Work on Technology That Protects What Matters At SiXworks, we build secure digital solutions that support Defence and National Security missions. Our teams work on complex problems where reliability, security, and speed of innovation matter. We’re looking for a Software Architect who enjoys solving difficult technical challenges and wants their work to have real operational impact. What You’ll Do As a Software Architect, you’ll help design, build, and deliver secure digital solutions in highly secure environments. You’ll work alongside engineers, architects, and delivery specialists to develop technology that enables faster, safer decision-making for critical operations. Your work may include: Proactively collaborate with Solutions Architects, Project Managers and other stakeholders to quickly understand project goals. Develop a comprehensive understanding of the project vision and requirements, including functional and non-functional requirements, performance requirements, disaster recovery etc. Utilize suitable methodologies and existing tools for effective analysis and design. Develop and maintain SW architectures for responsive front-end SW and robust, scalable back-end SW. Collaborate with the development team to present the SW architecture to stakeholders and support the design, development and maintenance of software solutions. Gain stakeholder agreement on Analysis and Design at each stage in the development process. Produce documentation and other artefacts and perform all other activities in accordance with the SW Engineering SDLC Process, e.g. conducting effective design sessions, code reviews and defect management activities. Assist development teams with writing of user stories and acceptance criteria. Interface with other tech functions (Test, Infrastructure, Platform, Site Reliability). What We’re Looking For We value people who take ownership, think critically, and enjoy working as part of a collaborative team tackling complex challenges. You don’t need to tick every box, but we’re particularly interested in people with skills/experience in: Bachelor's degree in Computer Science, Engineering or related field. Extensive (5 years) professional experience of working as a Software Engineer or Architect. Solid understanding of software development principles, algorithms and data structures. Experience in PlantUML (C4) or similar. Markdown for documentation. Security principles and best practices. Experience of working to a vision rather than comprehensive requirements, and changing direction quickly according to stakeholder feedback. Familiarity with Agile development methodologies and DevSecOps. Strong communication and collaboration abilities within a team environment, including written and verbal communication and remote collaboration. Ability to compare different languages and technologies to contribute to selection discussions. Ability to adapt to a fast-paced, dynamic work environment and learn new technologies quickly. Experience working in multidisciplinary teams, communicating with a variety of stakeholders and understanding their requirements. Experience with Kubernetes. Experience working in the Defence or National Security industries. Just as important are curiosity, strong problem solving ability, and the motivation to continuously improve how technology is designed and delivered. About SiXworks SiXworks is a specialist digital innovation partner delivering secure, mission-critical technology to Defence and National Security organisations. We focus on digital experimentation, secure-by-design architecture, cloud technologies, and rapid application development to help our customers move faster and stay ahead of evolving challenges. Our team combines expertise from across technology, business, and operational backgrounds including the armed forces creating a collaborative environment where practical thinking and innovation thrive. Why Join Us Our culture is guided by six principles: Agility, Security, Innovation, Quality, Collaboration and Inclusivity our North Star for how we work. SiXworks is a leading provider of secure digital solutions, specialising in digital experimentation and focused on fail-safe-fast cutting-edge technology solutions deployed in highly secure environments. As an end-to-end digital innovation and delivery partner, we turn complex challenges into mission-critical digital advantages. This is a thrilling time for us, with ambitious plans for growth. We are looking for brilliant, experienced, driven and self-motivated people to join the team on our journey. We offer competitive salaries and a package that supports your wellbeing and development, including 25 days annual leave bank holidays, free Private Medical cover and Life Assurance, Generous pension (10% employer, 5% employee contribution), Bonus and Professional development and training support. In addition to secure parking, gym, café & restaurant on site and lots of open break out spaces. A word on UK Security Clearance Due to the secure nature of the position and working environment, you must have or be eligible to obtain Security Clearance. More details relating to UK Security Clearance can be found here: United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk) Interested? Please apply!