Senior React, Node.js Fullstack

At BetSymphony, we are embarking on an ambitious project to revolutionize the online gambling industry. Our vision is to develop a cutting-edge gambling platform that will serve as the backbone for multiple different brands, each with its unique identity and target audience. This platform will leverage the latest technologies to ensure a seamless, secure, and engaging experience for users across the globe.

As a Fullstack Developer on our team, you will own end-to-end delivery of the BetSymphony Backoffice and frontend applications — a mission-critical internal tool used by operators to manage players, trading, promotions, casino, payments, and reporting in a regulated environment where correctness, performance, and reliability are non-negotiable.

We are a team that embraces AI-assisted development as a standard part of the engineering workflow. We expect our engineers to actively use AI tools to accelerate delivery, improve code quality, and reduce time spent on repetitive work — not as an experiment, but as an everyday practice.

Requirements

Mandatory: 

• 5+ years of total software development experience

• 3+ years of production experience with React, including complex state management (Redux / Redux Toolkit)

• 2+ years of Node.js experience, with hands-on use of Express.js in a production BFF or API layer

• Strong proficiency in TypeScript across both frontend and backend

• Experience with unit and integration testing (Vitest, Jest, or similar)

• Experience working in a microservices architecture, including understanding of BFF layer integration

• Familiarity with Docker and basic Kubernetes workflows

• Proven experience using AI-assisted development tools (e.g., Claude, Cursor, GitHub Copilot, ChatGPT) in daily work (code generation, refactoring, debugging, testing, documentation) — this is a standard expectation, not optional

• Strong English communication skills (B2+)

• Self-organized, proactive, and comfortable working in a distributed team

Desirable: 

• Experience with JIRA, and Confluence.

• Experience with ElasticSearch

• Experience in gambling or online gaming.

• Experience with TDD development processes.

• Strong interest in applying AI-powered tools (e.g. Claude, ChatGPT, Copilot, Cursor or similar) to speed up day-to-day development tasks.

• Proven ability or strong motivation to use AI to reduce development time, improve code quality, and automate repetitive engineering work.

Job Responsibilities

• New features development within the existing product.
• Resolving technical problems as they arise.
• Bug fixing of developed features.
• Actively leverage AI-assisted tools to improve efficiency across coding, testing, debugging, and other SDLC activities
• Writing Unit tests and integration tests.
• Communicating with team members and the Product team.
• Scrum ceremonies participation.
• Mentoring middle and junior colleagues might be required.