Senior Java Developer

About Us: 5Blue Software is an Israeli-Ukrainian software development company specializing in custom software development, staff augmentation, dedicated engineering teams, AI solutions, and CTO-as-a-Service. We help startups and mid-sized companies scale faster with vetted engineering talent across Europe. About the project: Our client is enabling a world where everyone and everything can be intelligently connected. As the world's leading wireless technology innovator, our client continues to push the boundaries of what's possible across devices and networks to enable next-generation experiences and drive digital transformation. Our client delivers breakthroughs in 5G, Wi-Fi and AI. But that's just the beginning. As a Software Engineer for our client's Edgewise platform, you will join a cutting-edge AI-native development group building cloud-edge software, automation, and optimization applications that help the world's tier-1 cellular network operators improve network performance at scale. Responsibilities: Work with a group of talented engineers providing innovative solutions to Cellular Networks problems Design and implement complex algorithms Develop and maintain high-performance, scalable, and reliable software systems Collaborate with cross-functional teams to identify and solve complex software problems Work in an AI-native engineering environment that uses modern coding agents and spec-driven development to accelerate high-quality delivery Requirements: B.Sc . in Computer Science, Software Engineering, or a related field 6+ years of experience in software development with Java Strong experience designing and implementing complex algorithms and software architectures Experience working with microservices architecture Experience developing large-scale data applications and advanced SQL querying Excellent problem-solving and analytical skills Hands-on experience using AI coding tools (e.g., Codex, Claude Code, GitHub Copilot, or similar AI agents) as part of the software development lifecycle Strong communication and interpersonal skills Upper-Intermediate English level or higher Technology stack: Java, Spring Boot, microservices, Kubernetes, Linux, cloud platforms, SQL/NoSQL databases, Vertica, large-scale data processing, network automation, and AI-assisted development workflows Advantages: Experience building optimization and analytics modules Experience with cloud computing platforms such as AWS, Azure, or GCP Familiarity with Clean Code, SOLID, and high software engineering practices Experience working with microservices architecture Experience with Spring and Spring Boot frameworks Experience with NoSQL and relational databases Experience working with Vertica or other column-oriented databases Experience with Linux and Kubernetes (k8s) Experience with Spec-Driven Development (SDD) and AI coding agents — a strong advantage 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.