Full-stack Java Engineer

diconium

Full-stack Java Engineer responsible for backend and frontend development within digital transformation projects. Collaborating with global teams to drive modernization and deliver high-quality software solutions.

Posted 7/3/2026full-timeBucharest • 🇷🇴 RomaniaMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AngularAWSAzureCloudDockerGoogle Cloud PlatformHibernateJavaJavaScriptKafkaKubernetesMavenNoSQLOraclePrometheusRabbitMQReactSpringSpring BootSpringBootSQLSvelteTypeScriptVue.js

About the role

Key responsibilities & impact

Take ownership of both backend (Java/Oracle) and frontend development within the project.
Contribute to the transition phase, including knowledge transfer from the external supplier and stabilization of existing systems.
Drive modernization initiatives across the stack — from the legacy ExtJS frontend to the Java/Oracle backend — and address performance bottlenecks.
Actively contribute to architectural decisions spanning backend services and frontend applications.
Design, build, and maintain scalable, maintainable, and high-performing software across the full stack.
Design, implement, and maintain scalable, modular, and accessible UI components.
Ensure clean integration between backend services and frontend applications, following API-first and BFF patterns.
Collaborate with Product Managers and Designers to validate ideas, estimate effort, and assess feasibility.
Deliver high-quality, production-ready features reliably and on time, end-to-end.
Support CI/CD pipelines and containerized deployments (Docker) for backend and frontend.
Help identify and mitigate technical and operational risks early.
Support rapid prototyping and technical validation before full implementation.
Design and implement REST APIs; integrate with internal and external systems.

Requirements

What you’ll need

Highly proficient in Java SE and modern Java coding principles.
Experience with the Spring Framework (not Spring Boot) — e.g. Spring Core, MVC, and Context.
Experience working on large, complex Java projects with extensive dependencies, using Maven (lifecycle and modules).
Skilled in database modeling (SQL & NoSQL); strong hands-on experience with Oracle (stored procedures, triggers, complex schemas 1000+ tables, migrations).
Proficient with Hibernate and Liquibase.
Builds REST APIs (OpenAPI); experience with event-driven services (Kafka, RabbitMQ, NATS) is a plus.
Strong proficiency in JavaScript and/or TypeScript.
Experience with at least one modern frontend framework (React, Angular, Vue.js, Svelte).
Development of modular, scalable, responsive UI components.
Focus on accessibility (a11y), performance optimization, and SEO.
Applies OWASP, secure coding, and threat-mitigation practices.
Strong in TDD, unit/integration/E2E testing, code reviews, and static analysis.
Advanced knowledge of Git and version control workflows.
Hands-on with AWS/Azure/GCP, cloud networking, and IAM.
Strong with Docker, Kubernetes, CI/CD pipelines, and Infrastructure as Code.
Experienced with monitoring and observability tools (Prometheus, ELK/EFK, OpenTelemetry).
Strong communication and stakeholder interaction skills.
Ownership-driven, customer-centric mindset.
Ability to learn quickly and adapt to change.
Strong problem-solving and time-management skills.

Benefits

Comp & perks

Professional & Personal Growth: Develop yourself both professionally and personally through training programs, free language courses, competence centers and an active tech community.
Flexible Work-Life Balance: Benefit from hybrid work, workation, flexible hours, parental support and sabbaticals.
Embrace Diversity & Sustainability: Engage in our Sustainability Hub, diverse communities, Diversity Taskforce and after-work activities.
Comprehensive Benefits: Enjoy public transport tickets, job bikes, access to exclusive Volkswagen employee conditions when leasing or purchasing a vehicle, health offers, supplementary insurances, a pension plan and various discounts.

ATS Keywords

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Hard Skills & Tools

Java SESpring FrameworkREST APIsSQLNoSQLOracleJavaScriptTypeScriptTDDGit

Soft Skills

Strong CommunicationProblem-SolvingTime ManagementCustomer-Centric MindsetAdaptability