Cloud Telco Core Architect & API Strategy Lead

PT. Indosat Tbk; Jakarta Pusat; On-site; IDR 400,000,000 - 700,000,000; Full time

Job summary

PT. Indosat Tbk seeks a Cloud Core Architect & Services to define and drive the architecture of the cloud‑native core platform while shaping the company’s API strategy for scalable, secure services.

You will collaborate across Engineering, IT/Digital, Cybersecurity and external partners to accelerate digital services, modernize networks, and monetize APIs through robust governance and automation.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or related field.
• 8–15+ years in network/cloud architecture or platform engineering.
• Hands‑on experience with large‑scale cloud‑native telco systems.
• Experience designing or leading API ecosystems (internal or external).
• Proven leadership in multi‑vendor, cross‑functional environments.

Responsibilities

• Design and govern cloud‑native core architecture (EPC, IMS, 5G Core, UDM, PCF, NEF).
• Define architecture patterns for CNFs/NFVs (OpenStack, Kubernetes), network slicing, edge cloud, and distributed compute.
• Deliver target‑state and transition‑state architecture maps aligned to the technology roadmap.
• Create long‑term roadmap and implementation plans for Telco cloud infrastructure.
• Lead API strategy covering Network APIs (NEF, CAPIF/3GPP, CAMARA), Enterprise APIs (B2B exposure), and internal service APIs for microservices.
• Align with GSMA Open Gateway standards and lead API governance, standards and lifecycle management.
• Oversee API gateways, service mesh, identity and access frameworks (OAuth2/OIDC/MTLS).
• Support Telco API monetization by translating network capabilities into monetizable APIs.
• Drive automation (IaC, CI/CD, GitOps) and cloud reliability (SRE, observability).
• Implement Zero Trust controls across identity, workload and network layers with full policy coverage.
• Maintain architecture blueprints, reference models and decision records; publish updates quarterly.
• Lead vendor evaluation, architecture reviews and technology roadmaps; conduct review boards with ≥90% project compliance to standards.

Skills

Cloud-native telco core

Kubernetes & service mesh

APIs & security (REST, gRPC, OAuth2/Ọ

Education

Bachelor’s or Master’s in CS/EE

Tools

Kubernetes

Terraform

CI/CD

Job description

PT. Indosat Tbk seeks a Cloud Core Architect & Services to define and drive the architecture of the cloud‑native core platform while shaping the company’s API strategy for scalable, secure services.

You will collaborate across Engineering, IT/Digital, Cybersecurity and external partners to accelerate digital services, modernize networks, and monetize APIs through robust governance and automation.