Middle Java Developer (AI)

Location: European Union; the role includes office-related benefits and is offered as a B2B engagement.

Company

hirify.global is a software development and consulting company delivering technology solutions to clients across North America and Europe, including backend development, data science, fintech, artificial intelligence, and blockchain.

What you will do

• Build and evolve enterprise applications and maintainable backend services.
• Design and integrate REST APIs and synchronous or asynchronous service communication.
• Integrate LLM-powered features into real applications using services such as OpenAI, AWS Bedrock, or Google Gemini.
• Own features from implementation through release and maintain long-lived enterprise codebases.
• Use AI coding assistants daily, critically reviewing and validating generated code.

Requirements

• 3+ years of commercial software development experience with Java.
• Strong knowledge of Java 17+, Spring Boot, Spring Data, and Maven or Gradle.
• Experience with microservices, modular or hexagonal architecture, REST APIs, SQL, PostgreSQL, JPA, and Hibernate.
• Experience with Kafka or another message broker, including synchronous and asynchronous communication.
• Experience writing unit, integration, and API tests with JUnit, Mockito, and supporting tools.
• Proficiency with Git, code review workflows, CI/CD pipelines, Docker, and Kubernetes.
• Experience with AWS or another cloud platform and understanding of logging, metrics, and distributed tracing.
• Ability to independently handle medium- to high-complexity tasks, own feature delivery, and maintain long-lived enterprise codebases.
• Hands-on experience integrating LLMs into real applications and English proficiency at B2 level or higher.

Nice to have

• Experience with Kotlin, React, TypeScript, or Angular.
• Experience with RAG, embeddings, vector search, structured outputs, tool or function calling, and context management.
• Familiarity with pgvector, Qdrant, Weaviate, Pinecone, Elasticsearch, LangChain, or LangGraph.
• Production experience operating LLM applications, including latency, token costs, rate limits, retries, caching, hallucinations, and prompt-injection risks.
• Knowledge of LLM security, evaluation, quality monitoring, guardrails, content filtering, moderation, and abuse protection.
• Ability to take broader ownership of task breakdown, estimation, implementation, and release.

Culture & Benefits

• Full-time workload with a B2B contract.
• Three sick days per year and medical insurance.
• Food and commuting compensation, English classes, and an All Sports program.
• Active developer community with regular meetings and opportunities to grow as a technical mentor or manager.
• Office near Petrovshchina metro station, with team-building events, corporate activities, sports competitions, and games.
• Employee discounts, snacks and drinks, and a recreation room with PlayStation 5, Xbox, and board games.