5bluesoftware - Senior Full-Stack Engineer
Requirements
• 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). • Expert in the latest JavaScript technologies (Vue.js / React). • Proficient in Microservices and Spring Boot. • 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. • B.Sc http://B.Sc. in Computer Science or Software Engineering. • 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 Spec-Driven Development (SDD) and AI coding agents is a strong advantage.
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. • — 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.
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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