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Senior Software Engineer (.NET / Java & AI Development)

New EuropeSenior

Senior Software Engineer in Warsaw building and maintaining enterprise applications with .NET/C# (preferred) or Java, working day to day with AI-assisted coding tools like Claude Code, GitHub Copilot and Cursor, applying Specification-Driven Development, and using Git, CI/CD and strong testing practices. Role is sourced via recruiter Antal.

AI AWS Azure CI/CD Claude Code +10 skills

Senior Java Developer (f/m/x)

New EuropeSenior

Senior full-stack engineer at Sii Poland (Warsaw, on-site) developing and maintaining a business-critical platform for a global energy/maritime client, including its move to the cloud. Day-to-day mixes Java full-stack work with Python, React.js, Node.js and Golang, plus GCP/AWS cloud setup, Terraform/Ansible IaC, and CI/CD via GitHub Actions and Jenkins.

Ansible Automation AWS CI/CD Cloud +14 skills

OPENCHIP & SOFTWARE TECHNOLOGIES

Senior DevOps Engineer

New EuropeSenior

Senior DevOps Engineer who defines and builds DevOps best practices, CI/CD pipelines, and infrastructure automation across hybrid on-premises/cloud environments at a European AI silicon company. Core stack: Linux, networking, Python, Go, Terraform/Ansible, Docker/Kubernetes.

AI Ansible Automation AWS Azure +24 skills

Senior Java Developer (Kafka)

New HybridEuropeContractSenior

Senior backend Java developer designing event-driven services and integrations for a large Big Data platform in the logistics industry, modernizing legacy apps across international markets. Core stack: Java 17+, Spring Boot, Kafka/Kafka Streams, Kubernetes, and relational DBs; hybrid Warsaw role (1 office day/week) at 150-200 PLN/h B2B.

API Cloud Cloud Native Event Driven Architecture Git +9 skills

150 – 200 PLN / hr

Societe Generale

Devops Engineer

New HybridEurope

DevOps Engineer on Société Générale CIB's Financing Services Interfaces team in Warsaw: builds and maintains CI/CD pipelines, automates deployments with Python, manages environments, and supports business-critical apps under a 'You Build It, You Run It' model. Stack: Java 17+, Python, Oracle/PostgreSQL, GitHub, Jenkins, Linux. Hybrid role, 3 office days per week.

Agile Automation Azure CI/CD Cloud +13 skills

Your ITeams Sp. z o.o.

Java Developer (hybrid from Wrocław)

New HybridEurope

Java Developer designing, building, and maintaining back-end services for a secure public-facing website on a microservices architecture — also shaping architecture, deployment pipelines, and engineering practices, and troubleshooting production issues. Hybrid role based in the Wrocław office 3 days per week, within a banking and finance environment.

Agile Java Microservices Python Unit Testing

Senior Java Developer

New EuropeInternshipSenior

Miratech Group is hiring a Senior Java Developer to build and maintain a tax administration system for a European public-sector client, covering the full lifecycle of tax declaration processing. Daily work centers on Java with Spring/Quarkus, microservices on Docker/Kubernetes, PostgreSQL, and Kafka/ActiveMQ integrations.

ActiveMQ Angular CI/CD Docker Java +9 skills

Fullstack Java Developer

Builds and maintains microservice-based business applications for a banking-industry client as a fullstack developer: advanced Angular 19+ frontends (TypeScript, RxJS, Signals, SCSS) plus Java 17+ / Spring Boot 3.3+ backend services with Apache Kafka. Mostly remote, with weekly on-site visits in Warsaw (Wola); long-term B2B contract.

Java Jest RxJS Scss Spring +1 skills

DevOps Engineer

Hands-on DevOps Engineer role in Kraków focused on stabilizing, optimizing, and upgrading an existing OpenSearch/Elasticsearch environment — preparing it for Kubernetes, automating deployments, and migrating OpenSearch to Azure Kubernetes Service (AKS), working independently on infrastructure and automation.

AKS Automation Azure DevOps Elasticsearch +2 skills

Solution&Fullstack Engineer (Python/Python&Java+ JS) - AI First

Fullstack engineer building a banking post-trade execution cross-asset platform for a leading Japanese financial group, using Python (optionally with Java) on the backend, JavaScript on the frontend, and PostgreSQL, with AI development tools like GitHub Copilot.

AI API AWS Docker Fintech +7 skills

Your ITeams Sp. z o.o.

Senior Java Backend Engineer - Hybrid (Wrocław, 3 days/wk)

New HybridEuropeSenior

Your ITeams is hiring a Senior Java Backend Engineer in Wrocław to design, build, and maintain a secure public-facing website on a microservices architecture — blending backend development with system design, improving deployment pipelines, and doing tests and code reviews. Hybrid: 3 days/week in the Wrocław office; the work sits in a banking context.

Java Microservices

Accenture Poland

Calypso Backend Engineer — Java 17, Spring, Kafka

Design, develop, and maintain Java 17 / Spring Boot backend services for international finance projects at Accenture Poland, working with Nasdaq Calypso and implementing messaging integrations (Kafka). The role follows a flexible remote/onsite mix across Accenture's Polish offices and client teams.

Raytheon Technologies

Software Engineer C++ / Python – Systemy Awioniczne (FMS)

Develops and maintains C++ avionics software for the Flight Management System (FMS) to MISRA standards, builds automated tests in Python, and supports DO-178C DAL B certification activities (code reviews, coverage analysis) at Collins Aerospace/RTX in Wrocław, in a hybrid work model.

Artifactory C++ Git Jest Jira +2 skills

10K – 21K PLN / mo

Accenture Poland

Java Developer

New EuropeContract

Java Developer at Accenture Poland building business-critical applications in an agile team using Java, Spring Boot, Spring Integration, Gradle, Kafka, and Oracle, plus CI/CD automation and Docker/Kubernetes. Hybrid role (3 days/week in office); preferred location Tricity, with Warsaw or Łódź also considered.

Agile API Automation Bash CI/CD +14 skills

Elasticsearch B.V.

Senior Full Stack Software Developer - Observability

New Europe, UKSenior

Senior full-stack engineer on Elastic's Streams UI team, building Fleet (management for Elastic Agent in Kibana) and Streams (log ingestion/organization tooling). Day to day: designing TypeScript/React UIs integrated with Node.js back ends, leading architecture and code reviews, and collaborating async in a fully distributed team.

Accessibility AI Cloud Cloud Native Data Ingestion +12 skills

308K – 487K PLN

Belvedere Recruitment

Technical Lead - Full Stack Platform Development

New EuropeContractLead

Six-month contract Technical Lead role in Kraków (hybrid) building platform features and integrations: writing full-stack front-end and back-end code with modern cloud technologies and APIs, and documenting key technical decisions within a collaborative team.

Lead .NET Developer (Full-Stack)

New RemoteEuropeLead

Lead .NET developer at CSHARK doing hands-on full-stack work on a lending platform for UK/European financial institutions, built on C#, .NET Framework 4.x, ASP.NET and SQL Server with legacy Delphi/COM components. The role evolves toward technical leadership, architecture and driving AI-assisted development.

AI Angular API Azure Azure DevOps +15 skills

Engineering Full Stack Developer Remote (EU) · Remote (PL) 6 000 – 25 000 PLN (B2B) / month, by band

New RemoteEurope

Full Stack Developer at WAYF, a content-platform engineering studio, building client projects end to end with TypeScript, React/Next.js, Node.js/NestJS and PostgreSQL. Fully remote within the EU, paid monthly via B2B salary bands by seniority.

AI API CSS JavaScript Linux +11 skills

6K – 25K PLN / mo

Societe Generale

Backend Java/Kotlin Developer for Fintech Platform

Backend developer at Société Générale in Warsaw building features for the bank's Origination Platform using Kotlin, Java, Spring Boot, and Angular. You work in client-centric teams following SCRUM and DevOps practices in a hybrid office setting, gaining analytics and banking domain expertise.

Analytics Angular DevOps Java Kotlin +2 skills

Senior PHP Developer (Symfony) - Remote Backend

New EuropeSenior

Remote (within Poland) senior backend developer role building and maintaining large, high-traffic e-commerce platforms. Day-to-day work focuses on PHP/Symfony backend development with an emphasis on performance, scalability and security, using ElasticSearch, Redis and RabbitMQ in a Scrum team.

E-commerce Elasticsearch Jest PHP RabbitMQ +2 skills