Mid/Senior Frontend Engineer (Remote)

Location: Fully Remote Team: Frontend | Level: Mid/Senior

At over99.com, we’re redefining what’s possible in crypto gaming. Our mission is simple: deliver a lightning-fast, seamless, and visually stunning gaming experience powered by cutting-edge blockchain technologies. We're building the most advanced crypto casino platform in the world—and we’re just getting started.

We’re looking for a Senior Frontend Engineer who excels at building high-performance, interactive web applications. You’ll own the front-end architecture for our gaming experiences, optimize complex rendering pipelines, craft rich real-time interfaces, and push the limits of what’s possible in browser-based gaming.

This is a fully remote role. We value autonomy, trust, and flexibility—and expect you to bring energy, ownership, and leadership wherever you work.

What You’ll Be Doing

• Build and improve high-quality frontend features across the Over99 webapp and games surfaces.
• Work with React, Vue 3, TypeScript, Vite, and modern frontend tooling to deliver fast, reliable user experiences.
• Own frontend implementation for interactive product flows across wallets, balances, gameplay, account features, promotions, and real-time updates.
• Collaborate with engineers on frontend architecture, reusable components, state management, and performance optimization.
• Build and refine real-time client-server features using technologies like Socket.IO, WebSockets, and event-driven updates.
• Contribute to game-facing frontend experiences involving animations, sound, timing, physics, and responsive interaction patterns.
• Partner closely with product managers, designers, backend engineers, and QA to deliver polished end-to-end features.
• Use Cursor IDE, LLMs, and AI-assisted coding workflows heavily as part of day-to-day engineering, including MCP-powered integrations and custom tooling on top of Cursor.
• Use observability practices and tools like Datadog to understand frontend health, debug production issues, and improve user impact.
• Write maintainable, tested code and contribute to code reviews, CI/CD workflows, and team engineering standards.
• Mentor less experienced engineers through thoughtful reviews, pairing, technical guidance, and strong examples of ownership.

Technologies You’ll Work With

Core Infrastructure

• React
• TypeScript
• Vite
• Vue 3
• Tailwind CSS / Sass
• React Query / Vue Query
• Pinia / Vuex
• Socket.IO / WebSockets
• Node.js
• PostgreSQL
• Redis
• RabbitMQ
• Cursor IDE / LLM-assisted development
• MCP integrations

Game / Interactive Frontend

• Matter.js
• GSAP
• Howler
• Animation and rendering performance
• Real-time gameplay UX

Bonus Skills (Nice To Have Experience With)

• Datadog
• AWS
• CI/CD Pipelines
• Docker
• iGaming, crypto, or gaming products

What We’re Looking For

Must-Haves

• 4+ years of professional software engineering experience, with strong frontend engineering depth.
• Proficiency with JavaScript, TypeScript, HTML, CSS, and modern frontend development.
• Strong experience building production web applications with React, Vue, or similar modern frontend frameworks.
• Solid understanding of component architecture, state management, API integration, and responsive UI development.
• Experience building or optimizing high-performance interactive experiences, including animations, real-time updates, and client-server communication.
• Comfort using AI-assisted engineering workflows with Cursor IDE, LLMs, and related developer tools.
• Strong Git, code review, testing, CI/CD, and modern development workflow experience.
• Ability to work independently in a remote-first team while staying communicative, reliable, and ownership-driven.
• Strong product sense, debugging ability, and practical judgment when balancing quality, speed, and maintainability.

Nice-to-Have

• Experience with React Query, Vue Query, Pini