Senior Back-End Engineer (Node.js)
Remote · Lviv, Lviv, Ukraine
Job Summary
Senior Backend Engineer to design and build backend microservices for a unified enterprise platform, integrating external carrier/telecom APIs, implementing event-driven workflows with Kafka and Temporal, and collaborating on API design (REST/GraphQL) with Node.js and TypeScript. Responsibilities include building microservices modules (Identity/RBAC/MFA, number search, purchase/porting, onboarding automation, CDR and billing pipelines), integrating with external APIs (Operator Connect, payment/billing systems, ServiceNow), implementing automated tests, participating in code reviews, and supporting CI/CD. Requires 5+ years of backend experience, strong microservices/API design skills, PostgreSQL experience, Docker/Kubernetes and AWS, and English proficiency. Nice-to-have: AWS certification, VoIP/telecom exposure, and related Node.js certifications. Note: remote-friendly with a relocation program and a global, multicultural environment.
Required Qualifications
- 5+ years of backend development experience with Node.js and TypeScript
- Strong background in microservices architecture and API design (REST and GraphQL)
- Proficient in containerization and orchestration using Docker and Kubernetes (EKS)
- Practical experience with AWS cloud services
- Hands-on experience with event-driven systems (Kafka)
- Experience with workflow orchestration tools (Temporal.io)
- Relational databases experience (PostgreSQL)
- English proficiency at B2 level or higher
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