Senior Java Backend Developer / Solution Architect

25 000 - 42 000 PLNNet per month - B2B
Java

Senior Java Backend Developer / Solution Architect

Java

Aleja Pokoju 18, Kraków

Ready4S

Full-time
B2B
Senior
Remote
25 000 - 42 000 PLN
Net per month - B2B

Tech stack

    English

    B2

    Java

    advanced

    Data modeling

    advanced

    REST API

    advanced

Job description

About the Project


We are seeking a Senior Java Backend Developer with strong architecture and data modeling skills, who will also play a key role in collaborating with business stakeholders and supporting the due diligence process for a strategic platform transformation.

The goal is to replace a complex and incomplete legacy system with a modern, clean REST API layer that integrates with Palantir Foundry. You will work at the intersection of telecom-standard data models (TMF) and platform-native object modeling (Palantir).

Beyond implementation, you will actively contribute to architectural decisions, validate design assumptions with business stakeholders, and ensure that the system meets both functional and strategic objectives.

This is an opportunity to co-shape the architecture and business alignment before the first production release, and to take part in a long-term modernization effort.


Responsibilities

  • Act as a senior engineer and architectural partner, helping shape the system design and technical roadmap

  • Participate in due diligence activities, validating requirements and aligning technical solutions with business needs

  • Design and build REST APIs in Java that act as a bridge between an orchestration application and Palantir Foundry

  • Translate TMF-based logical models into physical object structures within Palantir

  • Collaborate with platform engineers, architects, and business stakeholders to define scalable data access and integration patterns

  • Work with SDKs (not just REST APIs) to interact with Palantir's backend

  • Ensure clean code practices and architecture-first design from the start


Requirements

  • 7+ years of experience in Java backend development

  • Proven experience in system and API architecture design

  • Strong background in data modeling – logical and physical

  • Experience in working closely with business teams and supporting due diligence processes

  • Familiarity with domain-driven design and telecom data models (e.g., TMF) or willingness to learn quickly

  • Experience working with SDKs or platform-specific APIs

  • Technical education (engineering degree or equivalent in IT, computer science, or related field)


Nice to Have

  • Knowledge of Palantir Foundry

  • Understanding of TMF (TeleManagement Forum) specifications

  • Experience with platform-based development environments (e.g., Salesforce, Mendix, OutSystems)

  • Familiarity with API security (OAuth 2.0, tokens)


Why Join This Project?

  • High-impact senior role with strong influence on architecture and business alignment

  • Involvement in due diligence and early design decisions before v1 goes live

  • Long-term potential

  • No legacy maintenance – focus on clean code, scalability, and clarity

  • Exposure to Palantir Foundry – one of the most in-demand enterprise data platforms

Published: 04.09.2025
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Senior Java Backend Developer / Solution Architect

25 000 - 42 000 PLNNet per month - B2B
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Senior Java Backend Developer / Solution Architect

Aleja Pokoju 18, Kraków

Ready4S

25 000 - 42 000 PLNNet per month - B2B
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Salary
25 000 - 42 000 PLN
Net per month - B2B
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