Before an app reaches your phone or a banking website goes live, someone has checked that the login works, the payment goes through and the page does not break when you enter something unexpected. That someone is a software tester, often called a QA (Quality Assurance) engineer.
Testing is one of the most accessible ways into the IT industry. It suits graduates from many backgrounds, rewards careful thinking and has a clear growth path from manual testing to automation. This guide explains both stages and how to move from one to the other.
Key takeaways
- Software testers find and report problems before users experience them.
- Manual testing builds the thinking skills that automation depends on.
- Selenium WebDriver with Python automates repetitive browser tests.
- Robot Framework helps organise and run automated test suites.
- Automation skills generally lead to better growth than manual testing alone.
What a software tester does
A tester's job is to find problems before customers do. That means reading requirements, working out what should happen in different situations, trying those situations on the application and reporting anything that does not behave as expected. A good tester thinks like a curious, slightly stubborn user: what happens if I click twice, leave a field empty or enter a date in the wrong format?
Testers work closely with developers, business analysts and project managers. When they find a bug, they write a clear defect report with steps to reproduce it, the expected result, the actual result and supporting screenshots. After the developer fixes it, the tester checks the fix and makes sure nothing else broke in the process.
The role is not about blaming developers. It is about protecting the product and the people who will use it.
Manual testing: the foundation
Manual testing means checking the application by hand, without scripts. It is where most testers start, and it builds the thinking skills that automation depends on. You learn how software is built in stages (the software development life cycle), how testing fits into each stage, and the different kinds of testing – functional, regression, smoke, sanity, integration and user acceptance testing.
Core day-to-day skills include writing test scenarios and test cases, preparing test data, executing tests, logging defects in a tracking tool and reporting progress. You also learn techniques that help you choose good test inputs, such as checking values at the edges of an allowed range rather than only typical values.
Even in teams with heavy automation, manual testing never fully disappears. New features, usability checks and exploratory testing still need a human eye.
- Understand requirements well enough to know what 'correct' looks like.
- Write test cases that someone else could follow without asking you questions.
- Report bugs with clear steps, expected and actual results, and evidence.
- Retest fixes and run regression checks on related features.
- Communicate calmly and precisely with developers and managers.
Why move to automation
Imagine a website with two hundred test cases that must be re-run every time developers release a new version. Doing that by hand every week is slow, tiring and prone to mistakes. Automation testing uses code to perform these checks automatically, so the same tests can run quickly and consistently whenever needed.
Automation does not replace testers; it changes what they spend time on. Repetitive regression checks go to scripts, and testers focus on designing better tests, exploring new features and investigating failures. Because automation needs programming skill, automation testers are generally in higher demand and tend to earn more than purely manual testers as they gain experience.
What you learn in Selenium automation
Selenium is a widely used open-source tool for automating web browsers. With Selenium WebDriver, you write code that opens a browser, visits a page, finds elements such as text boxes and buttons, types, clicks and checks the results. Livewire's Software Testing (Selenium) course teaches this with Python, using the PyCharm IDE.
The course moves from setting up Python and WebDriver to launching Chrome, Firefox and other browsers, and then to finding elements using locators such as ID, name, class name, link text, XPath and CSS selectors. You learn to handle check boxes, radio buttons and text boxes, navigate back and forward, perform mouse actions like drag and drop, hover, right-click and double-click, and deal with alerts, pop-ups and file uploads and downloads.
Later topics include implicit and explicit waits, scrolling, switching between frames, reading dynamic web tables, taking screenshots, checking for broken images and reading tooltips. The course finishes with Robot Framework – a keyword-driven framework used to organise and run automated tests – and a real-time Selenium project.
A practical path from manual to automation
Do not rush straight into Selenium code. Testers who skip the fundamentals often write scripts that pass but test the wrong thing. First, get comfortable designing test cases and reporting bugs. Next, learn basic Python – variables, conditions, loops, functions and a little object-oriented programming. Only then start Selenium, beginning with simple scripts and building up to a structured framework.
A good practice project is to take a public demo website and create a small test suite: login with valid and invalid details, search, add to cart, fill a form and log out. Write the manual test cases first, then automate them, then run them with Robot Framework and produce a report. This single project shows an interviewer both halves of the job.
- Step 1: Learn testing concepts, test case design and defect reporting.
- Step 2: Learn Python basics up to functions and simple classes.
- Step 3: Automate simple browser actions with Selenium WebDriver.
- Step 4: Master locators, waits, frames, pop-ups and web tables.
- Step 5: Organise tests with Robot Framework and build a complete project.
Skills that help you stand out
Beyond Selenium, a few extra skills make a noticeable difference. Basic SQL helps you check whether data was saved correctly in the database behind an application. Git lets you store and share your test code with the team. A little knowledge of how web pages are built – HTML elements and attributes – makes writing reliable locators much easier.
Soft skills matter too. Testers who write clear reports, ask good questions in requirement meetings and stay calm near a release deadline quickly earn the trust of their teams.
Jobs, growth and indicative salaries
Common entry titles include Software Tester, QA Engineer, Test Engineer, Automation Test Engineer and Test Analyst. Testing teams exist in IT services companies such as TCS, Infosys, Wipro, HCLTech and Cognizant, in product companies and startups, and in banking, insurance, healthcare and e-commerce firms. Chennai and Bengaluru have many openings, and some roles offer hybrid work.
As an indicative guide for 2025–26, fresher testers with automation skills often start around ₹2.5–4.5 LPA, with purely manual roles sometimes starting lower. With three to five years of experience, ₹5–9 LPA is common, and senior automation engineers and test leads can earn more. All figures vary by company, city, skills and experience.
Growth paths include senior automation engineer, test lead, QA manager, and specialised areas such as performance or security testing. Some testers also move into development or business analysis because they understand the product so well.
Learning software testing near Vellore
The Software Testing (Selenium) course runs at the Katpadi, Vellore and Ranipet centres operated by CareerKraft, in classroom, online or hybrid mode depending on trainer availability. If you are new to programming, the counsellor may suggest a short Python course first so that the automation part feels comfortable.
Placement support includes help with your resume, mock interviews focused on testing questions and job leads.