Senior FS Engineer

Reposted 22 Days Ago
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Hiring Remotely in Poland
Remote
Senior level
Information Technology • Software
The Role
The Senior FS Engineer will build interactive ad units, optimize responsive templates, and leverage AI across product development while collaborating in a fast-paced environment.
Summary Generated by Built In

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.

Tech Stack:

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

Top Skills

App Bridge
AWS
Docker
Hydrogen
Jest
Next.Js
Node.js
Playwright
Polaris
React
Tailwind Css
Typescript
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The Company
HQ: Petah Tikva
399 Employees
Year Founded: 2005

What We Do

Commit is a global tech services company with offices in Israel, US, Canada, UK, and Europe.

The company was founded in 2005 and has over 700 multi-disciplinary innovation experts who serve a broad range of companies, from small startups to large enterprises in multiple business sectors.
Commit specializes in advanced technologies and applications with dedicated practices in Cloud, GenAI, Software, IoT, Big Data, Cyber, Collaboration, Data center migration projects, and more.

Commit offers innovative, end-to-end technology solutions by developing custom software and IoT platforms for clients looking to build their next-gen products within the modern ICT world.

Commit’s complete and comprehensive engineering powerhouse of resources, and proprietary Flexible R&D methodology helps transform its clients’ technology visions into high-quality products while reducing costs and improving time-to-market.

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