What We Are Looking For At OMNIA Training, we’ve brought together some of the UK’s most innovative defence training organisations into a single consortium to delivery one powerful mission: to transform the British Army’s training system and create the best-trained Army in the world. OMNIA Training will redefine the British Army’s collective training, standing up as the Army’s Strategic Training Partner. To do that, we are looking for the best and brightest minds from across the UK. We are backed by British innovation and powered by world-class experts, like you. OMNIA Training is primed by Raytheon UK, but all five partners (Raytheon, Rheinmetall, Capita, Skyral and Cervus) are key to delivering the scope of the contract. Rheinmetall’s constructive simulation product, OSIRIS has been selected as the OMNIA solution for the future Combined Arms Virtual Simulation. This is more than a job — it’s a mission. You will be part of a high-impact, collaborative environment, where we expect everyone to live the values and standards of the British Army. Every person in our team plays a critical role in delivering OMNIA Training’s vision; designing, delivering, and transforming collective training so the British Army is ready to fight and win. This role is the OSIRIS Software Engineer, which is responsible for the delivery of OSIRIS into the Simulation & Emulation service. This will involve technology transfer from Germany with local developments to meet the needs of the UK customer. This is a new role to support Rheinmetall Electronics UK (REUK) growth within the Simulation and Training domain. You will be joining a distributed development team working on a constructive simulation product currently under development by Rheinmetall Electronics GmbH located in Bremen, Germany. Your initial focus will be on knowledge transfer, including a visit to Bremen for training, familiarisation, and early development tasks. Following this onboarding period, you will contribute to the ongoing development of the product, introducing new features and functionality to support the UK military customer, and integrating the software with third-party systems and platforms. The role offers the opportunity to work with modern technologies and international teams on technically engaging and meaningful work. Applicants must be willing to work within the Defence sector and undertake Baseline Personnel Security Standard (BPSS) and Security Clearance (SC) checks, if not already held. Essential Skills WHAT QUALIFICATIONS YOU SHOULD HAVE Several years of experience in C# (Sharp) and .NET Core Strong skills in implementing Services with web interfaces (using gRPC, WebAPI/REST) Software architecture and design skills Degree in computer science, engineering, or a related field Analytical thinking, problem-solving skills, and the ability to work independently and cooperatively in a distributed team Excellent communication and teamwork skills Desirable Skills Experience with developing distributed simulation systems and constructive simulation Knowledge of cloud environments and databases (preferably PostgreSQL) Experience in developing distributed systems and client/server architectures, especially for constructive simulation context. Knowledge of using ASP.Net Core and SignalR Expertise integrating and operating distributed event streaming platforms (preferably Apache Kafka) Experience with containerized development environments and deployment approaches (preferably Docker) Experience with Distributed Interactive Simulation (DIS) and High-Level Architecture (HLA) implementation Experience using FlatBuffers Experience using git and MS Visual Studio development environments Personal Attributes To succeed in this role, the ideal candidate will be a proactive and reliable team player who thrives in both independent and collaborative environments. They will demonstrate strong communication skills, enabling them to effectively engage with colleagues locally and remotely, as well as interact professionally with UK military stakeholders. Adaptability and a willingness to take initiative are essential as the role involves working with evolving technologies and cross-national teams. A keen attention to detail, combined with a problem-solving mindset will help them contribute meaningfully to the development of complex simulation systems. Above all, we value individuals who bring a positive attitude, a commitment to quality and a strong sense of ownership in their work. We are looking for individuals who want to serve. You’ll have a mission focus, and the enthusiasm and drive to ‘get things done’. You’ll want to work in collaboration with other defence training organisations, and the British Army. You won’t let bureaucracy get in the way of what needs to be done, you’ll learn lessons and share these lessons across the team. You won’t necessarily have a military background, but you’ll understand what it means to serve and to put the mission first. What We Offer You We want REUK to be the employer you choose to build your career with. We have lots of opportunity to grow as our business continues to grow. We are proud to be a Disability Confident employer, committed to fostering an inclusive and supportive workplace for all. We are proud supporters of the Armed Forces Community. We welcome applications from Veterans, Reservists, Cadet Force Adult Volunteers and military spouses and partners. We are passionate about finding the right people to join us and we want you to be proud to work with us. Our vision is to become a recognised and respected solution provider while delivering high-technology, high reliability & high-quality products and systems. 26 Days holiday plus Bank holidays (increasing with service) Flexible Working 4-times Death-in-Service Scheme (3 months of service) BUPA Healthcare & Dental-Care Insurance (after successful completion of probation period) Long Service Rewards with additional holidays Enhanced Employer Pension contributions of 6.8% Salary sacrifice schemes for Cycle to Work Excellent Training Opportunities Recommend a friend scheme Buying & Selling of Annual Leave Staff social events throughout the year Recognition for your work CONTACT INFORMATION Due to our pre-employment checks, we require applicants to have lived in the UK for at least 5 years. To apply, please send your CV to hr_reuk@rheinmetall.com