How to become a software engineer

1. 1Learn math and start programming in high school

   Time: 4 years (high school)Sources 1

   Take algebra, precalculus and, if offered, calculus and AP Computer Science. More important than any single class is writing real programs: a game, a website, a tool for a club. Free online courses and open-source documentation let you learn a first language such as Python or JavaScript. Projects you can show also help with college applications and early internships.

2. 2Earn a bachelor's degree in computer science or a related field

   Time: 4 yearsCost: $10,300/yr median public in-state tuition (computer science)Sources 1, 3, 8, 4, 6

   Computer science is the most common degree; software engineering, computer engineering, math and information systems also lead to developer jobs. Look for coursework in data structures, algorithms, operating systems, databases and a team-based software project. ABET's Computing Accreditation Commission accredits computer science programs and its Engineering Accreditation Commission accredits software engineering programs; accreditation is a quality signal but not a hiring requirement.

3. 3Get internships and build a portfolio

   Time: Summers during college, or 3-12 monthsCost: — (internships are usually paid)Sources 1

   BLS points to internships, for example at a software company, as a way to get real development experience while still in college. Many summer internships recruit during the fall before. Alongside internships, keep a public portfolio: projects on GitHub, contributions to open-source code, or apps with real users. These give interviewers something concrete to ask about.

4. 4Prepare for technical interviews

   Time: 1-6 monthsSources 1

   Hiring usually includes coding problems on data structures and algorithms, a take-home or live project, and for experienced roles a system design interview. Practice explaining your reasoning out loud while you code, and review the language you are strongest in. Many candidates apply to dozens of companies; referrals from internships and classmates improve response rates.

5. 5Start as a junior engineer and keep learning

   Time: First 2-5 yearsCost: Optional certification feesSources 1, 5

   New engineers learn the team's codebase, tooling and review process, and take on larger features as they prove reliable. BLS stresses that developers must keep learning new tools and languages throughout their careers. Optional certifications can help in cloud-heavy roles: AWS Certified Developer – Associate, for example, costs $150, has 65 questions in 130 minutes and recommends a year of hands-on AWS experience.

Programs, tuition and graduates’ earnings

U.S. Department of Education, College Scorecard (most recent cohorts, released 2026-10-15). Scorecard groups programs by 4-digit field, so a row can include related programs. Tuition is the median published undergraduate tuition and fees of the colleges offering the program (shown only for undergraduate credentials); debt is the median of programs’ median federal loan debt at completion; earnings are the national median for the field and credential four years after completion.

Requirements differ by state. Check your state’s rules in the CareerOneStop License Finder (U.S. Department of Labor) before you enroll.

Problem decomposition

Large features only get built when you can split them into small, testable pieces that teammates can review.

Reading other people's code

Most work happens inside existing systems, so understanding unfamiliar code quickly matters more than writing new code fast.

Debugging

Finding why a service fails only in production, or only for some users, takes patient use of logs, tests and reasoning.

Written communication

Design documents, pull request descriptions and incident reports are how decisions are made and remembered on engineering teams.

Continuous learning

Languages, frameworks and cloud services change every few years, and engineers who keep up stay employable.

O*NET 31.0 rates these skills as most important for the occupation: critical thinking, reading comprehension, active learning, active listening, writing.

Training cost

$41.1K–$41.4K

Before financial aid

Time

4 years

Typical path

Median pay

$135,980

All US jobs: $50,980

Payback once qualified

Under 1 year

Pay above the all-jobs median vs. cost

Low: 4 years x College Scorecard median public in-state tuition for general computer and information sciences bachelor's programs, $10,280 = $41,120. High: 4 years x the computer science bachelor's median, $10,300 = $41,200, plus one optional AWS Certified Developer – Associate exam at $150. Not included: fees, a laptop, housing and living costs, or private-college tuition, which can be several times higher. Median federal loan debt for computer science bachelor's graduates is $20,500.

Rough guide only: ignores taxes, aid, interest and earnings given up during training. How we calculate it.

• Senior, staff or principal engineer

  Comes from leading larger projects, mentoring others and owning design decisions across teams; no extra degree is required.

• Engineering manager or IT project manager$102,320 median

  BLS notes developers can move into project management or computer and information systems management, overseeing the people and schedule rather than writing most of the code.

• Data scientist$120,230 median

  Requires stronger statistics and machine learning, often from a master's degree or focused coursework.

• Cybersecurity analyst$129,180 median

  Developers with secure-coding experience can move into security, often adding certifications in the field.