Summary
David M. is a highly skilled Senior Developer with eight years of hands-on experience, specializing in Java development across industries such as insurance, finance, and e-commerce. He has a strong background in designing enterprise-grade applications and robust payment gateways, as well as casino-related systems. David is proficient in core Java (versions 1.7, 1.8, 17, 21), Spring Framework (including Spring Boot, MVC, Data JPA, and Security), Hibernate, JPA, JSF, JSP, and web frameworks such as Angular, React, and Vue. He has developed secure RESTful APIs with JAX-RS and SOAP with JAWS, and built microservices architectures featuring Kafka and IBMQ for messaging. David is experienced with databases like MySQL, Oracle, MongoDB, Postgres, MariaDB, Couchbase, and Elasticsearch, as well as cloud and DevOps platforms such as AWS (Elastic Beanstalk, EC2, Redis, Key Vault, Secret Manager), GCP, Cloud Foundry, Docker, Kubernetes, Jenkins, Maven, Gradle, and GitHub/GitLab for CI/CD. He has utilized observability tools including Grafana, Kibana, OpenSearch, Loki, Tempo, and Prometheus, and has worked extensively with Agile Scrum, Scaled Agile Framework, and Test-Driven Development. David's skill set further extends to video streaming control protocols (TCP/IP, UDP, RTP, RTMP, Multicast, RTSP, DIAL, SSDP, HTTP), as well as front-end technologies like JavaScript, HTML5, CSS3, jQuery, and Bootstrap. He is recognized for his critical thinking, problem-solving, communication skills, and adaptability, making him a valuable asset to any technology-driven team.
Meet David M.
Assessment Scores
Great on Implement LRU Cache Algorithm, Difficulty Medium
Great on Real-Time Dashboard in React, Difficulty Medium
Great on Reverse Digits of a 32-bit Integer, Difficulty Easy
Great on Word Search in Grid, Difficulty Medium
Perfect on Validate Parentheses in a String, Difficulty Hard
Experience
WebDev pvt ltd
Java developer
Full-Time
Aug 2016 — Dec 2018
Managed deployments on Kubernetes and Docker containers
Implemented payment gateways and casino platforms
Technologies:
java
springboot
mysql
react
tomcat
aws
Africa Software Architects Pvt Ltd
Java developer
Full-Time
Jan 2019 — Apr 2020
Built and consumed RESTful APIs using Spring Boot and Hibernate
Integrated cloud-native solutions and microservices
Supported Agile delivery processes and CI/CD pipelines
Hands-on experience working with OIPA in the context of policy lifecycle management including configuration of business rules, product templates, and integration with external systems. I’ve also been involved in customizing OIPA for new insurance products and ensuring compliance with underwriting and claims workflows
Technologies:
Java
react
postgres
aws
rest apis
tomcat
VaultGroup Pvt Ltd
Software developer
Full-Time
May 2020 — Dec 2020
Designed and developed Spring Boot microservices with Kafka
Integrated cloud services and ORM with Hibernate
Managed deployments using Docker and Kubernetes
Technologies:
Java
react
angular
postgres
html
css
aws
kafka
Edson J Pvt Ltd
Software developer
Full-Time
Jan 2021 — Feb 2022
Created RESTful APIs and ORM management with Hibernate
Developed microservices with Kafka, Spring Boot, and cloud integrations
Deployed solutions to Kubernetes clusters in Azure/AWS
Technologies:
Java
React
mysql
postgres
html
typscript
css
kafka
Wonderlabz Pvt Ltd
Software developer
Full-Time
Mar 2022 — Present
Developing Livescore and Lithium App within the betting domain.
Designed and developed secure payment gateway integrations.
Built responsive front ends using Javascript, Angular (v10+) and react for Livescore and admin interfaces
Implemented microservices using Spring Boot, communicating via Kafka
Deployed services in Kubernetes clusters on Azure and AWS
Maintained RESTful APIs and Hibernate ORM
Integrated observability using Grafana (Loki, Tempo, Prometheus), OpenSearch, and Kibana
Worked with AWS services like Redis, EventHub, and Key Vault
Used GitHub and GitHub Actions for CI/CD pipelines
Applied Flyway for DB migrations
Technologies:
Java
angular
react
mysql
postgres
html
css
aws
kafka
Projects
Sumer is a full-stack e-commerce platform designed to provide a seamless online shopping experience for customers while enabling efficient product, order, and payment management for administrators and vendors. The system supports end-to-end online retail operations, including product browsing, secure checkout, payment processing, inventory tracking, and order fulfillment.Core Features 1. Customer Experience User registration and authentication (JWT / OAuth2 secured) Browse products by category Advanced product search and filtering Product detail pages with images and descriptions Shopping cart management Secure checkout and payment integration Order tracking and history Wishlist functionality 2. Product & Inventory Management Admin dashboard for product CRUD operations Category management Stock level tracking Inventory alerts for low stock Bulk product upload support 3. Order Management Order creation and confirmation Real-time order status updates (Pending, Paid, Shipped, Delivered, Cancelled) Invoice generation Refund handling Order analytics and reporting 4. Payment Integration Integration with multiple payment gateways such as: Stripe PayPal Ozow Secure transaction handling Payment status verification Webhook processing for asynchronous payment confirmation 5. Architecture The Sumer platform follows a microservices-based architecture: API Gateway User Service Product Service Order Service Payment Service Notification Service Service discovery via Eureka Centralized configuration management Asynchronous messaging using RabbitMQ MySQL for persistent storage Dockerized deployment Frontend is built using: React or Angular for dynamic UI RESTful API integration Real-time updates via WebSocket (for notifications and order status) Backend is implemented using: Spring Boot (Java 17+) RESTful APIs Role-based access control (RBAC) Secure token-based authentication 6. Security OAuth2 authentication JWT authorization Encrypted password storage (BCrypt) HTTPS communication Role-based access control (Admin, Customer, Vendor) 7. Scalability & Performance Horizontally scalable microservices Stateless services Caching layer (e.g., Redis) Load-balanced deployments Cloud-ready (AWS / Azure) Business Value Sumer enables: Businesses to sell products online efficiently Customers to shop securely and conveniently Administrators to manage operations centrally Real-time analytics for better decision-making
Education
Bachelor of Science
2011 - 2016
National University of Science and Technology
Bulawayo, Zimbabwe
