Founding Engineer

Share

11d

About The Position

Share is a venture-backed internet infrastructure network building Africa’s backbone. The company aggregates underutilized telecom infrastructure, fiber, subsea cables, and data centers, and provides ISPs with scalable access to bandwidth without traditional upfront costs. Through an open-access model, local internet providers can deliver dramatically faster speeds to their subscribers without raising their own costs. The platform team builds the software that makes this work: billing, payments, subscriber management, RADIUS-based network authentication, and integrations with ISP billing systems and mobile money providers. We are replacing legacy, non-API systems with a modern API platform, and real money is already flowing through the system. This is a small, high-intensity engineering team building core infrastructure under real deadlines. You will own entire domains, not tickets.

Requirements

• 7+ years of professional software engineering experience
• At least 3 years in backend systems handling real financial transactions (payments, billing, ledger, or treasury)
• Deep TypeScript/Node.js expertise
• Ability to design a NestJS microservice from scratch
• Production experience with payment gateway integrations (M-Pesa, Stripe, Adyen, or similar)
• Understanding of STK push flows, webhook idempotency, callback signature verification, and reconciliation
• Strong PostgreSQL skills
• Ability to design schemas for financial data, write migrations, and reason about transaction isolation and locking
• Experience with event-driven architectures (Kafka, RabbitMQ, or similar)
• Understanding of request-reply and fire-and-forget patterns and when to use each
• Ability to take a spec document and turn it into production code without waiting for tasks to be broken down
• Daily use of AI coding assistants (Claude, Cursor, Copilot, or similar) and ability to articulate how they change workflow
• Comfort working with AI-generated specifications, critically evaluating them, pushing back where wrong, and extending them where incomplete
• View AI as a force multiplier, not a threat
• Willingness to contribute to improving AI-assisted workflows

Responsibilities

• Take ownership of the platform’s most critical technical domains: the payments pipeline (collections, revenue splitting, treasury operations), the billing engine (subscription lifecycle, cycle management, automated renewals), and the integration layer (BSS/OSS sync with partner systems).
• Work directly with the CTO and a small team of engineers to ship production systems that handle real financial transactions for real ISP partners.
• Use AI tools as a daily part of their workflow for project planning, specification, and documentation.
• Contribute to improving AI-assisted workflows (prompts, context files, session structures).

Benefits

• Competitive Salary & Equity package
• Paid Business Travel when needed
• Ownership in a venture-backed early stage startup building the future of physical and digital infrastructure in Africa

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed