Senior Engineer, Full-Stack (Ruby on Rails)

Triwill Group; United States; On-site; USD 140,000 - 170,000; Full time

Job summary

Triwill Group seeks a Senior Engineer, Full-Stack (Ruby on Rails) based in the United States. This role emphasizes backend orientation and end-to-end ownership of a growing B2B SaaS product, with work spanning backend services, APIs, web applications, and mobile experiences.

You’ll blend hands-on engineering with product thinking, customer collaboration, and architectural decisions, enjoying autonomy to take features from concept through production and ongoing improvement in a small, fast-moving

Responsibilities

• Own backend services, APIs, and web applications; contribute to architectural decisions.
• Work across backend services and APIs, web apps and mobile experiences while shaping technical direction.
• Take features from concept through production, enabling ongoing improvements and reliability.
• Operate within a small, fast-moving team, delivering high-quality software and collaborating with customers.

Job description

Description:

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Engineer, Full-Stack (Ruby on Rails) based in United States.

This is an opportunity for a senior, backend-oriented full-stack engineer to take meaningful ownership of a growing B2B SaaS product. You’ll work across backend services, APIs, web applications, and mobile experiences while helping shape technical direction. The role combines hands‑on engineering with product thinking, customer collaboration, and architectural decision‑making. You’ll have the autonomy to take features from initial concept through production and ongoing improvement. Working within a small, fast‑moving team, you’ll help solve complex problems while raising engineering standards. Your work will directly influence tools that help automotive professionals make faster, more informed business decisions.