About the role

CRNCY Group is hiring a hands-on Senior Integration Engineer to build and run the real-time integration layer for its contact centre, connecting Monumint, uContact, its Loan Management System, internal services and third-party APIs on an event-driven core. The team ships production code weekly and works with AI coding agents.

Responsibilities

Design and build integrations across Monumint, uContact, the LMS, internal applications and third-party services using Kafka event streams, REST APIs and webhooks
Build on the event-driven architecture: producers and consumers, topic and schema design, idempotency, ordering, retries, dead-letter handling and backpressure
Build Node/TypeScript services in NestJS, run as containers on GCP and backed by Postgres
Build MCP servers that give AI agents and engagement platforms safe, well-scoped access to systems and data
Turn contact centre workflow improvements into production features, such as call routing driven by real-time account status
Make integrations observable (logging, metrics, tracing, alerting) and own their production health, from incident response to root-cause fixes
Secure every interface (OAuth 2.0, JWT, API keys, secrets management) and assess vendor APIs for feasibility and fit
Keep architecture, API contracts and data mappings documented

Requirements

Bachelor's degree in Computer Science, Software Engineering, IT or a related field, or equivalent education, certifications and experience
Significant software engineering experience (typically 6+ years), much of it building and running integrations
Strong Node.js and TypeScript
Production experience with NestJS or a comparable modern API framework
GCP and containerized workloads (Docker plus GKE or Cloud Run), with CI/CD
Postgres schema design, query performance and transactional patterns such as the outbox pattern
Experience building MCP (Model Context Protocol) servers
Deep familiarity with event-driven architecture and Kafka in production, including high-throughput integrations for business-critical applications
Clear communication with operations and business stakeholders
Daily use of AI coding agents, including running several in parallel and verifying their output

Preferred qualifications

NestJS experience