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David Mwanyama

David Mwanyama

Data Analyst Sales Customer service

Talent
NairobiMember since April 24, 2026
SQLRPythonPower BIAdvanced ExcelProblem SolvingTime ManagementTeam CollaborationCustomer ServiceVerbal CommunicationWritten Communication
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SQLRPythonPower BIAdvanced Excel

About

I am an optimistic and passionate professional with experience in sales, marketing, data analysis, and customer service. Equipped with a strong background in mathematics and data analysis, I possess keen attention to detail, along with critical problem-solving and effective communication techniques, which enable the identification and implementation of impactful solutions to drive results. I am goal-oriented and a team player, advocating for personal and collective growth of the organization.

Experience

Telesales Representative at POA Internet (2025-04 – Present)

Making outbound calls to promote and sell internet services to prospective customers while handling inbound queries and maintaining CRM records.

  • Making outbound calls to promote and sell internet services to prospective customers.
  • Handling inbound customer queries and providing detailed product and service information.
  • Updating CRM systems and maintaining accurate records of customer interactions and sales activity.
  • Following up on leads and upselling to increase revenue and customer retention.

Contact Center Agent at CCI Kenya (2024-03 – 2025-03)

Delivered exceptional customer service and educated customers on products and services.

  • Delivered exceptional customer service, achieving a 95% satisfaction rate.
  • Educated customers on products and services, leading to a 15% increase in upsell revenue.
  • Ensured accurate resolution of network issues, enhancing customer retention by 20%.
  • Maintained strict adherence to data privacy regulations.

Center Clerk (Ngara Girls High School) at KNEC (2022-12 – 2023-12)

Validated and coordinated movement of examination scripts with 100% accuracy.

  • Validated and coordinated movement of 1,000+ scripts with 100% accuracy.
  • Ensured integrity of results, enhancing the credibility of the examination process.

Intern (Benefits) at NHIF (2022-07 – 2022-09)

Processed and validated E-claims weekly while generating detailed reports for claims management.

  • Processed and validated over 300 E-claims weekly, maintaining a 98% accuracy rate.
  • Generated detailed weekly reports to support decision-making in claims management.

Data Clerk at Jackben Enterprises (2020-04 – 2021-01)

Performed accurate data entry and record maintenance while developing daily reports.

  • Performed accurate data entry and record maintenance, ensuring smooth operations.
  • Developed daily reports that streamlined decision-making, improving team productivity.

Education

Certificate in Data Analysis (Excel, SQL, Power BI) – ALX Africa (2024-09 – 2024-09)

Bachelor of Technology in Applied Statistics – Technical University of Kenya (2021-01 – 2023-12)

Certificate in Fundamentals in Digital Marketing – Google Digital Skills for Africa (2023-04 – 2023-04)

Certificate in Data Analytics Tools (R, SPSS, Python, SQL, Advanced Excel) – University of Nairobi (2022-04 – 2022-04)

Skills

Data Analyst Sales Customer service

Reviews

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