Senior Frontend Engineer ( Billing SWAT Team)

Say hello to opportunities.

If you’re looking to be part of what’s next in communication, you’re in the right place.

At RingCentral, we believe the best customer experiences happen when humans and AI work together. Our agentic voice AI portfolio—AIR, AVA, and ACE—brings together automation, assistance, and insights across the entire conversation lifecycle. The result? More seamless, intelligent experiences for businesses everywhere.

With $2.5B+ in ARR and $250M invested in R&D annually, we’re building the future of AI-powered business communications.

We are looking for a talented Frontend Engineer to join our team. The Billing SWAT team, a division of the Billing department, focuses on projects that deliver specific billing functionality to our customers. Our primary focus is the development of the new product that replaces all existing customer billing related UIs (monorepo-based platform of 10+ micro-frontend applications that can be embedded into any host application at runtime via Webpack Module Federation).

We are also involved in the development of other web services, such as the Admin Portal, used by our support and service engineering teams, and the Personal Account Platform, which allows customers to manage their personal telephony and other company products.

This role requires on-site presence at our office 4 days a week to support effective collaboration and teamwork.

Job responsibilities:

• Effectively communicate and collaborate on requirements with product managers and designers;
• Tasks decomposition and translate them into technical implementation following RingCentral internal coding style and principle (https://github.com/ringcentral/ringcentral-javascript);
• Write unit and integration tests for your code using react-testing-library and jest;
• Perform code reviews for other developers and continuously look for opportunities to improve and optimize code quality.

What we expect from you:

• 5+ years of experience with React and TypeScript in large-scale monorepo projects;
• Experience with Webpack or another module bundler;
• Understanding of Micro Frontend architecture: runtime integration via Module Federation, host/remote patterns, backward compatibility constraints, SDK-based widget embedding;
• Experience with monorepo tooling (Yarn Workspaces, Turborepo);
• Understanding of REST API, client-server interaction model, web application design principles and architecture;
• Understanding of functional programming, object-oriented methodology and design principles;
• Willingness to take ownership and drive tasks to completion with minimal oversight;
• Ability to conduct technical correspondence and work with project documentation in English (Intermediate level);
• Confident Russian proficiency (reading, writing, and speaking) for daily communication and documentation

Nice to have experience with:

• Experience using AI-powered development tools (AI coding assistants, autonomous agents) to accelerate development workflows – from requirements analysis and code generation to testing and code review;
• Node.js, npm packages dependencies development and resolutions;
• GitLab CI/CD
• Understanding of Feature-Sliced Design (FSD) or similar layered frontend architecture
• GraphQL
• Kibana
• Agile/Kanban

What we offer:

• Well-coordinated professional team.
• Cutting edge technologies, interesting and challenging tasks, dynamic project, great opportunities for self-realization, professional and career growth.
• Additional Health and Life Insurance Package.
• Employee Assistance Program.
• 25 vacation days.
• 102,26 EUR/200 BGN Digital Food Vouchers.
• 61, 36 EUR/120 BGN Gross as part of the salary for Working Expenses Allowance.

RingCentral’s work culture is the backbone of our success. And don’t just take our word for it: we are recognized as a Best Place to Work by BuiltIn, the Top Work Culture by Comparably and hold local BPTW awards in every major location. Bottom line: We are committed to hiring and retaining great people because we know you power our success.

About RingCentral

RingCentral is a global leader in agentic voice AI–powered business communications, delivering an integrated platform for business phone, SMS, contact center, workforce engagement management, video collaboration, and messaging. As the communications layer connecting businesses and customers, RingCentral is the front door of business communication and is in the advantageous position to apply AI at every phase of the conversation journey — before, during, and after each interaction. Our agentic AI portfolio includes autonomous voice-first AI agents that automate calls, assist in the moment, and analyze every interaction – enabling businesses to work smarter, respond faster, and connect more meaningfully with their customers. Visit ringcentral.com to learn more.

RingCentral is an equal opportunity employer that truly values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to providing reasonable accommodations for individuals with disabilities during our application and interview process. If you require such accommodations, please click on the following link to learn more about how we can assist you.