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Ayanleke Stephen

@ayanlekestephen

Senior Backend Engineer and Backend Lead delivering secure, high-performance APIs across fintech, healthcare, and automotive.

Nigeria

Message

What I'm looking for

I’m looking to lead backend architecture and deliver secure, high-performance APIs on AWS—while mentoring engineers and improving system reliability, maintainability, and performance through clean microservices and strong engineering standards.

I’m a Senior Backend Engineer and Backend Lead with 5+ years of experience designing, scaling, and leading production backend systems across fintech, healthcare, and automotive domains. I focus on system architecture, microservices design, API development, and cloud-based deployments on AWS to deliver secure, high-performance services.

I’ve led backend engineering for healthcare systems handling sensitive medical data and regulatory compliance, managed and mentored backend engineers, and enforced engineering standards and delivery practices. I’ve also migrated microservices into scalable monorepo architecture, optimized MongoDB/MongoDBAtlas queries, and driven measurable outcomes like improved customer satisfaction and retention by 50%, while coaching engineers on real-world backend and AI-assisted development workflows.

Experience

Work history, roles, and key accomplishments

Current

Full Stack AI Coach

Current

Heels and Tech

May 2026 - Present (2 months)

Led full-stack application development across backend and frontend using modern JavaScript/TypeScript. Coached and mentored aspiring engineers in AI engineering, backend development, API design, and database architecture.

JavaScript TypeScript API Design Database Architecture Full Stack Developer

Lead Backend Engineer

BERALD LIS

Feb 2024 - Apr 2026 (2 years 2 months)

Led backend architecture and development for healthcare systems handling sensitive medical data and regulatory compliance. Managed and mentored backend engineers and optimized MongoDB/MongoDB Atlas queries to improve system efficiency and stability.

backend architecture Security Reliability Performance MongoDB MongoDB Atlas Engineering Leadership Compliance

Backend & DevOps Engineer

Evea

Sep 2023 - Jan 2024 (4 months)

Owned backend API development for mobile and web platforms. Led migration of 3 microservices into a unified monorepo and implemented AWS + Serverless deployments, including third-party API integrations.

Backend Microservices AWS Serverless API Integration Deployment

Backend Engineer

PayRit

Mar 2023 - Aug 2023 (5 months)

Refactored and rebuilt payment-related backend services and APIs. Improved system reliability and customer satisfaction while supporting integrations with external financial APIs and services.

Payment Integration Backend Services API Integration Reliability

Backend Engineer

MechoAutotech

Mar 2022 - Jan 2023 (10 months)

Developed scalable REST APIs for consumer and admin systems. Improved backend payment workflows to increase customer retention and collaborated with product and engineering teams to deliver new platform features.

REST APIs Backend Development Consumer Admin Systems

QA & Backend Developer (Intern)

MechoAutotech

Sep 2021 - Mar 2022 (6 months)

Assisted in improving system stability through structured testing processes. Supported backend development work while learning testing and quality practices.

QA System Stability Testing