Senior Software Engineer

About the role

The Role We’re looking for experienced Senior Software Engineers who enjoy building scalable systems, working with cloud infrastructure, and delivering high-quality software in production environments. This role sits at the intersection of software engineering and cloud/platform engineering. You’ll be designing, building, and operating modern software solutions using technologies such as Java, Python, C#/.NET and TypeScript, while working closely with cloud platforms and engineering teams to deliver reliable, production-ready systems. It’s a strong fit for someone who takes ownership, is comfortable leading technical decisions, and enjoys improving how software is designed, built, and operated. We’re also looking for engineers who embrace modern engineering practices, including AI-assisted development and agentic ways of working, to help teams work more effectively and deliver greater value. What You'll Be Doing Design, build, and maintain software solutions using Java, Python, C#/.NET and/or TypeScript Develop cloud-native applications across AWS, Azure, or GCP Contribute to system architecture and make key technical decisions Build and integrate APIs, event-driven systems, and distributed applications Collaborate with platform teams to ensure reliable, scalable deployments Contribute to CI/CD pipelines and improve engineering workflows Leverage AI-assisted development tools and agentic workflows to improve productivity and software quality Identify opportunities to automate routine engineering tasks through intelligent tooling and AI Troubleshoot issues across application and infrastructure layers Mentor engineers and contribute to a strong engineering culture Work closely with cross-functional teams to deliver production-ready software Required Strong experience building production systems using Java, Python, C#/.NET or TypeScript Solid experience working with cloud platforms (AWS, Azure, or GCP) Good understanding of system design, distributed systems, and scalable architectures Experience building and consuming APIs (REST and event-based systems) Comfortable working across the full software delivery lifecycle (build, deploy, operate) Strong understanding of software engineering fundamentals and best practices Experience contributing to technical design and architectural decisions Ability to take ownership and drive technical solutions from concept to delivery Interest in modern AI-enabled engineering practices and continuous improvement Nice to Have Experience with React, Angular, or Vue Experience with infrastructure-as-code tools such as Terraform or CloudFormation Exposure to containerisation and orchestration technologies such as Docker and Kubernetes Familiarity with CI/CD tooling such as GitHub Actions, GitLab CI, or Azure DevOps Experience working in cross-functional, agile product teams Experience integrating AI services, LLMs, or agent-based systems into software products Interest in improving engineering standards, tooling, and ways of working through automation and AI-assisted development Please note: We offer flexible hybrid working, but candidates should be based in Northern Ireland and able to attend our Belfast office when required. Why Join Instil? At Instil, we believe great work starts with happy, motivated people. That’s why we’ve built a benefits package that supports your wellbeing, growth, and life outside of work, because when you thrive, so do we. Recognition That Matters: A discretionary annual performance bonus that rewards your impact and contribution to our success. Flexibility Built In: Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters. Financial Security: A highly competitive pension scheme with generous employer contributions, private healthcare, and life assurance for peace of mind. Health & Wellbeing: Employee Assistance Programme, mental health support, cycle-to-work scheme, and regular social events to keep ou

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