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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer (RoR) - **Company:** VELOZIENT LLC - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** HTML, JavaScript (Programming Language), Artificial Intelligence, Application Integration Architecture, Automation of Tests, Cascading Style Sheets (CSS), Code Review, Databases, Relational Databases, PostgreSQL, Ruby on Rails, Ruby, Software Engineering, SQL Databases, ReactJS, Agentic-AI, Build Management, AngularJS, Front End Software Development, Claude - **Published:** October 3, 2026 - **Apply:** https://arc.dev/remote-jobs/j/redirect/pou8ns4g1d ## About the Role We are looking for a full-time, remote Senior Software Engineer (RoR) with 8+ years of software engineering experience, including 5+ years building and maintaining production Ruby on Rails applications, to join our U.S. client tight-knit, experienced engineering team. In this role, you will collaborate with cross-functional teams to design, implement, and optimize applications, while contributing to critical Ruby on Rails features, integrations, and engineering best practices., * Excellent English communication and interpersonal skills * 8+ years of professional software engineering experience, including 5+ years building and maintaining production Ruby on Rails applications, with examples of hands-on delivery and technical leadership * Deep Ruby and Rails expertise, relational data modeling, SQL, and PostgreSQL or a comparable database, including experience evolving production architecture incrementally * Experience creating user interfaces with HTML, CSS, JavaScript, and a modern frontend approach * Experience leading complex initiatives across multiple engineers, resolving dependencies, and taking work from an ambiguous brief through a successful release * Experience integrating APIs and diagnosing reliability, performance, and data issues across the stack, with sound judgment about migration risk and operational cost * Practical experience using AI tools, reviewing generated code critically, and helping other engineers adopt effective testing and verification practices * Clear written and verbal communication, with examples of building agreement, mentoring Senior engineers, and adapting a technical proposal in response to feedback. * An interest in consistent, accessible interfaces and the details that make a workflow understandable and reliable * Proven delivery experience in a vibrant, dynamic startup environment * A collaborative approach, a can-do attitude, and a relentless pursuit to attain goals and solve problems * Trustworthy, team-oriented, and transparent Desired Experience * University degree or relevant industry experience * Experience with Hotwire, React, Angular, or similar frontend framework experience is also valuable * Experience building user-facing AI agents or agentic application features, including tool use, evaluations, automated testing, and monitoring, with attention to reliability, permissions, failure handling, and keeping users informed and in control * Experience in healthcare, healthtech industry, or growth stage startups ## Description * Partner with product managers and cross-functional teams to clarify business needs, resolve ambiguity, and lead complex initiatives involving multiple engineers * Lead Product Requirements Documents, technical designs, estimates, and delivery plans; break initiatives into achievable milestones and coordinate dependencies * Design and build critical Ruby on Rails features, data models, and integrations; establish reusable patterns and guide architectural decisions across application areas * Help lead the engineering approach for user-facing AI agents, including shared tooling, evaluations, automated tests, permissions, monitoring, and failure handling * Guide consistent interfaces using the design system in Claude Design and existing pages; build and reuse views, components, styles, and accessible interaction patterns * Set a strong example for quality through hands-on development, automated tests, browser checks, and code reviews; mentor engineers, including Senior engineers, and unblock delivery * Lead safe deployments and migrations, including sequencing, rollback plans, and validation; follow through on production issues and address recurring causes * Use AI throughout planning, design, development, review, and release; help the team apply it effectively, protect sensitive information, and verify results. Humans own the finished work * Identify engineering constraints that affect delivery or operations; build agreement on focused improvements and measure whether they improve reliability, quality, or delivery time