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Collins Ihezie

@collinsihezie

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I’m a Senior Software Engineer specializing in scalable Web3 backend and blockchain systems.

Nigeria

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What I'm looking for

I want to lead engineering that ships secure, scalable Web3 and backend systems. I’m excited by strong architecture, observability-driven reliability, and teams that prioritize security, performance, and clear ownership.

I’m a Senior Software Engineer with 8+ years of experience building scalable blockchain and backend systems. I focus on Solidity- and Rust-based architectures alongside TypeScript and C# services, with a practical eye for security, performance, and decentralization.

I’ve led and delivered DEXs, DAOs, and AI-integrated Web3 apps, owning the smart contract lifecycle end-to-end. That includes design, testing, audits, deployment, and security hardening—plus enforcing best practices for architecture and code quality across teams.

In DevOps and SRE roles, I’ve built and operated AWS infrastructure at scale, including containerized platforms and CI/CD pipelines. I use infrastructure-as-code and observability (Prometheus, Grafana, CloudWatch) to maintain high availability, rapid incident response, and scalable, auditable operations.

Professionally, I bring strong technical leadership and mentorship, having served as Technical Assistant to the CEO and later as CTO & Head of Engineering. I’m energized by teams that value secure engineering practices, measurable reliability, and shipping production-ready products that perform under real-world traffic.

Experience

Work history, roles, and key accomplishments

Current

Senior DevOps/SRE Engineer

Current

Valuepay Payment Solutions

Jan 2025 - Present (1 year 7 months)

Designed and managed AWS infrastructure for high-availability payment APIs, including Kubernetes/EKS-based container platforms and automated CI/CD. Implemented infrastructure-as-code, monitoring, and observability to support scalable, auditable cloud operations.

AWS EC2 Kubernetes Lambda VPC Subnets Security Groups IAM DynamoDB S3 SES ECR GitHub Actions CI CD Docker Infrastructure as Code Terraform Prometheus Grafana Cloudwatch Observability Amazon EKS

CTO & Head of Engineering

Switchive Technologies

Jul 2024 - Jan 2026 (1 year 6 months)

Led and built blockchain platforms on Ethereum and Solana, implementing DeFi/DEX protocols with Layer-2 scaling via ZK and optimistic rollups. Owned the smart contract lifecycle including design, testing, audits, deployment, and security hardening.

Ethereum Solidity Solana Rust DeFi Dex Liquidity Pools Swap Routing Security Auditing Smart Contracts Security Hardening

Senior Backend Engineer

Irecharge Tech Innovations

Jan 2023 - Jan 2025 (2 years)

Built a high-availability payment gateway using NestJS (TypeScript) and ASP.NET Core (C#) with microservices and event-driven architecture on AWS. Delivered scalable, resilient services with robust testing, observability, and asynchronous messaging.

NestJS TypeScript ASP.NET Core C#AWS Microservices Event Driven Architecture Unit Testing Integration Testing Contract Testing Asynchronous Service Decoupling Observability

DevOps Engineer

Aeona

Jan 2023 - Jan 2024 (1 year)

Designed and managed secure AWS infrastructure for a high-availability payment system, including containerized deployments and CI/CD automation. Used IaC and monitoring to support scalability and reliability for production workloads.

Terraform Ansible AWS EC2 Kubernetes Lambda RDS ALB DynamoDB S3 GitHub Actions CI CD Containerization Infrastructure as Code Monitoring Amazon EKS

Backend Engineer

Fagopay

Jan 2022 - Jan 2023 (1 year)

Built a high-performance logistics backend using C# and ASP.NET with microservices and CQRS/event-driven architecture. Implemented RabbitMQ messaging, Hangfire jobs, and WebSockets to support order placement, delivery tracking, and real-time rider communication.

C#ASP.NET Microservices CQRS Event Driven Architecture RabbitMQ Hangfire WebSockets

Mobile Developer

Blinqpay

Jan 2021 - Jan 2023 (2 years)

Developed and maintained high-performance Flutter and Android applications integrating payment gateways. Optimized app performance and collaborated with backend and design teams to deliver secure, user-friendly experiences.

Flutter Android Payment Gateways Performance Optimization

Android Developer

MyShowroom

Jan 2020 - Jan 2022 (2 years)

Developed an Android e-commerce application with payment gateway integration and personalized features. Improved performance and responsiveness using Kotlin coroutines and StateFlow.

Kotlin Coroutines Android Payment Integration Performance Optimization