Full-Stack Developer
Job Description
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Join a fast-growing product company building an AI-powered B2B SaaS platform that helps organizations worldwide automate security, risk, and compliance workflows. The platform combines intelligent automation, real-time monitoring, and AI-driven insights to turn slow, manual processes into a smooth, continuously audit-ready experience. It serves startups, scale-ups, and enterprises, and is known for both its technology and a strong partnership-driven approach.
Requirements:
5+ years of frontend development with React, plus solid backend experience in Node.js (C#, Java, or C++ also relevant).
Strong command of modern frontend fundamentals — component architecture, state management, performance, and responsive UI.
Experience building and integrating REST APIs.
Working knowledge of relational and non-relational databases.
Familiarity with AWS or a similar cloud provider; understanding of microservices architecture.
Ability to own a feature or technical project end to end and drive it independently.
Strong software design fundamentals and a self-driven approach to problem-solving.
English — Upper-Intermediate level and above, with strong verbal and written communication.
Knowledge of containerization tools (Docker, Kubernetes) is an advantage.
Nice to have:
Experience developing high-scale SaaS products with polished, complex UIs.
Eye for UX and close collaboration with Product and design.
Understanding of CI/CD and QA automation processes.
Maturity with AI-assisted development — able to review and understand generated code rather than relying on it blindly.
Academic background in Computer Science, Software Engineering, or a related field.
Responsibilities:
Build intuitive, performant frontends in React and shape the platform's UI/UX architecture.
Implement backend logic and integrate with third-party APIs as part of full-stack feature delivery.
Participate in architectural decisions, research, and design for scalable, maintainable software.
Work directly with Product and stakeholders to shape requirements and break them into well-scoped tasks.
Mentor teammates, promote knowledge sharing, and uphold coding standards.
Continuously improve UI performance, scalability, and maintainability while keeping up with industry trends.
What we offer:
Flexible Work Environment: Opportunity to work remotely.
1:1 English Classes: Individual English language training to enhance your communication skills.
Premium Medical Insurance: Comprehensive health insurance to ensure your well-being.
Great Team: Work with a supportive, collaborative, and dynamic international team.
Equipment Provided: All necessary equipment supplied for efficient job performance.
Accounting Support: Full accounting assistance in Ukraine and Poland.
Paid Time Off: 18 days of Annual Vacation and 7 days of Sick Leave without a doctor's note.
Flexible payment system, which allows you to withdraw funds in one click and has about twenty withdrawal options.
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5Blue Software
View Company Profile5Blue Software (operating under 5bsoftware.com, legally 5Blue Software Ltd.) is a premier, enterprise-grade technology outstaffing, dedicated software engineering, and AI implementation powerhouse engineered to serve as the definitive, high-velocity R&D scale-up, staff augmentation, and fractional CTO-as-a-Service layer for tech startups, scaling mid-market companies, and global enterprise leaders across Israel, Europe, and North America. Founded with leadership from a deep tech background, the firm completely eliminates the severe systemic friction of modern engineering talent acquisition—where tech companies face crushing local developer shortages, burn critical financial runway on prolonged hiring cycles, and struggle with the complex compliance, payroll, and cultural management overhead of remote engineering units—by deploying a highly structured, fully managed nearshore and offshore talent optimization matrix. Moving far beyond traditional, passive recruiting agencies or low-signal freelance marketplaces, 5Blue Software natively unifies a vetted proprietary database of over 10,000 elite technical talents (spanning highly specialized engineering ecosystems across Ukraine and Central Europe), deep engineering leadership architecture audits, and a full-cycle, 6-step recruitment and onboarding framework into a high-availability R&D delivery ecosystem. Acting as an end-to-end operational shield, the company handles the entire cross-border administrative lifecycle—incorporating localized market research, multi-jurisdiction compliant payroll execution, strict employment law adherence, localized taxation management, and employee benefit programs—allowing clients to integrate elite dedicated engineering squads into their core codebases in under a fraction of standard timelines. The production-hardened firm serves as a long-term strategic R&D growth partner for prominent global tech titans and venture-backed innovators alike, maintaining an elite multi-year partnership with New York-based adtech giant Taboola (scaling their R&D node with over 20 dedicated data science, mobile, and backend engineers) alongside core programs for Qualcomm, Melingo, Session42, AllCloud, Browswear, and RxWare. Under the hood, its operational engine leverages advanced competency evaluation matrices, comprehensive technical coding assessments, and multi-cloud DevOps pipelines designed to deploy specialized talents across major tech stacks (including advanced Node.js backend nodes, React/Next.js frontend architectures, cross-platform iOS/Android mobile apps, and robust Python-driven machine learning models). The firm provides tailored AI agent architectures, predictive data analytics, and scalable SaaS foundations without reducing development velocity or disrupting internal team cultures. What sets 5Blue Software apart is its uncompromising dedication to replacing volatile, unvetted contractor hiring with absolute R&D predictability, legal-tier corporate compliance, and predictable scaling costs; by combining high-signal technical validation with total administrative support, the organization remains a definitive cornerstone of modern algorithmic outstaffing and global digital product engineering transformation.
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