Ruby Labs

Product Manager

• Maintain end-to-end operational control of the product lifecycle — from ideation to post-production monitoring — with military-grade discipline and pixel-perfect attention to detail.
• Daily Product Command — Manage every phase of the product lifecycle on a daily and hourly basis.
• Product Backlog Management — Keep a refined, prioritized backlog of features, bugs, and improvements.
• Feature Discovery & Delivery — Lead ideation, research, competitive benchmarking, and delivery of new features on schedule.
• UI/UX Perfection — Enforce pixel-perfect design standards, instantly spotting micro-alignment issues.
• UX Research Management — Maintain an ongoing competitor intelligence and UX research update process.
• Post-Production Control — Monitor releases in real time, addressing any issues immediately.
• Product Events & Monitoring — Maintain thresholds, alerts, and proactive monitoring to catch anomalies early.
• Mixpanel Execution — Use Mixpanel, product metrics, event tracking, funnels, heatmaps, and session replays to monitor key product metrics and drive product backlog ideas forward.
• Twice-Daily Feedback Loops — Provide detailed feedback to all Dev and Data Analytics teams at least twice per day to ensure alignment and speed.
• Team Coordination — Facilitate the daily backlog of action items for Product Owner, QA, Dev, and Data teams, enforcing accountability.

User Researcher

• Conduct competitor and market research to understand user behaviors, flows, pain points, and needs.
• Analyze existing user interfaces and the design of our current solutions.
• Utilize tools like Visily or Figma to create wireframes, prototypes, and mockups.
• Develop user personas, customer journey maps, and usability studies to support data-informed decisions.
• Collaborate closely with product managers, developers, and designers to ensure seamless user experiences.
• Test and validate design concepts through A/B testing, surveys, interviews, and analytics.
• Document research findings and present insights to stakeholders.
• Stay up to date with industry trends and UX best practices to continually refine our approach.

UX Researcher

Full-stack Engineer

• Develop high-quality user interfaces using Next.js, React, and TypeScript, leveraging UI libraries such as NextJS, HeroUI, and Tailwind CSS.
• Write clean, scalable, and maintainable code, ensuring optimal performance and responsiveness across browsers and devices.
• Create and maintain reusable frontend components.
• Develop robust backend services and high-quality Node.js (with Nest.js).
• Write clean, efficient, and scalable backend code.
• Design and optimize database schemas and queries for performance and scalability.
• Accurately translate design wireframes and layouts into functional frontend implementations.
• Ensure consistency, usability, and accessibility throughout all UI implementations.
• Optimize interfaces for maximum performance and user experience.
• Collaborate effectively with product managers and backend developers to understand requirements and deliver integrated solutions.
• Participate actively in code reviews and maintain high coding standards.
• Contribute to efficient workflows and seamless transitions between design and development phases.

Senior Full-Stack Engineer

AI Engineer

• Advanced Prompt Engineering: Designing complex, dynamic prompt templates with conditional logic and efficiently reusing information and context within prompts to maximize generation quality and reasoning.
• Structured Outputs & Schemas: Implementing various response schemes (JSON mode, function calling, Zod/JSON schemas) to ensure AI outputs are predictable and ready for seamless integration into application logic.
• Prompt Engineering & Evaluations: Building robust evaluation pipelines and using Langfuse to collect feedback and score the quality of responses in real time.
• Tracing & Debugging: Performing deep debugging of complex LLM chains using Langfuse traces to identify bottlenecks and optimize for cost, latency, and context window usage.
• AI A/B Testing: Running systematic experiments across different models via OpenRouter (e.g., comparing Claude 3.5 Sonnet vs. GPT-4o) and analyzing results based on quantitative metrics.
• Data-Driven Decisions: Making deployment decisions for new prompts or models strictly based on quantitative benchmarks and trace data, rather than intuition.
• Output Scoring & Analysis: Developing scoring systems to analyze the “Problem → Solution” chain and identify root causes of hallucinations or logic errors using Langfuse analytics.
• Model Performance & Fine-Tuning: Regularly re-evaluating model performance as new architectures emerge and performing fine-tuning when necessary to meet specific domain requirements.

• Develop web application features using Next.js, React, and TypeScript.
• Implement APIs and backend functionality with guidance from senior engineers.
• Work with databases and caching tools to support application performance.
• Fix bugs and improve existing functionality.
• Write clean, maintainable code following team standards.
• Participate in code reviews and technical discussions.
• Help implement testing to ensure application stability.
• Collaborate with product managers, designers, and engineers to ship new features.

Junior–Mid Full Stack Engineer

Conversion Rate Optimizer

• Analyze product funnels to identify drop-offs, friction points, and inefficiencies.
• Continuously benchmark competitors and identify high-impact opportunities.
• Formulate clear, data-backed hypotheses to improve conversion and retention.
• Build functional prototypes and flows using modern tools (including AI) to quickly validate ideas.
• Work closely with Product and Engineering to bring experiments to production.
• Analyze experiment results and turn them into clear next steps.
• Maintain a high standard of quality and attention to detail across all experiments and UI/UX changes.
• Take ownership of improving key parts of the user journey end-to-end.

Growth, CRO Specialist

Frontend Engineer

• Create UI concepts from scratch based on product requirements, references, or ideas.
• Use AI-powered UI tools (Claude, v0.dev, Figma AI, etc.) to accelerate design exploration and prototyping.
• Implement UI using Next.js 16+, TypeScript, and Tailwind.
• Build reusable component-based UI structures.
• Take full ownership of UI delivery - from idea to final implementation.
• Implement and manage client-side state and server state using Zustand and TanStack React Query.
• Integrate and maintain A/B testing solutions.
• Add and maintain UI animations using Framer Motion.

UX/UI Frontend Developer

• Implement AI-powered product features and workflows based on specifications from senior engineers.
• Write, iterate on, and manage production prompt templates, following established patterns for dynamic prompting and context injection.
• Integrate structured output schemas (JSON mode, function calling, Zod/JSON schemas) to ensure AI responses are predictable and application-ready.
• Build and maintain output enforcement mechanisms such as validators and repair loops under senior guidance.
• Participate in prompt experimentation workflows — drafting variants, running A/B tests across models via OpenRouter, and documenting results.
• Contribute to evaluation pipelines and help score prompt/model quality using Langfuse.
• Write clean, maintainable TypeScript code within the Next.js / Node.js stack.
• Participate in code reviews and incorporate feedback.
• Document technical decisions and system behaviour to support knowledge sharing.
• Collaborate with product, growth, data, and billing teams to deliver features on time.

Junior AI Engineer

Growth Marketing

• Develop and maintain a structured experimentation roadmap, continuously generating and prioritising hypotheses to improve email conversion rates and grow email marketing as a sign-up channel across all Ruby Labs brands.
• Ideate, design, and launch A/B and multivariate tests on subject lines, preview text, email copy, CTAs, send times, sequences, and full funnel flows, with a relentless focus on improving conversion metrics.
• Analyse test results with statistical rigour, extract clear insights, document learnings, and roll out winning experiments across all brands at scale.
• Continuously monitor competitors' email strategies to identify trends, gaps, and opportunities for Ruby Labs to capitalize on.
• Conceptualise and propose new email sequences, lifecycle flows, and campaign structures focused on driving sign-ups and conversions, collaborating with the email team on implementation.
• Track, report on, and own key growth KPIs including conversion rate, sign-up share from email, revenue per email, and lift from experiments.
• Work closely with the Email Lead, Email Marketing Specialists, Marketing Director, and Data Analysts to align on growth priorities and ensure experiments are properly instrumented and measurable.
• Identify and leverage opportunities within our email tooling (Customer.io, Mixpanel) to unlock new testing and segmentation capabilities that support growth goals.

Email Growth Manager

SEO Marketing

• Define and lead the SEO strategy across all Ruby Labs brands, ensuring a cohesive and prioritised approach to organic growth.
• Develop and execute strategies to ensure Ruby Labs products and brands are cited, recommended, and surfaced in responses generated by large language models including ChatGPT, Claude, Gemini, and more.
• Own the mission to dominate the first page of Google for all priority queries across our brands.
• Build and manage a high-quality, scalable link acquisition programme across all brands.
• Lead the effort to identify, monitor, and outrank unfavourable search results across all brand SERPs.
• Ensure all Ruby Labs websites are technically sound.
• Manage, and develop a small team of SEO professionals. Set clear goals, provide mentorship, review work, and build a high-performance team culture focused on results and continuous improvement.
• Define the KPIs and reporting framework for SEO across all brands. Deliver regular performance reports to the leadership team with clear insights, trend analysis, and forward-looking recommendations.
• Work closely with the marketing, product, and engineering teams across Ruby Labs brands to ensure SEO is embedded into every relevant workstream.

Product Manager

UX Researcher

Senior Full-Stack Engineer

AI Engineer

Junior–Mid Full Stack Engineer

Growth, CRO Specialist

AI Engineer

UX/UI Frontend Developer

Junior AI Engineer

Email Growth Manager

Head of SEO