Full Stack Developer

🔥 16 hours ago

🇺🇦 Ukraine – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 11%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Rounds

WebsiteLinkedInAll Job Openings

51 - 200 employees

🤖 Artificial Intelligence

🛍️ eCommerce

Artificial Intelligence • eCommerce

Rounds is a transformative technology company focused on turning mobile assets into businesses. Utilizing cutting-edge machine-learning technology, Rounds identifies and optimizes mobile assets, while its team of experts offers strategic direction and support to maximize business success. The company aims to revolutionize the mobile industry through its innovative solutions and human capital expertise.

📋 Description

• Architect, build, and maintain scalable backend services and core platform systems in Go and NodeJS/TS • Design and ship production-grade AI/LLM integrations, intelligent features, and internal tools • Develop intuitive, responsive React user interfaces for complete end-to-end functionality • Use AI tools and agents such as Cursor, Claude, and GitHub Copilot for coding, testing, and system design • Collaborate with team members to assess architecture risks, estimate timelines, and optimize system performance • Complete the recruitment process, including an HR interview, take-home challenge, technical interview, and final interview

🎯 Requirements

• 5+ years of commercial experience building and running large-scale, production systems • 3+ years of production experience with Go/NodeJS/TS on the backend, or strong production experience with another backend language such as Java or C# • Hands-on production experience building AI/LLM-powered product features, including RAG pipelines, agentic workflows, LLM API integrations, or prompt-driven features • Working proficiency in React or a similar modern UI framework • Comfort moving between frontend and backend code • Experience with cloud platforms and core services, such as AWS or GCP • Experience with at least two of MySQL, PostgreSQL, MongoDB or other NoSQL databases, and Redis • Excellent written and verbal communication skills in English • Nice-to-have: broader ML/data science experience beyond LLM-based features • Nice-to-have: experience fine-tuning models or working with model evaluation/observability tooling and building harnesses • Nice-to-have: prior contributions to open-source projects or libraries

🏖️ Benefits

• Freelance, full-time engagement • Remote work • Opportunity to work with cutting-edge AI technology and mobile asset optimization • Use of modern AI tools and agents such as Cursor, Claude, and GitHub Copilot