Staff Engineer

Say hello to opportunities.

It's not every day that you consider starting a new career. We're RingCentral, and we're happy that someone as talented as you is considering this role. First, a little about us, we're a $2 Billion annual revenue company with double digit Annual Recurring Revenue (ARR) and a $93 Billion market opportunity in UCaaS, Contact Center and AI-powered adjacencies. We invest more than $250 million annually to ensure our AI-enabled technology and platforms meet or exceed the needs of our customers.

RingSense AI is our proprietary AI solution. It's designed to fit the business needs of our customers, orchestrated to be accurate and precise, and built on the same open platform principles we apply to our core software solutions.

This is where you and your skills come in. We're currently looking for a Staff Engineer with broad and deep software engineering experience, specializing in modernization of legacy application stacks into scalable, modular, cloud-native architectures. This role focuses on transforming monolithic systems (e.g., traditional .NET backend + tightly coupled frontend) into well-structured microservices ecosystems. A defining characteristic of this role is mastery of Spec-Driven Development (SDD)-using clear, versioned, testable specifications to align engineering execution with business requirements, reduce ambiguity, and enable predictable, scalable delivery. This individual operates at both architectural and implementation levels: defining modernization strategy, decomposing systems, guiding teams through transformation, and contributing directly to critical components.

Job Duties:

• Lead migration from legacy monolithic architectures to distributed microservices.

• Define domain boundaries using DDD principles.

• Establish API-first design and contract-driven service communication.

• Drive decoupling of backend and frontend systems.

• Lead database modernization strategies (schema refactoring, service-level data ownership, performance tuning).

Example:
Break apart a legacy .NET monolith backed by Microsoft SQL Server into independently deployable services for identity, billing, CRM integration, catalog, and reporting-while maintaining operational continuity and minimizing business disruption.

• Establish and champion Spec-Driven Development across teams.

• Create executable specifications that define APIs, workflows, data contracts, and system behaviors before implementation begins.

• Use specifications as the single source of truth for engineering, QA, product, and DevOps.

• Drive alignment between technical design, acceptance criteria, and deployment pipelines.

• Ensure traceability from business requirements to production code.

Example:
Before decomposing a monolithic order workflow, produce a formal service contract specification defining event flows, payload schemas, error states, and SLAs-enabling parallel team execution without integration chaos.

• Identify opportunities to incorporate AI-driven automation, predictive systems, and intelligent decision engines into modernized architectures.

• Integrate AI capabilities into modular services without tightly coupling them to core infrastructure.

• Design systems that allow AI components to evolve independently from transactional systems.

• Contribute to backend, frontend, and integration layers.

• Review and understand codebases across multiple languages and frameworks.

• Provide architectural guidance for refactoring legacy code.

Technical breadth includes:

Backend

• .NET / .NET Core

• Java, Node.js

• Ruby

• REST and event-driven architectures

Frontend

• React

• Angular

• VueJS

• TypeScript / JavaScript

• Modern SPA architectures

Databases

• Microsoft SQL Server

• Oracle

• Postgres

• MySQL

• MongoDB

• Elasticsearch

Mobile

• Experience supporting or architecting mobile applications (iOS/Android integrations, backend-for-frontend patterns, mobile API performance optimization).

• Architect integrations with CRM systems and enterprise platforms.

• Design secure API integrations and identity flows.

• Ensure reliable data synchronization between transactional systems and CRM platforms.

• Modernize legacy CRM-adjacent workflows into scalable service-based designs.

• Lead migration to cloud-native infrastructure (GCP, AWS).

• Architect Kubernetes-based containerized environments.

• Implement CI/CD pipelines aligned with Spec-Driven Development.

• Introduce Infrastructure as Code (Terraform or equivalent).

• Improve deployment velocity from manual release cycles to automated pipelines.

• Strengthen security via IAM, SSO, and service-level access control.

• Design highly available systems with observability, monitoring, and alerting.

• Improve performance and scalability under high transaction loads.

• Architect messaging and streaming solutions (e.g., Kafka-style event systems).

• Ensure system resiliency during phased migration from monolith to microservices.

Desired Qualifications:

• 15+ years of software engineering experience.

• Demonstrated success modernizing large-scale monolithic applications.

• Proven leadership in microservices and distributed systems architecture.

• Strong understanding of database enabled applications.

• Deep experience implementing Spec-Driven Development methodologies.

• Broad code fluency across React, Ruby, .NET, Java, Go, and modern web stacks.

• Experience supporting mobile application ecosystems.

• Experience integrating CRM and enterprise systems.

• Strong foundation in algorithms, system design, and scalable architecture.

• Track record of mentoring engineers and influencing architectural direction across teams.

This Staff Engineer will:

• Transform legacy systems into scalable, modular architectures.

• Introduce engineering rigor through Spec-Driven Development.

• Enable predictable delivery and cross-team alignment.

• Increase system performance, scalability, and reliability.

• Strengthen enterprise integration and CRM workflows.

• Elevate technical standards across backend, frontend, mobile, and cloud environments.

What we offer:

• Comprehensive medical, dental, vision, disability, life insurance

• Health Savings Account (HSA), Flexible Spending Account (FSAs) and Commuter benefits

• Voluntary supplemental health coverage and life insurance

• 401K match and ESPP

• Paid time off and paid sick leave

• Paid parental and pregnancy leave

• Family-forming benefits (IVF, Preservation, Adoption etc.)

• Emergency backup care (Child/Adult/Pets)

• Employee Assistance Program (EAP) with counseling sessions available 24/7

• Free legal services that provide legal advice, document creation and estate planning

• Employee bonus referral program

• Student loan refinancing assistance

• Employee 1:1 coaching, perks and discounts program

RingCentral's Engineering team works on high-complexity projects that set the standard for performance and reliability at massive scale. What kind of scale? Millions of users today and hundreds of millions tomorrow. This is your chance to help imagine, develop and deliver products that raise the technological bar, and power human connections. If you're a talented, ambitious, creative thinker, RingCentral is the perfect environment to join a world class team and bring your ideas to life.

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 Glassdoor, 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, Inc. (NYSE: RNG) is a leading provider of business cloud communications and contact center solutions based on its powerful Message Video Phone(MVP) global platform. More flexible and cost effective than legacy on-premises PBX and video conferencing systems that it replaces, RingCentral empowers modern mobile and distributed workforces to communicate, collaborate, and connect via any mode, any device, and any location. RingCentral is headquartered in Belmont, California, and has offices around the world.

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.

If you are hired in Colorado, California, Hawaii, Nevada, New York, Maryland, Washington, Connecticut, Rhode Island, the compensation range for this position is between $176,750 and $252,500 for full-time employees, in addition to eligibility for variable pay, equity, and benefits. Benefits may include, but are not limited to, health and wellness, 401k, ESPP, vacation, parental leave, and more! The salary may vary depending on your location, skills, and experience.