Senior Front-End Engineer

On behalf of our Client from the  USA, Mobilunity is looking for a Senior Front-End Engineer.

This company specializes in developing innovative digital solutions for businesses, focusing on modular e-commerce, web performance optimization, and AI-driven retail technologies. They create flexible, API-first architectures that enhance scalability and user experience. Their expertise includes AI-powered recommendations, conversational commerce, and tailored digital experiences across various industries. With a customer-centric approach, they integrate artificial intelligence to drive efficiency and growth.

Applications:

• Customer profile management platform for retail associates
• Customer account portal with order management 
• Payment processing application with multiple payment provider integrations

Tech Stack:

• React with TypeScript
• Next.js (App Router, Server Components)
• Node.js
• REST APIs and middleware integrations
• Modern deployment platforms (Vercel, AWS)
• CDN and caching strategies
• Analytics and tag management tools

Responsibilities:

• Develop features for customer-facing and internal retail applications, including bug fixes, performance improvements, and new functionality
• Collaborate with cross-functional teams (Product Managers, Architects, QA) to implement front-end solutions aligned with business goals
• Write clean, reusable code with a focus on performance, testing, and maintainability
• Optimize applications for speed, scalability, and Core Web Vitals (LCP, FID, CLS)
• Integrate with backend services and third-party APIs
• Work on payment provider integrations and checkout flows
• Troubleshoot and resolve technical issues in collaboration with support teams
• Maintain project documentation and track progress using Jira/Confluence

Requirements:

• 5+ years of front-end development experience
• Expertise in React, Next.js, and modern JavaScript/TypeScript
• Proficiency in REST API integration and performance optimization
• Strong knowledge of CSS and responsive/mobile-first design
• Experience with server-side rendering and static site generation
• Familiarity with CI/CD pipelines, cloud platforms, and testing frameworks
• Solid understanding of e-commerce concepts
• Strong communication skills in English (written and verbal)

Requirements:

• Experience with enterprise ERP or commerce platform integrations
• Knowledge of middleware and API orchestration platforms
• Experience with payment gateway integrations
• Familiarity with CRM system integrations
• Exposure to headless CMS or composable commerce architectures

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Paid sick leaves, including 5 paid days per year that don’t require a sick note
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!