Founding Engineer

About the role

We are looking for a Founding Engineer to own and build the core payments, billing, and integration platform that powers our telecom infrastructure network. You will work directly with the CTO and a small, high‑intensity engineering team to deliver production‑grade systems handling real financial transactions for ISP partners.

Key responsibilities

• Design, develop, and maintain the payments pipeline, including collections, revenue splitting, and treasury operations.
• Build and evolve the billing engine covering subscription lifecycle, cycle management, and automated renewals.
• Implement the integration layer that synchronises BSS/OSS data with partner systems.
• Create NestJS microservices from scratch and ensure robust API design.
• Integrate with payment gateways such as M‑Pay, Stripe, and Adyen, handling STK push flows, webhook idempotency, and reconciliation.
• Design PostgreSQL schemas for financial data, write migrations, and manage transaction isolation and locking.
• Leverage event‑driven architectures (Kafka, RabbitMQ) to build reliable, scalable pipelines.
• Use AI coding assistants daily to accelerate development, specification, and code review.

Required profile

• 7+ years of professional software engineering experience.
• At least 3 years building backend systems that process real financial transactions.
• Deep expertise in TypeScript and Node.js, with the ability to design NestJS microservices.
• Proven experience integrating payment gateways (M‑Pay, Stripe, Adyen) and handling related flows.
• Strong PostgreSQL knowledge, including schema design and transaction management.
• Hands‑on experience with event‑driven platforms such as Kafka or RabbitMQ.
• Comfortable using AI tools (Claude, Copilot, Cursor, etc.) as an integral part of the workflow.

Required skills

• TypeScript
• Node.js
• NestJS
• PostgreSQL
• Kafka
• RabbitMQ
• M‑Pay integration
• Stripe integration
• Adyen integration
• STK push flow handling
• Webhook idempotency and signature verification
• Financial data reconciliation
• AI coding assistants (Claude, Copilot, Cursor)