In general, the maximum age for software engineer or software developer to retire is 60 years. However, this is just a convention and there is no age-limit set or mandated in the software industry.

Retirement age is often a personal decision based on factors such as financial stability, health status, personal interests, and life goals. In some countries, the typical age for retirement ranges from 60 to 65, but this isn't specific to the software engineering profession.

The tech industry in general is known for its flexibility, and many software engineers continue working past traditional retirement ages, whether as full-time employees, consultants, or by starting their own companies. Some may also choose to shift into mentoring, teaching, or other roles within the industry.

However, it's worth noting that age discrimination can be an issue in the tech industry, making it sometimes more difficult for older software engineers to find new positions.

As the industry evolves, organizations are becoming increasingly aware of the value that experienced professionals bring to the table, and there's a growing emphasis on diversity, including age diversity, in tech workplaces.