Backend Development Engineer -CPaaS Business Department

About The Role

About Organization
We are building the next generation of our CPaaS platform, a robust ecosystem powering multi-channel communication services. Our platform supports global traffic across SMS, Email, Voice, WhatsApp, LINE, RCS, Passkey, and advanced Authentication services. We are looking for a highly skilled Backend Engineer to drive the scalability, reliability, and evolution of these services within a high-autonomy, fast-paced R&D environment.
Job Duties
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Backend Service Development:Design, implement, and optimize microservices powering multi-channel communication workloads.
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Feature Engineering:Build and enhance backend capabilities supporting messaging, identity, verification, and communication APIs.
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Distributed Systems Engineering:Develop high-throughput, low-latency services for global CPaaS traffic.
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Database Engineering:Design schemas, optimize queries, and ensure peak performance across databases.
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Cloud-Native Architecture:Deploy and operate services on Kubernetes, ensuring resilience, scalability, and cost-efficiency.
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API-First Engineering:Build clean, scalable REST APIs and contribute to API-first product architecture.
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CI/CD & GitOps:Manage version-controlled pipelines for build validation, automated testing, and safe deployments.
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AI-Enhanced Development:Utilize LLM-based tools (e.g., Claude, Codex) to improve code quality, automate documentation, and accelerate development workflows.
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Observability:Ensure system visibility using Grafana, Prometheus, and structured logging.
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Cross-Functional Collaboration:Partner with Product Managers, QA, DevOps/SRE, and UI/UX teams to deliver high-quality features.
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Engineering Excellence:Uphold coding standards, conduct code reviews, and drive continuous improvement of engineering practices.

Minimum Qualifications

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5+ years of hands-on backend development experience.
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Strong proficiency in Java or Golang.
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Expertise with Postgres and MySQL.
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Hands-on experience with Kubernetes and containerization.
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Experience with CI/CD pipelines (GitHub Actions preferred).
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Experience with Microservices and API-first system design.
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AI-Assisted Development: Proficient in leveraging LLM-based tools for coding, automation, and workflow acceleration.
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Advanced English proficiency (strong communication, documentation, and collaboration skills).

Preferred Qualifications

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Domain experience with communication protocols (SMPP, SIP, REST APIs, WebRTC).
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Experience across multiple CPaaS domains (SMS, Email, Voice, Passkey, Auth Services, WhatsApp, LINE, RCS, etc.).
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Proven ability to work effectively in fast-moving, high-autonomy environments.
Key Interfaces
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Backend Engineering Team
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QA & Automation Teams
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DevOps / SRE
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Product Managers
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UI/UX Designers
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Project Managers
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R&D Leadership / CTO
Languages:
English (Overall - 3 - Advanced)