Senior Frontend Developer

About the Position

UPSTARS is a product IT company focused on technological solutions and B2B services for international clients, launching stellar projects in the iGaming sector. They are looking for a Senior Frontend Developer to enhance their Frontend department.

Responsibilities10

• Develop and enhance product features in a Vue 3 application with SSR.
• Work on business-critical scenarios: registration, login, profile, cashier.
• Integrate frontend with API and frontend-services, ensuring stable client logic and state operation.
• Support and improve the frontend architecture: Pinia, routing, modules, shared components, SSR/prefetch.
• Optimize interface performance, page load, and heavy user scenarios.
• Analyze and fix bugs and degradations through tools like Sentry, Grafana, Prometheus.
• Participate in code reviews, task decomposition, and technical team growth.
• Collaborate closely with frontend developers, frontend-services, QA, designers, PO.
• Prepare changes for release, control quality and risks in the CI/CD process.
• Ensure stable product operation on a large number of mirrors with different geo-configurations.

Requirements13

• Proficiency in Vue 3, including Composition API.
• Experience with Vue Router.
• Practical experience using Pinia, including working with state during SSR and data prefetching.
• Knowledge of TypeScript.
• Experience implementing SSR/SSG without using Nuxt.
• Building SSR solutions based on Node.js + Express.
• Understanding hydration and principles of client/server logic separation.
• Experience with Vite (build configuration, code splitting, lazy loading, bundle optimization).
• Testing experience: Vitest (unit testing); Playwright or Puppeteer (E2E testing).
• Understanding and using observability tools: Sentry, Prometheus, Grafana.
• Experience with CI/CD: GitLab CI, GitHub Actions, Docker, Helm, ArgoCD.
• Working with localizations (including vue-i18n).
• Understanding proxy and building an API layer on Express.

Benefits8

• Teamwork – we not only work together but also rest, engage, and do good deeds together.
• Positivity – we navigate life easily and derive excitement from well-done work, interesting tasks, and team feedback.
• Opportunities – we offer a clear career plan with Performance Review, training, mentoring programs, and other tools for realization.
• Bravery – we tackle star tasks, unafraid of challenges and ambitious plans.
• Openness – we speak plainly about complex matters, listen to ideas and feedback, and value proactivity.
• We have our own capacities for creating technological solutions from scratch.
• We automate routine tasks to use time for personal development and professional growth within the company.
• We dislike bureaucracy and outdated approaches – we value freedom of action.