It is very clear what sort of contract you are going to get. You will be taken on as flexicrew for one year on an hourly rate, before joining the Company proper as a bona fide easyJet employee. Thereafter you do one year a Second Officer on £38k and no allowances, two years as a First Officer on £44,901 + around £8,270 sector pay and then after 2 years in rank (4 years since you joined as flexicrew) you become a Senior First Officer on £55,120 + £8,270 sector pay. Those FO/SFO jobs can end up as 75% salaries depending on which base you go to, as not all bases can offer 100% contracts. All contracts will be get the usual loss of licence, pension contribution of 7% etc. It is only when you become an SFO that you will be guaranteed the 5/3/5/4 roster pattern instead of a random roster. Also the promotions to the different ranks have some total flying hours experience limits attached to them which in the vast majority of cases would not be an issue.
Once you become a Captain, your basic salary is £90,012 (90% of that for the first 6 months) and your sector pay is £26.20 per sector (the Company assumes 480 sectors a year) making the total sector pay around £12,576. In addition you get a 'loyalty bonus' of 5% of basic after 2 years, 10% after 5 years and 15% after 10 years. Those years are backdated to the day you join as an SO, so if it took you 8 years to be come a Captain you would kick in straight away to the 10% loyalty bonus. Again, the Company pays 7% of basic + loyalty pay into your fund each year. In addition there are various performance payments of 2 weeks salary depending on Company success - for a Captain that is capped at £3k and has been paid the last 2 years and probably this year too. Finally, if you become a Training Captain, there are various 'levels', all of which are pensionable (i.e. your 7% includes your Training Captain uplift). You get 12.5% for a Line Trainer, 15% for a TRI, 17.5% for a TRE and 20% for an Airborne Base Trainer.