Tech jobs

Calypso Java Backend Engineer (Mid/Senior) – Remote

Builds and maintains Java 17+ backends with Spring/Spring Boot 3.x, integrates with Nasdaq Calypso, messaging systems, and databases.

Java Jest JUnit Spring

140 – 190 PLN / hr

LTM

Java Backend Engineer - Hybrid Krakow | Cloud Microservices

Open 24d EuropeContract

Build and maintain secure, scalable Java microservices in a global team, tackling technical debt and improving cybersecurity while working 2–3 days weekly in Kraków.

Automation Java

VM.PL

Senior Java Backend Architect - Remote | Flowable SaaS

API Api Design BPMN Cloud Cloud Native +7 skills

Designs and builds a cloud-native, multi-tenant Java backend using Spring Boot and Flowable BPMN for EU-compliant case management and document handling.

Vonage

Java Backend Architect: Cloud Microservices

Open 24d Europe

AWS Cloud Docker Helm Java +5 skills

Design and build scalable microservices for a cloud communications platform using Java, Kotlin, Spring Boot, and reactive programming on AWS and Kafka.

Randstad Polska

Open 24d HybridEuropeContractSenior

Java Backend Engineer & Systems Analyst

AI Angular Data Warehousing Java Microservices +1 skills

Senior Java backend engineer analyzing and optimizing complex microservices for a global fintech firm, using AI tools and collaborating across international teams.

PMSolutions

Senior Java Backend Engineer - Cloud Apps (Lodz)

Senior Java backend engineer designs and builds cloud applications using Core Java and OOP, delivering high/low-level designs for a client project.

AWS Cloud Java OOP

PMSolutions

Java Backend Engineer — Flexible Hours (Łódź)

Open 24d Europe

Designs and builds backend features in Java for a Łódź-based tech company, working with flexible hours.

Senior Java Backend Engineer, Cloud-Native BaaS

Builds cloud-native banking services using Java, designing scalable microservices for a digital bank’s BaaS platform.

Cloud Java

DCG Poland

Senior Java Backend Architect - Spring Boot, Kafka, JPA

Design and build a backend platform for a lending application using Java, Spring Boot, Kafka, and JPA in an Agile environment.

Agile Java JPA Spring

GFT TECHNOLOGIES SE

Open 24d HybridEuropeSenior

Senior Java Backend Engineer — Hybrid, WFA

Designs and builds high-performance Java backend services using Spring and REST APIs in a hybrid role.

Senior Java Backend Lead — SpringBoot, AWS & Kubernetes

Open 24d EuropeLead

Leads a Java backend team using Spring Boot, AWS, and Docker to build scalable solutions while coordinating with product and project teams.

AWS Docker Java Spring

Citi

Open 24d Europe H-1B sponsor history

Java Backend Engineer for Scalable Financial Apps

Designs and builds Java/Spring Boot services for Citi’s loan hedging systems, ensuring performance and stability in a financial environment.

Java Spring SQL

ING Hubs Poland

Senior Java Backend Engineer – Derivatives Trading Platform

CONFISA INTERNATIONAL GROUP

Build resilient Java/Spring Boot services for a derivatives trading platform, collaborating with traders and quants in Warsaw.

Java Spring

Senior Java Backend Engineer - Spring Boot & Microservices

AI Java Microservices Spring

Designs and builds backend services in Java/Spring Boot for AI-driven systems, focusing on microservices and clean, maintainable code.

Kramp

Open 24d HybridEuropeSenior

Senior Java Backend Engineer: End-to-End Platform Builder

Senior Java backend engineer building end-to-end APIs and services for an ag-tech platform that improves farm operations and sustainability.

API Cloud Java

Luxoft

Senior Java Backend Engineer | Cloud-Native Microservices on Azure

AKS API Azure Cloud Infrastructure as Code +5 skills

Designs, builds, and maintains Java-based microservices on Azure using Spring Boot, RESTful APIs, AKS, and Terraform.

Sii Poland

Senior Java Backend Engineer - Spring Boot & REST APIs

API Cloud GCP Java REST +2 skills

Designs and builds Java backend services for a business banking app using Spring Boot and REST APIs, with SQL and GCP exposure.

Autopay group

Java Backend Engineer – Fintech with Impact & Flex Time

Open 24d Europe

Builds and maintains Java 11 backend services for payment-processing systems using Spring/Spring Boot.

Java Spring

Sii Poland

Senior Java Backend Engineer – Spring Boot & API Expert