Tech Lead Full-Stack Rails Engineer

Role Description

As a Full-Stack Rails Tech Lead, you’ll architect and implement LLM-powered web applications within our microservices-based Rails 8 platform. Reporting directly to our CTO, you’ll collaborate with a small, high-impact team to deliver user experiences across Dividend.com, MutualFunds.com and other brands within our portfolio. This role combines expert Ruby on Rails skills with AI integration expertise, requiring you to leverage LLMs in your development workflow, state management and user interactions.

You’ll work in a remote-first hybrid environment, which encourages in person collaboration, using ShapeUp to manage projects that trade-off on-time delivery for de-scoped outcomes. As a technical leader, you'll have a seat at the table shaping system architecture, implementing core features all while embracing an entrepreneurial mindset and a “get things done” mentality.

• Architect and maintain Rails applications (Rails 8)
• Integrate LLMs into our microservices architecture for state management and real-time user experiences.
• Enhance front-end experiences with Hotwire, StimulusJS, or React, ensuring seamless AI-driven interactions.
• Optimize LLM inference for low latency and cost, using caching and asynchronous processing.

Qualifications

• Back-End: Ruby (5+ years, expert-level)
• Ruby on Rails (Rails 6-8 preferred)
• PostgreSQL (or MySQL)
• Elasticsearch
• Redis
• Docker
• Front-End: StimulusJS or JavaScript ES6
• Tailwind CSS
• HTML
• AI Integration: Experience integrating AI/ML models (e.g., LLMs, NLP) with web applications
• Familiarity with LLM frameworks (e.g., LangChain, Hugging Face) or APIs (e.g., xAI, Anthropic)

Requirements

• Kubernetes for microservices orchestration (Nice-to-Have)
• React for advanced front-end components (Nice-to-Have)
• Graph databases for complex financial data (Nice-to-Have)
• Contributions to open-source RoR or AI projects (Nice-to-Have)
• Entrepreneurial mindset with a passion for AI and FinTech
• Natural leader who mentors and inspires teammates
• Problem-solver with a “get things done” mentality
• Excellent communication, thriving in remote and cross-team collaboration
• Attention to detail, ensuring clean, maintainable code
• Team player comfortable as an individual contributor

Benefits

• Impactful Work: Build AI-powered tools that help millions of investors make informed decisions from data-driven insights.
• Cutting-Edge Tech: Work with Rails 8, LLMs, and modern tools like Hotwire, Databricks, and xAI’s API in a microservices architecture.
• Autonomy and Influence: Collaborate directly with our CEO and CTO to shape our AI-driven platform, with freedom to innovate.
• Competitive Compensation: $160,000–$200,000 CAD/USD (based on experience) and benefits.
• Remote Flexibility: Remote-first (±3 hours from ET) with hybrid in office collaboration in Toronto or NYC
• Growth Opportunities: Budget for AI and Rails conferences (e.g., NeurIPS, RailsConf), plus access to cutting-edge AI tools for experimentation.
• Dynamic Culture: Join a small, no-ego team passionate about trust, innovation, and making a difference in FinTech.

How to Apply

Submit your resume, GitHub profile, and a brief note on why you’re excited about building AI-driven FinTech to View email address on us.fitly.work.