Software Engineer, Backend Developer

Sygneus supports deep-tech companies operating in complex, high-trust markets.

We work across defence, nuclear, CNI, and adjacent sectors, helping technical businesses convert capability into commercial traction and funded programmes. We are looking for a Software Engineer to help design, build, and maintain these systems.

This role combines product development with practical operational impact, focused on building tools that solve real commercial problems.

You will contribute to the development of scalable software systems and automation capabilities across internal and customer-facing platforms. The role is suited to someone who enjoys building practical tools quickly, working independently, and operating close to commercial users. You will have direct influence over architecture, functionality, and product direction.

• Design and develop internal and external software tools
• Build and maintain APIs, integrations, and automation workflows
• Support frontend and backend system development
• Contribute to product architecture and technical decision-making
• Work closely with commercial and operational users to refine solutions
• Support deployment, maintenance, and continuous improvement

• Functional, maintainable systems that deliver measurable value
• Rapid iteration and deployment
• Strong alignment between technical implementation and operational need
• High reliability, security and usability

• Experience in software engineering or full-stack development
• Familiarity with APIs, databases, and modern frameworks
• Ability to work independently and deliver production-ready solutions
• Interest in AI, automation, commercial tooling, or workflow systems desirable
• Experience with CRM or business systems integration beneficial

• High autonomy and ownership
• Opportunity to shape new commercial software products
• Exposure to real operational and market challenges

We are interested in software engineers who want to build practical systems with direct commercial impact.