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alexis_amzFR / EN
◆  DEV_WEBSTACK: NEXT.JS · TS · SUPABASESTATUS: OPEN_TO_WORK

Web
work.

Custom websites for businesses and agencies. From fully custom (Next.js, React) to WordPress and other CMS : depending on your needs, budget, and management style. Clean code, a single point of contact from brief to launch. Everything is possible.

latencyx · cockpitENGINE: RUNNING
LATENCYX
High-frequency trading bot · Polymarket
ENGINE: RUNNING
LATENCY < 5 msUPTIME 99.9%CORE RUST
Powered byPolymarketChainlink
< 5 ms
Execution latency
5m·15m·1h
Crypto markets
Rust
Engine core
24/7
Automated
// TECH STACK
Rust · TokioWebSocketChainlink StreamsPolymarket CLOBPolygon · SafeEIP-712Telegram + WebVPS · systemd
[ 01 ] // PROJECT · 2026

LatencyX · Trading bot · Polymarket

A real-time trading cockpit, built for speed.

Automated trading bot on Polymarket Up/Down crypto markets (5min, 15min, 1h), written in Rust for performance. Live WebSocket market feeds, operator dashboard and safety safeguards. The most technical project in the portfolio.

  • Real-time WebSocket feeds. Oracle (Chainlink Data Streams) and live orderbook, no polling: every millisecond counts.
  • Operator dashboard + Telegram. Engine supervision, positions and P&L, control (pause / resume / emergency stop) and live alerts.
  • Built-in safeties. Circuit breakers (consecutive losses, drawdown, daily limit) and fail-closed logic if a source goes down.
  • Rust core. Pre-computed EIP-712 signatures, optimized critical paths, latency under the 5 ms mark.
belkacoiff.fr/reservationLIVE · SHOP 4.9/5 · 82 REVIEWSLIVE
Screenshot of belkacoiff.fr in production
24/7
Online booking
4.9/5
Shop Google rating
82
Shop Google reviews
PWA
Installable on iPhone
// TECH STACK
Next.js 16React 19TypeScriptTailwind 4SupabaseResendTwilio SMSweb-push iOS@react-pdfSentryVercelJWT + Turnstile
[ 02 ] // CASE STUDY · MAY 2026

Belka'Coiff · Barbershop · Lyon

A barbershop that handled bookings by phone · now bookable online 24/7.

Local barbershop open since 2019. Complete redesign: online booking, staff dashboard, POS and accounting · built for a non-technical owner to use daily after a short onboarding.

  • 24/7 booking. Pick the barber, the service and the time slot in a few clicks.
  • Twilio SMS. Instant confirmation + reminder 1h before, to cut down on forgotten appointments.
  • Staff dashboard. Everyone manages their schedule, availability and days off. The owner sees everything.
  • POS + auto accounting. Checkout with PDF receipt, monthly export for the accountant.
  • iOS push notifications. Via an installable PWA. New booking = vibration on the barber's iPhone.

// DELIVERABLES Source code delivered to the client · Onboarding training · Free-tier hosting (~€5/month of SMS)

dczimports.frSAAS · 2026
DCZ Imports: importing cars from Europe to France, real-cost simulation (CO₂ penalty, VAT, transport, registration)
Stripe
Built-in billing
Cost
Real landed cost in France
Tracking
Paperwork & tax clearance
SaaS
Next.js 16 + Supabase
// TECH STACK
Next.js 16React 19TypeScriptTailwind 4SupabasePostgreSQLStripeVercel
[ 03 ] // PROJECT · 2026

DCZ Imports · Automotive SaaS

End-to-end tracking and profitability for car imports, à la carte.

A complete SaaS for professionals and individuals: real-time calculation of the landed cost in France (VAT, CO₂ penalty, transport, registration), full tracking of the registration paperwork, and profit and margin management for each imported vehicle.

  • Profitability simulator. Automatically adds the CO₂ penalty, allowances and transport costs to reveal the net margin.
  • Paperwork co-pilot. Dynamic checklist: tax clearance certificate (quitus fiscal), COC (certificate of conformity), temporary registration and ANTS file.
  • Fleet management (Pro). Dashboard for professionals with an overview of vehicles being imported, their profitability and status.
  • Solid stack. Next.js 16 with Supabase (PostgreSQL, Auth, Edge Functions) and billing through Stripe.
streampulse.frv2.0 · 4.8/5
StreamPulse: live alerts, auto channel points and Drops on Twitch and Kick
3
Twitch · Kick · DLive
4.8/5
Average rating
€0
Free · no ads
v2.0
Chrome extension
// TECH STACK
JavaScriptExtension ChromeTwitch APIKick APIDLive APIChrome · EdgeBrave · OperaManifest v3
[ 04 ] // PROJECT · 2025 · 2026

StreamPulse · Browser extension

The viewers' tool · automated live & points.

Multi-platform browser extension: instant live notifications, automatic channel points collection, optimized latency and a unified dashboard. Free, no ads, no tracking, no account.

  • Instant live alerts. Notified as soon as a followed streamer goes live, on Twitch and Kick.
  • Auto Drops & Points. Automatic collection of channel points, Twitch Drops and Moments.
  • Predictions overlay. Floating, draggable widget on the video player to vote without opening the chat.
  • "Le Tatoo" landing. New 2026 identity: a 90s pager, flat purple panels, dot-matrix LCD screen · rolled out in 15 languages.
  • Favicon & Anti-Pause. Streamer avatar as the tab icon and continuous background playback.
chrome web store · MinosPOWERED BY STREAMPULSE
Minos: Twitch and YouTube notifications extension, powered by StreamPulse
3
Features
6
Socials linked
€0
Free · for his viewers
v26
Chrome extension
// TECH STACK
JavaScriptExtension ChromeManifest v3Twitch APIKick APIYouTube APIService Workeri18n FR · EN
[ 05 ] // PROJECT · 2026 · CLIENT

Minos · Custom extension

A streamer's official extension, branded to his image.

Custom version of StreamPulse, dedicated to the streamer Minos (MinosTV) and his community. Instant notifications of his Twitch & Kick lives, new YouTube videos and clips · all under his branding, his socials and his sounds.

  • Live & video alerts. Notified as soon as Minos goes live (Twitch, Kick) or publishes a YouTube video or clip.
  • Full branding. His photo, colors, 6 socials (YouTube, Insta, Kick, X, Discord, TikTok) and custom notification sounds.
  • Live · Videos · Clips tabs. All his content gathered in a single popup, one click away.
  • StreamPulse engine. White-label product: the same tech, already rolled out for 8 streamers · adaptable to any creator.
Next project · yours?
// restaurant · garage · agency · custom tool, delivered in 2 to 3 weeks
Let's talk
[ ESTIMATION ] // SIMULATEUR INTERACTIF

Estimate your Next.js project
transparent rates, zero surprises.

// 2. Number of pages3 pages
// 3. Key features
// Estimated Investment Range
1,190 à 2,010 €
Estimated timeframe: 2 à 3 weeks
Includes production code, responsive testing, Core Web Vitals optimization, and 100% intellectual property. Zero hidden recurring fees.
Get detailed quote under 24h
// Free, direct response under 24h
[ 06 ] // DEV PRICING

Every project,
its own quote.

CUSTOM

Development

// Website · app · extension · bot
Custom quotedepending on project

Showcase site, e-commerce, browser extension, app, bot... The price depends on the scope, features, integrations and deadlines. Let's talk, I'll make you a detailed and transparent quote within 24h · no strings attached.

  • Clear quote, line by line
  • Custom (Next.js, React) or WordPress / CMS
  • Design, development, launch
  • A single point of contact, from brief to delivery
  • No hidden subscription, the code is yours

Monthly Management

// Optional · maintenance & support
Optionalif you want

If you prefer not to touch anything: hosting, updates, backups and support. Light monthly plan, cancellable at any time · or I leave you 100% autonomous, your choice.

  • Hosting & domain managed
  • Automatic security updates
  • Regular backups
  • Support within 24h on business days
  • Minor edits included