Senior API & Integration Engineer (E-Wallet, Cloud & AI)
Posted
As a Senior API & Integration Engineer, you will own the design and implementation of API orchestration and mediation layers bridging web/mobile apps, telecom networks (USSD/SMS), and core e-wallet engines. You will lead the cloud-native migration of legacy financial infrastructure to Kubernetes while building an AI integration layer for LLM workflows and vector databases.
What we are looking for:
- Deep mastery of backend development (Go, Java, Python, or C#) in high-throughput, low-latency financial or telecom systems.
- Proven track record in API Architecture & Enterprise Integration Patterns (EIP), with hands-on experience using orchestration tools (Temporal, Camunda) or custom mediation layers.
- Strong background in cloud migration (AWS/GCP/Azure), Kubernetes, Docker, and IaC (Terraform/OpenTofu).
- Expertise in relational databases (PostgreSQL/MySQL) and event-driven streaming (Kafka/RabbitMQ).
- Exposure to telecom protocols (USSD, SMSC) or enterprise e-wallet engines (Ericsson MFS, Huawei Mobile Money, Telepin) is a major plus.
Must-have:
- API Orchestration / REST API
- Java / Go / Python
- Kubernetes & Docker
- Cloud Architecture (AWS / GCP / Azure)
- PostgreSQL / MySQL
Nice-to-have:
- Enterprise Integration Patterns (EIP) / Temporal / Camunda
- Apache Kafka / RabbitMQ
- Terraform / OpenTofu
- LangChain / Vector DBs (pgvector)
- Telecom Protocols (USSD / SMSC)