Senior Technical Expert Java

stermedia; Wrocław; On-site; PLN 245,520 - 368,280; Full time

Job summary

A technology solutions firm is seeking a Senior Technical Expert to drive the evolution of their Data Marketplace. You will orchestrate a transition to a microservices architecture, write high-performance Java code, and integrate AI into the search engine. Ideal candidates are experienced in modern Java and AWS, with a passion for data-centric solutions and enhanced user experiences. The role offers a competitive salary of 22,000 - 33,000 PLN+ VAT (B2B) and is based in Wrocław, Poland.

Qualifications

• Strong experience with modern Java (21+) and Spring Boot 3.x.
• Hands-on experience with messaging technologies, ideally Solace.
• Good understanding of SPA architecture and frontend development with Angular and TypeScript.
• Familiarity with integration patterns and enterprise networking.
• Solid architectural knowledge including modular monoliths and microservices.
• Experience with PostgreSQL, MongoDB, and search platforms like Sinequa.
• Practical experience with AWS services including EC2, RDS, Lambda, and EKS.
• Experience with Infrastructure as Code, preferably Terraform.

Responsibilities

• Lead the strategic transition from a modular monolith to microservices.
• Write clean, high-performance code using Java 21+ features.
• Work on integrating AI capabilities into our search engine.
• Oversee the polyglot persistence layer for data integrity.
• Design and maintain scalable infrastructure within AWS.
• Conduct rigorous code reviews and mentorship for the team.

Skills

Modern Java (21+)

Spring Boot 3.x

Messaging technologies

SPA architecture

Frontend development with Angular and TypeScript

PostgreSQL

MongoDB

AI/LLM capabilities

AWS services

Infrastructure as Code (Terraform)

Job description

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

• 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.

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

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

• Data Stewardship:Oversee the polyglot persistence layer, optimizing PostgreSQLfor relational integrity andMongoDBfor flexible metadata storage.

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

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

Technical Requirements

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

• Hands-on experience with messaging technologies, ideally Solace

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

• Familiarity with integration patterns and enterprise networking

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

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

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

• Experience with Infrastructure as Code, preferably Terraform

Who You Are

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

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

• 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.

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

• 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

1. 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

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

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

Salary:

22 000 - 33000 PLN+ VAT (B2B)