[Hiring] Senior Java Engineer @Careers at Lineate

Role Description

Design, develop, and maintain scalable, high-performance backend services using Java and Spring Boot.

• Take ownership of complex technical challenges, from identifying problems and proposing solutions to implementation and production delivery.
• Contribute to architectural decisions and continuously improve system performance, scalability, and reliability.
• Develop and optimize APIs, microservices, integrations, and event-driven systems using Kafka.
• Proactively identify technical bottlenecks, propose improvements, and drive engineering initiatives.
• Troubleshoot complex production issues and ensure high standards of code quality and maintainability.
• Participate in technical discussions, code reviews, and architectural planning.
• Collaborate with product and engineering teams to translate business requirements into reliable technical solutions.
• Contribute to the development and optimization of search functionality and AI-powered features as needed.

Qualifications

• 8+ years of hands-on software engineering experience, with deep expertise in Java and production-grade backend development.
• Strong proficiency in Java and Spring Framework / Spring Boot.
• Architect-level technical expertise, including the ability to design complex backend systems, evaluate architectural approaches, and make sound technical decisions.
• Strong understanding of distributed systems, microservices, scalability, performance optimization, fault tolerance, and reliability.
• Solid experience with Redis, MySQL, and Apache Kafka.
• Experience with reactive programming (preferably RxJava).
• Strong experience designing and developing APIs, backend services, and complex integrations.
• Proactive and self-driven mindset: ability to identify problems and opportunities, propose solutions, develop actionable plans, and take ownership of implementation.

Requirements

• Experience with Java 25+ (nice-to-have).
• Experience developing and optimizing high-performance search systems (nice-to-have).
• Hands-on experience with full-text search, vector search, or semantic search technologies (nice-to-have).
• Production experience with Vespa, OpenSearch, Elasticsearch, Weaviate, Pinecone, Milvus, Qdrant, or similar platforms (nice-to-have).
• Experience building Retrieval-Augmented Generation (RAG) solutions (nice-to-have).
• Familiarity with AI/ML infrastructure and pipelines, including integrating machine learning models into production services (nice-to-have).
• Experience with embeddings, ranking, indexing, recommendation systems, and AI-powered services (nice-to-have).
• Knowledge of cloud platforms and containerized environments (Docker, Kubernetes) (nice-to-have).
• Experience with observability, monitoring, and performance analysis tools (nice-to-have).
• Previous experience in Staff, Principal, or Architect-level engineering positions (nice-to-have).

Working Hours

Candidates must be available to overlap with the New York team from 9:00 AM to 1:00 PM ET. The remaining working hours are flexible.

Benefits

• Freedom to Develop - equal opportunity to learn and grow professionally.
• Clear career and professional path, strong performance management system.
• Social Benefits Package.
• Equipment.
• English lesson.
• Gym membership.
• All the advantages of working in an international IT company.
• Flexible vacation time.
• Fun and inclusive in-person and digital events.