Deputy Head of Engineering (Node.js / Next.js)
•Ruby Labs· 4h
EngineeringFull-timeWorldwide
4h ago
Ruby Labs·about 1 month ago
Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/
Ruby Labs is looking for a Senior CRO Manager for one of its products "GetQR" with deep experience optimizing subscription-based D2C SaaS or SMB SaaS products, especially those that use low-cost trial funnels (e.g., $1 trial for 7 days, then $40 per month).
Your mission is straightforward: achieve 15%+ conversion growth per quarter across the full GetQR funnel—from landing page → QR creation flow → sign-up → trial start.
This is not a “recommend things from the sidelines” role. You will own the entire CRO engine, end-to-end: data, insights, hypotheses, design, experimentation, QA, and rollout. You are fully accountable for performance outcomes.
GetQR moves fast, ships fast, and rewards top performers directly for the measurable impact they deliver.
Own full-funnel CRO cycles: research → hypothesis → high-fidelity mockups → A/B test execution → rollout.
Analyze subscription funnels with low-cost trials, identifying friction at each stage (trial start, upgrade, churn risks).
Conduct competitor and market analysis across D2C SaaS and SMB SaaS products with similar trial structures.
Design creative, high-impact UI/UX variations that drive stronger trial starts and subscription conversions.
Collaborate with engineering to ensure pixel-perfect implementation and rapid experimentation velocity.
Use statistical rigor to validate test results and confidently scale winning variants.
Build a systematic testing roadmap that compounds conversion gains over time.
Present insights and results to leadership clearly and persuasively.
3+ years of hands-on CRO experience working with subscription-based SaaS funnels (D2C or SMB).
Direct experience optimizing low-cost trial flows (trials or discounted intro periods).
Proven, documented record of meaningful conversion lifts in similar business models.
Strong UI/UX sensibility and the ability to produce high-quality mockups that communicate test concepts clearly.
Proficiency in GA4, Mixpanel, GrowthBook, or equivalent analytics & experimentation tools.
Extreme attention to detail, with a bias for rapid testing and iteration.
Ownership mentality: comfortable being fully accountable for performance.
Fluent English with excellent written and verbal communication skills.
Experience with BI tools (Tableau, Looker, or similar).
Exposure to marketing attribution models, UTM parameters, and ROAS measurement.
Strong project management skills with the ability to prioritize and execute quickly.
Bachelor’s degree in a relevant field.
Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.
Discover the perks of being part of our vibrant team! We offer:
Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1tzxGX4Uu7Ts_HCLFXESKLnKaaBfVCPf1f9AYZPrkjJM/preview?tab=t.0
Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!
After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:
Recruiter Screening (40 minutes)
Home Task Assignment
Technical Interview (60 minutes)
Final Interview (30 minutes)
At Ruby Labs, we move fast, aim high, and expect the same from our team. We’re not here to play small—we’re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.
This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.
Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success.
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