Full-stack Software Engineer ShopBuilder at Xsolla (USA), Inc. – Perm | Jobyssey

You will build and evolve high-performance web applications with React and Node.js. You will translate requirements into user experiences, own features from refinement through delivery, optimize performance, ensure compatibility and accessibility, improve testing and CI/CD, support incident response, and communicate technical risks and trade-offs.

Responsibilities

Build and evolve scalable web applications using React and Node.js
Translate complex requirements into intuitive user experiences
Participate in code reviews and share best practices
Improve CI/CD reliability and observability
Own features from requirement refinement through testing and delivery
Optimize loading times, rendering speed, and bundle efficiency
Ensure cross-browser and multi-device compatibility
Meet accessibility and usability standards
Modernize and refactor platform components
Maintain engineering standards across coding, documentation, testing, and reviews
Improve automated test coverage and CI/CD workflows
Handle incident response and root-cause analysis
Improve long-term platform reliability
Advocate for scalability, performance, security, and observability
Identify technical risks and estimate complexity
Communicate trade-offs to leadership and stakeholders

Requirements

4+ years of software development experience with modern frontend engineering expertise
Deep hands-on React knowledge including component architecture, SSR, RSC, and complex UI data flows
Proficiency with Node.js and MongoDB
Understanding of styling systems and theming approaches such as vanilla-extract, styled-components, and design tokens
Strong TypeScript practices including strict typing, shared contracts, and schema validation
Experience with Module Federation
Understanding of bundling and compilation with webpack, Rollup, Vite, or esbuild
Experience with Vitest or Jest and end-to-end testing with Playwright or Cypress
Understanding of REST, GraphQL, and RPC-style APIs
Experience with CI/CD workflows such as GitLab CI
Experience with private registries and secure artifact handling
Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field
Experience building shared frontend platforms or tooling is a plus
React Native or mobile experience is a plus
Knowledge of client-side and server-side rendering performance optimization is a plus
Understanding of accessibility, internationalization, and semantic UI design is a plus
Experience developing SDKs, CLI tools, or developer-facing automation is a plus
Familiarity with event-driven interfaces, real-time interfaces, or edge rendering is a plus
Background in developer platforms, observability, or performance monitoring is a plus
Comfort with UI-as-data approaches and AI-assisted or no-code tooling is a plus

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Responsibilities

Requirements