Backend Developer (PySpark + Python, Java, Azure)(1-day weekly Gdynia

🏢 Summary: Contract role for a Senior Java Backend Developer to design and build scalable backend systems and microservices for a large enterprise digital platform in a hybrid model in Poland. The position focuses on developing RESTful services, integrating external systems, and optimizing distributed applications. Requires strong experience in Java-based microservices architecture and modern DevOps tools. 🗂️ Requirements: 7+ years of Java development experience, Strong expertise in Java 8+, Experience with Spring and related frameworks, Hands-on microservices development, Experience with RESTful APIs and web services, Experience with Kafka or distributed messaging systems, Understanding of SOA principles, Experience with relational or NoSQL databases, Experience with containerization and orchestration, Knowledge of React or advanced JavaScript, Proficiency with Git, Maven, Jenkins, Registration in Poland as self-employed consultant 📃 Skills: Java, Spring, SpringBoot, SpringMVC, JPA, Hibernate, REST, SOAP, HTTP, JSON, XML, Kafka, SQL, NoSQL, Docker, Git, Maven, Jenkins, React, JavaScript 🏢 Description: Dear Consultant, We are seeking an experienced Senior Java Backend Developer to design and build scalable backend systems and microservices for a large enterprise digital platform. Send CV if you are interested and registered in Poland as a self-employed Consultant. (marcillina.tietjen@dcvtechnologies.co.uk) Senior Java Backend Developer – Microservices (Contract) Location: Gdansk or Warsaw, Poland Work Mode: Hybrid – 1 day onsite per week Seniority: 7+ years experience Key Responsibilities • Design and implement backend systems and microservices• Develop RESTful APIs and web services• Participate in architecture reviews and optimisation initiatives• Debug, profile, and optimise applications• Integrate external APIs and services• Write and maintain technical documentation Required Skills & Experience • Strong expertise in Java 8+ • Frameworks: Spring, Spring Boot, Spring MVC, JPA, Hibernate • Microservices development using HTTP, REST, JSON, XML • Messaging and distributed systems experience ( Kafka ) • Strong understanding of SOA principles and web services (REST & SOAP) • Experience with Relational or NoSQL databases • Exposure to containerisation & orchestration technologies • Experience with React or advanced JavaScript • Tools: Docker, Git, Maven, Jenkins

🏢 Summary: Mid–Senior Python Backend Developer role focused on building and maintaining scalable backend services and microservices in Microsoft Azure cloud environments. The position involves designing RESTful APIs, implementing CI/CD pipelines, and working with containerized applications in production. The role requires close collaboration within Agile teams and active participation in architectural decisions. 🗂️ Requirements: Strong commercial experience as Python Backend Developer (mid–senior level), Hands-on experience with Microsoft Azure (App Services, Functions, AKS, Storage), Experience with FastAPI and/or Django, Experience designing RESTful APIs and microservice architectures, Knowledge of CI/CD pipelines and automated testing, Production experience with Docker and Kubernetes, Ability to work in English in cross-functional teams 📃 Skills: Python, Azure, FastAPI, Django, REST, Microservices, CI/CD, Docker, Kubernetes, Git 🏢 Description: As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Python Developer with Azure Responsibilities: Design, develop, and maintain backend services using Python Build and optimize RESTful APIs and microservices Work with Microsoft Azure (priority) to design, deploy, and manage cloud solutions (experience with GCP is acceptable as an alternative) Implement CI/CD pipelines and automated testing workflows Work with Docker and Kubernetes in production environments Collaborate in an Agile/Scrum team and participate in code reviews, planning, and architecture discussions Requirements: Strong commercial experience as a Python Backend Developer (mid–senior level) Hands-on experience with Azure (App Services, Functions, AKS, Storage, etc) Experience with FastAPI and/or Django Proven experience designing RESTful APIs and scalable microservice architectures Solid understanding of CI/CD, automated testing, and deployment pipelines Proficiency with Docker and Kubernetes in production Comfortable working in English and collaborating in cross-functional teams Nice to have: Strong knowledge of SQL/NoSQL databases and data modeling Understanding of cloud architecture patterns, scalability, and performance optimization Familiarity with unit, integration, and end-to-end testing practices Proficiency with Git and collaborative development workflows Awareness of security best practices in cloud and backend environments Experience with Databricks or other big‑data/data engineering platforms Commercial experience with Golang Full‑stack skills, especially with React Experience with Infrastructure as Code tools (Terraform, Bicep, ARM templates) Knowledge of event‑driven architectures and messaging systems (Kafka, Azure Service Bus, etc.) Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Frontend/Full-stack Software Developer role focused on building and deploying Angular-based UIs and Python (Flask) backend solutions on Microsoft Azure. The position involves end-to-end development, including ETL/data pipeline design, integration, testing, and architecture improvements. The role also covers performance, security, and compliance-driven enhancements within a scalable cloud environment. 🗂️ Requirements: Strong experience with Angular, Solid knowledge of Python, Solid knowledge of Flask, Hands-on experience with Microsoft Azure, Experience with Azure Data Factory, Experience with Azure Databricks, Experience building and deploying data pipelines, Knowledge of ETL processes, Experience with data integration, Experience with unit testing, Experience with integration testing, Familiarity with configuration management, Understanding of IFRS17 or IFRS9, Ability to design scalable architectures, Ability to design secure architectures 📃 Skills: Angular, Python, Flask, Azure, DataFactory, Databricks, ETL, DataIntegration, UnitTesting, IntegrationTesting, ConfigurationManagement, IFRS17, IFRS9 🏢 Description: Software Developer (Frontend / Full-stack) Requirements: Strong experience with Angular (frontend development) Solid knowledge of Python and Flask (backend development) Hands-on experience with Microsoft Azure (especially Data Factory, Databricks) Experience in building and deploying data pipelines Knowledge of ETL processes and data integration Experience with unit testing and integration testing Familiarity with configuration management Understanding of regulatory compliance (preferably IFRS17 / IFRS9) Ability to design scalable and secure architectures Strong problem-solving and troubleshooting skills Experience working with business stakeholders and translating requirements into technical solutions Good documentation and communication skills Angular, Python, Flask, Microsoft Azure, Unit Testing Main Responsibilities Develop front-end and back-end solutions using Angular, Python (Flask), and Microsoft Azure Implement and deploy UI components and ensure seamless integration Perform end-to-end development (not limited to maintenance), including pipeline build and deployment Develop and maintain application code and data mappings in Angular and Python Flask Design and build ETL / data integration solutions using tools such as Azure Data Factory and Azure Databricks Collaborate with business users on wireframe design and UI concepts Design, document, and maintain UI requirements Troubleshoot and resolve technical issues Maintain and enhance the existing VITA architecture Improve system performance and security Deliver product releases according to specifications, including unit testing Implement new features and change requests, including analysis, design, and documentation Develop integration tests to ensure compliance with requirements Update build procedures and manage configuration documentation

🏢 Summary: Contract Senior Full Stack Engineer role focused on designing and developing scalable Java and Python backend services within a microservices architecture. The position involves building REST APIs, integrations, and automation solutions while contributing to data processing and cloud-based platforms. The role also includes technical leadership and ensuring high-quality architecture and coding standards. 🗂️ Requirements: 6+ years software engineering experience, Strong Java backend development experience, Strong Python backend development experience, Hands-on microservices development, Experience building REST APIs, Experience with Spring Boot, Experience with cloud-based services, Experience designing scalable application architectures, Experience with system integrations and automation, Ability to conduct code reviews and ensure code quality standards 📃 Skills: Java, Python, SpringBoot, Microservices, REST, APIs, Cloud, Automation, Architecture, Integration 🏢 Description: We are looking for an experienced Senior Full Stack Engineer to design and develop scalable backend services and APIs while contributing to modern microservices-based architectures. The role involves building Java and Python-based services , supporting data processing capabilities, and ensuring high-quality application development aligned with architectural standards. The candidate will also provide technical leadership , guide development teams, and ensure adherence to coding and integration standards. Send CV to (marcillina.tietjen@dcvtechnologies.co.uk) 📍 Location: Poland 💼 Experience: Senior Level (6+ years) 📄 Position Type: Contract / B2B Key Responsibilities Design and develop scalable backend services and APIs Build Java and Python-based microservices Develop integrations and automation solutions Contribute to data processing and backend platform capabilities Ensure solutions align with application architecture and platform standards Participate in system design, code reviews, and quality assurance Provide technical leadership and mentorship to developers Collaborate with cross-functional teams to deliver reliable backend systems Ensure adherence to coding standards and best practices Required Skills Backend Development Java Spring Boot Microservices architecture REST API development Full Stack / Integration Python development API development and integrations Automation scripting Cloud services Architecture & Engineering Application architecture Integration patterns Microservices design Code quality and peer reviews Experience Required 6+ years of software engineering experience Strong experience developing Java and Python backend services Hands-on experience building microservices and REST APIs Experience designing scalable application architectures Experience working with cloud-based services and integrations Experience mentoring developers and contributing to technical leadership Ideal Candidate Strong backend engineering background Experience building scalable microservices systems Ability to lead development standards and architecture decisions Comfortable working in **collaborative

🏢 Summary: Remote Full-stack Data Engineer role focused on building and enhancing a modern Azure-based data architecture and reporting framework supporting IFRS17 and IFRS9 processes, using Angular and Python. The position involves end-to-end development of data pipelines, ETL solutions, and full-stack applications within a scalable cloud environment. 🗂️ Requirements: Proven experience as Full-stack Developer or Data Engineer, Strong hands-on experience with Angular, Strong hands-on experience with Python and Flask, Experience with Microsoft Azure services, Experience building ETL or data integration pipelines, Knowledge of unit testing and integration testing, Experience with data architectures and reporting frameworks, Understanding of configuration management and deployment processes, European Union citizenship, Residence in Poland 📃 Skills: Angular, Python, Flask, Azure, DataFactory, Databricks, ETL, SQL, IFRS17, IFRS9 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are currently looking for an experienced Full-stack Data Engineer (Azure + Python + Angular) to join a remote development team working on building a modern data architecture and reporting framework supporting IFRS17 and IFRS9 Quality Assurance and reporting processes. Project information: Type of project: IT services Office location: Poland Work mode: Remote Budget: 100–130 PLN net/h – b2b Project length: Long-term Only candidates with citizenship in the European Union and residence in Poland Start date: ASAP (depending on candidate’s availability) Project scope: Design, develop, and maintain full-stack solutions using Angular (frontend) and Python (Flask backend) Build and deploy end-to-end data pipelines and applications (development-focused, not only maintenance) Develop and maintain application code, mappings, and integrations across systems Design and implement ETL / Data Integration solutions using Azure Data Factory and Azure Databricks Participate in architecture design and contribute to building a scalable data and reporting framework Collaborate with business stakeholders to design wireframes and define UI requirements Ensure proper documentation of UI and system requirements Troubleshoot and resolve technical issues across the application stack Maintain and enhance the current VITA architecture Improve system performance, scalability, and security Deliver product releases in line with specifications, including unit testing Implement new features, change requests, and required design/documentation activities Develop and execute integration tests to ensure compliance with requirements Maintain and update build procedures and configuration management processes Competence demands: Proven experience as a Full-stack Developer / Data Engineer or similar role Strong hands-on experience with Angular and Python (Flask) Solid experience with Microsoft Azure ecosystem (Data Factory, Databricks, cloud services) Experience in building ETL / data integration pipelines Knowledge of unit testing and integration testing practices Understanding of configuration management and deployment processes Experience working with data architectures and reporting frameworks Familiarity with regulatory environments (IFRS17 / IFRS9 is a strong plus) Strong problem-solving and troubleshooting skills Ability to work independently in a remote environment Good communication skills and ability to collaborate with business stakeholders We offer: Remote working model Full-time job agreement based on b2b Private medical care with dental care (covering 70% of costs) Multisport card (also for an accompanying person) Life insurance

🏢 Summary: B2B contract for an experienced Backend Software Engineer to design, build, and operate cloud-native backend services on Microsoft Azure in a 100% remote model. The role focuses on end-to-end ownership of scalable, event-driven services, including development, deployment, and DevOps activities using modern Azure and container technologies. 🗂️ Requirements: Strong experience with C# and .NET in backend development, Practical experience with Microsoft Azure services, Experience with AKS and containerized workloads, Experience with messaging systems such as Service Bus or Kafka, Knowledge of SQL databases and data modeling, Experience with CI/CD pipelines, Experience with Infrastructure as Code using Terraform, Understanding of event-driven architecture 📃 Skills: C#, .NET, Azure, AKS, ServiceBus, Kafka, APIManager, SQL, Terraform, CI/CD, Kubernetes, DevOps 🏢 Description: Start Date: ASAP / Within 1 Month / Flexible Work Model: 100% remote Contract Type: B2B (140-150 PLN/h + VAT) We are looking for an experienced Backend Software Engineer to join a cloud‑native development team delivering scalable services on Microsoft Azure. The role focuses on designing, building, and operating backend services end‑to‑end in a modern, event‑driven architecture. You will take full ownership of your services, from development through deployment and ongoing support, working closely with architects and platform stakeholders. Responsibilities: Design, build, test, and deploy backend services and APIs using C# and .NET. Take ownership of build, release, and DevOps activities for assigned services. Develop and support event‑driven and messaging‑based architectures on Microsoft Azure. Deploy and manage containerised workloads using Azure Kubernetes Service (AKS). Provision and maintain infrastructure using Terraform in line with platform and client standards. Expectations: Strong hands‑on experience with C# / .NET i n backend service development. Practical experience with Microsoft Azure, including AKS, Service Bus or Kafka, and API Manager. Solid knowledge of SQL databases and data modelling concepts. Familiarity with CI/CD pipelines, DevOps best practices, and infrastructure as code. Ability to work effectively in agile teams, with strong problem‑solving and communication skills. What We Offer: Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance

🏢 Summary: Backend Developer role focused on designing and building scalable, cloud-based applications using Java and Spring Boot in a microservices architecture. The position involves developing and deploying distributed, event-driven services on Azure using modern containerization and API technologies. The offer emphasizes building reliable, high-quality backend systems with up-to-date cloud-native practices. 🗂️ Requirements: Strong Java development experience, Experience with Spring Boot, Experience with microservices architecture, Experience with cloud-native applications, Familiarity with Azure, Knowledge of Kafka or similar messaging systems, Understanding of GraphQL or REST APIs, Experience with Docker, Experience with Kubernetes 📃 Skills: Java, Spring, SpringBoot, Microservices, Azure, Kafka, GraphQL, REST, Docker, Kubernetes 🏢 Description: We are seeking a talented Backend Developer to join our team, contributing to the design and development of modern, cloud-based applications. The role focuses on building scalable and maintainable services using up-to-date technologies and best practices. Key Responsibilities: Develop and maintain backend services using Java and Spring Boot . Build and support microservices solutions for distributed systems. Work with cloud platforms such as Azure , including event-driven architectures. Implement and consume APIs using GraphQL or REST. Package and deploy applications using Docker and Kubernetes . Collaborate with team members to deliver reliable, high-quality software. Required Skills & Experience: Strong background in Java development with Spring Boot . Experience with microservices and cloud-native applications. Familiarity with Azure , Kafka , or similar messaging/event systems. Understanding of API design ( GraphQL /REST). Practical experience with containerization ( Docker , Kubernetes ). Nice to Have: Knowledge of CI/CD practices and automated deployments. Experience with monitoring, logging, or observability in distributed systems.

🏢 Summary: Remote role focused on building scalable backend systems and AI-oriented architecture within a modern cloud-native environment, with a strong emphasis on backend engineering and distributed systems. The position involves 70% backend and AI architecture work and 30% frontend development using Angular. The project follows a two-stage interview process with the client and partner organization. 🗂️ Requirements: Strong experience in Python development, Experience with FastAPI framework, Proficiency in system design, Experience in backend engineering, Knowledge of distributed systems, Experience with microservices architecture, Ability to develop frontend applications using Angular, Experience with cloud-native development environments 📃 Skills: Python, FastAPI, Angular, Microservices, DistributedSystems, SystemDesign, Backend, Cloud, AI 🏢 Description: Dear Consultant, Join a global technology engineering project focused on scalable backend systems, AI-oriented architecture, and modern cloud-native development environments. Please share CV marcillina.tietjen@dcvtechnologies.co.uk if interested. 📍 Fully Remote Tech Stack • Python • FastAPI • System Design • Angular • Backend Engineering • Distributed Systems • Microservices ⚙️ Role Split: 70% Backend & AI Architecture 30% Frontend (Angular) 2-stage interview process with Virtusa and the end client. DM if interested.

🏢 Summary: Senior Data Engineer role focused on large-scale migration from SQL Server to Databricks/Delta Lake, transforming complex SQL logic into production-grade Python/PySpark solutions. The position centers on enterprise-level data engineering, data modeling, and software development within a Medallion Architecture. The project involves redesigning and implementing scalable data solutions for thousands of databases in a long-term transformation initiative. 🗂️ Requirements: Very strong Python skills, Very strong PySpark skills, Proven experience with Databricks, Proven experience with Delta Lake, Strong SQL skills and ability to understand complex stored procedures, Experience working with large, shared codebases, Solid object-oriented programming knowledge, Strong data modeling experience (transactional and analytical), Experience in platform/data migration projects, Knowledge of Medallion Architecture (Bronze/Silver/Gold), Experience with large-scale data processing, Very good English skills, EU citizenship, Residence in Poland 📃 Skills: Python, PySpark, Databricks, DeltaLake, SQL, OOP, DataModeling, MedallionArchitecture, AzureDataFactory, AzureDevOps, Git, CI/CD, PowerBI 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are seeking an experienced Senior Data Engineer with Python and Databricks. This role supports a large-scale transformation from SQL Server–based systems to a Databricks / Delta Lake platform. The focus is on enterprise-grade data engineering and software development , not analytics or reporting. The project is SQL2Databricks migration, it involves 3500-4000 SQL DBs (2TB), replicating data in different shapes/ schemas to Databricks. Project information: Type of project: IT Services Office location: Poland Work model: Remote from Poland Budget: 140 - 160 PLN net/ h - b2b Project length: till the end of 2026, possible to extend it Only candidates with citizenship in the European Union and residence in Poland Start date: ASAP Project scope: Support a large-scale transformation from SQL Server–based systems to a Databricks / Delta Lake platform Transform complex, business-critical SQL logic (stored procedures) into clean, maintainable, and scalable Python / PySpark code Redesign and implement this logic in Python / PySpark within Databricks Contribute to a large, long-running data engineering codebase used by multiple teams Develop production-grade transformation code (packages, modules, reusable components) Design and evolve data models within a Medallion Architecture (Bronze / Silver / Gold) across multiple data layers Ensure software engineering quality, reusability, and long-term maintainability Apply software engineering best practices (clean code, OOP, modularization, refactoring) Work with very large data volumes and highly parallel, event-driven transformations Actively participate in code reviews and technical design discussions Support orchestration workflows (e.g., Azure Data Factory) Competence demands: Very strong Python and PySpark skills; proven experience with Databricks and Delta Lake Experience working in large, shared codebases (beyond notebooks) Strong SQL skills, especially reading and understanding complex logic Solid object-oriented programming experience, clean code principles Strong data modelling background (transactional and analytical) Experience in redesigning models during platform migrations Familiarity with layered data architectures (Bronze / Silver / Gold) Very good English skills Nice to have: Azure Data Factory (orchestration) Azure DevOps, Git, CI/CD pipelines Power BI or analytics tooling Infrastructure / DevOps knowledge (not mandatory) We offer: Remote working model Dynamic and innovation-driven engineering environment Full-time job agreement based on b2b Private medical care with dental care (covering 70% of costs) Multisport card (also for an accompanying person) Life insurance

🏢 Summary: Full Stack Developer role focused on building scalable, cloud-native applications using React and C# .NET Core in a capital markets environment. The position involves developing microservices, REST APIs, data pipelines, and analytical solutions supporting credit and market risk domains. 100% remote B2B contract with flexible start date. 🗂️ Requirements: 4-5+ years of full stack development experience, Strong expertise in React, Strong expertise in C#, Experience with .NET Core, Experience with microservices architecture, Experience with event-driven architecture, Experience with distributed systems, Experience building REST APIs, Hands-on experience with Python, Experience with PySpark, Experience with Power BI, Experience with data modeling, Experience in credit risk and market risk domains 📃 Skills: React, C#, .NETCore, Microservices, REST, TypeScript, Python, PySpark, PowerBI, DataModeling, DistributedSystems, EventDriven, Cloud 🏢 Description: Start Date: ASAP / Within 1 Month / Flexible Work Model: 100% remote Contract Type: B2B (140-160 PLN/h + VAT) We are looking for a highly skilled Full Stack Developer with deep expertise in React for frontend development and C# .NET Core for backend services. This role requires hands‑on experience building scalable, cloud‑native systems, along with strong exposure to capital markets, especially within credit risk and market risk domains. Expectations Minimum 4-5 years of professional software development experience across frontend and backend technologies. Strong expertise in React, C# .NET Core , microservices, event‑driven architecture, and distributed systems. Hands‑on experience with Python (pyspark), Power BI dashboards, data modeling, and analytical reporting. Responsibilities Develop and maintain full stack applications using React, C# .NET Core, and modern cloud‑native technologies. Build scalable backend services, REST APIs, and microservices with a focus on performance and resilience. Implement modular, accessible, and high‑quality frontend components using React and TypeScript. Collaborate with business and risk experts to deliver solutions in credit risk, market risk, and capital markets workflows. Work with Python (pyspark) to build data pipelines, transformations, and analytics processes. What We Offer Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance