Ebiperre I.

Most founders don’t need another developer to write code. They need someone who knows which technical decisions will cost them six months and $50k later. I’m a Senior Software Engineer and Technical Lead with 7+ years of experience designing, building, fixing, and scaling production software across SaaS, fintech, payments, e-commerce, and high-volume systems. I work with founders and engineering teams when they need more than someone who can simply complete tickets. That could mean designing a backend architecture, fixing a system that won’t scale, integrating complex APIs, modernizing an existing product, introducing AI into an application, or providing senior technical direction before expensive engineering decisions are made. PROVEN IN PRODUCTION High-Concurrency Systems Rebuilt a core transaction pipeline processing $2M+/month that was failing roughly 30% of transactions during peak load. Moving the architecture to Elixir/Phoenix with circuit breakers and strict idempotency reduced failures to under 2%, lowered latency from 8s to 2.3s, and maintained 99.9% uptime across 50,000+ concurrent users. 0 → 1 Product Development As a startup co-founder, took a product from an empty repository to production iOS and Android applications, including backend architecture, AWS infrastructure, authentication, third-party integrations, KYC workflows, and regulatory requirements. Production SaaS Built and shipped three Shopify applications, PreOrder Now, FraudFlag, and StoreVerify, running in active production. WHAT I CAN HELP YOU WITH • Backend architecture and development • API design and third-party integrations • SaaS architecture and product development • Performance and scalability engineering • Database design and optimization • Cloud architecture and infrastructure • Legacy system modernization • AI/LLM integrations and workflow automation • Payment infrastructure and transaction systems • System architecture reviews and technical audits • Engineering leadership and technical direction • Fractional CTO / Technical Lead engagements WHERE I HAVE DEEP EXPERIENCE Backend & Distributed Systems I design reliable systems around APIs, asynchronous workloads, queues, webhooks, databases, caching, concurrency, observability, and failure recovery. API & Platform Integrations From payment providers and identity verification services to Shopify, SaaS platforms, internal systems, and AI APIs, I build integrations that survive real production conditions rather than just passing a demo. Fintech & Payments I have deep experience with Paystack, Flutterwave, Stripe, transaction reconciliation, webhook reliability, idempotency, fraud controls, KYC workflows, and African payment infrastructure. AI & Automation I integrate tools such as Anthropic and other modern AI APIs into real products and operational workflows, with an emphasis on reliability, maintainability, and actual business value rather than AI for its own sake. Architecture & Technical Strategy I help teams make better decisions around system design, technology selection, build-vs-buy, technical debt, scalability, engineering processes, and product architecture. HOW I WORK I work particularly well with teams that are: • building a new product and need senior technical direction • struggling with scalability or reliability • integrating multiple external systems • modernizing an existing application • introducing AI capabilities into their product • preparing an architecture for significant growth • looking for a senior engineer who can both design the system and write the code If something is blocking your launch, slowing down your platform, or creating uncertainty around the architecture, send me the problem. I’ll help you figure out what needs to change — and, where appropriate, build it.