You will need good levels of academic qualifications and practical knowledge in the sector to be successful as a computer games developer. There are different jobs within the computer games development sector. A degree or other qualification in computer games design or development can get you there. Degree in computer science, software engineering, animation, graphic design, multimedia, etc can also help. In most cases, you can find jobs while you are still studying multimedia designing, graphic designing or similar programs. After you join a developer company, you can further your experience and learn the techniques and skills you need.

For game tester, you don't need any particular qualifications. Your extensive experience in playing games is all what you need. You also should be able to point out sticky areas. There are workshops and short term courses that you can take even as you are working. You can also keep yourself up to date to the latest technological developments and innovations by subscribing to magazines and by subscribing to RSS feeds/email newsletters by the websites that deal with latest technologies in the sector