Marketing & growth web
Landing pages, onboarding journeys, and paywall experiences built for conversion and clarity. (bettersleep.com)
Nicolas Desjardins | Senior Web/backend developper
Nicolas Desjardins
Senior Web/backend developper
Web platforms by day. Algorithms by night.
Mostly TypeScript across the stack — Next.js on the front, Node on the back, and whatever databases, infrastructure, and oddball tooling the project asks for.
Now
Updated May 2026- Building an AI-powered onboarding and paywall editor at BetterSleep — drafts new experiment ideas and iterates on older ones using outcome data.
- Building an internal A/B experiment tool so the product team can launch tests inside the sleep app and pull insights faster.
- Opening up B2B integrations for partners with 40k+ employees.
- Migrating the backend onto Drizzle Kit for a leaner, more scalable query layer.
What I build
Backend platforms
Subscriptions servers, mobile-app APIs, and partner integrations — designed to stay readable as they grow across millions of users.
AI-powered internal tools
Editors and assistants that help product teams generate, run, and iterate on experiments using outcome data.
Side experiments
Algorithm puzzles and small projects that have no business reason to exist — like a wood-cut optimizer that keeps waste under 3%.
Skills
Grouped by how I use them. Five dots is a daily driver.
Languages
TypeScript
Primary language across front and back.
JavaScript
Years of muscle memory; still my second-nature read.
Node.js
Runtimes, APIs, scripts, glue code.
C#
Service work and integration scripts in past roles.
Frameworks & UI
Next.js
App Router, RSC, performance-tuned product and marketing sites.
React
Hooks-first, server components, careful about state shape.
Vue.js
Dashboards and component-driven UI systems.
Angular
Enterprise app architecture and module boundaries.
HTML + SCSS
Accessible markup and expressive styling with strong semantics.
Data & infra
Prisma
Type-safe data modeling and migrations.
Drizzle
Lean query layers; favoring it for new projects.
MySQL
Schema design and query tuning for growth-stage apps.
Firebase
Auth, Firestore, and quick-deploy serverless.
Cloud Run Functions
Low-ops compute for event-driven services.
GCP
Production deploys and basic observability.
Product tooling
Stripe
Checkout, subscriptions, webhook handling.
Mixpanel
Event taxonomies and funnels.
Google Tag Manager
Tag governance and rollout consistency.
Sanity
Structured content models and editorial flows.
Meta Pixel
Campaign tracking with privacy-aware rules.
Experience
Oct 2020 - Present
Senior Web/backend developper
BetterSleep · Montreal, QC
- Own bettersleep.com — landing pages and marketing experiences built in Next.js.
- Maintain the subscriptions server that unifies Stripe, iOS, and Android payment events and replays user flows into Mixpanel, Iterable, and Appsflyer.
- Support the server API behind the BetterSleep mobile apps.
Apr 2019 - Sep 2020
Web Developer
Openmind · Blainville, QC
- Built various client web applications end to end, scoped to each project's needs.
- Gathered requirements and drafted roadmaps and timelines directly with clients.
- Acted as a semi product owner — kept priorities legible between client, design, and engineering.
Fall 2018
Full-Stack Developer (internship)
Dreamsoft · Montreal, QC
- Built a pharmacy tool for patient profiles and appointment booking.
- Stack: Node.js and React with Google Cloud as the data layer.
Summer 2017
C# Application Developer (internship)
Synergx · Laval, QC
- Wrote a C# desktop app analyzing 3D images from a glass inspection machine.
- Detected production defects like blur and double-image in real samples.
Summer 2016
Full-Stack Developer (internship)
Tecsys · Montreal, QC
- Worked on an internal Docker-based container deployment tool.
- Built the web interface and the surrounding deployment workflow.
2015 - 2019
Bachelor of Software Engineering
École de technologie supérieure (ÉTS) · Montreal, QC
- Final-year project focused on artificial intelligence.
- PSPO Scrum Level 1 certified.
Projects
Onboarding Editor (BetterSleep)
AI-powered editor for building onboarding and paywall flows at BetterSleep. Drafts new experiment ideas and iterates on older ones using outcome data.
The interesting part: making the AI's suggestions actually grounded in real outcome data, not just plausible-sounding noise.
Wood Cut Sequence Optimizer
An optimizer that plans the best cutting sequence for a batch of wood orders, keeping material waste under 3%.
Built for a friend running a woodworking shop. Classic constraint problem — minimize offcuts across a batch of cuts. Lands under 3% loss consistently.
Outside of code
HobbiesTraining, Golf, Tennis, Music.LanguagesFrench, English, German (occasionally).
Want to make something?
Send me a note. Always up to talk about web platforms, backends, side projects, or a thing you're stuck on.