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Senior Backend Engineer (Java/Kotlin) on AWS — Remote
Owns JVM-based microservices on AWS for a container logistics intelligence platform, focusing on route optimization, data ingestion, and geo-routing.
IoT Backend Architect - Java 17/21, Kotlin, Cloud-Native
Designs and evolves backend architecture for distributed IoT-like systems using Java/Kotlin, Spring WebFlux, Docker, and Kubernetes in a cloud-native environment.
Backend Engineer (Java/Kotlin) for AI-Driven Microservices
Build backend microservices in Java/Kotlin for an AI-powered merchant assistant handling high-traffic, real-time support using Spring Boot, Kafka, and LLM techniques.
Senior Backend Engineer (Java, Microservices & AI Automation) @ j-labs software specialist
Build and extend a microservices-based talent-acquisition platform, integrating candidate data across systems and automating workflows with AI tools.
Senior Java IoT Backend Architect
Design and build backend services for an IoT eSIM platform using Java/Kotlin, Spring Boot, and Kubernetes, handling event-driven device-cloud communication and security in a cloud-native environment.
Senior Java Backend - Microservices, DDD & Event-Driven
Build and evolve a Java/Spring-based Talent Acquisition Suite using microservices, DDD, and event-driven patterns to manage candidate workflows and integrations.
Java Developer
Build and maintain Java-based backend services for a major Polish telecom client using Spring, Spring Boot, and relational databases.
Java Developer
Build and maintain Java/Kotlin microservices for an e-signature platform, using Spring Boot, PostgreSQL, MongoDB, and Kubernetes in Azure.
Senior Java Backend Engineer - MES & SAP Integrations
Senior Java developer builds backend services in Java 11+ and Java EE to integrate MES with SAP and plant controls across multiple sites.
Full Stack Developer, AI
Build full-stack HR tech systems (Java, Python, Angular, Spring Boot) and AI-powered pipelines (Snowflake, AWS, Airflow) while owning CI/CD, DevOps, and cloud deployments.
Java Developer
Builds and maintains a microservices-based e-commerce backend in Java/Kotlin with Spring, Oracle/PostgreSQL, AWS/GCP/Azure, CI/CD, Kubernetes, and automated testing.
Senior Backend Java/Kotlin Engineer — E-commerce, Remote
Builds backend services for fintech-powered e-commerce platforms using Java/Kotlin and Spring, focusing on scalable, user-centric solutions.
Senior Backend Java/Kotlin Engineer E-commerce (Poland / Remote)
Builds backend services for a global e-commerce platform using Java/Kotlin and Spring, integrating AI agents and modern data stores to streamline product search and pricing.
Senior Java & Kotlin Backend Engineer (AWS)
Builds and maintains Java/Kotlin microservices on AWS, writes Dockerized CI/CD pipelines, and enhances libraries for deployment automation.
Senior Java/Kotlin Backend Engineer - Microservices & REST
Designs and maintains scalable Java/Kotlin microservices and REST APIs using Spring Boot and SQL, ensuring performance and reliability in a product-focused team.
Lead Backend Engineer (Java/Kotlin) - AWS & Microservices
Lead backend engineer designing and delivering scalable Java/Kotlin microservices on AWS while mentoring engineers and upholding code quality.
Lead Backend Engineer (Java/Kotlin) – Hybrid Kraków
Lead backend development using Java/Kotlin and AWS, guiding a hybrid Kraków team to build scalable solutions and mentor engineers.
Backend/Full-Stack Developer
Build and maintain scalable, event-driven microservices in Kotlin/Spring Boot and React, deploying on AWS/Kubernetes for a large-scale internal system used across multiple markets.
Full Stack Developer, AI
Build and maintain full-stack HR tech systems using Java, Python, Angular, and cloud platforms, while integrating AI tools into the SDLC and data pipelines.
Senior Java Backend Lead | Hybrid Kraków
Leads backend development in Java/Kotlin, designing scalable microservices on AWS while collaborating with product teams to deliver business-aligned solutions.