Senior Python/Django Developer

🏢 Summary: Senior Full Stack Developer role focused primarily on backend development with Python and FAST API, combined with React-based frontend work in a hybrid B2B model. The position involves designing scalable web applications, building high-performance APIs, and working with relational and NoSQL databases. Strong backend expertise is essential, with intermediate frontend skills and experience in modern DevOps practices. 🗂️ Requirements: 8+ years of professional software development experience, Expert proficiency in Python, Strong experience with FAST API, Strong knowledge of relational and NoSQL databases, Experience with SQLAlchemy ORM, Deep understanding of data structures and algorithms, Experience building RESTful APIs and microservices, Proficiency in writing unit and integration tests in Python, Strong knowledge of ReactJS and NodeJS, Experience with Redux or MobX, Familiarity with React Query, Experience with Material UI, CSS, and HTML, Experience with Jest and Cypress, Solid understanding of JavaScript and TypeScript 📃 Skills: Python, FASTAPI, SQLAlchemy, PostgreSQL, MySQL, MongoDB, DynamoDB, ReactJS, NodeJS, Redux, MobX, ReactQuery, MaterialUI, CSS, HTML, Jest, Cypress, JavaScript, TypeScript, Docker, Kubernetes, AWS, Azure, GCP, RabbitMQ, Kafka 🏢 Description: Working mode: Hybrid mode ( 2-3 days in a week from the office in Wroclaw or Warsaw) Experience Level: 8+ Years Contract Type: B2B About the Role We are looking for a highly skilled Senior Full Stack Developer with a primary focus on Python and FAST API to join the development team. The ideal candidate is a Python expert capable of architecting robust backend services. While React skills are required, we are flexible regarding the depth of frontend expertise (Intermediate level is acceptable), provided the backend strength is exceptional. Key Responsibilities Backend Architecture: Design, develop, and maintain scalable web applications using Python and FAST API . API Development: Build high-performance RESTful APIs and microservices, ensuring low latency and high availability. Database Management: Work with relational and NoSQL databases, utilizing ORMs like SQLAlchemy to design efficient database schemas and queries. Frontend Development: Develop and maintain user-facing features using ReactJS , ensuring the technical feasibility of UI/UX designs. Code Quality: Write clean, maintainable, and testable code; perform unit testing to ensure robustness. DevOps: Implement and manage CI/CD pipelines to streamline deployment processes. Collaboration: Work closely with cross-functional teams (Product, QA, and Design) in a hybrid working environment. Mandatory Technical Skills 1. Backend (Core Strength): Languages: Expert proficiency in Python . Frameworks: Strong experience with FAST API (Must-have). Experience with SQLAlchemy is highly preferred. Fundamentals: Deep understanding of data structures, algorithms, and space-time complexity. Database: Strong understanding of Relational (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, DynamoDB) databases. Testing: Proficiency in writing unit tests and integration tests for Python applications. 2. Frontend (Intermediate Level): Libraries: Strong knowledge of ReactJS and NodeJS . State Management: Experience with React workflows such as Redux or MobX . Tooling: Familiarity with React Query . Styling: Experience with Material UI , CSS , and HTML . Testing: Experience with frontend testing tools like Jest and Cypress . JavaScript: Solid understanding of JavaScript , TypeScript , and browser rendering behavior. Good to Have Experience with cloud platforms (AWS, Azure, or GCP). Knowledge of containerization (Docker, Kubernetes). Understanding of microservices architecture and message queues (RabbitMQ, Kafka).

🏢 Summary: Senior Python Developer role focused on building and maintaining the backend of a large-scale central sales and information platform integrating multiple digital content systems. The position involves designing and optimizing REST APIs, data models, and system integrations, with real impact on architecture and technical decisions. Hybrid work model in Warsaw with project start ASAP. 🗂️ Requirements: Several years of commercial experience as Backend Developer at senior level, Strong knowledge of Python, Strong knowledge of Django, Practical experience with Django REST Framework, Strong knowledge of PostgreSQL, Experience in database design and SQL, Experience with Docker, Experience with RabbitMQ, Experience with Celery, Availability for hybrid work in Warsaw, Polish language at native level, English language at minimum B2 level 📃 Skills: Python, Django, DjangoREST, PostgreSQL, SQL, Docker, RabbitMQ, Celery, REST, API 🏢 Description: Nasz Klient to organizacja realizująca strategiczne projekty cyfrowe o dużej skali działania, których efekty trafiają do szerokiego grona użytkowników. Projekt koncentruje się na rozwoju centralnego portalu sprzedażowo-informacyjnego, integrującego kilka istniejących systemów sprzedaży treści cyfrowych w jedno spójne rozwiązanie. Dołączysz do zespołu rozwijającego backend odpowiedzialny za agregację danych, obsługę sprzedaży oraz udostępnianie materiałów takich jak zdjęcia, wideo i komunikaty tekstowe. Szukamy doświadczonej osoby na stanowisko Senior Python Developer, która wesprze rozwój architektury, API oraz integracji pomiędzy systemami. TRYB PRACY: Warszawa – hybrydowo (2–3 dni w tygodniu z biura w Warszawie) DOSTĘPNOŚĆ: Start projektu planowany od maja. Poszukujemy osób dostępnych ASAP lub z krótkim okresem wypowiedzenia. CZYM BĘDZIESZ SIĘ ZAJMOWAĆ? Rozwojem i utrzymaniem backendu centralnej platformy sprzedażowo-informacyjnej, która integruje wiele istniejących systemów oraz udostępnia treści cyfrowe użytkownikom końcowym. Projektowaniem, rozwijaniem i optymalizacją API (Application Programming Interface), zgodnie z założeniami przygotowanego MVP oraz docelowej architektury rozwiązania. Implementacją mechanizmów integracji, wymiany danych i synchronizacji pomiędzy kilkoma systemami źródłowymi klienta. Modelowaniem oraz rozwijaniem struktur danych w PostgreSQL i dbaniem o wydajność warstwy backendowej. Współpracą z zespołem frontendowym pracującym w React , analitykami oraz interesariuszami biznesowymi. Udziałem w decyzjach technicznych i proponowaniem najlepszych rozwiązań dla dalszego rozwoju produktu. CZEGO OD CIEBIE OCZEKUJEMY? Must-have: Minimum kilkuletniego doświadczenia komercyjnego w roli Backend Developera, w tym doświadczenia na poziomie senior. Bardzo dobrej znajomości Python oraz frameworka Django przy budowie i rozwijaniu aplikacji backendowych. Praktycznego doświadczenia z Django REST Framework przy projektowaniu i rozwijaniu usług REST API . Bardzo dobrej znajomości PostgreSQL , projektowania baz danych oraz pracy z zapytaniami SQL. Doświadczenia z konteneryzacją aplikacji w Docker . Znajomości kolejek wiadomości RabbitMQ oraz przetwarzania asynchronicznego z wykorzystaniem Celery . Gotowości do pracy hybrydowej w Warszawie (2–3 dni w tygodniu w biurze). Znajomości języka polskiego na poziomie natywnym oraz języka angielskiego na poziomie minimum B2. Nice-to-have: Doświadczenia w projektach integracyjnych łączących wiele systemów w jedno rozwiązanie. Znajomości środowisk regulowanych lub projektów realizowanych dla sektora publicznego. Doświadczenia w pracy przy produktach rozwijanych od fazy MVP do skalowalnego rozwiązania produkcyjnego. Umiejętności mentoringu i wspierania mniej doświadczonych członków zespołu. DLACZEGO WARTO? Długofalowy  projekt z realnym wpływem na rozwój kluczowego rozwiązania cyfrowego. Realny wpływ na architekturę systemu, kierunek rozwoju produktu i decyzje technologiczne. Krótki i sprawny proces rekrutacyjny: 2 etapy Partnerska atmosfera pracy i współpraca z doświadczonym zespołem specjalistów. Dziękujemy za wszystkie zgłoszenia! Skontaktujemy się z wybranymi osobami.

🏢 Summary: Backend Developer role focused on designing and building scalable, secure microservices and APIs using Java and Spring Boot in a cloud-oriented environment. The position emphasizes strong data modeling, architecture design, and CI/CD-driven delivery within Agile teams. The contractor will develop resilient backend solutions and ensure high code quality and reliability. 🗂️ Requirements: Hands-on experience with API and Microservices development in Java or Spring Boot, Proficiency in Java/J2EE application development, Experience with Spring Framework and Hibernate JPA, Experience building and consuming REST web services, Experience working with XML and JSON, Experience with relational or NoSQL databases (Oracle, PostgreSQL, MongoDB), Experience with CI/CD pipelines and Jenkins, Experience with Docker and Git, Unix proficiency, Experience working in Agile methodologies (Scrum or Kanban) 📃 Skills: Java, Spring, SpringBoot, J2EE, Hibernate, JPA, REST, XML, JSON, Oracle, PostgreSQL, MongoDB, Jenkins, Docker, Git, Unix, CICD, Microservices, Agile, Scrum, Kanban 🏢 Description: Location : Cracow Mode : Hybrid (6 days per month at the office - flexible) Contract : B2B Rate : 160-170 PLN/h Introduction & Summary We are seeking a skilled Backend Developer who possesses a deep knowledge of data modeling and architecture. The ideal candidate should have extensive experience in API development using core Java and Spring Boot, with a strong grasp of security principles and Agile methodologies. The role requires an analytical mindset, capable of designing resilient and scalable solutions while working cross-functionally to foster collaboration and innovation. Main Responsibilities Ensure proper definition and architecture of non-functional requirements in design. Develop and grow skills in designing cloud-based, secure, and adaptable solutions. Build scalable, highly reliable product features through effective software design and implementation. Apply problem-solving and analytical skills to diverse challenges. Interact with cross-functional teams for scalable solution production. Estimate engineering efforts and develop realistic schedules. Identify and resolve complex production issues efficiently. Conduct comprehensive design and code reviews and perform unit testing. Utilize source control and bug tracking systems responsibly. Key Requirements Hands-on experience in API and Microservices development using core Java and/or Spring Boot . Proficient in application development using Java/J2EE and related technologies, including Spring Framework and Hibernate JPA. Experience in developing reusable APIs and consuming web services (REST), as well as processing data formats like XML/JSON. Expert knowledge of Agile/Scrum/Kanban development methodologies and experience with databases (Oracle, Postgre, MongoDB). Extensive knowledge of CI/CD deployment pipelines, including Jenkins, Docker, shell scripting, and GIT with Unix proficiency. Nice to Have Experience in JavaScript frameworks such as ReactJs, Node JS, Angular, and jQuery. Familiarity with JavaScript build tools and dependency management. Experience in creating responsive designs using frameworks like Bootstrap. Knowledge of GCP, GKE, AWS is an advantage. Experience or knowledge in system architecture and solution design. Hands-on experience in Python, Machine Learning, and Data Science.

🏢 Summary: Senior Backend Developer role focused on designing and delivering scalable server-side applications and APIs using Python and Django for early-stage B2B SaaS products. The position involves architectural ownership, system reliability, and performance optimization in a fully remote, full-time setup. The developer will drive backend best practices, testing, and CI/CD processes. 🗂️ Requirements: 5+ years of backend development experience, Extensive experience with Python, Extensive experience with Django, Proficiency in data modelling, Experience with relational databases, Experience with non-relational databases, Ability to write complex SQL queries, Experience with API design, Experience with system integrations, Experience with distributed systems (synchronous and asynchronous), Hands-on experience with Docker, Hands-on experience with Redis, Experience with message brokers, Experience with cron jobs, Experience writing unit tests (e.g. Pytest), Strong understanding of code quality and testing best practices, Good command of English for technical communication 📃 Skills: Python, Django, SQL, Docker, Redis, Pytest, APIs, Databases, PostgreSQL, MongoDB, CI/CD, MessageBroker, Cron, Git 🏢 Description: Senior Backend Developer (Python/Django; 100% remote) 💰 Salary: 23,400-25,500 PLN/month 🌎 100% Remote 🕦 Full-time position ☑️ B2B or Contract of Employment We are looking for a Senior Backend Developer for a partner client with a compelling mission: they act as a product and technology partner for early-stage B2B SaaS founders, helping them navigate the crucial journey from launch to their first million in revenue. They essentially become the dedicated tech backbone for these startups. Requirements: 5+ years of professional backend development experience. Extensive, proven experience with Python and the Django framework. Proficient in data modelling, relational and non-relational databases, and complex SQL queries. Strong experience with API design, integrations, and distributed systems (synchronous & asynchronous communication). Hands-on experience with Docker, Redis, message brokers, and cron jobs. Expertise in writing unit tests (e.g., Pytest) and a commitment to code quality and testing best practices. Great understanding of English with strong communication and collaboration skills. Nice to have: Previous experience in Greentech or Ecotech is a significant plus. Experience as an unofficial tech lead or mentoring junior developers. Knowledge of additional testing methodologies (integration, end-to-end). Responsibilities: Lead the design and development of complex server-side applications, APIs, and databases, taking ownership of architectural decisions. Architect, write, and deliver high-quality, scalable, and efficient code using Python and Django. Collaborate closely with cross-functional teams, including front-end developers and the tech lead, to align backend development with project goals. Architect and implement advanced user authentication, authorisation, and security mechanisms. Conduct performance analysis and optimisation, identifying bottlenecks and implementing solutions. Drive the implementation of automated testing and CI/CD processes to ensure code reliability. Establish and enforce coding standards, conduct thorough code reviews, and document backend architecture and APIs. Take responsibility for system reliability, scalability, and security, ensuring best practices. Get to know DevsData We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com

🏢 Summary: Backend development role focused on building and maintaining high-performance, reliable systems in a cloud environment. The position involves close collaboration with frontend teams and deploying containerized applications using AWS infrastructure. The project is remote with a long-term B2B contract and immediate start. 🗂️ Requirements: Proficiency in Python, Experience with backend development, Experience with Pandas, Strong knowledge of Docker, Strong knowledge of Kubernetes, Hands-on experience with AWS services (Lambda, EC2, ECS, EKS), Basic knowledge of Terraform 📃 Skills: Python, Pandas, Docker, Kubernetes, AWS, Lambda, EC2, ECS, EKS, Terraform 🏢 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 : both German and English on minimum B2+ level 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: 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: Frontend Developer role focused on building and maintaining front-end applications that consume REST APIs in a hybrid work model. The position involves coding in line with application requirements, debugging, and enhancing existing solutions while collaborating within a development team. The role requires strong technical expertise in Angular and related technologies, along with effective communication in an international environment. 🗂️ Requirements: Experience with Angular Framework, Strong knowledge of TypeScript, Strong knowledge of JavaScript, Ability to consume and render data via REST APIs, Expertise in Hadoop, Expertise in MapReduce, Ability to reuse existing code in new applications, Fluent English 📃 Skills: Angular, TypeScript, JavaScript, REST, Hadoop, MapReduce, APIs 🏢 Description: General info: Model of work: hybrid (2-3 times per week work from office in Łódź) Type of contract: B2B contract Rate: 80 - 100 PLN net + vat/h Overview We are seeking a skilled Frontend Developer to design, create, and maintain front-end applications that effectively consume REST APIs. The ideal candidate must demonstrate strong communication skills and the ability to explain complex technical topics to non-technical audiences. This role involves ensuring that application code meets all requirements, along with debugging and enhancing application procedures. Main Responsibilities: Designing, creating, and maintaining front-end applications to consume REST APIs. Writing code in accordance with application requirements. Collaborating as part of a software development team to meet standards. Explaining complex technical concepts in clear language. Debugging applications to ensure functionality. Making suggestions for application enhancements and infrastructure improvements. Contributing to a positive work environment through effective teamwork. Key Requirements: Excellent communication skills to build trust with team members and stakeholders. Experience with Angular Framework. Strong knowledge of TypeScript and JavaScript. Ability to consume and render data via APIs. Capability to reuse existing code in new applications. Expertise in Hadoop and MapReduce. Fluent English is a must (daily communication in international environment) Nice to Have: Experience in similar financial institutions or environments. Knowledge of additional programming languages or frameworks. Understanding of DevOps practices.

🏢 Summary: Senior Full-Stack Developer role focused on designing and delivering complex API and microservice integration solutions in a banking environment. The position combines end-to-end solution design with hands-on development, particularly within Azure-based ecosystems. The developer will lead secure, low-latency integrations and support future platform migrations. 🗂️ Requirements: 7+ years of hands-on Azure development experience, Experience with Azure Functions, APIM, Service Bus and Application Insights, Strong proficiency in Python, Strong proficiency in Java or .NET, Experience designing API solutions and microservice integration patterns, Experience building integrations within CRM environments, Experience writing and maintaining unit tests, Experience monitoring and optimizing applications using Application Insights, Ability to design secure, low-latency system integrations 📃 Skills: Azure, Functions, APIM, ServiceBus, AppInsights, Python, Java, .NET, APIs, Microservices, CRM, UnitTesting 🏢 Description: 🌍 Work mode: hybrid (preferably from Krakow or Warsaw): • People from Krakow and Warsaw - 6x per month in the office • People outside of Krakow and Warsaw - 1-2x per month in the office ⏰ Start : June/July 2026. 📝 Contract : B2B. ⏳ Duration : >12 months contracts. 📕 Project language : English. 💼 Industry : Banking. 📑 Workload: Full time. ⚙️ Recruitment process : 1h technical screening on zoom. 💻 Equipment : Work on emagine or your own equipment. We are looking for a Senior Full-Stack Developer who thrives at the intersection of technical design and hands-on execution . In this role, you will be the technical engine driving key initiatives for integration projects. Unlike a traditional architect role, your focus will be on Solution Design: creating the technical 'how-to' for complex integrations and then leading the end-to-end development . Main Responsibilities: Draft end-to-end technical designs for API solutions and microservice integration patterns. Own the full development cycle, ensuring secure, low-latency communication paths between backend systems and UI/UX layers. Manage the technical integration of platforms using Azure Functions and Service Bus. Fine-tune Python-based code while having the agility to refactor logic as needed. Participate in design reviews and incorporate stakeholder feedback. Support discussions surrounding potential migrations to managed environments. Key Requirements: 7+ years of hands-on experience in Azure development (Functions, App Insights, APIM, and Service Bus ). Expertise in Python, with strong proficiency in Java or .NET. A 'quality-first' mindset with extensive experience writing and maintaining unit tests. Deep expertise in using Application Insights for monitoring and optimizing live applications. Proven experience in designing and building integration patterns within a CRM context. Nice to Have: Experience with Google Cloud Platform (GCP). Prior experience with Highspot, Pendo, or MS Dynamics integrations. Other Details: This position will involve working on integration projects, with potential opportunities for remote collaboration. The role emphasizes hands-on development and strategic planning for future migrations.

🏢 Summary: Senior Full-Stack Developer role focused on designing and delivering end-to-end integration solutions within a banking environment, with strong emphasis on Azure-based architectures and hands-on development. The position combines solution design responsibilities with full development lifecycle ownership, particularly around APIs and microservices. Long-term B2B contract with hybrid work model and English-speaking project context. 🗂️ Requirements: 7+ years of experience in Azure development, Hands-on experience with Azure Functions, App Insights, APIM and Service Bus, Strong expertise in Python, Strong proficiency in Java or .NET, Experience in writing and maintaining unit tests, Expertise in Application Insights for monitoring live applications, Experience in designing and building integration patterns in CRM context, Ability to design end-to-end API and microservice integrations 📃 Skills: Azure, Functions, AppInsights, APIM, ServiceBus, Python, Java, .NET, APIs, Microservices, CRM, UnitTesting, GCP 🏢 Description: 🌍 Work mode: hybrid (preferably from Krakow or Warsaw): • People from Krakow and Warsaw - 6x per month in the office • People outside of Krakow and Warsaw - 1-2x per month in the office ⏰ Start : June/July 2026. 📝 Contract : B2B. ⏳ Duration : >12 months contracts. 📕 Project language : English. 💼 Industry : Banking. 📑 Workload: Full time. ⚙️ Recruitment process : 1h technical screening on zoom. 💻 Equipment : Work on emagine or your own equipment. We are looking for a Senior Full-Stack Developer who thrives at the intersection of technical design and hands-on execution . In this role, you will be the technical engine driving key initiatives for integration projects. Unlike a traditional architect role, your focus will be on Solution Design: creating the technical 'how-to' for complex integrations and then leading the end-to-end development . Main Responsibilities: Draft end-to-end technical designs for API solutions and microservice integration patterns. Own the full development cycle, ensuring secure, low-latency communication paths between backend systems and UI/UX layers. Manage the technical integration of platforms using Azure Functions and Service Bus. Fine-tune Python-based code while having the agility to refactor logic as needed. Participate in design reviews and incorporate stakeholder feedback. Support discussions surrounding potential migrations to managed environments. Key Requirements: 7+ years of hands-on experience in Azure development (Functions, App Insights, APIM, and Service Bus ). Expertise in Python, with strong proficiency in Java or .NET. A 'quality-first' mindset with extensive experience writing and maintaining unit tests. Deep expertise in using Application Insights for monitoring and optimizing live applications. Proven experience in designing and building integration patterns within a CRM context. Nice to Have: Experience with Google Cloud Platform (GCP). Prior experience with Highspot, Pendo, or MS Dynamics integrations. Other Details: This position will involve working on integration projects, with potential opportunities for remote collaboration. The role emphasizes hands-on development and strategic planning for future migrations.

🏢 Summary: Hybrid B2B Full-stack Developer role focused on designing and building scalable backend and frontend applications, with strong emphasis on Java/Spring-based microservices and React frontend. The position involves API development, cloud-ready architecture, CI/CD practices, and ensuring non-functional requirements such as security and resilience. The developer will collaborate cross-functionally to deliver reliable, high-quality solutions in an Agile environment. 🗂️ Requirements: Experience developing APIs and Microservices using Java or Spring Boot, Experience with Java/J2EE and Spring Framework, Experience with Hibernate JPA, Experience building and consuming REST web services, Experience processing XML and JSON data, Experience with RDBMS databases (Oracle, PostgreSQL), Experience with MongoDB, Experience working in Agile/Scrum/Kanban methodologies, Experience with CI/CD pipelines, Experience with Jenkins, Experience with Docker, Experience with Git, Knowledge of Unix, Frontend experience with React.js, Experience with JavaScript and TypeScript, Understanding of code security principles 📃 Skills: Java, Spring, SpringBoot, J2EE, Hibernate, JPA, REST, XML, JSON, Oracle, PostgreSQL, MongoDB, Jenkins, Docker, Git, Unix, React, JavaScript, TypeScript, CI/CD 🏢 Description: Summary: The Full-stack Developer role focuses on developing and maintaining applications across both backend and frontend, ensuring a balanced skill set in both areas to accommodate market demands. Work model: Hybrid (6 times per month work from office-Cracow) Business trips: n/a Start: ASAP/ one month notice period Assignment type: B2B Budget: 150-170 zł/h Main Responsibilities: Knowledge of Data modelling and Data Architecture concepts, security concepts, Architecture design, Business Functional Domains. Awareness of Infrastructure Design, Integration concepts, techniques, and patterns. Ensuring non-functional requirements (NFRs) are architected into the design, including API governance for various types of APIs. Developing skills for cloud design, creating resilient and flexible solutions. Building scalable and reliable product features through design, implementation, and maintenance of applications. Applying problem-solving and analytical skills to a variety of issues. Collaborating with cross-functional teams for scalable solutions. Estimating engineering efforts and creating realistic schedules. Identifying and resolving complex production issues. Rapidly fixing bugs and solving problems. Conducting design and code reviews, performing unit-testing for robustness and reliability. Utilizing source control and bug tracking systems effectively. Key Requirements: Hands-on experience in developing APIs and Microservices using core Java and/or Spring Boot; understanding of code security principles. Experience with application development in Java/J2EE, including Spring Framework and Hibernate JPA. Experience in developing reusable APIs and working with web services (REST), processing data (XML/JSON). Expertise in Agile/Scrum/Kanban methodologies, with experience in working with Databases (RDBMS) - Oracle, PostgreSQL, MongoDB. Expertise with CI/CD pipelines, Jenkins, Docker, shell scripting, and GIT; knowledge of Unix. Frontend experience with React.js, JavaScript, and TypeScript. Nice to Have: Experience in JavaScript frameworks such as React.js, Node.js, Angular, and jQuery. Familiarity with JavaScript build tools and dependency management. Experience in creating responsive web designs (Bootstrap, mobile, etc.). Experience with cloud platforms such as GCP, GKE, AWS is advantageous. Knowledge in system architecture and solution design. Experience with Python, Machine Learning, and Data Science.