Senior Software Engineer (RoR)

Velozient; Argentina; Remote; ARS 181,904,000 - 257,697,000; Full time

Benefits offered by this job

15 days PTO

Floating day

Sick days

National holidays

Job summary

Velozient is seeking a Senior Software Engineer (RoR) to join a remote, full-time engineering team for a US-based healthtech client. You will contribute to production RoR systems, design scalable architectures, and lead critical features, AI integrations, and best practices.

You will collaborate with cross-functional teams to deliver reliable, secure software while mentoring engineers and driving architectural decisions in a fast-paced startup environment.

Qualifications

• 8+ years of professional software engineering experience
• 5+ years building/maintaining production RoR apps
• Relational data modeling and SQL proficiency

Responsibilities

• Partner with product managers to clarify needs and lead complex initiatives
• Lead PRDs, designs, estimates, and delivery plans; break work into milestones
• Design and build RoR features, data models, and integrations
• Lead the engineering approach for user-facing AI agents, tooling, tests, permissions and monitoring
• Follow design-system interfaces to build reusable views and components
• Oversee safe deployments, migrations, and production issue resolution
• Apply AI throughout planning, development and release while protecting sensitive information
• Identify engineering constraints and improve reliability, quality or delivery time

Skills

Ruby on Rails

SQL

PostgreSQL

API integration

AI tooling

Technical leadership

English communication

Education

University degree or relevant industry experience

Tools

Hotwire

React

Angular

Job description

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.

Our client is venture capital backed, healthtech company changing how the industry codes medical information by building a marketplace that connects healthcare companies with over 4,000 certified coding specialists. The client is focused on expanding quickly its product, engineering, and design teams with passionate builders who thrive in a fast-paced environment to support its rapid growth.

Responsibilities

• 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
• 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

Required Experience

• 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 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

Additional Information

• Knowing your ideas are heard and matter — think big!
• You get to own your job and be recognized for your contributions
• Work with smart and creative people
• Making mistakes is human. Let's learn from them. Be transparent!
• We recognize you as an individual — no presumptions or judgment. Be the extraordinary you!
• 15 days Paid Time Off (PTO), 1 floating day, 3 sick days, and designated national holidays