What does a software engineer actually do, and what skills do you need?
A software engineer works out what users need, designs and builds software that meets it within time and cost limits, then tests, fixes and improves it. To get hired, show shipped work: a system you changed, a bug you traced, and a design trade-off you can explain in plain words.
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What does a software engineer do all week?
A software engineer's week is mostly design, building and fixing. O*NET groups the job under Software Developers (O*NET 15-1252.00), and its core tasks include:
- Analyze user needs and software requirements to determine feasibility of design within time and cost constraints.
- Modify existing software to correct errors, adapt it to new hardware, or upgrade interfaces and improve performance.
- Develop or direct software system testing or validation procedures, programming, or documentation.
- Confer with systems analysts, engineers, programmers and others to design systems and to obtain information on project limitations and capabilities, performance requirements and interfaces.
Which skills do employers test software engineers for?
Employers test software engineers on whether they can build and change working software, not on how many languages they list. Expect questions on a system you designed, a defect you fixed, and how you tested the change.
O*NET's technology list for Software Developers includes AJAX, Amazon DynamoDB and Amazon Elastic Compute Cloud. Learn the stack of the companies you target; the habits of testing and documenting carry across every stack.
Which job titles should a software engineer search for?
Software engineer roles are posted under many titles. O*NET records all of these for the same occupation, so search them together:
- Software Developer
- Software Development Engineer
- Application Developer
- Developer
- Software Architect, for senior roles
How do people use AI in software engineering work?
0.35% of sampled Claude.ai conversations in May 2026 were about the tasks of the O*NET occupation behind this role, according to the Anthropic Economic Index. In those conversations, 60.79% asked Claude to complete the task directly (automation) and 39.21% worked with it iteratively (augmentation).
The numbers describe how people used Claude, not whether software jobs are shrinking. In interviews, be ready to explain how you check code an assistant wrote before you ship it.
Where can a software engineer check pay?
Software engineer pay is not a single band in the itszia.ai salary snapshot. The closest published pages are Backend Engineer and Full Stack Engineer, linked from this page; pick the one nearest the work in the job description.
Frequently asked questions
Is a software engineer the same as a software developer?
O*NET files Software Engineer under the Software Developers occupation (O*NET 15-1252.00), and most employers use the titles interchangeably.
Do software engineers need a computer science degree?
Many employers ask for a degree, but interviews test shipped work and problem solving. A portfolio of systems you built and changed carries weight with or without the degree.
Where this data comes from
- O*NET 31.0 DatabaseThis page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. O*NET® is a trademark of USDOL/ETA. EmployLabs has modified all or some of this information. USDOL/ETA has not approved, endorsed, or tested these modifications.
- Anthropic Economic Index, release_2026_06_26 (claude_ai, global, soc_occupation, May 2026)Anthropic Economic Index (Anthropic), data released under CC BY. Usage share is the share of sampled Claude.ai conversations classified to this occupation; the automation/augmentation split describes how those conversations used Claude. Neither measures the labour market.