Ohaeri Stephen

Ohaeri Stephen

Mentor
5.0
(4 reviews)
US$15.00
For every 15 mins
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Sessions/Jobs
ABOUT ME
Senior Software Engineer with over 8+ years experience.
Senior Software Engineer with over 8+ years experience.

Hello! I'm Ohaeri Stephen, a Senior .NET Engineer based in Nigeria.
With over 8 years of experience, I've successfully delivered 20 projects for clients like College Board and Adobe. My expertise spans .NET technologies, C#, REST APIs, Microservices, and PHP, Laravel, React, React Native and alot of other languages. I excel in leading teams, optimizing performance, and implementing robust security measures. I'm committed to continuous learning and delivering high-quality technological solutions. Let's build something amazing together.

West Central Africa (+01:00)
Joined May 2024
EXPERTISE
7 years experience

REVIEWS FROM CLIENTS

5.0
(4 reviews)
Henry Kiu
Henry Kiu
September 2024
Patience and understand your request....
Toika
Toika
June 2024
Ohaeri was willing to work through my problems and is very supportive. I do recommend him
Toika
Toika
June 2024
Thank you for keeping your patience with me
SOCIAL PRESENCE
GitHub
Vivo
C#
1
0
simple_shell
Background Context
C
1
0
Stack Overflow
1 Reputation
0
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0
EMPLOYMENTS
Senior Full Stack Developer
Holmen Consulting
2021-04-01-Present

• Developed different business classes and interfaces using .NET Framework with Object-Oriented
Programming Methodology.
• Col...

• Developed different business classes and interfaces using .NET Framework with Object-Oriented
Programming Methodology.
• Collaborated with cross-functional teams to design, develop, and implement Open Link solutions
within the .NET framework.
• Led the integration of Kafka for event-driven architecture, significantly enhancing data flow and
responsiveness.
• Responsible for configuring and managing CI/CD pipelines using Azure DevOps to automate
build, test, and deployment processes for.NET applications, ensuring rapid delivery and continuous
integration of code changes.
• Utilized the ASP.NET MVC Page Controller pattern to enhance individual page functionality,
facilitating input acceptance from page requests and invocation of requested actions.
• Proficient in utilizing Entity Framework for data access and management in .NET applications.
• Skilled in designing and implementing database schemas using Code-First or Database-First
approaches.
• Experienced in querying databases using LINQ (Language Integrated Query) and Entity SQL.
• Explored the capabilities of Azure Cosmos DB, a fully managed NoSQL and relational database
service provided by Microsoft Azure.
• The hands-on learning opportunity is invaluable for developers and database administrators who
want to become proficient in Azure Cosmos DB.
• Improved system reliability by implementing RabbitMQ for message queuing, reducing
downtime by 20%.
• Integrated RabbitMQ with ASP.NET Core microservices to enable seamless communication
between services.
• Actively participated in every phase of the project within an Agile methodology, including
iteration (Sprint) planning, daily stand-up meetings, iteration review, Sprint Demos, Retrospective,
etc.

Entity Framework
OOP
Azure
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Entity Framework
OOP
Azure
RabbitMQ
Apache Kafka
LINQ
Microservice architecture
ASP.NET MVC
Cosmos DB
.NET Framework
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Senior Full Stack Developer
Sterling Bank
2019-05-01-2021-03-01

• Spearheaded the development of a SaaS-based insurance claims processing system, leveraging
Spring Boot for backend services, res...

• Spearheaded the development of a SaaS-based insurance claims processing system, leveraging
Spring Boot for backend services, resulting in a remarkable 40% reduction in processing time.
• Led the end-to-end engineering of a real-time telematics system for heavy machinery, leveraging
C#, .NET, and .NET frameworks.
• Responsible for developing and maintaining SaaS applications for insurance policy management and
claims processing using C#, .NET, ASP.NET, and C++.
• Developed logical data models and physical data models capturing current state/future state data
elements and data flows using Data Modeling.
• Implemented a 'serverless' architecture using API Gateway, Lambda, and Dynamo DB, deploying
AWS Lambda Code from Amazon S3 bucket.
• Ensured that OAuth configurations were modular and easily updatable without requiring changes to
the underlying Microservices.
• Successfully implemented an interactive dashboard for policyholders using Angular, significantly
enhancing customer engagement and satisfaction.
• Collaborated effectively with AWS services, including Lambda functions, to develop serverless
applications, leading to a 30% reduction in infrastructure costs.
• Contributed to the collaboration on the migration of legacy systems to Azure cloud infrastructure,
leveraging Azure Functions for efficient serverless computing.
• Took the lead in designing and implementing a Microservices architecture for the inventory
management system, enhancing scalability and facilitating independent development and
deployment of services.
• Designed and implemented ASP.NET MVC and Angular web solutions.
• Developed secure web services using .Net, C#, XML/SOAP.

C#
C++
Amazon EC2
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C#
C++
Amazon EC2
Spring Boot
DynamoDB
AWS Lambda
Data modeling
API Gateway
ASP.NET
.NET Framework
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Senior .Net Developer
TM30 Global
2018-04-01-2019-04-01

• Engineered a real-time telematics system for heavy machinery, resulting in a significant 35%
optimization of equipment efficienc...

• Engineered a real-time telematics system for heavy machinery, resulting in a significant 35%
optimization of equipment efficiency.
• Designed robust Microservices-based solutions to effectively collect, process, and analyze
telematics data in real-time, utilizing C# and the .NET framework.
• Led the end-to-end engineering of a real-time telematics system for heavy machinery, leveraging
C#, .NET, and .NET frameworks.
• Conducted client-side validations utilizing JavaScript and .NET validation controls.
• Implemented business logic using C# and incorporated Object-Oriented Programming
functionalities.
• Designed ASP.NET application authentication using the .NET Framework, Model View Controller
(MVC), and IIS security models.
• Engaged in System Analysis and Design methodology as well as Object-Oriented Design and
development using OOAD methodology to capture and model business requirements.
• Integrated TypeScript seamlessly with Angular and React frameworks, leveraging advanced
TypeScript features like decorators and conditional types.
• Applied working knowledge of Model-View-View-Model (MVVM) & Model View Controller
(MVC) Pattern.
• Applied TypeScript's type annotations to enhance code readability and maintainability, ensuring
robustness and scalability in software solutions.
• Established and maintained robust CI/CD pipelines using tools such as Jenkins or Azure DevOps
to automate testing, build, and deployment processes.

C#
Angular
MVVM
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C#
Angular
MVVM
Jenkins
TypeScript
React
System design
JavaScript
CI/CD
Azure DevOps Server
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PROJECTS
College Board
2022
College Board is a notable not-for-profit organization in the United States that focuses on preparing students for college and beyond. He...
College Board is a notable not-for-profit organization in the United States that focuses on preparing students for college and beyond. Here's a comprehensive overview: • Mission and Governance: College Board is a member-led organization governed by an elected Board of Trustees, with guidance from national and regional assemblies. It aims to clear a path for all students to own their future through various educational programs. • History and Reach: Founded over 120 years ago, College Board reaches more than 7 million students annually, helping them transition from high school to college and career. • Programs and Services: The organization is known for pioneering programs like the SAT® and Advanced Placement (AP®), which expand educational opportunities and help students develop essential skills. They also offer BigFuture®, a program designed to assist students with college planning, financial aid, and career exploration.
C#
Git
Angular
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C#
Git
Angular
Entity Framework
Azure
Bootstrap
React
JavaScript
.NET Core
SQL Databases
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Credentia GIS
2020
This is an examination portal that maps invigilators to test centers based on their mileage from the centers for them to invigilate their...
This is an examination portal that maps invigilators to test centers based on their mileage from the centers for them to invigilate their candidates. The invigilators are paid according to the distance where they are mapped from.
C#
Microservices
.NET Core
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C#
Microservices
.NET Core
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