Senior Developer or Developer

£1000–£1400 per day | Central London (3 days per week) | Inside IR35 Senior ETRM Developer – Endur (JVS / OpenComponents) You\’ll be joining one of the most technically forward-thinking ETRM teams in the industry – driving design and delivery of a highly integrated Endur platform across front-to-back energy trading functions. What’s key here: You must have strong hands-on Endur dev experience , either with JVS or OpenComponents (Java) . Solid understanding of the trade lifecycle , strong technical troubleshooting, and the ability to interface with front-office users. This is a delivery-focused role – they’re not hiring consultants, they want problem-solvers who can build. You’ll be responsible for: Owning Endur development workstreams from design to production release Driving platform enhancements and new builds across STP, PnL, and risk Managing technical support and resolving live incidents (hands-on) Leading discussions with the business and on/offshore teams Building and supporting custom web interfaces, APIs, and backend integrations What you’ll need: Expert-level Endur experience – JVS or OpenComponents (Java) Strong SQL / Oracle skills Familiar with key tech: REST APIs, Kafka, DMS, Crystal Reports, Tomcat A good grasp of the ETRM lifecycle: Trading, Risk, Ops Bonus points for Python skills and experience building WebApps Independent mindset – someone who can own delivery and get it done To apply – click the link provided or for a faster response, email Barry.Ansell@HarringtonStarr.com