RJ Engineering offers a high quality, price competitive sub-contract Machining, Fabrication, Welding & Proof Load Testing services to a large number of prestige engineering clients worldwide.   Based in Derby, we produce precision components in a wide range of materials and sizes – all controlled by our quality management system approved to ISO 9001:2015 standards. Our ethos is to help your business perform well and to that end, we have the capability and capacity to provide you with large production volumes and one-off prototypes in very competitive lead times and at very competitive prices.