Full-Stack Software Engineer — Ruby

We are looking for a Full-Stack Software Engineer to join the Autobia team. This role works across a Ruby on Rails codebase with a strong backend lean — most of your time on services, data, and integrations, while comfortably handling the front end when the feature needs it. This is high-volume money movement, processing thousands of BNPL and POS transactions, so correctness, reliability, and scale all matter.Key Responsibilities:Build, ship, and operate Rails backend services and full-stack features.Own your work end to end: design, implementation, testing, deployment, production support.Build and maintain integrations with internal and external services. Write clear, maintainable code and contribute to the squad's technical decisions. Qualifications:Mid–senior full-stack engineer, backend-strong, with solid Ruby on Rails experience. 3–5 years of professional full-stack experience. Strong fundamentals: API design, data modeling, relational databases, testing. Comfortable across the stack — can build and debug front-end features when needed. Proven with high-traffic, high-throughput systems — performance under load is part of the job. Ownership mindset: takes a problem from ambiguity to shipped and supported.Nice to Have:Payments, BNPL, POS, or other money-movement / fintech experience.Experience operating high-reliability, correctness-critical systems.Knowing PostgreSQL is a plus. As a full-stack role, knowing React is a plus. Experience with GKE or AWS is a plus.