Senior Java Developer (AI-Native)

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. About the role: This is a senior, architecture-oriented role for an engineer who combines strong hands-on Java development with system-level thinking. We're looking for someone who can own the design of complex, scalable systems end to end, treat AI coding agents as a core part of how they build, and act as a technical leader who continuously brings new approaches to the team. Responsibilities: Design system and service architecture for high-performance, scalable, and reliable software, with a solid understanding of the surrounding infrastructureTranslate complex and often ambiguous requirements into clear, robust, and scalable technical designsOwn the end-to-end delivery of complex features and modules — from design through implementation and productionWork in an AI-native engineering environment: effectively leverage modern coding agents and spec-driven development to accelerate high-quality delivery, and adapt or create solutions using AI toolsDesign and implement complex algorithmsProvide technical leadership — influence technical decisions, mentor peers, and raise the engineering bar across the teamCollaborate with cross-functional teams to identify and solve complex software problemsContinuously explore, evaluate, and introduce new technologies, tools, and engineering practices Requirements: B.Sc. in Computer Science, Software Engineering, or a related field6+ years of experience in software development with JavaStrong system architecture and design skills — proven experience designing scalable, distributed systems and understanding the underlying infrastructureDemonstrated ability to take complex requirements and turn them into well-structured, scalable technical designsStrong experience designing and implementing complex algorithms and software architecturesExperience working with microservices architectureExperience developing large-scale data applications and advanced SQL queryingHands-on experience using AI coding tools (e.g., Codex, Claude Code, GitHub Copilot, or similar AI agents) as an integral part of the software development lifecycle, including the ability to adapt and create solutions with themTechnical leadership potential — initiative, ownership, and the ability to drive technical innovationCuriosity and a genuine drive to continuously learn and adopt new technologies and approachesExcellent problem-solving and analytical skillsStrong communication and interpersonal skillsUpper-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, infrastructure and AI-assisted development workflows Advantages: Prior experience as a Tech Lead, Software Architect, or in a similar senior technical roleExperience building optimization and analytics modulesExperience with cloud computing platforms such as AWS, Azure, or GCPExperience with infrastructure design and Infrastructure-as-CodeFamiliarity with Clean Code, SOLID, and high software engineering practicesExperience with Spring and Spring Boot frameworksExperience with NoSQL and relational databasesExperience working with Vertica or other column-oriented databasesExperience with Linux and Kubernetes (k8s)Experience with Spec-Driven Development (SDD) and designing AI-enabled development workflows — 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.