Java FullStack Developer

About Altimi

Altimi is a technology acceleration partner with impressive experience spanning over 20 years, specializing in the successful delivery of software development projects for international customers. We are based in Poland. Our main area of operation is the DACH region and Scandinavia, where we are known for providing top-notch software development services.

Our primary focus are managed services for companies seeking to accelerate growth, solve complex tech problems, build MVP/POC and/or modify legacy infrastructures.

The main area of competence include Product & Application Engineering, DevOps, Cloud Security & Managed Services and AI & Data Enablement.  

Role Overview

The Senior Technical Expert plays a pivotal role in developing and evolving the company’s Data Marketplace—a platform built on Data Mesh principles. The focus is on creating a seamless “shop‑for‑data” experience and guiding the transition from a Modular Monolith to a Microservices‑based ecosystem. Using a modern tech stack (Java 21, AWS, AI‑enhanced search), the position supports intuitive and FAIR access to Digital Assets across the organization.

The role calls for forward‑looking architectural thinking, a strong data‑product mindset, and attention to metadata, lineage, and discoverability. Collaboration with UX and Frontend teams ensures solutions remain user‑focused. Architectural choices are grounded in pragmatism, balancing the strengths of a monolith with the scalability of microservices. Curiosity for semantic and AI‑driven search technologies helps shape the next stage of the platform’s evolution.

The Roadmap

• 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

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

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

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 capabilities into our search engine (Sinequa), enabling users to explore data assets via natural language and intelligent discovery.

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

• Cloud Leadership: Design and maintain scalable infrastructure within AWS, 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.

Requirements

• Modern Java (21+), Spring Boot 3.x

• Understanding of SPAs, Integration patterns, Enterprise Networking

• Modular Monoliths & Microservices, Data Mesh concepts

• PostgreSQL, MongoDB

• AWS (EC2, RDS, Lambda, EKS)

Join for a role, stay for the development: More than 40% of our team is working with us longer than 5 years. Explore diverse domains, projects and modern technologies through internal mobility.