Python Engineer

🏢 Summary: Backend-focused contract role to develop and maintain high-performance, reliable systems with strong cloud and containerization practices. The position involves close collaboration with frontend teams to ensure seamless data integration and efficient deployment on AWS. Initial 6-month B2B contract with remote work and periodic travel. 🗂️ Requirements: Proficiency in Python, Experience with backend frameworks, Experience with Pandas, Knowledge of Docker, Knowledge of Kubernetes, Hands-on experience with AWS services (Lambda, EC2, ECS, EKS), Basic knowledge of Terraform, English level B2+ 📃 Skills: Python, Pandas, Docker, Kubernetes, AWS, Lambda, EC2, ECS, EKS, Terraform, Temporal, Camunda, StepFunctions, Pymocks 🏢 Description: Project Information: Start : ASAP Rate : up to 200 PLN/h Type of contract : B2B Length of the project : first contract for 6 months Location : remote Business travels : one trip to Frankfurt per 3 months Languages : English on minimum B2+ level; German - nice to have Summary: This role focuses on developing and maintaining robust backend systems to ensure high performance and reliability while collaborating closely with frontend teams for seamless data integration. Main Responsibilities: Develop and maintain backend systems with a focus on performance and reliability. Collaborate closely with frontend teams to ensure smooth data flow and integration. Build and manage containerized applications using tools like Docker and Kubernetes. Utilize cloud services, particularly AWS, to deploy and operate applications efficiently. Key Requirements: Proficiency in a general-purpose programming language, preferably Python. Experience with backend and data-science frameworks, specifically Pandas. Solid understanding of containerization technologies, including Docker and Kubernetes. Hands-on experience with AWS cloud services like Lambda, EC2, ECS, and EKS. Basic knowledge of Terraform. Nice to Have: Knowledge of business process modeling or workflow orchestration tools such as Temporal, Camunda, or AWS Step Functions. Experience working with mocking frameworks like pymocks.

🏢 Summary: Hybrid Backend Developer role focused on modernizing and optimizing backend services, upgrading core technologies, and improving authentication and data pipelines. The project involves Java/Scala development, Play Framework upgrades, Spark-based batch processing, and OAuth migration. B2B contract with fast recruitment process and onboarding in Sweden. 🗂️ Requirements: Hands-on experience with production Java services, Hands-on experience with production Scala services, Familiarity with Play Framework internals, Experience with Spark for pipeline-heavy work, Experience with OAuth-based authentication patterns, Fluent English for project communication 📃 Skills: Java, Scala, Play, Spark, OAuth, JDK, GenAI, Gradle, CI/CD, React, TypeScript 🏢 Description: 🌍 Work mode: hybrid –  3 days from the Warsaw office. 🔍 Onboarding : 2 weeks in Malmo, Sweden. ⏰ Start : 1 week notice period, August 3rd at the latest. 📝 Contract : B2B > up 195 zl/h. ⚙️ Recruitment process : 1 meeting with the client. ⏳ Duration : > 3 months contracts + extensions. 📕Project language : English. 💼 Industry : Technology. 💻 Workload : Full time (40 hours per week). Summary: The Backend Developer role is aimed at enhancing and modernizing backend services and pipelines within the organization. This position primarily focuses on improving system performance, ensuring robust authentication mechanisms, and implementing automation to streamline processes. Main Responsibilities: Modernise backend services and pipelines by upgrading to the latest JDK, Scala 3.x, and Play Framework 3.x. Apply GenAI tooling to automate code transformations, dependency resolution, and compatibility fixes, producing reusable tools and documentation. Migrate authentication frameworks from legacy APIs to OAuth-based solutions across various backend services. Replace multiple data stores with a single versioned table, creating Spark/Java batch pipelines for backfill/migration and extending Scala/Play backends. Key Requirements: Hands-on experience with production Java/Scala services . Familiarity with Play Framework internals. Experience with Spark for pipeline-heavy work. Comfortable with OAuth-based authentication patterns. Nice to Have: Familiarity with React/TypeScript. For DevOps-leaning candidates: experience with Gradle, scripting, and CI/CD pipelines. Other Details Tools/Methodologies: Java, Scala, Play Framework, Spark, OAuth.

🏢 Summary: Long-term remote B2B contract for a Backend Engineer responsible for building and maintaining high-performance backend systems in Java, deployed on Kubernetes within AWS. The role focuses on developing containerized applications and leveraging cloud services to ensure scalability and reliability. Work involves JVM-based technologies and cloud-native architecture. 🗂️ Requirements: Proficiency in Java, Experience with Spring Boot and JVM ecosystem, Hands-on experience with AWS services (Lambda, EC2, ECS, EKS), Minimum 1–2 years of experience with AWS or other cloud platforms, Strong knowledge of Docker and Kubernetes, Experience building and managing containerized applications, Basic knowledge of Terraform, Knowledge of Camunda or AWS Step Functions 📃 Skills: Java, Spring, JVM, AWS, Lambda, EC2, ECS, EKS, Kubernetes, Docker, Terraform, Camunda, StepFunctions, Angular, Python 🏢 Description: Backend Engineer (Java/Kubernetes/AWS): Introduction & Summary: This role requires a skilled Backend Engineer proficient in Java with experience in Kubernetes and AWS. The ideal candidate will be responsible for developing and maintaining efficient backend systems that prioritize performance and reliability while leveraging cloud technologies. What we offer: Full Remote Rate: 180-200 PLN/ H+ VAT Long Term B2B contract Main Responsibilities: Develop and maintain backend systems, running in Kubernetes in the AWS cloud, with a focus on performance and reliability. Build and manage containerized applications using tools like Docker and Kubernetes. Utilize cloud services, particularly AWS, to deploy and operate applications efficiently. Key Requirements: Proficiency in Java is required, with additional experience in Python as a plus. Experience with the JVM ecosystem, especially Spring Boot. Familiarity with frontend technologies, particularly Angular. Solid understanding of containerization technologies, including Docker and Kubernetes. Hands-on experience with AWS cloud services like Lambda, EC2, ECS, and EKS. Basic Terraform knowledge is essential. Minimum of 1-2 years working with AWS or equivalent experience with other cloud platforms. Knowledge of business process modeling or workflow orchestration tools such as Camunda or AWS Step Functions. Nice to Have: Experience with CI/CD pipelines. Familiarity with microservices architecture. Understanding of Agile methodologies. German languages Other Details: This position may offer remote work flexibility. The role is for a long-term assignment focusing on cloud-based technologies in a dynamic environment.

🏢 Summary: The offer is for a Backend Engineer responsible for building and maintaining high-performance backend systems in a cloud-based environment using Java, Kubernetes, and AWS. The role focuses on developing containerized applications and operating them reliably in the AWS cloud. It is a long-term remote B2B contract centered on scalable and cloud-native technologies. 🗂️ Requirements: Proficiency in Java, Experience with JVM ecosystem and Spring Boot, Experience with Kubernetes and Docker, Hands-on experience with AWS services (Lambda, EC2, ECS, EKS), Basic knowledge of Terraform, Minimum 1-2 years of AWS or other cloud platform experience, Understanding of containerization concepts, Knowledge of Camunda or AWS Step Functions 📃 Skills: Java, Python, Spring, SpringBoot, Kubernetes, Docker, AWS, Lambda, EC2, ECS, EKS, Terraform, Angular, Camunda, StepFunctions, JVM 🏢 Description: Backend Engineer (Java/Kubernetes/AWS): Introduction & Summary: This role requires a skilled Backend Engineer proficient in Java with experience in Kubernetes and AWS. The ideal candidate will be responsible for developing and maintaining efficient backend systems that prioritize performance and reliability while leveraging cloud technologies. What we offer: Full Remote Rate: 180-200 PLN/ H+ VAT Long Term B2B contract Main Responsibilities: Develop and maintain backend systems, running in Kubernetes in the AWS cloud, with a focus on performance and reliability. Build and manage containerized applications using tools like Docker and Kubernetes. Utilize cloud services, particularly AWS, to deploy and operate applications efficiently. Key Requirements: Proficiency in Java is required, with additional experience in Python as a plus. Experience with the JVM ecosystem, especially Spring Boot. Familiarity with frontend technologies, particularly Angular. Solid understanding of containerization technologies, including Docker and Kubernetes. Hands-on experience with AWS cloud services like Lambda, EC2, ECS, and EKS. Basic Terraform knowledge is essential. Minimum of 1-2 years working with AWS or equivalent experience with other cloud platforms. Knowledge of business process modeling or workflow orchestration tools such as Camunda or AWS Step Functions. Nice to Have: Experience with CI/CD pipelines. Familiarity with microservices architecture. Understanding of Agile methodologies. Other Details: This position may offer remote work flexibility. The role is for a long-term assignment focusing on cloud-based technologies in a dynamic environment.

🏢 Summary: Senior Backend Developer role focused on Risks & Inspections and Safety Intelligence projects using .NET/C# and event-driven architecture. The position involves API and service development, domain modeling, integrations, and comprehensive testing in a hybrid work model based in Warsaw. Full-time B2B contract with potential long-term extension and occasional international travel. 🗂️ Requirements: Strong proficiency in .NET, Strong proficiency in C#, Experience in API development, Experience in service implementation, Familiarity with event-driven architecture, Expertise in domain modeling, Knowledge of tenant-aware data management, Experience with unit testing, Experience with integration testing, Experience with service testing, Experience with contract testing, English proficiency, Availability for hybrid work in Warsaw 📃 Skills: .NET, C#, API, React, MDM, workflow, audit, testing, integration, queues, idempotency 🏢 Description: • Work model: hybrid - 2 days a week, Warsaw office. • Project language: English. • Start: ASAP or 30 days. • Remuneration: B2B > up to 48 USD/hour. • FTE: full-time (40 hours per week) • Business Travel: may travel once a year to France or the Netherlands. • Equipment: laptop provided by the client • Industry: Information Services. We are seeking a skilled Backend Developer to join our innovative team focusing on Risks & Inspections and Safety Intelligence projects. The ideal candidate will possess robust experience in .NET / C# development, API and service implementation, and event-driven design patterns. You will play a critical role in ensuring effective domain modeling, integration with various services, and thorough testing methodologies. Main Responsibilities: Implementing strong .NET / C# development practices. Executing API and service implementations. Utilizing event-driven patterns such as events, queues, and idempotency. Developing comprehensive domain models and state management. Managing tenant-aware data access and conducting authorization checks. Integrating with MDM, workflow, audit, and various data services. Conducting unit, integration, service, and contract testing. Collaborating on specifications from structured requirements. Key Requirements: Strong proficiency in .NET / C#. Experience in API and service development. Familiarity with event-driven software architecture. Expertise in domain modeling and traceability. Knowledge of tenant-aware data management. Experience in effective testing methodologies across multiple domains. Nice to Have: Experience with React or similar frameworks. Understanding of spec-driven development practices. Capability to work in a contract-first delivery environment. Experience with cross-capability collaboration. Other Details: The role is designed for a new initiative with a senior-level requirement. Two 5-person teams are being built with a target start date within 3-4 weeks. The initial contract duration is 12 months, with potential extensions subject to a one-month notice period. The work is primarily remote, requiring office attendance two days a week. Candidates may need to travel to the Netherlands or France once during the year. English language proficiency is necessary, and equipment will be provided by the organization.

🏢 Summary: Full Stack Developer role in the automotive industry focused on building and maintaining web applications using modern Java and JavaScript technologies. The project involves developing Angular-based frontends and Spring Boot backends deployed on AWS, with long-term remote collaboration. Full-time B2B engagement with English-speaking client and regular team interactions. 🗂️ Requirements: 5+ years of software development experience, Proficiency in Java, Proficiency in JavaScript, Proficiency in TypeScript, Experience with Spring Boot (Boot, Data, Security), Experience with Angular, Experience with HTML/CSS, Experience with SQL databases, Experience with NoSQL databases, Experience with Hibernate or JPA, Experience with AWS (ECS, EKS, Lambda, CloudWatch), Ability to write unit tests using JUnit 📃 Skills: Java, JavaScript, TypeScript, Angular, HTML, CSS, Spring, SpringBoot, Hibernate, JPA, SQL, NoSQL, AWS, ECS, EKS, Lambda, CloudWatch, JUnit 🏢 Description: 🌍 Remote work: remote (occasional meetings in the Warsaw office; may happen every 2 weeks, with client workshops every 3 months). 💰 Rate: B2B – up to 145 zl/h. 📕 Project language: English. ⏳ Project length: > 12 months + prolongations. ⏰ Start: ASAP / 2 weeks. 💻 Equipment : work on own equipment. 💬 Workload: full time, fixed-price contract : including 30 paid days off (approx. 18.5 working days/month). ⚙️ Recruitment process : 1 interview with the client. 💼 Industry : Automotive. Summary: This role focuses on developing and maintaining robust full stack applications for the PAAK team, primarily using a range of modern web technologies and frameworks . Main Responsibilities: Develop and maintain full stack applications using Java, JavaScript, and TypeScript . Implement web front-ends using Angular and HTML/CSS . Design and manage back-end services with Spring Boot , including integration with databases. Utilize AWS cloud services for deployment and monitoring. Write unit tests and maintain code quality using JUnit. Participate in regular team meetings and client interactions . Key Requirements: 5+ years of experience in software development. Proficiency in Java and JavaScript/TypeScript. Experience with Spring Boot and its ecosystem (Boot, Data, Security). Familiarity with both SQL and NoSQL databases using Hibernate or JPA . Experience using AWS services (ECS/EKS, Lambda, CloudWatch). Nice to Have: Knowledge of CI/CD practices, especially using GitHub Actions . Familiarity with design patterns such as Saga . Experience with container orchestration tools. Other Details: Location: Warsaw Work Schedule: Full time with a specification of 18.5 days work on service order requiring holidays during assignment. Team Interaction: Consultants’ teams meet every 2 weeks; client visits every 3 months. Remote Work: BYOD policy, no travel required.

🏢 Summary: Backend Developer role focused on modernizing and optimizing backend services and data pipelines, including technology upgrades, authentication migration, and automation initiatives. The position involves working with Java/Scala ecosystems, Spark pipelines, and OAuth-based security in a hybrid model with onboarding in Sweden. B2B contract with competitive hourly rate and English as the project language. 🗂️ Requirements: Hands-on experience with production Java services, Hands-on experience with production Scala services, Familiarity with Play Framework internals, Experience with Spark for data pipelines, Experience with OAuth-based authentication patterns, Availability for hybrid work (3 days/week in Warsaw or Cracow), Availability for 2-week onboarding in Malmo, Sweden, Fluent English 📃 Skills: Java, Scala, Play, Spark, OAuth, Gradle, CI/CD, React, TypeScript 🏢 Description: 🌍 Work mode: hybrid –  3 days from the Warsaw OR Cracow office. ⏳ Duration : > 3 months contracts . 🔍 Onboarding : 2 weeks in Malmo, Sweden. ⏰ Start : August 3rd at the latest. 📝 Contract : B2B > up 200 zl/h. ⚙️ Recruitment process : 2 meetings. 📕Project language : English. 💼 Industry : Technology. 💻 Workload : Full time (40 hours per week). Summary: The Backend Developer role is aimed at enhancing and modernizing backend services and pipelines within the organization. This position primarily focuses on improving system performance, ensuring robust authentication mechanisms, and implementing automation to streamline processes. Main Responsibilities: Modernise backend services and pipelines by upgrading to the latest JDK, Scala 3.x, and Play Framework 3.x. Apply GenAI tooling to automate code transformations, dependency resolution, and compatibility fixes, producing reusable tools and documentation. Migrate authentication frameworks from legacy APIs to OAuth-based solutions across various backend services. Replace multiple data stores with a single versioned table, creating Spark/Java batch pipelines for backfill/migration and extending Scala/Play backends. Key Requirements: Hands-on experience with production Java/Scala services . Familiarity with Play Framework internals. Experience with Spark for pipeline-heavy work. Comfortable with OAuth-based authentication patterns. Nice to Have: Familiarity with React/TypeScript. For DevOps-leaning candidates: experience with Gradle, scripting, and CI/CD pipelines. Other Details Tools/Methodologies: Java, Scala, Play Framework, Spark, OAuth.

🏢 Summary: Backend Developer role focused on modernizing and optimizing backend services and data pipelines, including migration to newer Java/Scala and Play Framework versions and implementation of OAuth-based authentication. The position involves automation with GenAI tools and Spark-based data migrations in a hybrid work model. B2B contract with onboarding in Sweden and full-time engagement in English. 🗂️ Requirements: Hands-on experience with production Java services, Hands-on experience with production Scala services, Experience with Play Framework internals, Experience with Spark for pipeline-heavy work, Experience with OAuth-based authentication patterns, Availability to work hybrid from Warsaw or Cracow office, Availability for 2-week onboarding in Malmo, Sweden, Fluency in English 📃 Skills: Java, Scala, Play, Spark, OAuth, JDK, GenAI, Gradle, CI/CD, React, TypeScript 🏢 Description: 🌍 Work mode: hybrid –  3 days from the Warsaw OR Cracow office. ⏳ Duration : > 3 months contracts . 🔍 Onboarding : 2 weeks in Malmo, Sweden. ⏰ Start : August 3rd at the latest. 📝 Contract : B2B > up 195 zl/h. ⚙️ Recruitment process : 2 meetings. 📕Project language : English. 💼 Industry : Technology. 💻 Workload : Full time (40 hours per week). Summary: The Backend Developer role is aimed at enhancing and modernizing backend services and pipelines within the organization. This position primarily focuses on improving system performance, ensuring robust authentication mechanisms, and implementing automation to streamline processes. Main Responsibilities: Modernise backend services and pipelines by upgrading to the latest JDK, Scala 3.x, and Play Framework 3.x. Apply GenAI tooling to automate code transformations, dependency resolution, and compatibility fixes, producing reusable tools and documentation. Migrate authentication frameworks from legacy APIs to OAuth-based solutions across various backend services. Replace multiple data stores with a single versioned table, creating Spark/Java batch pipelines for backfill/migration and extending Scala/Play backends. Key Requirements: Hands-on experience with production Java/Scala services . Familiarity with Play Framework internals. Experience with Spark for pipeline-heavy work. Comfortable with OAuth-based authentication patterns. Nice to Have: Familiarity with React/TypeScript. For DevOps-leaning candidates: experience with Gradle, scripting, and CI/CD pipelines. Other Details: Tools/Methodologies: Java, Scala, Play Framework, Spark, OAuth.

🏢 Summary: B2B role for a Senior Fullstack Developer to design and build enterprise fintech applications using Angular 17+ and Node.js, with strong .NET and Azure integration. The position involves developing scalable front-end and back-end solutions, ensuring security, performance, and high code quality across cloud-based environments. Work is hybrid with occasional business travel. 🗂️ Requirements: Minimum 7 years of software development experience, Strong experience with Angular 17+ and TypeScript, Hands-on experience with Node.js, Proficiency in C# and .NET 8+, Experience with ASP.NET Core and Entity Framework Core, Experience with SQL Server and relational databases, Experience with Azure services including Azure AD, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Experience with unit and integration testing using Vitest, xUnit, Moq, Experience integrating RESTful APIs and external systems 📃 Skills: Angular, TypeScript, SCSS, HTML, Node.js, C#, .NET, ASP.NET, EntityFramework, SQL, SQLServer, Azure, AzureAD, Databricks, Docker, Kubernetes, CI/CD, Git, npm, REST, Vitest, xUnit, Moq, JSON, YAML 🏢 Description: Industry: Fintech Location: Hybrid Warsaw lor Gdańsk - 1-2 x month + twice a year, a one-week business trip to Munich. Assignment type: B2B Rates: 4-7 years exp: 138 PLN/h, 7-10 years exp.: 154 PLN/h, 10+ years exp: 167 PLN/h Summary: This role focuses on designing and developing enterprise applications, ensuring high-quality user interfaces and robust back-end systems, primarily using Angular and Node.js with experience in .Net and various cloud services. Main Responsibilities: Design and develop enterprise applications with Angular 17+ on the front end and Node.js on the back end. Experience with ASP.NET Core (.NET 8+) Implement standalone components and signals-based architecture for responsive, maintainable UIs. Integrate Azure MSAL authentication, RESTful APIs, and external system integrations. Build and optimize data access layers using Entity Framework Core and manage relational data in SQL Server. Ensure application security through authentication, authorization, and data protection using Azure AD. Deploy and manage environments using Docker, Kubernetes, and CI/CD pipelines. Write comprehensive unit and integration tests for both front-end (Vitest) and back-end (xUnit, Moq). Collaborate with cross-functional teams to maintain shared libraries and iterate on user feedback. Troubleshoot, debug, and optimize for scalability and performance across the stack. Key Requirements: Experience: minimum of 7 years as a developer. Front-End: Angular 17+, TypeScript, SCSS, HTML. Back-End: Node.JS, C#, .NET 8+, ASP.NET Core, Entity Framework Core, SQL Server. Languages & Formats: C#, SQL, JSON, YAML. Testing: Vitest, xUnit, Moq. Tools & Frameworks: Git, npm, RESTful APIs, Docker, Kubernetes, CI/CD pipelines. Cloud: Experience with Azure services (AD, SQL, Databricks). Nice to Have: Soft Skills such as Attention to Detail, Collaboration, Problem-Solving, and Learning Agility.

🏢 Summary: Senior Frontend Developer role for a greenfield international project focused on enterprise-grade frontend applications using React and TypeScript. The position involves building advanced UI solutions, integrating APIs, and supporting explainable, auditable workflows in a hybrid B2B setup. Teams work cross-functionally following API-first and event-driven development principles. 🗂️ Requirements: Senior-level frontend development experience, Strong knowledge of React, Strong knowledge of TypeScript, Experience building complex enterprise-grade applications, Hands-on API integration experience, Familiarity with contract-first or API-first development, Experience creating reusable components, Experience working with design systems, Understanding of accessibility standards, Knowledge of responsive design, Knowledge of performance optimisation, Knowledge of usability principles, Experience with frontend testing, Ability to work in cross-functional teams, Strong quality and validation mindset, Fluent Polish, Fluent English 📃 Skills: React, TypeScript, API, HTML, CSS, JavaScript, Testing, Accessibility, Responsive, Performance, DesignSystems 🏢 Description: Cooperation Details Start date: As soon as possible, within 3–4 weeks Contract duration: 12 months initially, with possible extensions Contract type: B2B Working model: Hybrid, with 2 days per week from the Warsaw office and the remaining days remotely Equipment: Laptop provided by the client Travel: Up to one possible business trip per year to the Netherlands or France (paid by the Client) Languages: fluent Polish and English are a must We are looking for a Senior Frontend Developer to join a new initiative delivered for an international client operating in the information services sector. Both projects are greenfield initiatives developed from scratch. Each team will consist of approximately five people, including a Tech Lead, Backend Developer, Frontend Developer, and QA Engineer. Responsibilities Developing frontend applications using React and TypeScript. Building advanced enterprise-grade user interfaces, including dashboards, forms, filters, cards, and drill-down views. Integrating frontend applications with APIs using a contract-first approach. Designing and developing reusable components and solutions based on a design system. Ensuring accessibility, responsiveness, performance, usability, and overall application quality. Implementing explainability-focused UI patterns, including evidence, rationale, confidence levels, and source traceability. Building human review workflows that support approval, rejection, and manual override of system recommendations. Collaborating closely with the Tech Lead, Backend Developers, QA Engineers, and other team members. Contributing to component, UI integration, and regression testing. Working according to spec-driven development, API-first, and event-driven delivery principles. Ensuring auditability, traceability, and explainability by design. Supporting thin vertical slice and steel-thread delivery to validate end-to-end functionality early in the development process. Requirements Senior-level experience in frontend software development. Strong practical knowledge of React and TypeScript. Experience in building complex enterprise-grade applications and user interfaces. Hands-on experience with API integration. Familiarity with contract-first or API-first development. Experience in creating reusable components and working with design systems. Good understanding of accessibility, responsive design, performance optimisation, and usability. Experience with frontend components, integration, and regression testing. Ability to work effectively in a cross-functional product team. Strong quality and validation mindset from the beginning of the development lifecycle. Fluency in Polish and English. Experience in projects involving AI, agentic workflows, human-in-the-loop governance, explainability, or decision-support systems will be considered an advantage.