Will AI replace junior software developers?

All of the work as the job is listed today, with a person checking it. AI could take on about 100% of the working time in a typical junior software developer job today. A person spends about 31% of the time checking its work.

Junior software developer at work

AI could take on all of the listed work, with a person checking it.

Needs a person: 0%A person checking AI: 31%AI alone: 69%

The bracket under the bar is the evidence range for the share AI could take on: 57 to 100%. One end comes from how well AI did each responsibility in real use, or a second rating where that isn't measured. The other is our figure, which also follows research across the industry.

8 responsibilities in a typical junior software developer job. Median pay $105,210 a year in the U.S. (BLS, May 2025).

Still needs a person

By our scores, none of the listed responsibilities needs a person to do it. A person spends about 31% of the time checking its work.

AI can do or help with

  • Fix, adapt and speed up existing code AI can do it
  • Write tests and technical documentation AI can do it
  • Pull and analyze system data AI can do it
  • Design software using models and data AI helps
  • Recommend and plan new or changed systems AI helps
  • Monitor systems against their specs AI helps

The biggest responsibilities on each side, ranked by a person's time on the left. "AI helps" means AI takes on part of the work, or most of it with a person checking what it produces, so one can show on both sides. See all 8, with the reason for each and the cost of handing them to AI.

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Questions people ask

Will AI replace junior software developers?

All of the work as the job is listed today, with a person checking it. AI could take on about 100% of the working time in a typical junior software developer job today. A person spends about 31% of the time checking its work. That is a split of the work, not a forecast of jobs lost.

Which parts of the job can AI do?

The biggest ones AI can do or help with: fix, adapt and speed up existing code, write tests and technical documentation, pull and analyze system data, design software using models and data, recommend and plan new or changed systems, monitor systems against their specs.

Which parts still need a person?

By our scores, none of the listed responsibilities needs a person to do it. A person spends about 31% of the time checking its work.

How is this measured?

The U.S. Department of Labor lists 17 responsibilities for this job (O*NET 31.0), and the split covers the 8 people in it do today. Each is scored on 4 questions: can AI do it, does it get it right, must a person sign for it, and do people need to deal with a real person. The split is weighted by how much of the job each responsibility takes up. The evidence range for the share AI could take on is 57 to 100%. One end comes from how well AI did each responsibility in real use, or a second rating where that isn't measured. The other is our figure, which also follows research across the industry. Scores version 0.8.5, updated November 10, 2026.

Responsibilities from O*NET 31.0 (U.S. Department of Labor). Pay from the Bureau of Labor Statistics, May 2025. Scores are calibrated to published research and updated every month. How it works.

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