Senior Java Developer
5Blue Software • Ukraine
Posted: July 9, 2026
Job Description
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.
Additional Content
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.