take down studentship advert; add RSE post

Author: edbennett

opportunities.md

@@ -10,13 +10,23 @@ if you would like to collaborate with us.
 
 ## Vacancies
 
-{% if true %}
+{% if false %}
 
 We are recruiting for the following PhD studentship,
 based jointly at Swansea University and the University of Edinburgh:
 
 - [Fully funded PhD in Theoretical Explorations on the Lattice with Orthogonal and Symplectic groups (TELOS): Toward the Exascale (RS826)](https://www.swansea.ac.uk/postgraduate/scholarships/research/science-swansea-edinburgh-phd-theorectical-explorations-2025-rs826-.php)
 
+{% elif true %}
+
+We are recruiting for a Research Software Engineer,
+to support the TELOS Collaboration's efforts in reproducibility,
+as well as forwarding the goals of the CCP-TEPP project.
+
+For more information,
+and to apply,
+please see [the full advertisement](https://www.swansea.ac.uk/jobs-at-swansea/current-vacancies/details/?opening-id=10678).
+
 {% else %}
 
 We currently have no open positions for PhD studentships or postdoctoral roles.