What You’ll Do:

• Design, build, and maintain backend services and APIs that power the Cash Forecasting platform, while remaining comfortable picking up frontend work when the task calls for it
• Work across a large, sophisticated, multi-tenant SaaS codebase, writing code that's built to scale across enterprise customers and their data
• Own the data layer, schema design, query performance, and data integrity - with a strong emphasis on PostgreSQL and SQL more broadly
• Write and maintain thorough test coverage using RSpec, treating testing as a first-class part of delivery
• Package and deploy services using Docker, and work within our AWS-based cloud infrastructure
• Write scripts and tooling to automate repetitive work, support data migrations, and keep the team moving quickly
• Instrument the systems you build with strong observability practices -logging, metrics, and tracing — to catch and resolve issues before they impact customers
• Benchmark and profile code to identify performance bottlenecks, and make evidence-based decisions about where to optimise
• Collaborate closely with product managers, designers, and fellow engineers to translate business and customer needs into robust technical solutions
• Participate in code reviews and technical design discussions, contributing to the team's overall growth and improvement
• Be a champion of the YBIYRI ethos (you-build-it-you-run-it), which includes participating in the on-call pager rotation

What You'll Bring:

• 4-8 years of professional software development experience, ideally including full-stack work with a backend lean
• Strong SQL fundamentals; hands-on experience with PostgreSQL ideal
• Comfortable working within large, sophisticated, existing codebases and making changes safely
• Scripting ability for automation and tooling (language-agnostic)
• Experience with Docker or other containerisation technologies
• Proven Git proficiency, including collaborative branching workflows
• Proficiency in at least one major programming language (such as Ruby, Python, or Java)
• Experience employing AI tools throughout the development lifecycle to speed up problem-solving and delivery
• Experience testing with RSpec

Preferred Knowledge / Experience: