Senior Software Engineer, JavaScript

About the Role Edge Tier is looking for a Senior Software Engineer who wants to do some of the best work of their career. This is a hands‐on role within our backend team with real ownership. We build software with evolving tools – AI coding agents are part of our everyday workflow. We care about the quality of the output, not just the speed of it. What You'll Be Doing Translating product requirements into detailed technical specifications and owning delivery end‐to‐end from design through implementation, testing, and release. Architecting changes to Edge Tier's core product including APIs, services, and databases. Writing high quality and well‐structured Python code while holding a high standard in code reviews. Directing and critically reviewing AI coding agent output to ensure quality. Monitoring application performance and error logs. Mentoring junior engineers. 10% Testing and releasing features: 5% Performance monitoring and error logs: 5% Developer tooling improvements: What You'll Need 6+ years of professional software development experience in a product, Saa S, or similar environment. Solid Python skills. SQL experience, ideally Postgre SQL. Experience working with data at scale in large datasets or high‐volume systems. True end‐to‐end engineering experience: local development, deployment, debugging in production, ongoing maintenance. Proven ability to work independently and manage your own time without close supervision. Hands‐on experience with AI coding tools and agents. Useful But Not Essential Flask, AWS, Pytest, Git Hub Actions or similar CI/CD tooling, Terraform, experience writing or customising AI agents. Professional growth budget of €2,000 annually. Health insurance, bike‐to‐work scheme, company‐matched pension plan for Ireland‐based employees. This policy encompasses all aspects of employment, including hiring, placement, promotion, termination, layoff, recall, transfer, leave of absence, compensation, and training. #