Jobs at Ruby Labs

Execute conversion rate optimization experiments by building landing pages and funnels, creating AI-assisted designs, configuring A/B tests, verifying tracking, managing experiment tickets, and supporting analysis. The role also contributes hypotheses based on funnel, competitor, and user behavior research, documents learnings, and collaborates with engineers. It is remote within approximately four hours of Central European Time and offers mentorship with growth toward a CRO Specialist role.

Own the full CRO experimentation pipeline for a D2C subscription product, including hypothesis development, prioritization, A/B test execution, funnel analysis, statistical evaluation, QA, conversion copy and layout creation, documentation, and reporting. Collaborate with data, product, and engineering teams, ensure rigorous test verdicts, and mentor a junior CRO specialist in a remote async environment.

Build and ship end-to-end features across a Next.js and TypeScript monorepo, Fastify and Payload CMS backend, PostgreSQL, and Cloudflare Workers. Responsibilities include feature development, third-party integrations, testing, performance optimization, security, observability, bug resolution, code review, and production ownership. The role requires autonomous task delivery, clear communication, adherence to Feature-Sliced Design conventions, and responsible use of AI development tools.

Own the UI/UX quality of a consumer subscription product, including design decisions, feature exploration, implementation, design-system consistency, and final polish. Supervise developers’ UI/UX work and ensure shipped output meets a high standard. Use AI-first workflows and implement designs with React, Next.js, Tailwind CSS, and TypeScript in a fully remote, async environment.

Own the architecture, development, native platform integrations, release pipeline, permissions, signing, updates, telemetry, and reliability of a cross-platform Electron desktop application. Build TypeScript, Swift, and C++ components integrating system audio, accessibility APIs, overlays, global shortcuts, and operating-system services across macOS and Windows. Serve as the senior desktop engineering authority and troubleshoot production issues.

Perform manual and automated QA for web, Android, and iOS applications. Design functional, regression, exploratory, API, database, and end-to-end tests using Playwright, TypeScript, Postman, and SQL. Investigate customer-reported issues, validate subscription and payment flows across integrated systems, maintain CI/CD quality gates, document defects, and prioritize risks. Collaborate with engineers and product managers to improve product quality.

Develop and manage digital advertising creatives across consumer brands. Lead ideation, coordinate designers and user acquisition teams, oversee production timelines, analyze creative performance, conduct competitor research, and run A/B testing to improve conversion and customer acquisition. The role also requires reporting insights, facilitating collaboration, and applying emerging trends and AI tools to creative production.

Own the complete conversion rate optimization cycle across acquisition, activation, retention, and monetization. Responsibilities include funnel and product analysis, hypothesis generation, high-fidelity wireframing and visual specifications, experiment design, engineering collaboration, statistical analysis, rollout decisions, roadmap prioritization, and stakeholder communication. The role emphasizes AI-enabled workflows, rapid iteration, measurable performance improvements, and independent ownership within a remote, fast-paced environment.

Lead and scale paid acquisition for a D2C subscription product: define UA strategy, build processes/SOPs, manage budgets and ROAS, run testing and geo expansion, partner with product/creative/analytics, and hire/lead a UA team.

Build and maintain dbt-based analytical data models using SQL and cloud data warehouses such as BigQuery and ClickHouse. Implement data quality testing, documentation, lineage, governance, and performance improvements. Collaborate with data engineers, analysts, product managers, and marketing teams to create reliable datasets and resolve reporting inconsistencies. Support data pipeline monitoring, metric standardization, and continuous improvement of modeling frameworks.

Manage and optimize user acquisition campaigns across Meta and Snapchat. Launch campaigns, test and adapt creatives, optimize bids, budgets, audiences, placements, and funnels, and analyze cohort and ad performance. Develop lookalike and interest-based audiences, identify winning creative concepts, scale successful campaigns, monitor performance, and provide reporting and insights. Collaborate with Creative Managers while maintaining disciplined campaign structures and testing processes.

Own and scale Facebook as a performance marketing channel for a D2C subscription product. Responsibilities include managing high-volume campaigns and budgets, optimizing CPA and ROAS, testing audiences, bids, placements, creative, and geographies, analyzing performance at bid level, building reporting models, developing market expertise, and automating workflows with AI. The role requires autonomous channel ownership, data-driven decision-making, and experience driving profitable subscription growth across multiple countries.

Lead the zero-to-one launch of a D2C consumer privacy and security subscription product. Own market research, positioning, MVP scope, roadmap, engineering execution, acquisition funnel, user experience, analytics, experimentation, monetization, and retention. Partner closely with engineering, design, data, marketing, and senior leadership to launch, optimize conversion and retention, and grow the product into a category leader.

Own the roadmap, monetization, retention, ARPU, and subscription lifetime value for a D2C subscription product. Lead product strategy, pricing experiments, user research, analytics, engagement initiatives, UI/UX decisions, and engineering collaboration. Define metrics, analyze cohorts, run A/B tests, improve conversion, and partner with marketing and CRO. The role requires strong ownership, analytical decision-making, technical communication, and daily use of AI tools.

Manage, launch, and optimize paid acquisition campaigns on Meta and SnapChat. Test and scale creatives, analyze cohort and ad performance, build audience and lookalike campaigns, monitor KPIs (eCPA, ROAS, CPM), and collaborate with creative teams to improve ROI across global funnels.

Lead end-to-end ad creative for a D2C subscription AI product: develop concepts, run high-velocity production and structured A/B tests across major ad networks, analyze creative-level performance, codify winning patterns, and collaborate closely with User Acquisition to scale top-performing concepts.

Owner of marketing-focused data engineering: build and maintain integrations, tracking, and pipelines across BigQuery, ClickHouse, GCS, and external systems; troubleshoot tracking, payment, and data quality; collaborate with cross-functional teams and document data flows.

Lead end-to-end conversion optimization to drive measurable growth: analyze funnels, generate hypotheses, design high-fidelity UI/UX mockups, run statistically rigorous tests, partner with engineers on implementation, document learnings, and present results to stakeholders. Goal-driven role with ownership of performance outcomes and rapid iteration.

Lead and scale Google and Microsoft Ads across multiple brands: own execution, audits, budget allocation, bidding, and measurement. Coach and hire acquisition managers, set account standards and governance, manage policy and compliance, and build AI-first playbooks and Claude-based workflows to increase speed, quality, and account safety.

Lead and scale a performance creative design team, owning quality, speed, production stack, and AI-assisted workflows. Translate UA performance data into creative direction, build reusable systems and templates, manage localization QA, and coach designers to increase output without increasing headcount.