Senior FE Engineer

Commit

Ukraine · Full-time · Mid-Senior

The company is revolutionizing e-commerce advertising by connecting post-purchase shoppers with relevant cross-sell opportunities. Our platform powers promotional ad experiences that appear immediately after checkout, helping shoppers discover complementary products while helping merchants drive incremental revenue.

We’re a seed-stage company tackling complex, 0→1 ad-tech challenges — from real-time bidding and analytics infrastructure to high-performance frontend experiences that run across millions of checkouts every day.

High impact: Your work directly affects millions of users and drives real revenue.
Complex challenges: Build ad-serving systems, analytics engines, and seamless Shopify integrations.
Collaborative culture: Work closely with technical founders who ship fast and care deeply about engineering craft.
AI-forward: We leverage AI across product, automation, and development — and you’ll be encouraged to as well.

Responsibilities:

Interactive ad units (post-purchase overlays, carousels, scratch cards).
Responsive templates optimized for conversion and performance.
Embedded Shopify widgets, checkout extensions, and admin dashboards.
A/B testable UIs with analytics instrumentation.

Requirements:

Tech Stack:

Frontend: Next.js 15 (React 19), TypeScript, Tailwind CSS
Shopify: Polaris, Hydrogen (Remix), App Bridge
Backend & Infra: Node.js, AWS, Docker - advantage
Testing: Playwright, Jest

Requirements:

5+ years of frontend development experience with React/Next.js and TypeScript.
Strong CSS, animations, and responsive design skills.
Experience with Shopify app development and iframe-based components.
Performance optimization and Core Web Vitals expertise.

Mindset: Pixel-perfect, fast-moving, and data-driven.

Key Skills

Ranked by relevance

responsive design typescript responsive docker react css aws ai

Related Jobs

3 roles aligned with this opportunity

View all jobs

Senior Front-End Developer

2026-05-28

Full-time

Not Applicable

Belgium

Software Development

Engineering

Senior Software Engineer - Mobile

2026-05-20

Full-time

Mid-Senior

Australia

Software Development

Engineering

Senior Software Engineer

2026-05-20

Full-time

Not Applicable

Australia

Software Development

Engineering

Posted: Oct 30, 2025
Type: Full-time
Level: Mid-Senior
Location: Kyiv
Company: Commit

Industries

Software Development