Senior Technical Expert Java

As a Senior Technical Expert, you will be the technical cornerstone of our Data Marketplace —a platform built on Data Mesh principles. You will guide the evolution of a "shop-for-data" experience, moving our architecture from a robust Modular Monolith to a distributed Microservices ecosystem. You’ll be working with a cutting-edge stack (Java 21, AWS, AI-enhanced search) to ensure that "buying" digital assets is as seamless for our users as a consumer e-commerce experience. The end-goal is to build a comprehensive solution that enables FAIR data access to Digital Assets across the organization.

Key Responsibilities

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Architectural Evolution: Lead the strategic transition from a modular monolith to microservices, ensuring domain boundaries are respected and performance remains high. Take ownership of the development of new components and ideas as you cooperate with a multidisciplinary team to deliver end-to-end experiences to the End Users.

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Lead Development: Write clean, high-performance code using Java 21+ features (Virtual Threads, Pattern Matching) to handle complex data transactions.

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Search & AI Innovation: Work on the roadmap to integrate AI/LLM capabilities into our search engine ( Sinequa ), enabling users to explore data assets via natural language and intelligent discovery.

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Data Stewardship: Oversee the polyglot persistence layer, optimizing PostgreSQL for relational integrity and MongoDB for flexible metadata storage.

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Cloud Leadership: Design and maintain scalable infrastructure within AWS , ensuring our CI/CD pipelines and deployment strategies are best-in-class.

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Mentorship: Act as a force-multiplier for the team, conducting rigorous code reviews and setting the standard for technical excellence.

Requirements

Technical Requirements

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Strong experience with modern Java (21+) and Spring Boot 3.x

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Hands-on experience with messaging technologies, ideally Solace

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Good understanding of SPA architecture and frontend development with Angular and TypeScript

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Familiarity with integration patterns and enterprise networking

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Solid architectural knowledge, including modular monoliths, microservices, Data Mesh, and Domain-Driven Design

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Experience working with PostgreSQL, MongoDB, and search platforms such as Sinequa

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Practical experience with AWS services, including EC2, RDS, Lambda, and EKS

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Experience with Infrastructure as Code, preferably Terraform

Who You Are

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A Technical Visionary: You don't just solve today's bugs; you anticipate where the architecture will break two years from now.

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Data-Centric: You understand that in a Data Mesh, the product is the data itself. You care about metadata, lineage, and discoverability.

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User-Centered: You care about the end users experience and can cooperate with UX and Frontend developers to map and deliver first-in-class solutions.

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Pragmatic Architect: You know when to stick with a monolith for speed and exactly when the "swell" justifies a move to microservices.

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AI Curious: You are excited about moving beyond keyword search into the realm of semantic search and AI-driven data exploration.

The Roadmap: What You’ll Build

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Phase 1: Refine the modular boundaries of the current Java 21 application. Deliver scalable and extensible transaction modules enabling Request-to-Use processes within the DataMarketPlace

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Phase 2: Orchestrate the "Great Migration"—consolidate existing Marketplace ecosystems into DataMarketPlace on-boarding tens of thousands of assets and thousands of users.

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Phase 3: Integrate AI-driven exploration features atop our Sinequa search layer.

Salary:

22 000 - 33000 PLN + VAT (B2B)

Originally posted on Himalayas