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Senior Ruby on Rails Engineer

3 Locations💼 Full-time💰 $82,100–$172,500🗓 2026-07-17 → 2026-07-30

Core

Design and implement technology solutions for Newline's core RESTful API, backend infrastructure, and internal data pipelines using Ruby on Rails.

Role type

Senior IC Ruby on Rails Engineer

Builds

Newline's core RESTful API, backend infrastructure, internal data pipeline, and BI tools

Domain

Banking / Fintech

Deliverable

production ML models | product features | infrastructure

Required skills

Ruby, Ruby on Rails, PostgreSQL, ActiveRecord, RSpec, CI/CD (Jenkins), Terraform, API design, unit testing, IaC

Preferred skills

High TPS API systems (~100 TPS), highly-available enterprise B2B SaaS products, regulated financial environment experience

Technologies

Ruby, Rails, PostgreSQL, Terraform, Jenkins, RSpec

Responsibilities

Develop and maintain Newline's core RESTful API; Work with SREs to design and implement backend infrastructure using Terraform; Write unit and integration tests; Participate in software architecture discussions and code reviews; Integrate platform with bank core services and APIs; Assist in establishing data security best practices; Provide coaching and mentoring for new team members

Seniority

Senior, hands-on IC

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