Senior Fullstack Developer

🏢 Summary: Senior Fullstack Developer role in an international product development team focused on building and maintaining secure, scalable fullstack applications using Java and modern frontend technologies. The position involves hands-on backend and frontend development, microservices architecture, SPA development, and collaboration within Agile teams in an English-speaking environment. Hybrid work model in Warsaw with long-term B2B engagement. 🗂️ Requirements: 10+ years of software development experience, Strong fullstack development experience, Expert knowledge of Java, Experience with Spring, Experience building microservices, Experience with Single Page Applications, Knowledge of frontend technologies, Experience designing secure and scalable applications, Understanding of testing and code quality practices, Experience working in Agile environments, Strong analytical and problem-solving skills, Very good English skills, EU citizenship, Residence in Poland 📃 Skills: Java, Spring, SpringBoot, Microservices, SPA, Agile, CI/CD, DevOps, Docker, Kubernetes, Cloud 🏢 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 Senior Fullstack Developer to join an international team responsible for developing and maintaining modern, secure, and scalable applications supporting critical business processes. You will work in a hands-on development role across both backend and frontend technologies, contributing to high-quality software delivery while collaborating with international stakeholders in an English-speaking environment. Project information: Type of project: Product Development Office location: Warsaw, Poland Work mode: Hybrid (3 days from the office, 2 days remotely) 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 modern fullstack applications Build secure, scalable, maintainable, and testable software aligned with business requirements Develop and evolve Java-based microservices using Spring Boot Design and implement modern Single Page Applications (SPA) following frontend best practices Collaborate closely with business and technical stakeholders to translate requirements into high-quality technical solutions Ensure application reliability, performance, and service continuity Follow software engineering best practices, including code quality, testing, and security standards Participate in code reviews and contribute to continuous improvement initiatives Work within Agile development teams in an international English-speaking environment Support the evolution of existing applications while contributing to the development of new features and services Competence demands: 10+ years of professional experience in software development Strong experience as a full-stack developer with expertise in backend and frontend development Excellent knowledge of Java and Spring Boot Proven experience developing microservices-based applications Strong experience with modern frontend technologies and Single Page Applications (SPA) Experience designing secure, scalable, and high-performance applications Solid understanding of software engineering best practices, including testing, code quality, and clean architecture Experience working in Agile development environments Strong analytical and problem-solving skills Excellent communication skills and ability to collaborate with business and technical stakeholders Very good English skills Nice to have: Experience with cloud platforms Knowledge of CI/CD pipelines and DevOps practices Experience with containerization technologies such as Docker and Kubernetes Experience working in international enterprise environments We offer: Hybrid 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 inssurance Recruitment process: Introductory call Technical interview Final decision

🏢 Summary: Senior Full Stack Developer role focused on designing and implementing high-quality Java-based applications within a microservices architecture. The position involves backend development with Spring Boot, database integration, containerized deployments, and collaboration in an agile team environment. The role emphasizes code quality, operational excellence, and modern DevOps practices. 🗂️ Requirements: 5-6 years of experience in software development, Proven experience with Java, Experience with Spring or Quarkus, Strong proficiency in relational databases, Experience with Docker, Experience with Kubernetes, Experience with GitLab, Experience with Maven, English level B2 or higher 📃 Skills: Java, Spring, Quarkus, SQL, Oracle, Postgres, Docker, Kubernetes, GitLab, Maven, Angular, Kafka, ActiveMQ, Helm, Microservices 🏢 Description: Summary The purpose of the Senior Full Stack Developer role is to design and implement high-quality software solutions while collaborating within a team. This position focuses on leveraging a well-defined technology stack and ensuring the operational excellence of applications. Responsibilities: Develop and maintain robust applications using JAVA and Spring Boot. Work on microservices architecture. Manage application deployment using Helm Charts. Collaborate effectively with team members and communicate openly. Ensure code quality and adhere to best practices in software development. Maintain knowledge of UI frameworks, particularly Angular. Utilize messaging systems like ActiveMQ or event platforms like Kafka as needed. Handle relational databases (e.g., Oracle, Postgres). Must Haves: Proven experience with Java and Spring (or Quarkus). Strong proficiency in relational databases. Minimum of 5-6 years of working experience. Familiarity with Docker, Kubernetes, GitLab, and Maven. Nice to Haves: Experience with Angular UI frameworks. Knowledge of microservices. Experience with message brokers like ActiveMQ or event-streaming platforms like Kafka. Fluency in German. Other Details: Language Proficiency: English (B2 level), German is desirable. Soft Skills: Team player, proactive communication, self-organization. Responsibility: Accountability and ownership for projects. Interest: Engagement in the business field of taxes.

🏢 Summary: Hybrid B2B contract role for a Senior Full Stack Developer responsible for end-to-end design, development, and maintenance of scalable web applications in a cloud-based environment. The position involves working in an agile team to build modern full-stack solutions using JavaScript frameworks and enterprise integrations. The role emphasizes high code quality, testing practices, and cloud architecture support. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field, 8+ years of full-stack software development experience, Strong expertise in JavaScript frameworks (Angular preferred), Strong backend development experience (NestJS preferred), Hands-on experience with PostgreSQL and advanced SQL, Experience with Jest and Cypress testing frameworks, Practical experience with cloud platforms (AWS, Azure or GCP) 📃 Skills: JavaScript, Angular, React, NestJS, PostgreSQL, SQL, Jest, Cypress, AWS, Azure, GCP, REST, Docker, Kubernetes, Nx, Python, FastAPI 🏢 Description: Praca hybrydowa, Warszawa Zatrudnienie w oparciu o B2B Role Overview The Senior Full Stack Developer is responsible for the end-to-end design, development, deployment, and ongoing maintenance of custom software solutions. The role operates within an agile, fast-paced environment and works closely with product owners and cross-functional team members to deliver scalable full-stack web applications. It also plays a key role in promoting engineering excellence and supporting modern cloud-based architectures. Key Responsibilities Contribute to multiple initiatives within an agile development environment, delivering high-quality software at pace Design, build, and maintain modern full-stack web applications using contemporary JavaScript frameworks such as React or Angular Collaborate with product owners and stakeholders to understand business requirements and translate them into technical solutions Implement and uphold software engineering best practices, including code quality standards, testing strategies, and peer reviews Participate in code reviews, unit testing, and continuous improvement of development practices Ensure application performance, scalability, and reliability through monitoring and optimization activities Integrate applications with existing enterprise systems to enable automation, data flow, and analytics capabilities Support ongoing enhancement of applications within cloud-based environments Requirements (Must-Have) Bachelor’s degree in Computer Science or a related field 8+ years of experience in full-stack software development Strong expertise in JavaScript frameworks (Angular preferred) and backend development (NestJS preferred) Hands-on experience with relational databases such as PostgreSQL, including advanced SQL usage Experience with testing frameworks such as Jest and Cypress Practical experience with cloud platforms (AWS preferred, also Azure or GCP acceptable) Strong problem-solving skills with the ability to balance business needs and technical constraints High sense of ownership, accountability, and commitment to delivering quality outcomes in team environments Motivation to work in a fast-scaling, innovation-driven organization Nice to Have Master’s degree in Computer Science or related discipline Experience in life sciences, biotech, or other regulated/scientific industries Knowledge of REST API design, containerization technologies (Docker, Kubernetes), and cloud-native architecture Familiarity with Agile delivery practices and technical documentation standards Experience working in regulated environments Exposure to Nx monorepo tools Experience with AI-assisted development tools such as GitHub Copilot or similar solutions, including understanding of their limitations and security implications Basic knowledge of Python and FastAPI

🏢 Summary: Senior Fullstack Developer role focused on modernizing banking systems through REST API development, microservices extraction, and system integrations. The position involves refactoring legacy applications and contributing to both microservice and monolith architectures in an international environment. Hybrid work model with B2B contract. 🗂️ Requirements: Minimum 6 years of experience in Java development, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience with REST API development, Experience with microservices architecture, Experience with Git, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, Git, Angular, Reactive, DDD, Cucumber, SAFe 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) Summary: The role of a Senior Fullstack Developer focuses on modernizing systems, enhancing customer experience through API development, and ensuring seamless integration of various services. Main Responsibilities: Core duties include building REST API solutions and collaborating with teams to create optimal solutions. Building REST API solutions and integrations with other applications Refactoring legacy applications by extracting logic into microservices Collaborating with other developers, teams, and stakeholders to create optimal solutions Participating in the development and continuous improvement of services in both microservice and monolith architectures Key Requirements: Hands-on experience in Java development (at least 6 years preferred) Familiarity with reactive programming Working knowledge of Spring and Hibernate frameworks Experience with SQL, REST, Microservices, and GIT At least 2 years of experience with Angular Nice to Have: Familiarity with the DDD (Domain-Driven Design) approach Experience with Cucumber framework Previous work in an international team with English as the common language Exposure to SAFE Agile methodologies Other Details: Team Composition: International team. Communication Language: English.

🏢 Summary: Senior Fullstack Developer role focused on modernizing banking systems through REST API development, microservices extraction, and system integrations. The position involves enhancing customer-facing services and contributing to both microservice and monolith architectures in an international environment. Hybrid work model with B2B contract up to 170 PLN/h. 🗂️ Requirements: Minimum 6 years of commercial experience in Java development, Experience with reactive programming, Working knowledge of Spring framework, Working knowledge of Hibernate, Experience with SQL, Experience building REST APIs, Experience with microservices architecture, Experience with GIT, Minimum 2 years of experience with Angular 📃 Skills: Java, Spring, Hibernate, SQL, REST, Microservices, GIT, Angular, Cucumber, DDD 🏢 Description: Industry: Banking Work model: Hybrid in Warsaw or Tricity - 3 days a week in the office Rate: up to 170 PLN/h (B2B contract) Summary: The role of a Senior Fullstack Developer focuses on modernizing systems, enhancing customer experience through API development, and ensuring seamless integration of various services. Main Responsibilities: Core duties include building REST API solutions and collaborating with teams to create optimal solutions. Building REST API solutions and integrations with other applications Refactoring legacy applications by extracting logic into microservices Collaborating with other developers, teams, and stakeholders to create optimal solutions Participating in the development and continuous improvement of services in both microservice and monolith architectures Key Requirements: Hands-on experience in Java development (at least 6 years preferred) Familiarity with reactive programming Working knowledge of Spring and Hibernate frameworks Experience with SQL, REST, Microservices, and GIT At least 2 years of experience with Angular Nice to Have: Familiarity with the DDD (Domain-Driven Design) approach Experience with Cucumber framework Previous work in an international team with English as the common language Exposure to SAFE Agile methodologies Other Details: Team Composition: International team. Communication Language: English.

🏢 Summary: Senior FullStack Developer role in the banking sector focused on maintaining and enhancing a Corporate Netbank application for large corporate clients. The position involves developing new features, fixing bugs, handling production incidents, and modernizing legacy systems within microservice and monolithic architectures. This is a 12-month hybrid contract in Warsaw with strong emphasis on backend and frontend development. 🗂️ Requirements: Minimum 5 years experience with Java 7/8, Minimum 5 years experience with Spring Framework and Spring Boot, Minimum 5 years experience with Maven, Minimum 5 years experience with JSP and JavaScript, Minimum 5 years experience with Git, Minimum 5 years experience with SQL, Experience in designing and implementing REST APIs, Backend services design and implementation experience, Experience with unit testing, Minimum 2 years experience with Angular, Experience with Jasmine, Experience working with microservice and monolithic architectures, Ability to analyze and work with legacy code 📃 Skills: Java, Spring, SpringBoot, Maven, JSP, JavaScript, Git, SQL, REST, Angular, Jasmine, Microservices, Monolith, UnitTesting 🏢 Description: Location: hybrid - 3 days a week from the office in Warsaw Duration of assignment: 12 months first contract (prolongation expected). Language: English Industry: banking. Workload: Full time. Overview The position of Senior FullStack Developer is a crucial role within our Corporate Netbank system team. You will contribute significantly to enhancing an application designed for large corporate clients to manage their accounts efficiently. The developer should possess strong experience in backend and frontend technologies, with a collaborative mindset and a commitment to excellence. Main Responsibilities Maintain and enhance the Corporate Netbank Application. Implement new features and bug fixes. Respond to production incidents and make compliance changes. Develop and improve services in both microservice and monolithic architectures. Participate in transitioning from legacy systems to modern solutions. Key Requirements Minimum 5 years of experience with Maven, JSP, JavaScript, Java 7/8, Git, Spring Framework, Spring Boot, SQL. Proven experience in writing REST APIs. Backend services design and implementation skills. Experience in unit testing. At least 2 years of experience with Angular and Jasmine. Proficient in agile working environments. Strong analytical skills for legacy code. Excellent communication skills. Fluency in English. Nice to Have Knowledge of SOLID principles and design patterns.

🏢 Summary: 12-month full-time contract (with possible extension) for a Senior FullStack Developer to enhance and maintain a Corporate Netbank application in the banking sector. The role focuses on developing and modernizing backend and frontend components, implementing new features, fixing bugs, and supporting production in both microservice and monolithic architectures. Hybrid work model with 3 days per week in the Warsaw office. 🗂️ Requirements: Minimum 5 years experience with Java 7/8, Minimum 5 years experience with Spring Framework, Minimum 5 years experience with Spring Boot, Minimum 5 years experience with Maven, Minimum 5 years experience with JSP, Minimum 5 years experience with JavaScript, Minimum 5 years experience with SQL, Minimum 5 years experience with Git, Experience writing REST APIs, Backend service design and implementation, Experience with microservice architecture, Experience with monolithic architecture, Experience in unit testing, Minimum 2 years experience with Angular, Minimum 2 years experience with Jasmine, Experience working in Agile environments 📃 Skills: Java, Maven, JSP, JavaScript, SQL, Git, Spring, SpringBoot, REST, Angular, Jasmine, Microservices, Monolith, UnitTesting 🏢 Description: Location: hybrid - 3 days a week from the office in Warsaw Duration of assignment: 12 months first contract (prolongation expected). Language: English Industry: banking. Workload: Full time Overview The position of Senior FullStack Developer is a crucial role within our Corporate Netbank system team. You will contribute significantly to enhancing an application designed for large corporate clients to manage their accounts efficiently. The developer should possess strong experience in backend and frontend technologies, with a collaborative mindset and a commitment to excellence. Main Responsibilities Maintain and enhance the Corporate Netbank Application. Implement new features and bug fixes. Respond to production incidents and make compliance changes. Develop and improve services in both microservice and monolithic architectures. Participate in transitioning from legacy systems to modern solutions. Key Requirements Minimum 5 years of experience with Maven, JSP, JavaScript, Java 7/8, Git, Spring Framework, Spring Boot, SQL. Proven experience in writing REST APIs. Backend services design and implementation skills. Experience in unit testing. At least 2 years of experience with Angular and Jasmine. Proficient in agile working environments. Strong analytical skills for legacy code. Excellent communication skills. Fluency in English. Nice to Have Knowledge of SOLID principles and design patterns.

🏢 Summary: Senior Fullstack Developer role focused on building and scaling high-availability microservices-based systems in a large-scale digital transformation program. The position involves developing backend services in Java (Spring Boot) and contributing to Angular frontend, with strong emphasis on performance, integration, and DevOps collaboration. The role includes architectural input and ensuring high code quality within CI/CD environments. 🗂️ Requirements: Min. 5 years of experience with Java, Min. 5 years of experience with Spring, Spring Boot, Spring Cloud, Hibernate, Experience with Liquibase, Experience with Angular, Experience with Apache Kafka, Experience with Git and Maven, Experience in writing unit tests, Knowledge of OOP and Functional Programming, Experience with Docker and Kubernetes, Knowledge of RabbitMQ and ElasticSearch, Ability to scale systems and optimize performance, Knowledge of application performance diagnostics tools 📃 Skills: Java, Spring, SpringBoot, SpringCloud, Hibernate, Liquibase, Angular, TypeScript, Kafka, RabbitMQ, Git, Maven, Docker, Kubernetes, ElasticSearch, OOP, FunctionalProgramming, Microservices, CICD, Sonar, IntelliJ, Jira, Bitbucket, Bamboo 🏢 Description: Dla naszego klienta – jednej z największych instytucji finansowo-ubezpieczeniowych w Europie Środkowo-Wschodniej, realizującej zaawansowane projekty cyfrowe i technologiczne na dużą skalę – poszukujemy doświadczonego Senior Fullstack Developera . Firma przechodzi intensywną transformację cyfrową, rozwijając nowoczesne systemy o wysokiej dostępności i wydajności. Stack technologiczny Back-end: Java, Spring, Spring Boot, Hibernate, Liquibase, Kafka Front-end: Angular, TypeScript DevOps & środowisko: Docker, Kubernetes Narzędzia: IntelliJ, Jira, Bitbucket, Bamboo, Sonar, CI/CD Zakres obowiązków Projektowanie i rozwój nowoczesnych aplikacji w architekturze mikroserwisowej Tworzenie oraz rozwój warstwy backendowej w Javie (Spring Boot) Współtworzenie i rozwój frontendu w Angularze Integracja systemów z wykorzystaniem Kafki oraz RabbitMQ Optymalizacja wydajności oraz skalowanie aplikacji Udział w projektowaniu rozwiązań architektonicznych Współpraca z zespołem DevOps w zakresie CI/CD oraz wdrożeń Dbanie o jakość kodu (testy jednostkowe, code review, Sonar) Wymagania (Must Have) Bardzo dobra znajomość Java (min. 5 lat) Bardzo dobra znajomość Spring / Hibernate, Spring Boot, Spring Cloud (min. 5 lat) Dobra znajomość Liquibase Doświadczenie w pracy z Angular Doświadczenie z Apache Kafka Znajomość Git, Maven Doświadczenie w pisaniu testów jednostkowych Znajomość paradygmatów OOP oraz Functional Programming Doświadczenie z Docker, Kubernetes Znajomość RabbitMQ, ElasticSearch Umiejętność skalowania systemów oraz optymalizacji wydajności Znajomość narzędzi do diagnostyki wydajności aplikacji Oferujemy Umowa B2B oraz stabilna, długoterminowa współpraca Prywatna opieka medyczna Luxmed Karta sportowa Multisport Praca hybrydowa (1 x w tygodniu przyjazd do biura w Warszawie) Proces rekrutacyjny: Rozmowa HR - 20 min Spotkanie z klientem - 1 h

🏢 Summary: Senior Fullstack Software Engineer role focused on building scalable, cloud-native applications with a strong backend emphasis (70% backend, 30% frontend). The position involves designing distributed, event-driven systems on AWS, developing REST APIs, and contributing across the full stack using Node.js, TypeScript, React, and Next.js. The engineer will drive architectural decisions, scalability, and technical direction while collaborating with cross-functional teams in a US-aligned remote environment. 🗂️ Requirements: Strong experience as Senior Software Engineer in product-focused environments, Advanced backend development with Node.js and TypeScript, Experience building and consuming REST APIs, Frontend development experience with React and TypeScript, Experience with AWS or other cloud platforms, Strong knowledge of distributed and scalable system design, Experience with MySQL and PostgreSQL databases, Experience with event-driven architectures, Experience with queuing or messaging systems, Ability to write clean, maintainable, scalable code, Strong debugging and problem-solving skills, Availability to work overlapping US hours 📃 Skills: Node.js, TypeScript, React, Next.js, AWS, REST, MySQL, PostgreSQL, SQL, APIs, Microservices, Event-driven, Messaging, Queues, Cloud, Distributed-systems 🏢 Description: Fullstack Senior Software Engineer Location: Remote We are looking for a talented Senior Fullstack Software Engineer to join a high-performing product engineering team focused on building scalable, modern cloud-native applications. This role is best suited to an experienced engineer who is stronger on the backend (approximately 70% backend / 30% frontend) and enjoys designing robust distributed systems while still being comfortable contributing across the full stack. You will play a key role in shaping technical direction, building scalable event-driven platforms, and contributing to product thinking - not just delivering code. We are looking for someone with strong ownership, accountability, and the ability to think about the wider business and customer impact of the solutions they build. This position requires alignment with US-based teams, and so the working hours must overlap. What You'll Be Doing Designing, building, and maintaining scalable backend services using Node.js and TypeScript Developing and supporting modern frontend applications using React and Next.js Building robust RESTful APIs and backend integrations Contributing to distributed, cloud-native systems running on AWS Designing and implementing event-driven architectures and queue-based systems Working with SQL databases including MySQL and PostgreSQL Driving engineering best practices, scalability, reliability, and performance improvements Collaborating closely with Product, Engineering, and stakeholders to shape technical solutions Taking ownership of features and systems throughout the full software lifecycle Mentoring engineers and contributing to technical discussions and architectural decisions Required Skills & Experience Strong experience as a Software Engineer / Senior Software Engineer in modern product-focused environments Excellent backend development experience with: Node.js TypeScript REST APIs React TypeScript Experience building applications in AWS cloud environments (or other cloud platforms) Strong understanding of scalable and distributed system design MySQL PostgreSQL Proven experience building event-driven architectures and working with queuing/messaging systems (highly important) Ability to write clean, maintainable, and scalable code Strong problem-solving and debugging skills What We're Looking For Strong product mindset - someone who thinks beyond just delivering tickets and understands the "why" behind engineering decisions Ownership and accountability for technical delivery and outcomes Ability to contribute to architectural direction and scalability initiatives Comfortable working in fast-paced, collaborative engineering environments Passion for building high-quality, scalable software products Strong communication and stakeholder collaboration skills

🏢 Summary: Senior Fullstack Developer role focused on building sustainable crop science solutions in a global agile environment. The position involves developing and optimizing fullstack applications, solving identity and account management challenges, and designing scalable cloud-based architectures using modern JavaScript technologies. Fully remote work opportunity based in Warsaw with strong emphasis on innovation, collaboration, and mentoring. 🗂️ Requirements: 5+ years of software development experience, Strong JavaScript knowledge, Experience with Node.js backend development, Proficiency in TypeScript, Strong React frontend development skills, Experience with AWS services, English communication skills, Experience working in agile global teams, Legal right to work in Europe 📃 Skills: JavaScript, Node.js, TypeScript, React, AWS, DynamoDB, Lambda, StepFunctions, Medusa, SAP, Salesforce 🏢 Description: Ignite innovation in environmental care — shape sustainable solutions through cutting-edge software engineering. As a Senior Fullstack Developer, you will be working for a global leader in healthcare and agriculture. You will contribute to solving major global challenges by developing innovative crop science solutions that promote sustainability, resilience, and community well-being. This role offers a platform for impactful work and career growth in a dynamic, global environment. Your main responsibilities: - Develop and support business-critical solutions within an agile, product-oriented team. - Solve organization-wide challenges related to identity and account management. - Design and document technical architecture and software solutions across multiple teams. - Ensure consistency, quality, and performance of all developed solutions. - Evaluate and recommend new technologies to enhance system efficiency and scalability. - Build and maintain relationships with key stakeholders and partner organizations. - Mentor junior engineers, fostering technical growth and best practices. - Continuously enhance your technical skills in a fast-paced environment. You're ideal for this role if you have: - 5+ years of experience in software development or engineering. - Strong problem-solving skills, proactive attitude, and collaborative mindset. - Deep knowledge of JavaScript, including runtimes, APIs, and ecosystem. - Extensive experience with backend development using Node.js. - Proficiency in TypeScript and writing clean, maintainable code. - Strong front-end skills in React, build tools, and performance optimization. - Cloud expertise with AWS services, including DynamoDB, Lambda, and Step Functions. - Product-oriented mindset, understanding business domains to suggest pragmatic solutions. - Excellent English communication skills and experience working in an agile, global team. - Willingness to learn, develop, and innovate in a fast-paced environment. It is a strong plus if you have: - Knowledge of Medusa.js. - Experience with SAP or Salesforce integrations. Language required for the role: - Communicative English. Eligibility to work in: - Only candidates with an existing legal right to work in Europe will be considered for this role. Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.