Open to opportunities

Sanjar S

@sanjars

Senior frontend engineer who builds production React/Vue systems end-to-end—realtime, payments, and native integrations.

Kyrgyzstan

Message

What I'm looking for

I’m looking for a fully-remote team where I can own frontend architecture end-to-end—especially realtime, payments, and native/WebView integrations—shipping business-critical features to production and building reliable engineering standards (including AI-assisted development).

I’m a senior frontend engineer with 5 years of shipping production web applications in React/Next.js and Vue/Nuxt, with systems “live and used daily by thousands.” I lead from ambiguity to production alone—owning architecture, realtime systems, payments, and native integrations end-to-end through Docker/CI to production monitoring.

Most recently, I was Lead/Sole Frontend Owner across multiple production products, including a B2B AI-agent SaaS spanning Telegram, WhatsApp, Instagram, and an embeddable web widget with “150+ paying customers in production.” I led frontend architecture for a 6-person team, owning the core across 66 pages, 430+ components, and 14 stores, and shipped the realtime messaging platform with a live multi-channel inbox and seamless human takeover of AI conversations.

I also built business-critical subscription, loyalty & gifting inside a national mobile banking app—shipped recurring billing across two payment providers, solved 3-D Secure redirect-resume inside a WebView, and rebuilt the loyalty card with SMS-OTP and rotating QR discount codes. Beyond delivery, I set “AI-assisted development standards” across four production repositories—authoring engineering contracts and building guardrailed, purpose-specific agents for implement/review/debug/plan/motion/orchestrate.

Experience

Work history, roles, and key accomplishments

Current

Frontend Developer

Current

Mdigital

Jan 2025 - Present (1 year 6 months)

Lead or sole frontend owner across four production products delivered concurrently, taking business-critical features from ambiguous problems to production. Owns delivery from Docker/CI through production monitoring.

React Next.js Nuxt TypeScript Docker CI CD WebSockets Payments

Frontend Developer

Canterra Studios

Jan 2021 - Jan 2025 (4 years)

Built the frontend architecture for a CRM monitoring surface-mining platform integrating Leaflet with live operational data, and delivered internal HR and education platforms. Led code review and technical planning for a 6-person team.

Sole Frontend Owner

Subscription, Loyalty & Gifting Platform

Sole frontend owner for subscription, loyalty, and gifting features delivered inside a national mobile banking app. Shipped recurring billing end to end, built the gifting flow, and implemented loyalty QR/discount experiences and payment error handling improvements.

Next.js React TypeScript MobX Sentry Subscription Billing QR Discounts

Lead Frontend Engineer

Fusion

Led frontend architecture for a B2B AI sales-agent SaaS across Telegram, WhatsApp, Instagram, and an embeddable web widget used by 150+ paying customers. Built the realtime messaging inbox, WebSocket layer, and an embeddable third-party chat widget.

Next.js React MobX Sentry TypeScript WebSockets Vitest Gitlab CI Docker Optimistic Sends Deduplication File Attachment Test Suites Vite Zustand React Hook Form Zod React 19 Docker Swarm Payments Third Party Integrations

Sole Architect

Workplace Desk-Booking WebView

Built a custom canvas rendering engine for an interactive office floor plan and kept pan/zoom smooth with adaptive rendering quality for low-end phones. Delivered an interactive desk-booking experience inside a WebView.

React 19 TypeScript Vite Tailwind

Sole Developer

Parking Booking App

Took over a stalled parking booking app and consolidated the codebase to resume delivery. Built an interactive SVG parking map with real-time availability and fixed WebView back-button navigation issues.