FEATURED PROJECT

Customer Churn & Retention Intelligence — Jumboline Optical Networks

7,043

Customers

71.16 %

Peak Churn

182

Critical Customers

19.18%

Revenue Exposed

40% → 12%

With Levers

Challenge: Jumboline was losing over a quarter of its customers annually, but leadership lacked visibility into who was leaving, why they were leaving, and where the revenue risk was concentrated.


Action: Built an end-to-end churn analysis across 7,043 customer records, using Python to clean and validate the data, PostgreSQL to structure the analysis, and Power BI to deliver a six-page interactive dashboard the retention team could use for ongoing monitoring.


Key Findings:

  • Compounding Risk: Identified four warning signs that, when present together, were associated with a 71.16% churn rate.

  • Revenue at Risk: Flagged 182 active customers showing all four risk factors and 782 showing three or more, together representing 19.18% of active monthly recurring revenue.

  • Retention Opportunity: Customers with neither automatic payments nor protective add-ons churned at 40.4%, versus just 11.7% among those with both.


Business Impact:

  • Early Warning: Gave the retention team a self-service workflow to identify high-risk customers before they churn.

  • Targeted Retention: Enabled the team to prioritize outreach by risk pattern, focusing on the customers representing the greatest potential revenue loss.

View on GitHub

LINDA NYAKASI

Data Analyst & Analytics Engineer

I build analytics pipelines that bridge the gap between technical data and executive action using SQL, Python, dbt, and Power BI for distributed teams worldwide

About Me

I am a Data Analyst & Analytics Engineer with a proven track record of turning messy, fragmented data into structured, reliable insights that support better decisions. I work end-to-end, from understanding the question and validating the data to uncovering patterns, building models and dashboards, and translating findings into clear recommendations.


Whether I'm using SQL, Python, dbt, Power BI, or DAX, I focus on more than producing numbers. I connect technical detail into business context by asking: What is happening? Why is it happening? And what should the business do next?


My Approach:

  1. Validate before visualizing: I make sure the data is reliable before building conclusions around it.

  2. Insight only counts if it's actionable: I turn findings into something a stakeholder can actually use.

  3. Ask early, adjust often: I challenge assumptions early and refine the analysis as the business question becomes clearer.

Skills

Python

SQL

dbt

Excel

Power BI

Pandas

Seaborn

Looker Studio

Create a free website with Framer, the website builder loved by startups, designers and agencies.