Senior API & Integration Engineer (E-Wallet, Cloud & AI)

• Deep mastery of backend development in Go, Java, Python, or C# in high-throughput, low-latency financial or telecom systems.
• Proven track record in API Architecture and Enterprise Integration Patterns (EIP) with orchestration tools like Temporal, Camunda, or custom mediation layers.
• Strong background in cloud migration using AWS, GCP, or Azure, and container orchestration with Kubernetes and Docker.
• Expertise in relational databases PostgreSQL and MySQL and event-driven streaming platforms Apache Kafka or RabbitMQ.
• Exposure to telecom protocols (USSD, SMSC) or enterprise e-wallet engines (Ericsson MFS, Huawei Mobile Money, Telepin) is a major plus.

Nice to have:

• Experience with Temporal, Camunda, Terraform, OpenTofu, LangChain, and vector databases (pgvector).

API Orchestration & Mediation:

• Design and implement intelligent mediation layers connecting web/mobile apps, telecom networks (USSD/SMS), and core e-wallet ledger engines.

Cloud Migration & Architecture:

• Lead backend re-architecting of core e-wallet infrastructure into scalable, containerized microservices on Kubernetes.

AI & LLM Workflows:

• Build integration endpoints and application logic for AI capabilities, orchestrating LLM workflows, RAG pipelines, and vector databases into the fintech ecosystem.

Fintech Security & Resilience:

• Develop highly concurrent code with transaction rollbacks (Saga pattern), circuit breakers, and fintech-grade security protocols (mTLS, OAuth2, PCI-DSS).