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Developers in Sierra Leone cluster in Colombo, Galle, Kandy and Matara. City counts cover every indexed developer there, not only the ones using MongoDB, so treat them as where the country's engineering population sits rather than a count for this skill.
MongoDB developers in Sierra Leone most often pair it with Java (100%), JavaScript (100%) and HTML (88.5%).
Developer cities in Sierra Leone
All indexed developers per city, across every skill.
- Colombo1,043
- Galle134
- Kandy126
- Matara91
- Gampaha81
- Kurunegala45
- Malabe41
- Kegalle32
- Panadura32
- Kalutara29
Counts are developers in the indexed profile set.
Other skills hired in Sierra Leone
Each links to the same country breakdown for that technology.
- JavaScript1,672
- HTML1,432
- Java1,355
- Python1,107
- TypeScript1,106
- CSS888
- PHP709
- Jupyter564
- C++493
- C#463
- Dart352
- C297
- Kotlin275
- Bash / Shell227
Counts are developers in the indexed profile set.
What MongoDB developers in Sierra Leone also use
Share of this group who also work with each technology.
- Java130 · 100%
- JavaScript130 · 100%
- HTML115 · 88.5%
- Node.js110 · 84.6%
- React110 · 84.6%
- CSS105 · 80.8%
- TypeScript105 · 80.8%
- Python100 · 76.9%
- Express95 · 73.1%
- Tailwind CSS75 · 57.7%
- JWT / Auth70 · 53.8%
- PHP70 · 53.8%
Counts are developers in the indexed profile set.
What MongoDB developers in Sierra Leone look like
Measured across the profiles in this group, not self-reported.
- Median public contributions, last 12 months
- 213
- Median public repositories
- 43
- Median followers
- 18
- Have a linked LinkedIn profile
- 84.6%
- Flagged as open to work on GitHub
- 50%
Years of experience
- 0–2 years46%
- 3–5 years27%
- 6–9 years27%
Shares of the profiles in this group where experience could be derived.
Sample profiles from Sierra Leone
Real indexed developers, reduced to ranges and derived labels so no individual is identifiable.
- Contributions / year
- 100–250
- Public repositories
- 20–35
- Followers
- 10–25
- Contributions / year
- 100–250
- Public repositories
- 75–100
- Followers
- 50–100
- Contributions / year
- 500–1,000
- Public repositories
- 20–35
- Followers
- 10–25
- Contributions / year
- 0–50
- Public repositories
- 10–20
- Followers
- 25–50
- Contributions / year
- 0–50
- Public repositories
- 75–100
- Followers
- 50–100
- Contributions / year
- 50–100
- Public repositories
- 35–50
- Followers
- 50–100
Figures are shown as ranges and identifying details are removed. Full profiles, including GitHub handles and contact details, are available to signed-in users.
Frequently asked questions
How many MongoDB developers are there in Sierra Leone?
109 developers based in Sierra Leone show MongoDB in their public GitHub work, which is 0.3% of all 31,962 MongoDB developers in the index.
Which cities in Sierra Leone have the most developers?
Colombo (1,043), Galle (134), Kandy (126), Matara (91) and Gampaha (81). These are counts of all indexed developers in each city.
How active are MongoDB developers in Sierra Leone?
The median developer in this group made 213 public contributions in the last year across 43 public repositories, with a median of 18 followers.
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