Senior Full-Stack Software Engineer; Ruby on Rails

Full Time Remote, US

REMOTE POSITION

Decisiv is hiring a Senior Full-Stack Software Engineer to help us build the next generation of our Service Relationship Management platform. The way great software gets built has changed, and we are hiring engineers who have changed with it, engineers who pair strong fundamentals with modern leverage to ship more, reason about whole systems, and operate at a level that simply was not possible a few years ago.

Strong Ruby on Rails fundamentals are the floor, not the ceiling. We are looking for senior engineers who think in systems, who hold a high bar for quality and reliability at scale, and who treat their toolchain as a competitive advantage. You will own complex problems end-to-end, modernize legacy systems, and ship features that touch real fleets, service providers, and manufacturers across North America.

If you are excited by an entirely new way of building software, where senior engineers operate more like systems designers and orchestrators than line‑by‑line authors, we want to talk to you.

Modern leverage is the baseline. Engineers here are expected to be fluent with the latest generation of developer tooling and to use it every day to compound their output. We do not treat this as a side experiment. It is how we work.

Systems thinking over syntax. When code is cheap to produce, the differentiator is judgment: knowing what to build, where complexity lives, what will fail in production, and how parts of the system fit together. We optimize for engineers who reason about whole systems and second‑order effects.

Engineers as systems orchestrators. Senior engineers here spend more time framing problems, designing systems, reviewing work, and steering outcomes than typing implementations. The job is shifting from author to architect, and we want people who are already operating that way.

High agency, high velocity. We expect senior engineers to take problems from ambiguous to shipped with minimal supervision, and to use modern leverage to compress what used to take weeks into days. Velocity here is meaningfully higher than legacy norms, and the bar for quality is higher with it.

Engineering as a craft. Leverage is not an excuse. Code that lands in production is code you understand, can defend, and would be willing to debug at 2am.

Decisiv powers the largest asset service management ecosystem in the commercial vehicle and equipment world. Our Service Relationship Management (SRM) platform connects more than 5,000 service locations and millions of assets, managing over 14,000 service and repair events per day across North America.

We use data, connectivity, and intelligent software to transform how service, repair, and maintenance happen, reducing downtime, improving asset utilization, and giving our users clarity and control in a complex system. Our leadership team has driven innovation across multiple ventures and industries, and we work at the intersection of scale, domain complexity, and real‑world impact.

When you join Decisiv, you help shape an ecosystem that fleets, service networks, and manufacturers depend on every day.

Own outcomes end-to-end. Take features from problem definition through design, implementation, rollout, and operation across database, API, and front‑end layers.

Build with leverage. Use the modern toolchain, including the latest generation of coding tools, to materially compound your output. Frame problems so they can be attacked efficiently; supervise, review, and steer the work end-to-end.

Reason about systems, not just code. Understand data flow, failure modes, performance characteristics, and operational behavior…