Job Overview
Location
Ukraine
Job Type
Full-time
Category
Full-Stack Engineer
Date Posted
May 8, 2026
Full Job Description
đź“‹ Description
- • Senior Full-Stack Developer (Next.js) role focused on building and scaling a profitable D2C platform used by hundreds of thousands of customers globally, processing large volumes of traffic and revenue monthly.
- • Take ownership of core product components from concept to deployment, collaborate with Product team to design scalable architectures, lead code reviews, mentor junior and mid-level developers, contribute to hiring and onboarding, maintain high code quality and application performance, set up and improve CI/CD pipelines, monitor and improve system stability and scalability, and help shape engineering culture as the team grows.
- • Ruby Labs is a leading tech company creating innovative consumer products across health, education, and entertainment industries, driving the future of consumer-led products with battle-tested, monetizing systems now entering rapid growth and expansion.
- • Opportunity to shape architecture, improve reliability, raise engineering standards, solve hard problems at scale (performance, resilience, product quality), gain ownership and accountability, and grow technically and professionally in a high-traffic, real-world environment.
🎯 Requirements
- • At least 4 years of experience with Next.js for full-stack application development
- • At least 2 years of experience with Next.js App Router
- • Strong expertise in JavaScript/TypeScript and modern ReactJS
- • Experience leading a small team in a continuous deployment environment
- • Experience with CI/CD pipelines, Docker, and cloud infrastructure (preferably AWS, Cloudflare)
- • Solid understanding of PostgreSQL and Redis, including performance tuning and schema design
- • Experience with A/B testing frameworks and using analytics to drive product decisions
- • Familiarity with CMS (preferably Payload)
- • Demonstrated ability to mentor other engineers and elevate team performance
- • Clear communication style, able to explain complex topics clearly and concisely
- • Proactive mindset, spotting issues before they become problems and taking ownership
- • Comfortable making technical decisions and defending them with logic and data
- • Experience leading teams or projects
- • Fluency in Russian and/or Ukrainian language
🏖️ Benefits
- • 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
Skills & Technologies
About Ruby Labs Ltd.
Ruby Labs Ltd. is a London-based product studio that builds and scales consumer subscription mobile and web applications. The company focuses on health, wellness, and productivity verticals, developing apps such as Hint, Able, and the award-winning fitness platform FitCoach. Using data-driven growth and proprietary technology, Ruby Labs rapidly prototypes, launches, and iterates products to serve millions of global users. The team combines engineering, product design, and performance marketing expertise to create sustainable digital businesses. Founded in 2018, Ruby Labs operates a portfolio of self-funded apps, emphasizing user privacy, scientific validation, and long-term customer value.
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