Open to opportunities

OLUWASEGUN JOSEPH

@oluwasegunjoseph

Message

Data-driven Application Support and Data Analyst with strong reporting and frontend skills.

Nigeria

Message

What I'm looking for

I seek a client-focused role leveraging data analysis and application support to improve workflows, provide training, and deliver actionable BI insights.

I am a dependable, client-facing Application Support Analyst and Data Analyst with hands-on experience collecting, cleaning, querying, and visualizing data to produce actionable reports. I have optimized data collection and reporting pipelines using advanced Excel functions, SQL (SSMS, PostgreSQL), Power BI and Tableau, and delivered measurable improvements in workflows and cost reduction for logistics operations.

I also bring frontend development experience (HTML, CSS, JavaScript, React) and strong customer-service skills, having trained users, provided 24/7 application support, and improved client retention. I consistently translate client requirements into technical configurations, implement and maintain applications, and communicate effectively to drive adoption and operational improvements.

Experience

Work history, roles, and key accomplishments

Current

Application Support Analyst

Current

Piis Limited

Nov 2019 - Present (5 years 11 months)

Optimized data collection and reporting processes using Excel and SQL, delivered Power BI/Tableau visualizations for budgeting and operations, and provided 24/7 application support that improved client retention by 86%.

SQL MS Excel Power BI Tableau)Application Support User Training Requirements Gathering Data Cleaning Tableau

Front-end Web Developer

Stutern

Jan 2019 - Sep 2019 (8 months)

Built responsive web applications using HTML, CSS and JavaScript and collaborated with design and client services to deliver deadline-driven features including an IoT tracking app prototype using React.

HTML CSS JavaScript React Bootstrap Responsive Design

Inbound Customer Service Rep

MTN

Oct 2015 - May 2016 (7 months)

Handled high-volume inbound calls (150+/shift) to provide product/service support and navigation for SIM re-registration, contributing to 77% customer compliance during the campaign.

Customer Service Call Center Operations Phone Communication Knowledge Management Data Entry

Marketing Executive

First City Monument Bank

Nov 2014 - Oct 2015 (11 months)

Planned and executed targeted marketing campaigns and developed customer onboarding databases, increasing customer acquisition by 57% and raising company exposure and sales.

Marketing Campaigns Customer Acquisition Database Management Lead Generation Stakeholder Engagement Market Research