Cousant Connect has published a report titled “The Nigerian IT Jobs Report, 2019”. It examines where job opportunities are in the Nigerian IT sector: “The demand for IT skills in Nigeria is continually increasing with many more sectors of the economy now embracing technology. However, there is still a lack of information on where the opportunities lie in the IT Jobs market and average salary ranges. This IT Jobs report gives deep insights into the skills that are in high demand, the average salary for each industry and skill set.”
Looking at the data, mobile app developers seem to be running the market on wages especially within 3-5 years of experience.
Some plots from the report which can be downloaded here.