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Updated 2026-06-26 10:00 UTC·© 2025–2026 RoleSuite
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FullStack Java Engineer

Qualysoft · Bucharest

About Qualysoft
 
·        25 years of experience in software engineering, established in Vienna, Austria
·        Active in Romania since 2007, with office in central Bucharest (Bd. Iancu de Hunedoara 54B)
·        Delivering End to End IT Consulting Services  - From Team Augmentation and Dedicated Teams to Custom Software Development 
·        We deliver scalable enterprise systems, intelligent automation frameworks, and digital transformation platforms
·        Cross-industry experience by sustaining global players in BSFI (Banking, financial services and insurance), Telecom,Retail & E-commerce, Energy and Utilities, Automotive, Manufacturing, Logitics, High Tech
·        Global Presence: Switzerland, Germany, Austria, Sweden, Hungary, Slovakia, Serbia, Romania, and Indonesia
·        International team of 500+ software engineers
·        Strategic partnerships: Microsoft Cloud Certified Partner, Tricentis Solutions Partner in Test Automation and Test Management, Creatio Exclusive Partner, Doxee Implementation Partner
·        Powered by cutting-edge technologies: AI, Data & Analytics, Cloud, DevOps, IoT, and Test Automation.
·        Project beneficiaries ranging from large-scale enterprises to startups
·        Stable growth and revenue increase year over year, a resilient organisation in volatile IT market conditions
·        Quality-first mindset, culture of innovation, and long-term client partnerships
·        Global and local reach – trusted by key industry players in Europe and the US
 

Responsibilities

• Build and maintain backend services using Java 21, Spring Boot, and asynchronous processing patterns.
• Design and enhance LLM-based pipeline stages for classification, matching, risk assessment, summarization, and draft generation.
• Implement robust structured output validation, retry mechanisms, and error handling for model interactions. 
• Optimize semantic search using PostgreSQL and pgvector to enable high-quality retrieval of legal precedents.
• Extend data models and database migrations with backward-compatible schema changes.
• Build and enhance frontend workflows using React and TypeScript, including dashboards, document browsers, extraction review interfaces, and defense generation features. 
• Integrate real-time progress updates through WebSockets.
 • Maintain secure authentication and authorization using Keycloak, OIDC, and JWT.
• Develop and maintain backend and frontend test coverage while supporting CI quality gates.
 • Improve observability through distributed tracing, structured logging, and operational dashboards.

Qualifications

• 5+ years of software engineering experience working on production systems. • Strong experience in Java backend development, including Spring Boot, REST APIs, and data access layers.
• Solid PostgreSQL expertise, including schema design and query optimization. • Hands-on experience integrating LLM APIs (OpenAI, Azure OpenAI, Anthropic, or similar).
 • Experience with semantic search and vector retrieval technologies (pgvector, Pinecone, Weaviate, or similar).
• 3+ years of experience with React and TypeScript development.
• Practical experience implementing OAuth, OIDC, and JWT authentication and authorization flows.
• Strong testing discipline, including unit, integration, API, and contract testing. 

Nice to have

• Experience with Azure services, including Azure OpenAI, Document Intelligence, PostgreSQL, and Container Apps.
• Experience with Docker, Docker Compose, and CI/CD pipelines.
• Domain knowledge in legal tech, financial services, or other highly regulated industries.
• Familiarity with observability stacks, including OpenTelemetry, centralized logging, and monitoring dashboards. 
• Familiarity with LLM evaluation, guardrails, and regression testing tools such as Promptfoo, DeepEval, Langfuse, Giskard, or Guardrails. 

Full-Stack pay context

Based on 369 disclosed Full-Stack salaries on RoleSuite, the role pays a median of $184K/year, with most offers between $147K and $211K (10th–90th percentile: $114K–$246K).

See the full Full-Stack salary breakdown →
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