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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full-Stack Software Engineer (Ruby on Rails) #1148 - **Company:** Decisiv, Inc. - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Query Performance, Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Business Analytics Applications, Automated Storage and Retrieval Systems, Code Review, Databases, Continuous Integration, Information Engineering, Relational Databases, Software Debugging, Github, JSON, Python (Programming Language), PostgreSQL, Scrum Methodology, Ruby on Rails, Software Engineering, Data Streaming, Web Applications, Openapi, Capybara, ReactJS, Rspec, Large Language Models, Multi-Agent Systems, Indexer, Vue.js, AngularJS, Free and Open-Source Software, Graphql, Front End Software Development, Industrial Software, Data Pipelines, Docker - **Published:** May 15, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=3f91b6ba40d79ba3 ## About the Role Do you have a Bachelor's degree?, BS/BA or equivalent experience; 6+ years building production web applications, including 3+ years with Ruby on Rails in production. Technical foundation (required) * Deep, current experience with Ruby on Rails in production environments. * Strong proficiency with relational databases, PostgreSQL preferred, including schema design, indexing, and query performance. * Experience integrating modern front-end frameworks (React, Vue, Angular, or similar) with Rails back ends. * Strong API design and implementation skills (REST, JSON:API, OpenAPI; GraphQL a plus). * Working knowledge of AWS, Docker, GitHub, and CI/CD pipelines. * Practical experience with testing (RSpec, Capybara), performance tooling, observability, and production debugging., * Systems thinking. You instinctively reason about end-to-end behavior, integration points, failure modes, and the second-order effects of design choices. * High agency and ownership. You take loosely-defined problems and drive them to shipped, operating outcomes, and you stay accountable when things break. * Quality judgment under leverage. You can move quickly without lowering the bar. You review your own work and the work of your tools with the same rigor. * Clear written communication. You can explain technical decisions and tradeoffs in writing, precisely enough that teammates, stakeholders, and your toolchain can act on them. Bonus points for * Hands-on experience building on top of large language models: evaluations, agent orchestration, or retrieval systems in production. * Experience with Python and Java. * Knowledge of data engineering, ELT pipelines, or analytics platforms. * Background in API analytics, anomaly detection, or trend-based error analysis. * Open-source contributions or a strong public engineering portfolio. * Domain experience in commercial vehicle, fleet, logistics, or industrial software. Required * Travel - 5% * Due to travel requirements, you must reside in the United States ## Description * 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 of the systems you touch, including the parts you did not personally write. * Drive platform reliability and developer productivity. Improve the runtime systems and the tooling, observability, and feedback loops that the rest of engineering depends on. * Modernize and extend. Evolve legacy services for stability, performance, and scalability while delivering new capability into the broader ecosystem. * Design durable APIs and integrations. Shape REST/JSON:API/OpenAPI contracts and front-end integrations that other teams and partners can build on for years. * Collaborate cross-functionally. Work closely with product, design, and other engineers to translate ambiguity into shipped product. Participate in sprint planning, code reviews, and architecture discussions. * Write things down. Produce clear specs, ADRs, PR descriptions, and runbooks. Precise written thought is a force multiplier that scales decisions across the team and across the toolchain. * Raise the bar. Mentor other engineers, model strong high-leverage workflows, and contribute to how we build software here. * Share the pager. Participate in the on-call rotation for systems your team owns., * Modern tooling fluency. You have already evolved your workflow to take advantage of the latest generation of developer tooling, and you have well-formed opinions about where it earns its keep and where it does not. ## Related Videos - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [Recruitment Reinvented: Bold strategies and the $10K signing incentive](https://www.wearedevelopers.com/videos/1068-recruitment-reinvented-bold-strategies-and-the-10k-signing-incentive) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Introducing JSON Structure](https://www.wearedevelopers.com/videos/100219-introducing-json-structure) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers)