I'm Maxwell Oleru, a Full Stack Engineer with hands-on experience designing, building, and deploying scalable web applications from the ground up. I focus on performance, security, and delivering a great user experience. I enjoy turning complex requirements into robust, maintainable systems and collaborating with cross-functional teams to ship delightful products.…

Maxwell Oleru

I'm Maxwell Oleru, a Full Stack Engineer with hands-on experience designing, building, and deploying scalable web applications from the ground up. I focus on performance, security, and delivering a great user experience. I enjoy turning complex requirements into robust, maintainable systems and collaborating with cross-functional teams to ship delightful products.…

Available to hire

I’m Maxwell Oleru, a Full Stack Engineer with hands-on experience designing, building, and deploying scalable web applications from the ground up. I focus on performance, security, and delivering a great user experience.

I enjoy turning complex requirements into robust, maintainable systems and collaborating with cross-functional teams to ship delightful products.

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Skills

Experience Level

AWS
Expert
Amazon Web Services
Expert
Docker
Expert
Node.js
Expert
JavaScript
Expert
Kubernetes
Expert
React JS
Expert
PostgreSQL
Expert
MongoDB
Expert
HTML5
Expert
DynamoDB
Expert
TypeScript
Expert
MySQL
Expert
Github
Expert
Express
Expert
CSS
Expert
Python
Expert
Nexus
Expert
Bash
Expert
API
Expert
GraphQL
Intermediate
SQL
Intermediate
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Language

English
Fluent

Work Experience

Senior DevOps & Site Reliability Engineer at ProSync-Global LLC
May 1, 2023 - Present
Led DevOps initiatives with cross-functional teams (security consultants, developers, full-stack engineers) to refine processes and automation — ensuring that website updates reached users faster, with fewer bugs and interruptions. Reduced AWS billing by 48% through a zero-downtime NAT Instance migration, enabling reallocation of cost savings into website innovation and performance improvements that directly enhanced user browsing speed and reliability. Developed Terraform modules for AWS resource provisioning and recovery, which gave the website predictable performance during updates, minimized downtime, and ensured users always had a consistent experience. Implemented secure, scalable Kubernetes (EKS) clusters for microservices powering the site, ensuring that users experienced faster page loads, uninterrupted access, and improved responsiveness during traffic spikes. Automated IAM role creation and fine-grained permissions, safeguarding sensitive website features while still allow
Part-time Web Developer / DevOps Engineer at KIKISHOP (E-COMMERCE)
February 1, 2023 - Present
Developed and deployed scalable, secure e-commerce applications on AWS using CI/CD automation (Jenkins, AWS CodeBuild, AWS CodePipeline). This ensured seamless rollouts of new features on Dkikishop, allowing customers to shop and checkout smoothly without downtime. Architected and optimized MongoDB as the primary product and order database, ensuring fast product queries, seamless cart operations, and reliable storage of transaction data. Implemented MongoDB Atlas with sharding and replica sets, enabling high availability and faster failover during peak shopping periods, so customers never lost access to their carts or order history. Designed proactive cost and performance monitoring systems (CloudWatch, VPC Flow Logs, DataDog, LogicMonitor) to quickly detect and resolve issues. Users benefited from faster page loads, consistent uptime, and smoother payment experiences. Implemented a secure 3-tier architecture (Frontend in Next.js, Backend APIs in Node.js, and MongoDB in VPC) strengthen
Part-time Technical Assistant | Support Engineer at Loctech Training Institute – Port Harcourt
December 31, 2024 - October 10, 2025
Managed database input, network configurations, and user access controls, ensuring students and staff could reliably access course materials, applications, and internal resources without errors or downtime. Installed, integrated, and tested hardware/software systems so that classroom devices, training applications, and online resources worked seamlessly — giving learners a smooth, interruption-free study experience. Provided VPN setup and troubleshooting for remote users, enabling off-site students and staff to securely access institute resources, which improved learning flexibility and ensured consistent performance regardless of location. Assisted in firewall rule updates, port security, and DHCP/DNS management, strengthening data protection while guaranteeing fast and secure internet and intranet access for users. Collaborated with cross-functional IT teams to resolve complex integration and security challenges, which reduced system downtime and gave learners and trainers a more r
Senior DevOps & Site Reliability Engineer at ProSync-Global LLC
May 1, 2023 - Present
Led DevOps initiatives across security consultants, developers, and full-stack engineers to refine processes and automation — ensuring that website updates reached users faster, with fewer bugs and interruptions. Implemented cost reductions and improved reliability through cloud migrations, Terraform modules, and Kubernetes-based microservices. Built and maintained a full-stack CI/CD framework and a scalable CI/CD pipeline with Terraform, GitHub Actions, and Kubernetes that cut deployment time by 65%. Automated patching and resource cleanup, ensured auto-scaling and failover, and maintained continuous availability.
Part-time Web Developer / DevOps Engineer at KIKISHOP (E-COMMERCE)
February 1, 2023 - Present
Developed and deployed scalable, secure e-commerce applications on AWS using CI/CD automation (Jenkins, AWS CodeBuild, AWS CodePipeline). Led deployment of backend services with Jenkins, Maven, Nexus, and SonarQube. Implemented real-time monitoring (Prometheus, Grafana) and optimized MongoDB with sharding and Atlas for high availability. Built Temporal Workflow to spin ECS tasks on demand and automated patching/upgrades with Ansible. Implemented proactive cost and performance monitoring and a secure 3-tier architecture with Bastion, Lambda Step Functions, and Route 53 for DNS and SSL management.
Part-time Technical Assistant | Support Engineer at Loctech Training Institute – Port Harcourt
December 31, 2024 - October 10, 2025
Managed databases, network configurations, user access controls; installed, integrated, and tested hardware/software systems for classroom devices and resources; provided VPN setup and troubleshooting for remote users; assisted in firewall updates and security configurations; collaborated with cross-functional IT teams to resolve integration challenges and reduce downtime.
Senior DevOps & Site Reliability Engineer at ProSync-Global LLC
May 1, 2023 - Present
Led DevOps initiatives with cross-functional teams (security consultants, developers, full-stack engineers) to refine processes and automation, ensuring that website updates reach users faster with fewer bugs and interruptions. Reduced AWS billing by 48% through a zero-downtime NAT Instance migration, enabling cost savings to be redirected toward website innovation and performance improvements that directly enhanced user browsing speed and reliability. Developed Terraform modules for AWS resource provisioning and recovery, providing predictable performance during updates and minimizing downtime. Implemented secure, scalable Kubernetes (EKS) clusters for microservices powering the site, delivering faster page loads and improved reliability during traffic spikes. Automated IAM role creation with fine-grained permissions to safeguard sensitive features while enabling rapid releases. Collaborated on a full-stack CI/CD framework (Next.js frontend, Node.js backend, Aurora PostgreSQL) with au
Part-time Web Developer / DevOps Engineer at KIKISHOP (E-COMMERCE)
February 1, 2023 - Present
Developed and deployed scalable, secure e-commerce applications on AWS using CI/CD automation (Jenkins, AWS CodeBuild, AWS CodePipeline). Led deployment of backend applications with Jenkins, Maven, Nexus, and SonarQube, maintaining continuous integration and code quality. Implemented real-time monitoring with Prometheus and Grafana for rapid issue resolution, ensuring a stable and reliable shopping experience. Architected MongoDB with Atlas, including sharding and replica sets, for high availability and fast failover during peak periods. Built a Temporal Workflow application to spin up ECS tasks on demand, improving site scalability during traffic surges such as flash sales. Automated patching and upgrades with Ansible across Dev, Test, and Production environments in AWS and Azure, minimizing downtime. Implemented proactive cost and performance monitoring with CloudWatch, VPC Flow Logs, DataDog, and LogicMonitor. Designed a secure 3-tier architecture (Frontend Next.js, Backend APIs in
Part-time Technical Assistant | Support Engineer at Loctech Training Institute – Port Harcourt
December 31, 2024 - October 10, 2025
Managed database input, network configurations, and user access controls to ensure reliable access to course materials and internal resources. Installed, integrated, and tested hardware and software systems for classroom devices, training applications, and online resources. Provided VPN setup and troubleshooting for remote users, enabling off-site students and staff to securely access institute resources. Assisted in firewall rule updates, port security, and DHCP/DNS management to strengthen data protection while ensuring fast, secure internet and intranet access. Collaborated with cross-functional IT teams to resolve integration and security challenges, reducing downtime and delivering a more reliable digital environment.
Senior DevOps & Site Reliability Engineer at ProSync-Global LLC
May 1, 2023 - Present
Led DevOps initiatives with cross-functional teams to refine processes and automation — ensuring that website updates reach users faster, with fewer bugs and interruptions. Reduced AWS billing by 48% through a zero-downtime NAT Instance migration, enabling reallocation of cost savings to website innovation and performance improvements. Developed Terraform modules for AWS resource provisioning and recovery to ensure predictable performance during updates. Implemented secure, scalable Kubernetes (EKS) clusters for microservices powering the site, automated IAM role creation and fine-grained permissions, and collaborated on a full-stack CI/CD framework (Next.js frontend, Node.js backend, Aurora PostgreSQL) with automated containerization and monitoring. Designed a scalable CI/CD pipeline (Terraform, GitHub Actions, Kubernetes) that cut deployment time by 65%. Conducted regular infrastructure health checks and automated cleanup of unused resources, automated patching with GitHub Actions,
Part-time Web Developer / DevOps Engineer at KIKISHOP (E-COMMERCE)
February 1, 2023 - Present
Developed and deployed scalable, secure e-commerce applications on AWS using CI/CD automation (Jenkins, AWS CodeBuild, AWS CodePipeline). Led backend deployments with Jenkins, Maven, Nexus, and SonarQube; implemented real-time monitoring with Prometheus/Grafana; optimized MongoDB with Atlas (sharding/replicas) for fast queries and stock updates; built on-demand ECS tasks (Temporal) to handle traffic spikes; automated patching (Ansible); established proactive cost/performance monitoring and a secure 3-tier architecture in a VPC with Bastion hosts and Lambda step functions; managed DNS/SSL via Route 53.
Part-time Technical Assistant / Support Engineer at Loctech Training Institute – Port Harcourt
December 1, 2024 - October 10, 2025
Managed databases, networks, user access controls; installed and tested hardware/software systems to ensure classroom devices and resources worked seamlessly; provided VPN setup and troubleshooting for remote users; updated firewall rules and DHCP/DNS settings; collaborated with cross-functional IT teams to resolve security challenges and complex integrations, reducing downtime and improving reliability for learners and staff.
Senior DevOps & Site Reliability Engineer at ProSync-Global LLC
May 1, 2023 - Present
Led DevOps initiatives with cross-functional teams to refine processes and automation, accelerating website updates with fewer bugs and interruptions. Reduced AWS billing by 48% through a zero-downtime NAT Instance migration, enabling cost savings for website innovation and performance improvements. Developed Terraform modules for AWS provisioning and disaster recovery, delivering predictable performance during updates. Implemented secure, scalable Kubernetes (EKS) clusters for microservices powering the site, ensuring faster page loads and resilience. Automated IAM role creation with fine-grained permissions to boost security without hindering release velocity. Contributed to a full-stack CI/CD framework (Next.js frontend, Node.js backend, Aurora PostgreSQL) with automated containerization and monitoring. Designed and implemented a scalable CI/CD pipeline using Terraform, GitHub Actions, and Kubernetes, cutting deployment time by 65%. Performed regular infrastructure health checks and
Part-time Web Developer / DevOps Engineer at KIKISHOP (E-COMMERCE)
February 1, 2023 - Present
Developed and deployed scalable, secure e-commerce applications on AWS using CI/CD automation (Jenkins, AWS CodeBuild, AWS CodePipeline). Architected and optimized MongoDB as the primary product and order database, including MongoDB Atlas with sharding and replica sets for high availability and fast failover. Implemented proactive cost and performance monitoring (CloudWatch, S3, DataDog, LogicMonitor) to detect and resolve issues quickly. Designed a secure 3-tier architecture (Frontend in Next.js, Backend APIs in Node.js, MongoDB in a VPC) and integrated DNS/SSL via Route 53 to deliver secure, branded shopping experiences. Registered and managed the domain with Route 53 and ensured HTTPS-enabled transactions. Achieved fast DNS resolution and reliable cart and checkout experiences during traffic surges.
Part-time Technical Assistant | Support Engineer at Loctech Training Institute – Port Harcourt
December 31, 2024 - October 10, 2025
Managed database input, network configurations, and user access controls to ensure reliable access to course materials and resources. Installed, integrated, and tested hardware/software systems for seamless classroom operations. Provided VPN setup and troubleshooting for remote users to enable off-site learning. Assisted in firewall rule updates, port security, and DHCP/DNS management to strengthen data protection. Collaborated with cross-functional IT teams to resolve complex integration and security challenges, reducing downtime and improving reliability for learners and staff.

Education

Bachelor of Medical Laboratory Science at Madonna University – Elele, Rivers State
January 1, 2010 - April 1, 2015
Post Graduate Training in AWS Cloud Operations, Software Development, DevOps at Loctech Training Institute, Port Harcourt
April 1, 2021 - April 1, 2023

Qualifications

AWS Certified Cloud Practitioner
February 28, 2025 - February 28, 2028

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Retail, Computers & Electronics, Education, Other
    paper E-commerce website

    Dkikishop(https://www.twine.net/signin) is a full-stack e-commerce web application I designed and built using Next.js, React, and MongoDB for a real-world online retail system. It features dynamic product listings organized by categories, detailed product pages with size selection, and a fully functional cart system powered by React Context for state management. On the backend, I implemented API routes to handle product retrieval, order processing, and database interactions, along with Paystack integration for secure payments and transaction verification.

    Beyond the core shopping experience, I developed an admin dashboard that allows controlled product uploads, inventory management with quantity tracking, and automated stock updates after purchases. I also implemented order persistence and email notifications to both the admin and customers, including custom delivery logic with multiple service options. Throughout development, I resolved challenges around asynchronous data fetching, payment webhook validation, and maintaining consistency between frontend state and backend data, ensuring a reliable and scalable user experience.

    paper e commerce website

    an e-commerce website developed to aid online shopping and delivery to customers nationwide in nigeria. Equipped with payment platform for instant purchase and delivery details.24hours uptime, hosted on vercel and soon would be migrated to AWS . visit at https://www.twine.net/signin