What are the major responsibilities of SEO Expert?

1. An SEO experts know all the two levels of optimization – on-page optimization and Off-page optimization.
2. An SEO expert is responsible for analyzing client’s goal and designing marketing plan that works best.
3. Works within the budget allotted by client for marketing campaign and other purchase.
4. It is SEO expert’s responsibility to protect the personal information provided by the client.
5. Decides on best domain name, Titles, Headings and sub-headings.
6. Using effective search engine keywords in relevant places within website should be taken care of by the SEO Expert.
7. Making changes in design, content and links as per requirements.
8. Using strategies that increase in-bound traffic.
9. Trying to achieve position in the first page of popular search engines.
10. Being up-to-date with the latest SEO news and methods such as Google’s Algorithm.
11. Should take part in online forums and SEO communities to interact with SEO leader.
12. To add blog pages if required and submit articles to directories for getting back-links, also try new methods that can prove beneficial.
13. Thoroughly monitor website performance and take necessary steps to improve traffic.
14. Technical issues such as 404 Error, Duplicate Content, problems related to XML and HTML sitemap, broken links etc should be rectified.
15. Should develop user and mobile friendly website to increase Click Through Rates (CTR) and improve search engine rankings.
16. Write catchy outline and unique content to grab viewer’s attention. Place them properly throughout the website and remove outdated ones.
17. Must work well with Content Management System such as Blogger and WordPress and simple coding like CSS, HTML, etc.
18. Periodic stats and analytical data given to client on website’s performance.
19. Use of Social Media and networks such as Facebook, Twitter, Digg, StumbleUpon, LinkedIn, YouTube etc in marketing plan.
20. To draw the customer’s attention, an SEO Expert should also create online ad campaigns, and press releases if demanded by client.
21. To use digital marketing channels and techniques to increase brand awareness.
22. Monitor Social Media performance and take corrective measures to improve like creating Fan Pages etc.
23. Client should be protected against any malware or website security issues.
24. Monthly review of the work done on website and progress till date should be given via personal meeting with client.
25. Most importantly he should be able to generate traffic, turn them into leads and convert those leads into sales.

The responsibilities of an SEO expert can be quite unique based on the needs of each business or enterprise. Note that, there is technical SEO specialization and on page/off page optimization. The skills needed by a technical SEO expert are very different from those of the other though it makes no harm having both skills.

In a nutshell, you will have the following

• Research and competitor analysis
• Keeping up to date with Google's algorithm changes and updates focusing on how they impact on business
• being creative and identifying ways to different when creating content and in a way that will be impactful to target audiences
• Being able to work with javascript, edit website using HTML and CSS
• Creative and innovative to keyword research and implementation backed by evidence 
• Running tests - split and multivariate
• Ability to build rapport with external and internal coordinators
• Ability to be creative in building links that will last 
• Ability to review, analyze and interpret market trends
• Ability to understand and build on mobile UX
• Ability to implement best practices on on-page optimization
• Ability to produce content, proofread, edit to implement without on-page without losing the quality
• Ability to break down industry jargon in a way a lay-person will understand without difficulty (C-suits)
• Ability to develop SEO, Social and content strategy for various user-types
• Ability to remain an expert in any industry (optimizing for e-commerce and charity fund raising is completely a different ball game)
• The ability to see the bigger picture
• Ability to manage SEO budgets in way that KPI's are achieved
• Ability to manage projects like a pro
• Ability to translate business goals into action
• Ability to interpret data, user insights and make good recommendations to drive the business forward (digital analytics)

However, this is neither an exhaustive list but simply some of the things that SEO experts do since they are "experts". These will differ from the responsibilities of an SEO Executive or coordinator.

Hope this helps

Mainly optimize the site for search engines, track, report, and analyze website analytics to get higher ranking of the site and be found by the leads.

A SEO expert reviews, analyses and implements changes to websites so they are better optimised hence more visible on search engines. This is done mainly through prioritising and developing content to be engaging enough to be seen.

Basic responsibilities would be

• Website audit
• keyword research
• check onpage issues
• off page (link building) campaign through defined strategy
• Set the KPIs and achieved within the timelines
• Track rankings and generate KPI reports