Syntel Europe Limited holds a valid UK sponsor licence and is listed on the Home Office Register of Licensed Sponsors, which means they are authorised to sponsor UK Skilled Worker visas, the route that replaced the old Tier 2 (General) visa. A licence doesn't mean they are hiring with sponsorship right now — that depends on their current business needs.
No recent data: no visa issuance shows up for them in Home Office records. They may not have sponsored recently, or their figures may not be published. Ask them directly before you apply.
Licensed visa types: skilled worker, global business mobility: senior or specialist worker