1.0The One Group -Techhttps://theonegroup.co.uk/techtogbusinessstgrich600338<blockquote class="wp-embedded-content" data-secret="aVBU1gStry"><a href="https://theonegroup.co.uk/tech/job/software-engineer/">Software Engineer</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://theonegroup.co.uk/tech/job/software-engineer/embed/#?secret=aVBU1gStry" width="600" height="338" title="“Software Engineer” — The One Group -Tech" data-secret="aVBU1gStry" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://theonegroup.co.uk/tech/wp-includes/js/wp-embed.min.js </script> Software Engineer Up to £65k per annum 5 days per week on‑site due to project classification  Security Requirement: Sole British Citizens only (BPSS clearance required post‑offer) The Opportunity We’re seeking a Senior Software Engineer to take ownership of product stability, reliability, and long‑term system health. You’ll be the person who digs into complex issues, identifies root causes, and implements durable fixes that improve the experience for both customers and internal engineering teams. You will: Build deep knowledge of the system architecture Improve platform resilience and reliability Reduce technical debt through sustainable engineering solutions Influence engineering velocity and overall product quality What We’re Looking For Strong Software Engineering experience Solid background in C++, Java, or Rust Willingness to learn and develop in Ada Experience working in an Agile environment Familiarity with CI/CD pipelines and automated test scripting Interest in developing deep architectural understanding Experience with performance tuning and root‑cause analysis