Backend Developer (Ruby on Rails)
Core
Building reliable backend systems and APIs for a mortgage origination SaaS serving banks and internal operations, with a strong focus on security, compliance, and production reliability.
Role type
Senior Backend Engineer (Ruby on Rails)
Builds
Backend services, APIs, and integrations for mortgage origination workflows.
Domain
Fintech / Mortgage Origination / Banking
Deliverable
production ML models | product features | infrastructure
Required skills
Ruby on Rails, PostgreSQL, API design (REST/JSON), background job orchestration (Sidekiq/ActiveJob), testing (RSpec), AWS (ECS/Fargate/EKS), Docker, CI/CD, observability, security patterns (auth, encryption, audit logs)
Preferred skills
Infrastructure-as-code (Terraform), observability tooling (Sentry, Datadog, CloudWatch, OpenTelemetry), regulated industry experience (fintech, banks, payments, healthcare)
Responsibilities
Build and own backend services and APIs for mortgage origination SaaS; Design and maintain domain models, business rules, and auditable workflows; Implement integrations with third parties (KYC/KYB, credit bureaus, banking services); Implement background processing, idempotency, and safe job orchestration; Own database design, performance, and data integrity; Improve system performance, reliability, and quality metrics; Participate in CI/CD pipelines, deployment environments, and incident response; Implement secure patterns in application code (auth, authorization, encryption, secrets handling)
Seniority
Senior, hands-on IC
