Can you suggest some short-term courses of six months to one year duration that will help me get a job and settle abroad in UK/Ireland for a Postgraduate?

A course under 6 months will not get you working legally in the UK or Ireland afterward, no matter how job-focused it sounds, so your real target should be a full 1-year postgraduate master's that leads directly to a post-study work visa. Understanding this distinction now saves you from an expensive dead end.

1-Year Postgraduate Options And Visa Pathways

Steps To Legally Settle After Your Course

• Target a Level 9 master's in Ireland or an RQF Level 7 master's in the UK, both starting in September, and avoid 3-to-6-month certificates if immigration is your end goal.
• In Ireland, confirm the course sits on the ILEP (Interim List of Eligible Programmes).
• In the UK, confirm the university is a licensed student sponsor that issues a CAS.
• The UK Graduate Route gives you 2 years to work in any job at any skill level; Ireland's Stamp 1G gives you 2 years to secure a Critical Skills Employment Permit.

My Advice

Never enroll in a short course purely on the promise of a fast route to a job abroad, and instead commit to the full 1-year master's in a field like data, finance, or supply chain, since that single year buys you two full years of legal post-study work in either the UK or Ireland.