions, Docker images, environments, deployment and rollback procedures.
• Due diligence before an acquisition, a fundraising or the handover of a project from an agency or a freelancer: an independent opinion on the technical debt and the real cost of the next steps.

Staff augmentation

When your roadmap is ahead of your hiring plan, we join your team as senior web developers or technical leads. We work in your repositories, with your tools and your rituals, and we leave the code better documented than we found it.

• Senior TypeScript developers for Node.js backends, Express APIs, Angular frontends and full-stack features.
• Technical lead or interim architect to structure a new team, set the coding standards, review pull requests and unblock the developers.
• Short missions to deliver a specific feature, a migration or a proof of concept on a fixed scope and schedule.
• Knowledge transfer built into every mission: documentation, pair programming and code reviews so that your team keeps full ownership of the code when we leave.

Team training

Training is more effective when it is based on your own code and your own problems. Our workshops are hands-on, adapted to the level of each team and can be given remotely or on site, in English or in French.

• TypeScript from the basics to advanced typing: generics, type narrowing, strict mode and how to type a real codebase without fighting the compiler.
• Node.js and Express: API design, the event loop, streams, error handling, configuration, logging and production best practices.
• Angular: components, signals, dependency injection, routing, forms, state management and performance of large applications.
• Data access with Prisma and SQLite: schema design, migrations, relations, transactions and when a lightweight embedded database is the right choice.
• Testing with Vitest: unit tests, integration tests, mocks, test organization and how to write tests that stay useful over time.
• Docker and GitHub Actions: containerizing an application, writing efficient images and building a CI/CD pipeline that tests and deploys on every change.
• AI-powered features with the Vercel AI SDK: prompts, streaming, structured outputs, tool calling and the limits to keep in mind before going to production.

Technical support and maintenance

A web application needs care long after its launch. We provide ongoing technical support to keep your applications secure, up to date and available.

• Corrective maintenance: diagnosis and fix of bugs in production, with a written explanation of the cause and of how to prevent it.
• Preventive maintenance: regular updates of Node.js, Angular and dependencies, security patches and removal of deprecated APIs before they break.
• Monitoring and incident response: logs, alerts and health checks to detect problems early, and a clear process when something goes wrong.
• Continuous improvement: small, regular improvements of performance, accessibility and developer experience instead of a big rewrite every few years.
• Second-level support for your team: a senior developer available to answer technical questions, review a risky change or help on a difficult bug.

Our web technology stack

We favor proven, well-documented and lightweight tools. A small and coherent stack is easier to learn, to hire for and to maintain. These are the technologies we use every day and recommend to our clients.

• TypeScript for the whole codebase, frontend and backend, so that the same types describe the data from the database to the user interface.
• Node.js as the server runtime, fast to develop with and supported by the largest package ecosystem.
• Express for simple, explicit and battle-tested HTTP APIs.
• Prisma as a type-safe ORM, with a readable schema and reliable migrations.
• SQLite as a fast, embedded and zero-maintenance database that covers the needs of many applications far longer than expected.
• Angular for structured, long-lived frontends and large business applications.
• Lightweight Charts for high-performance financial and time series charts in the browser.
• Vitest for fast unit and integration tests with a modern developer experience.
• Docker to run the same application in development, testing and production.
• GitHub Actions to automate tests, builds and deployments on every change.
• Vercel AI SDK to add AI features such as chat, text generation and tool calling with any large language model provider.
• Web Workers to move heavy computations off the main thread and keep the interface smooth.

How we work

Every mission starts with a discussion to understand your context, your team and your goals. We then propose a clear scope, a schedule and a deliverable: an architecture document, a review report, a training program, a number of days of development or a support plan. We work transparently, with regular updates, and we write everything down so that the knowledge stays in your company.