5Blue Software

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.

Senior Full-Stack Engineer

Location

Poland + 1 moreAll locations: Poland | Ukraine

Posted

1 day ago

Salary

0

Seniority

Senior

Job Description

Senior Full-Stack Engineer

5Blue Software

Role Description 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. - 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. - Have end-to-end ownership: design, build, test, ship, and maintain full-stack solutions for large-scale products. - Leverage modern development pipelines, CI/CD, testing, and code quality practices to deliver high-impact solutions. - Work in an AI-native engineering environment that uses modern coding agents and spec-driven development to accelerate high-quality delivery. Qualifications - B.Sc. in Computer Science or Software Engineering. - 7+ years of experience as a full-stack developer (5+ years on the backend and 3+ years on frontend are also suitable). - Stable long-term involvement in projects for 2+ years. - Strong communication and interpersonal skills. - Fluent English. - Fluent in server-side technologies and architecture (Java / Kotlin). - Proficient in Microservices and Spring Boot. - Expert in the latest JavaScript technologies (Vue.js / React). - Strong understanding of HTML5, CSS3, and responsive, cross-browser development. - Experience integrating frontend applications with REST or GraphQL APIs. - Experience with Git and modern CI/CD workflows. - Experience with building large-scale platforms. - Experience with SQL (MySQL, Postgres) and/or NoSQL (Vertica) DB types. - Experience with cloud development and deployment (AWS, GCP or Azure). - Hands-on experience using AI coding tools such as Codex, Claude Code, Copilot, or similar agents as part of the software development lifecycle. - Self-driven, independent, and a strong team player. Requirements - Excellent problem-solving skills. - Experience working with big data applications using advanced SQL capabilities. - Familiar with Clean Code, SOLID and high software engineering practices. - Experience working with Vertica or other column-oriented databases. - Experience with Linux and Kubernetes. - Experience with Spec-Driven Development (SDD) and AI coding agents is a strong advantage. Benefits - 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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