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CreatorIQ is seeking a Senior Software Engineer to join the Messaging team and build next-generation creator communication capabilities. This is a full-stack role with strong backend focus, working across both legacy platform and new microservices.
You will modernize CreatorIQ's messaging architecture, currently built on a large PHP-based monolith, by incrementally migrating functionality into independently deployable microservices using Node.js and TypeScript. Key responsibilities include:
- Design and develop scalable backend services supporting email and messaging capabilities
- Understand, troubleshoot, and safely modify existing PHP implementation while designing new architecture
- Analyze legacy code, dependencies, and data flows to define service boundaries, APIs, and safe migration strategies
- Design APIs and agent-facing interfaces for AI agents, including structured schemas, permissions, validation, idempotency, and error handling
- Build agents and expose them as services using A2A protocol or similar patterns
- Contribute to agent integration patterns including REST/GraphQL APIs, tool definitions, and MCP-based interfaces with appropriate security and observability
- Build secure integrations with Google Workspace, Microsoft 365, and other external communication providers
- Develop capabilities for customer-managed inboxes, domains, sender identities, and campaign-specific messaging automation
- Design APIs, background jobs, queues, and event-driven workflows with reliable retry handling, rate limits, idempotency, and provider failure management
- Improve email authentication, deliverability, bounce/complaint processing, suppression management, and sender reputation
- Contribute to React and TypeScript user interfaces for messaging configuration, automation, and monitoring
- Improve automated testing, observability, performance, and reliability across legacy and new services
- Collaborate with Product, Design, QA, DevOps, Architects, and other engineering teams
- Review code, mentor other engineers, and use AI-assisted development tools
CreatorIQ is the operating system for creator-led growth, trusted by 1,300+ global brands and agencies. The company processes 250+ million social posts daily and maintains relationships with 15+ million creators worldwide. CreatorIQ is a Deloitte Technology Fast 500 company (4 years running), IDC MarketScape leader, and Forrester New Wave leader in influencer marketing solutions.
The company operates a flexible work model combining in-person and remote work. Global offices include Los Angeles (HQ), Austin, New York, San Francisco, London, Manila, and Warsaw.
REQUIREMENTS:
- 5+ years professional software development experience, including ownership of complex production systems
- Strong backend development experience with Node.js and TypeScript
- Good working knowledge of PHP with ability to understand, debug, and safely modify existing PHP codebase
- Experience modernizing legacy applications or incrementally migrating functionality from monolith into microservices or serverless architectures
- Experience designing and building REST or GraphQL APIs, third-party integrations, and asynchronous processing workflows
- Experience designing APIs for machine-to-machine or agent-driven use with clear contracts, structured schemas, predictable behavior, and strong error handling
- Strong knowledge of relational databases, data modeling, transactions, and query optimization
- Experience with OAuth 2.0, external provider authentication, secure token management, rate limits, retries, and failure handling
- Experience working with AWS or another major cloud platform
- Experience building customer-facing applications with React and TypeScript
- Strong understanding of automated testing, CI/CD, observability, and production support
- Strong problem-solving and communication skills with ability to independently own features from technical discovery through production rollout
- Upper-Intermediate or higher English proficiency, both written and spoken
PLUS (preferred):
- Experience building AI agents, copilots, LLM-based applications, or workflow orchestration platforms (LangGraph, CrewAI, Strands Agents, AWS AgentCore)
- Experience developing email, messaging, notification, or communication platforms including messaging automation, sequencing, scheduling, or campaign orchestration
- Experience integrating with Google Workspace, Gmail APIs, Microsoft Graph, or Outlook 365
- Knowledge of email delivery and authentication technologies (SMTP, SPF, DKIM, DMARC, Amazon SES)
- Experience with message queues and event-driven technologies (Kafka, SQS, SNS, EventBridge)
- Familiarity with JSON Schema, OpenAPI, function calling, or Model Context Protocol (MCP)
