Mid Java Developer

🏢 Summary: B2B role in a financial project focused on building and optimizing large-scale Big Data pipelines for analytical and regulatory reporting. The position involves designing and maintaining distributed data processing solutions using Hadoop and Spark ecosystems to ensure high data quality, scalability, and compliance. Work is delivered in an Agile (SAFe) environment with hybrid model from selected Polish cities. 🗂️ Requirements: Minimum 3 years of programming experience in Scala, Hands-on experience with Apache Spark for batch and distributed processing, Strong knowledge of Hadoop ecosystem (YARN, Sqoop, Hive, Oozie, Impala, MapReduce), Experience with ETL processes for large-scale data, Proficiency in SQL and working with large datasets, Experience with Linux Shell scripting, Knowledge of Git and CI/CD tools, Understanding of data modeling and performance tuning, Ability to work in Agile (SAFe) environment 📃 Skills: Scala, Spark, Hadoop, YARN, Sqoop, Hive, Oozie, Impala, MapReduce, SQL, Linux, Git, Jenkins, Bamboo, Ansible, ETL, EMR 🏢 Description: Salary: 1100 - 1300 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (3 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project You will be involved in a financial project focused on building and optimizing large-scale data processing pipelines for analytical and regulatory reporting . The main goal of the initiative is to consolidate, transform, and analyze financial and transactional data to support decision-making, compliance, and risk management. The project leverages support decision-making, compliance, a Big Data technologies to ensure high data quality, scalability, and performance across complex data ecosystems. Responsibilities you'll have Design, develop, and maintain data processing pipelines using Hadoop and Spark ecosystems Implement and optimize ETL (Extract, Transform, Load) processes for large volumes of financial data Collaborate with analysts, data scientists, and other developers to deliver high-quality, production-ready data solutions Ensure data integrity, accuracy, and security across distributed data systems Participate in code reviews , contribute to continuous integration and deployment (CI/CD) , and maintain development best practices Support and troubleshoot Big Data applications running in a multi-cluster environment (e.g., YARN, EMR) Work in an Agile (SAFe) team environment, participating in sprints, planning, and retrospectives Contribute to the continuous improvement of development processes and data platform architecture Expected competences and knowledge Strong programming experience in Scala (min. 3 years) Proven hands-on experience with Apache Spark for batch and distributed data processing Solid understanding of Hadoop ecosystem components (YARN, Sqoop, Hive, Oozie, Impala, MapReduce) Experience with Linux Shell scripting and automation Proficiency in SQL and working with large, complex datasets Knowledge of version control and CI/CD tools (Git, Jenkins, Bamboo, Ansible, etc.) Good understanding of data modeling, performance tuning , and data lifecycle management Strong problem-solving skills, ownership mindset, and ability to work in a collaborative team environment Nice to have: Familiarity with Java, Flink, Kafka , and streaming data pipelines Experience with SAFe Agile methodology and data analysis techniques Experience with functional programming techniques & principles Scala Familiarity with Data Analysis Technologies you'll work with Hadoop (YARN, EMR, Sqoop, Hive, Oozie, Impala, MapReduce) Spark SQL Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: B2B role for an experienced Java Developer to design and develop high-availability, horizontally scalable microservices supporting an advertising and billing platform. The position involves working on production systems with real impact on architecture, distributed communication, and system performance. Collaboration with cross-functional teams and Polish-speaking stakeholders is required. 🗂️ Requirements: Minimum 4 years commercial experience as Java Developer, Hands-on experience in production environments, Higher education in relevant field (completed or in progress), Professional proficiency in Polish (spoken and written), Strong knowledge of Java 11+, Practical experience with Spring Boot, Experience with microservices architecture in production, Experience with Kafka or RabbitMQ, Understanding of distributed systems, Advanced knowledge of SQL without ORM usage, Experience with monitoring, logging and metrics, Understanding of asynchronous communication, Familiarity with reactive programming 📃 Skills: Java, Spring, SpringBoot, SQL, NoSQL, Kafka, RabbitMQ, WebFlux, Reactor, Microservices, Kotlin, Hibernate, JPA, Monitoring, Logging 🏢 Description: Salary: 750 - 1000 PLN/MD on B2B Work model: elastic hybrid from Gdynia/Warszawa/Rzeszów/Kraków Why choose this offer? Real impact on system architecture Opportunity to design solutions with high availability and horizontal scalability Collaboration within a mature, cross-functional team Direct communication with Product Owners and non-technical stakeholders Project The team is directly involved in managing advertising campaigns. This enables sellers and advertising agencies to create ads, which are then delivered for airing on the company's portal (e.g., sponsored listings, homepage) and on other platforms such as Google. Additionally, the team is responsible for budgeting and advertising billing. They collaborate closely with teams handling the airing of various types of ads, frontend development, and offers visible on the portal. The project is conducted primarily in Polish, therefore professional working proficiency in Polish (spoken and written) is required. Expected competences and knowledge Minimum 4 years of commercial experience as a Java Developer, with mandatory hands-on experience in production environments Required higher education in a relevant field (or currently in progress) Fluent or professional working proficiency in Polish (spoken and written) Good knowledge of Java 11+ (Kotlin is a plus) First hands-on experience with Spring Boot Practical experience with microservices architecture in production environments Familiarity with messaging systems such as Kafka or RabbitMQ Basic understanding of distributed systems and asynchronous communication Solid understanding of relational databases ( SQL ), including indexes, constraints, and transactions (without relying on ORM frameworks such as Hibernate/JPA) Experience working with monitoring, logging, and application metrics Ability to work in a cross-functional team environment Familiarity with reactive programming concepts Technologies you'll work with Java 11+ Spring Boot NoSQL databases Spring WebFlux / Project Reactor Relational databases (advanced SQL) Nice to have: Kafka Kotlin Event-driven architecture Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999 . With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021 , with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale , where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Senior Backend Java Developer role in a long-term project building scalable, high-performance backend systems integrated with AWS cloud services. The position focuses on clean architecture, batch processing, and containerized deployments within an agile environment. Opportunity to shape technical decisions while working on a business-critical enterprise system. 🗂️ Requirements: Minimum 8 years of experience in Java backend development, Strong proficiency in Java, Solid knowledge of PostgreSQL, Experience with database optimization, Hands-on experience with Hibernate Criteria API, Experience with Spring Boot, Experience with Spring Batch, Experience with batch processing, Practical knowledge of AWS services (ECS, S3, RDS), Experience with Docker, Knowledge of REST API design, Understanding of clean architecture principles 📃 Skills: Java, Spring, SpringBoot, SpringBatch, Hibernate, PostgreSQL, AWS, ECS, S3, RDS, Docker, REST, SQL, AI 🏢 Description: Salary: 1200 - 1600 pln/md on B2B Hybrid model : hybrid from Gdynia (2 day working from the office, final details to be discussed with the team) Why choose this offer? Be part of a development team working on a long-term project Opportunity to shape technical decisions and best practices from the start Work on a scalable, high-performance system with a strong focus on clean architecture Gain hands-on experience with cloud technologies and containerization Project This project will focus on developing scalable backend solutions for high-demand business operations, integrating cloud services, and ensuring system reliability. You will work in an agile environment with a strong emphasis on code quality, clean architecture, and performance optimization. Expected competences and knowledge Min. 8 years of experience and proficiency in Java and backend development principles Solid understanding of PostgreSQL and database optimization techniques Hands-on experience with Hibernate Criteria API for efficient data queries Experience with Docker for containerization and deployment In-depth knowledge of the Spring ecosystem ( Spring Boot, Spring Batch) Experience in batch processing using Spring Batch Practical knowledge of AWS services , including ECS, S3, and RDS Openness to adopting and working with AI tools What you'll be doing Developing new application modules based on business requirements Reviewing and improving code , ensuring high maintainability and scalability Designing and implementing efficient backend solutions Writing clean, structured, and scalable code following best practices Technologies you'll work with Java Spring (Boot, Batch) Hibernate REST API PostgreSQL AWS (ECS, S3, RDS) Docker AI Client – why choose this particular client from the Jit portfolio? We have partnered with our Client, a leading HR company with over 60 years of experience and a presence in multiple countries around the world. Our Client provides a wide range of recruitment and job placement services and is dedicated to helping individuals achieve their career goals. In Poland, our Client has been operating for over 20 years and is at the forefront of digitization in the HR services industry. Our team has been building the Time tracking system for our Client since 2019 , a complex tool for registering and settling the working time of full-time and temporary employees working under different legal and organizational conditions, supporting on-boarding processes, and integrating with the employee portal and mobile app. As a member of Jit Team, you will have the opportunity to work on a modern, complex enterprise-class system built in modern technologies such as Java and the AWS cloud . With a business-critical operation, the Work Time system settles working time for tens of thousands of employees every month and contributes to our Client's revenue. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Remote B2B role focused on designing and implementing a new integration layer between BAM services and the PowerBid system, replacing the existing Exchange Tool. The position involves developing interfaces, ensuring system compatibility, and executing cutover and rollback strategies in an international energy market environment. You will work with modern backend and container technologies while influencing technical solutions. 🗂️ Requirements: Strong experience with Java, Strong experience with Spring Boot, Strong experience with Kotlin, Experience with Docker, Experience with Kubernetes, Experience with Kafka, Experience with PostgreSQL, Experience with Rich Client applications, Degree in Computer Science or related field, Knowledge of requirement engineering, Fluent English 📃 Skills: Java, SpringBoot, Kotlin, Kafka, Kubernetes, Docker, PostgreSQL, JavaScript, TypeScript, Angular 🏢 Description: Salary: 1000 - 1300 PLN/MD on B2B Work model: Remote Availability: ASAP or within 14 days preferred Why choose this offer? You will work in an international environment , collaborating with teams and stakeholders from different countries. Opportunity to take ownership of the development process and influence the technological direction of the solutions you build. The energy market is in an exciting transition , moving away from fossil fuels towards decentral solutions, renewables, and energy efficiency Project The project focuses on implementing a new integration layer between existing BAM services and the PowerBid system , replacing the current Exchange Tool. It includes designing and developing interfaces/adapters, ensuring system compatibility, and delivering full technical documentation. The work also involves defining and executing a cutover and rollback strategy to ensure a smooth transition. Expected competences and knowledge Strong experience with Java, Spring Boot, and Kotlin Hands-on experience with JavaScript/TypeScript and Angular (nice to have) Experience with Docker and Kubernetes Familiarity with Kafka and Postgres Experience with Rich Client applications Basic knowledge of the energy market in Germany and the Netherlands Degree in Computer Science or a related field Knowledge of requirement engineering Strong communication skills and ability to work independently Fluent English (German is a plus) Technologies you'll work with Java Spring Boot Kotlin Kafka Kubernetes Docker PostgreSQL JavaScript / TypeScript Angular Client – why choose this particular client from the Jit portfolio? Jit Team is cooperating with European energy company with approximately 20 000 employees. For more than 100 years, they have electrified industries, supplied energy to people’s homes and modernized way of living through innovation and cooperation. The purpose is to make fossil-free living possible within one generation . To be able to reach this ambitious goal we are looking for talented individuals who, in addition to their passion for their own role, also have strong team spirit and want to contribute to supporting a meaningful corporate mission. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: B2B role for a Senior Java Developer to build a greenfield Straight-Through Processing (STP) lending platform focused on automated, scalable end-to-end loan processing. The position involves designing and developing a modern backend system with event-driven architecture and multiple integrations. You will influence architectural decisions and technology choices while working in an Agile, international environment. 🗂️ Requirements: 5+ years of experience as Java Developer, Strong experience with Java 21+, Hands-on experience with Spring Boot, Deep knowledge of JPA/Hibernate, Experience designing and building REST APIs, Experience with Kafka and event-driven architecture, Experience with relational databases and database design, Experience with Maven, Experience with Liquibase or similar versioning tools, Understanding of clean architecture and design principles, Experience working in Agile environment, Ability to work in English-speaking team 📃 Skills: Java, Spring, SpringBoot, JPA, Hibernate, Kafka, REST, Maven, Liquibase, SQL, PostgreSQL, Oracle, Git, Cucumber, Copilot, Agile 🏢 Description: Salary: 1000-1400 PLN/day on B2B Work model: elastic hybrid from Gdańsk/ Gdynia (2 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project You will be involved in a financial project focused on building a modern Straight-Through Processing (STP) Lending platform , designed to support end-to-end loan processing in a highly automated and scalable way. The system will play a central role in the lending ecosystem, integrating with multiple internal and external services, ensuring efficient data flow and real-time event processing. As this is a greenfield initiative, you will have a direct impact on architectural decisions, technology choices, and development standards, helping to shape a robust backend platform from the ground up. Responsibilities you'll have Designing and developing scalable backend services using Java and Spring Boot Building and maintaining REST APIs for integration with external and internal systems Implementing event-driven architecture using Kafka Designing and managing persistence layers with JPA and relational databases Managing database schema evolution using Liquibase Collaborating closely with Product Owner and Business SMEs to refine requirements Writing clean, maintainable, and testable code following best engineering practices Leveraging AI-assisted tools (e.g., GitHub Copilot) to improve development efficiency Participating in Agile ceremonies and contributing to continuous improvement Ensuring high code quality through testing, code reviews, and best practices Expected competences and knowledge 5y+ of experience as Java Developer Strong experience in Java ( Java 21+) with solid understanding of backend development Extensive hands-on experience with Spring Boot framework Deep knowledge of JPA/Hibernate and database design principles Experience in building RESTful APIs and integrating distributed systems Understanding of event-driven architectures ( Kafka ) Familiarity with Maven for build and dependency management Experience with Liquibase or similar tools for database versioning Good understanding of clean architecture and software design principles Experience working in Agile environments Strong communication skills and ability to work in an English-speaking team Nice to have: experience with Cucumber for BDD testing Technologies you'll work with Java 21+ Spring Boot JPA / Hibernate Apache Kafka REST APIs Maven Liquibase Relational databases (e.g., PostgreSQL, Oracle) GitHub Copilot (AI-assisted development) Cucumber (optional, for testing) Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: Full-stack role focused on building and maintaining scalable web and mobile applications using React/React Native on the frontend and Java-based backend services within a microservices architecture. The position involves end-to-end feature development, REST API design, and ensuring performance, security, and scalability in a production environment. You will contribute to CI/CD, deployments, and continuous platform improvements in a modern tech stack. 🗂️ Requirements: 6+ years full-stack development experience, Strong experience with React or React Native, Strong command of Java, Experience building REST APIs, Experience with HTTP protocols, Understanding of frontend architecture and state management, Experience with SQL and NoSQL databases (PostgreSQL, MongoDB, Redis), Knowledge of CI/CD pipelines and deployment processes, Experience with microservices architecture 📃 Skills: Java, React, ReactNative, Node.js, REST, HTTP, SQL, PostgreSQL, MongoDB, Redis, Microservices, CI/CD, AWS, Azure, GCP, Docker, Kubernetes 🏢 Description: Salary: 1000-1300 pln/md on B2B Work mode: Elastic hybrid from Gdynia/Gdańsk (1-2 days per week from the office) Why choose this offer? End‑to‑end ownership w ith a modern tech stack Stability combined with continuous growth Autonomy and high‑quality collaboration Project The project focuses on building and maintaining scalable web and mobile applications used by a large and diverse user base. It involves developing modern, user‑friendly interfaces with React or React Native and integrating them with robust backend services built in Java . The system is based on RESTful APIs and microservices architecture, ensuring high performance, security, and scalability. You will work closely with product, design, and QA teams to continuously improve the platform and deliver high‑quality features to production. Responsibilities you'll have Design and develop responsive web and mobile applications using React or React Native Build and maintain backend services and APIs using Java (preferred) or Node.js Develop reusable components, modules, and libraries Design and implement RESTful APIs and microservices Integrate front-end applications with backend systems and third-party services Ensure application performance, scalability, and security Collaborate with cross-functional teams including designers, product managers, and QA Participate in code reviews and maintain code quality standards Support deployment, CI/CD pipelines, and production releases Expected competences and knowledge Over 6 years of experience in full-stack development Good experience with React or React Native Strong command of Java Experience building REST APIs and working with HTTP protocols Understanding of frontend architecture, state management, and component-based design Solid level of SQL / NoSQL (Postgres, Mongo, Redis) Knowledge of CI/CD pipelines and deployment processes Strong problem-solving and analytical skills Good command of AI-powered coding and trust in AI Strong communication and collaboration skills Ability to work independently and within a team Attention to detail and commitment to quality Ability to manage multiple tasks and priorities Adaptability and willingness to learn new technologies Nice to have Experience with microservices architecture Familiarity with cloud platforms (AWS, Azure, or GCP) Experience with containerization (Docker, Kubernetes) Knowledge of testing frameworks and automated testing Experience with mobile app deployment (App Store / Google Play) Technologies you'll work with Java React React Native REST APIs HTTP SQL (PostgreSQL) NoSQL (MongoDB, Redis) Node.js Microservices CI/CD pipelines AWS/Azure/GCP Docker Kubernetes App Store/Google Play AI Client – why choose this particular client from the Jit portfolio? Our client is an international financial services organization operating in the capital markets domain, focused on processing and analyzing large volumes of transactional data. The company develops modern data platforms that support trading, operational efficiency, and regulatory reporting. It operates in a fast-paced, highly regulated environment with a strong emphasis on scalability, data quality, and advanced analytics. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: DevOps Engineer role in an international banking project focused on developing and supporting Data Products. The position involves building and maintaining CI/CD pipelines, automating infrastructure, and supporting Kubernetes-based deployments in an agile environment. You will collaborate with development and QA teams to improve testing, deployment, and delivery processes. 🗂️ Requirements: Strong experience with CI/CD pipelines, especially Jenkins, Experience with Terraform and Ansible, Good Linux administration skills, Scripting skills in Shell and Python, Basic experience with Kubernetes and containerization, Proficiency with Git, Basic programming skills in Python or Groovy, Experience working in agile environments 📃 Skills: Jenkins, JobDSL, Groovy, Terraform, Ansible, Linux, Shell, Python, Kubernetes, Docker, Git, Bitbucket, Scala, Kafka, Airflow, AWS, Hadoop, Spark, SonarQube, PostgreSQL, Tekton 🏢 Description: Salary: 1000 - 1200 PLN/day on B2B Work model: elastic hybrid (1-2 days per week from the office in Warszawa/ Gdańsk/ Gdynia/ Łódź) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings Project You will be involved in a financial project focused on supporting the development of Data Products as a DevOps Engineer within an international banking environment . The role centers on designing and maintaining CI/CD pipelines using Jenkins, as well as building automation solutions with Terraform and Ansible. You will collaborate closely with developers and QA engineers, providing tools, scripts, and support to improve testing, deployment, and delivery processes . Additionally, you will troubleshoot Kubernetes-based deployments and act as a key point of contact for DevOps-related topics across teams. The project follows an agile approach and requires strong communication and collaboration skills. Responsibilities you'll have Develop and maintain CI/CD pipelines using Jenkins (JobDSL, Groovy) Build and manage infrastructure automation with Terraform and Ansible Create and maintain scripts in Shell and Python to support development processes Develop small tools and utilities to improve CI/CD pipelines and support developers and QA engineers Troubleshoot deployment issues in Kubernetes environments Collaborate with internal and external teams as a DevOps point of contact Support and enable developers and testers by promoting DevOps best practices Contribute to knowledge sharing through internal trainings, demos, and presentations Optionally develop container-based microservices and support AI-related solutions in the Data area Expected competences and knowledge Strong experience in CI/CD, particularly with Jenkins or similar automation tools Solid knowledge of infrastructure as code tools, especially Terraform and Ansible Good Linux administration skills and strong scripting abilities (Shell, Python) Basic experience with Kubernetes and containerization concepts Proficiency with Git (preferably Bitbucket) Basic programming skills (Python, Groovy) Understanding of agile methodologies and experience working in distributed teams Strong communication skills and a collaborative mindset Nice to have Experience with Kafka, Airflow, AWS, Hadoop, or Spark Familiarity with SonarQube, PostgreSQL, or Tekton Technologies you'll work with Jenkins (JobDSL, Groovy) for CI/CD pipeline development Terraform and Ansible for infrastructure automation Linux environment with Shell and Python scripting Kubernetes and Docker for containerization Git (Bitbucket) for version control Scala and Python-based application ecosystems Kafka, Airflow, AWS, Hadoop, Spark SonarQube, PostgreSQL, Tekton Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture , which is conducive to people who place emphasis on work-life balance and feedback culture . Furthermore, all projects are executed in international teams, giving constant exposure to the English language. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Junior-level role in a project building a high-performance, scalable messaging platform for financial institutions, focused on message transport, transformation, routing, and monitoring in a critical environment. The position offers hands-on experience with enterprise financial systems and development toward Java backend or DevOps paths. Work is in a hybrid model with on-call support in a time-sensitive setup. 🗂️ Requirements: Basic experience in Java, Interest in DevOps, Good command of English (spoken and written), Availability for on-call support (rotational shifts), Ability to work in time-sensitive environments, Problem-solving skills, Willingness to work on-site 2 days per week 📃 Skills: Java, Spring, SpringBoot, Kubernetes, OpenShift, Docker, ActiveMQ, IBMMQ, Elasticsearch, PostgreSQL, DB2, ArgoCD, GitOps, Incentage 🏢 Description: Salary: 252 - 350 PLN/ day net + vat (B2B/Civil contract) Remote: elastic hybrid from our office in Gdynia/Gdańsk (2 days per week on-site) Why choose this offer? International working environment High level of autonomy and collaboration within the team Scandinavian organizational culture supporting real work-life balance Opportunity to learn how financial products and markets operate Project You’ll join a project focused on building a robust, scalable, high-performance messaging platform for financial institutions. The system handles message transport, data transformation, routing, validation, sequencing, and monitoring. It’s a critical, high-throughput environment where reliability matters and attention to detail makes a real impact. Expected competences and knowledge Junior level with strong learning mindset): Basic experience in Java (commercial or solid personal projects) Interest in DevOps, with an eagerness to learn Good command of spoken and written English Problem-solving mindset and ability to react quickly to issues Responsibility and readiness to work in time-sensitive environments Openness to collaboration and knowledge sharing (tech + business teams) Availability for on-call support (morning/evening shifts on rotation) Nice to have: Spring Boot Kubernetes / OpenShift Docker Messaging systems (Apache ActiveMQ, IBM MQ) Elasticsearch Databases (PostgreSQL, DB2) GitOps (ArgoCD) Experience with low-code platforms (e.g., Incentage IMS) What you gain: Exposure to real-world, large-scale financial systems Fast learning curve in a complex enterprise environment Supportive team that helps you grow (no “figure it out alone” culture) Development path toward Java backend / DevOps / Site Reliability Engineer Technologies you'll work with Spring Boot Kubernetes / OpenShift Docker Messaging systems (Apache ActiveMQ, IBM MQ) Elasticsearch Databases (PostgreSQL, DB2) GitOps (ArgoCD) Low-code platforms (e.g., Incentage IMS) Client – why choose this particular client from the Jit portfolio? Jit Team is proud to partner with one of the leading European financial groups responsible for the registration, ownership records, and financial settlement of securities traded on financial markets in Norway and recently extended to other European markets. Jit Team has been a strategic partner to our client in the area of software development since 2017 . Over the course of the partnership, Jit Team's dedicated team working for our client has grown from three to over 30 people , who have worked on the modernization of legacy applications, the implementation of new systems, and the development of a private cloud-based platform to host a variety of financial systems . About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy.

🏢 Summary: B2B role for an experienced .NET Developer to build and modernize a marketing platform that aggregates customer data and supports targeted campaigns, contests, and promotional activities. The position involves maintaining legacy on-premise systems and contributing to frontend improvements while ensuring performance and scalability. Hybrid work model with one day per week in the office. 🗂️ Requirements: Strong experience with .NET Framework 4.8, Good knowledge of .NET Core, Experience with legacy systems, Experience with on-premise applications, Solid knowledge of HTML, Solid knowledge of CSS, Solid knowledge of Bootstrap, Ability to work independently, Experience with .NET MVC 📃 Skills: .NET, C#, ASP.NET, MVC, .NET, Bootstrap, HTML, CSS, React 🏢 Description: Salary: 500 - 900 PLN/day on B2B Work model: hybrid from Gdańsk / Warsaw / Rzeszów / Kraków (1 day per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis The Jit community will bring you a nice time during regular integration meetings Project The project focuses on the development of a marketing platform that aggregates customer data from multiple brands and uses it to design and execute targeted campaigns. The system enables the creation and management of promotional activities such as contests, lotteries, and customer engagement campaigns. Additionally, the project includes smaller initiatives related to hosting and managing clients’ websites, providing a comprehensive approach to supporting their online presence. Responsibilities you'll have Develop and maintain a marketing platform built on .NET Framework 4.8 and .NET Core Work with and gradually improve legacy systems , including on-premise applicationsImplement and enhance features related to marketing campaigns, contests, and user engagement Collaborate on smaller projects involving website hosting and client site management Contribute to frontend improvements using HTML, CSS, and Bootstrap Take ownership of tasks and deliver solutions independently Identify opportunities for system improvements and modernization Ensure stability, performance, and scalability of the platform Expected competences and knowledge Strong experience with .NET Framework 4.8 (must-have) Good knowledge of .NET Core Experience working with legacy systems and on-premise applications Solid understanding of HTML, CSS, and Bootstrap Ability to work independently and proactively manage tasks Problem-solving mindset and willingness to take on technical challenges Nice to have: Experience with .NET-based CMS Basic or practical knowledge of React Technologies you'll work with .NET MVC/.NET Core Bootstrap React Client – why choose this particular client from the Jit portfolio? DOPE Studio is an independent digital agency that combines the capabilities of a creative agency, a strategic consultancy, and a technology provider. The company focuses on delivering data-driven, optimized, and high-performing digital experiences, helping clients solve complex marketing and business challenges. The agency specializes in areas such as digital marketing strategy, web and e-commerce development, content production, SEO, marketing automation, and customer loyalty solutions. It leverages data, technology, and creativity to design engaging campaigns, personalized user experiences, and innovative digital products. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Senior software engineering role focused on developing high-performance, real-time solutions for power grid automation using modern C++ and cross-platform technologies. The position involves designing scalable and secure systems, optimizing low-latency applications, and contributing to mission-critical energy infrastructure projects in an international agile environment. Hybrid work from Kraków with long-term product development and collaboration across global R&D teams. 🗂️ Requirements: University degree in computer science, engineering, or related field, 8+ years of experience in senior technical roles, Advanced C++17/20 knowledge, Experience with multithreading and synchronization, Experience with asynchronous I/O and real-time systems, Cross-platform development for Windows and Linux, Knowledge of CMake and Visual Studio, Experience with Docker and Kubernetes, Experience with microservices architecture, Performance profiling and optimization experience, Knowledge of software architecture and secure system design, Understanding of unit and integration testing, Knowledge of scalability, performance, and security requirements, Experience with power grid management systems, Knowledge of SCADA, IED, and RTU systems 📃 Skills: C++, C#, .NET, Rust, CMake, VisualStudio, Windows, Linux, Docker, Kubernetes, Microservices, SCADA, IED, RTU, STL, RAII, Agile 🏢 Description: Salary: 1100-1400 pln/md on B2B Remote: hybrid from Kraków (1-2 days per week from the office) Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis The Jit community will bring you a nice time during regular integration meetings Work on cutting-edge technologies supporting the global energy transition Collaborate with international teams and industry experts Project The project is part of the Grid Automation domain, focused on developing innovative solutions for the power systems of the future. The team is responsible for designing and building high-performance, secure, and reliable software applications using modern C++ (C++17/20) , with a strong emphasis on real-time operation, system resilience, and long-term product support. As part of this initiative, engineers develop mission-critical software that supports energy infrastructure worldwide. The solutions are designed to meet demanding requirements for reliability, efficiency, cybersecurity, and continuous operation in real-time environments. The role offers close collaboration with global R&D and technology teams, bringing together specialized expertise and advanced engineering capabilities. Team members have a direct impact on the development of next-generation products that help ensure the stability, safety, and modernization of critical power systems. This is an opportunity to work on complex, cutting-edge technologies while contributing to software that delivers long-term value and supports essential infrastructure on a global scale. Responsibilities you'll have Develop system design in areas like multithreading, synchronization, I/O, and latency requirements for real-time operation Develop high-performance C++ cores to managed runtime services (.NET, RUST) with minimal latency overhead Implement performance optimization and scalability : profile threading behavior, minimizing lock contention, reducing memory allocations in critical paths, and ensure predictable latency at scale Maintain high code quality through code reviews, unit testing, and adherence to SOLID, KISS, DRY and industry best practices Participate in system design, best practices and maintaining code quality in performance-critical sections Participate in technical architecture reviews, design documentation, and roadmaps for feature development, refactoring initiatives, and legacy code modernization, collaborate with engineering, product, and business stakeholders to transform requirements into clear architectural designs Support strategic technology decisions on dependencies, build tooling, dependency management, and secure software supply chain practices, maintain cross-platform support: drive modernization of build systems, ensure consistency across multiple deployment environments, and support Linux/Windows compatibility Practical Linux development and deployment strategies Contribute to achieving business goals by designing, developing, and delivering high-quality software solutions Continuously enhance existing systems and contribute to the creation of new features Work effectively within an agile environment, continually expanding your technical expertise and understanding of the business domain, actively participate in a cross-disciplinary team and contribute to shared objectives Expected competences and knowledge University degree in computer science, engineering, or a related technical field 8+ years of experience in senior technical roles Advanced proficiency in modern C++ (C++17/20) with deep understanding of RAII, smart pointers, STL, concurrency, and memory management Practical knowledge of C# development in plus Strong experience with multithreading, synchronization primitives, asynchronous I/O and real-time system design Proficiency with building systems (CMake, Visual Studio) and cross-platform development for Windows and Linux Experience with containerization technologies (Docker, Kubernetes) and microservices architecture patterns Demonstrated experience with performance profiling, optimization, and low-latency systems Understanding of software architecture principles and secure, scalable system design Excellent problem-solving skills and the ability to tackle complex technical challenges Good understanding of unit and integration testing techniques and testing frameworks Knowledge of non-functional requirements (performance, scalability, security) Practical experience developing systems for power grid management and monitoring Understanding of power grid operations and applicable standards Experience with industrial automation systems (SCADA, IED, RTU) Technologies you'll work with C++ 17/20 RAII, smart pointers, STL C# .NET, RUST CMake, Visual Studio Windows, Linux Docker, Kubernetes Microservices SCADA, IED SOLID, KISS, DRY Agile Client – why choose this particular client from the Jit portfolio? Our Client is an established global technology leader driving the digital transformation and innovation required to accelerate the transition toward a carbon-neutral future . Serving customers across the utility, industry, and infrastructure sectors, they provide cutting-edge solutions and services across the entire energy value chain. The organization is actively evolving the worlds energy systems to make them more sustainable, flexible, and secure, while precisely balancing social, environmental, and economic value. With a proven track record and an unparalleled installed technological base spanning well over 100 countries, the company operates on a massive global scale. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.