DevOps Engineer

🏢 Summary: Long-term B2B opportunity for a senior engineer to deliver production-ready code and shape system architecture in a microservices environment. The role combines hands-on Java and React development with architectural responsibilities in a global, collaborative setup. It focuses on high-frequency delivery and technical excellence within the financial sector. 🗂️ Requirements: Strong Java experience (latest versions), Strong React experience, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Proven high-frequency code delivery, Experience in banking or financial sector 📃 Skills: Java, React, Microservices, REST, PostgreSQL, Banking, Docker, Kubernetes 🏢 Description: Working mode : Hybrid - 6 days per month at the Warsaw office Contract type : B2B, long term cooperation Rate : 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.

🏢 Summary: Long-term B2B hybrid role focused on hands-on Java and React development within a microservices architecture, contributing directly to production code and system design. The position emphasizes high-frequency delivery, REST API development, and collaboration in a global engineering environment. It combines technical leadership with active development in financial-sector projects. 🗂️ Requirements: Strong experience with Java, Strong experience with ReactJS, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Recent experience with modern Java versions, Ability to deliver code changes frequently, Background in banking or financial sector 📃 Skills: Java, ReactJS, Microservices, REST, PostgreSQL, Docker, Kubernetes 🏢 Description: Working mode: Hybrid - 6 days per month at the Kraków office Contract type: B2B, long term cooperation Rate: 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.

🏢 Summary: Fullstack Developer role focused on building and evolving Java-based microservices and modern Angular Single Page Applications within an event-driven architecture. The position emphasizes backend development with Spring Boot, Kafka integration, and secure, scalable solutions, while contributing to CI/CD pipelines and frontend best practices. Work involves close collaboration on solution design, security implementation, and continuous improvement in an Agile environment. 🗂️ Requirements: Strong hands-on experience with Java 17–21, Strong experience with Spring Boot 3.x, Experience with microservices architecture, Experience with Kafka in event-driven or messaging systems, Strong practical experience with SQL and Oracle, Experience or strong understanding of Redis, Experience with Domain Driven Design, Experience with Node.js, Experience with TypeScript, Experience building Single Page Applications with Angular, Strong knowledge of Angular architecture and best practices, Strong understanding of web application security, Practical knowledge of OIDC and OAuth2, Experience with Git, Experience working in Agile methodologies 📃 Skills: Java, Spring, SpringBoot, Microservices, Kafka, SQL, Oracle, Redis, DDD, Node.js, TypeScript, Angular, SPA, Security, OIDC, OAuth2, Git, Agile 🏢 Description: Location: Hybrid work model – 2-3 days per week from the Warsaw office Salary: 160 – 170 PLN net/h (B2B via Experis) Tasks: •    Design, develop, and maintain fullstack applications with a strong emphasis on backend and modern frontend architectures •    Build high-quality, maintainable, secure, scalable, and testable software aligned with business requirements •    Develop and evolve Java-based microservices using Spring Boot •    Contribute to Single Page Applications development ensuring frontend best practices •    Collaborate with business and technical stakeholders to clarify and refine functional and non-functional requirements •    Participate in solution design pre-project studies and technical decision-making •    Integrate systems using event-driven architectures and streaming platforms •    Optimize and maintain existing codebases •    Implement execute and maintain automated tests and CI/CD pipelines •    Ensure application security including identity management and secure authentication flows •    Maintain and update technical documentation •    Participate in internal and external developer communities to share best practices •    Continuously improve skills in modern technologies and software engineering practices Requirements: Backend & Architecture •    Strong hands-on experience with Java 17–21 focusing on modern Java •    Strong experience with Spring Boot 3.x and microservices architectures •    Required experience with Kafka in event-driven or messaging-based systems •    Strong practical experience with SQL using Oracle •    Experience or strong understanding of Redis •    Experience with Domain Driven Design Frontend •    Required experience with Node.js •    Required experience with TypeScript •    Solid experience building Single Page Applications using Angular •    Strong knowledge of Angular best practices architecture and maintainability •    Experience with SPA development •    Webpack knowledge is a nice to have Security •    Strong understanding of web application security •    Practical knowledge of OIDC and OAuth2 protocols •    Experience with identity management platforms as a strong advantage •    Awareness of OWASP principles certifications are a plus DevOps & Tooling •    Required experience with Git •    Experience with CI/CD pipelines GitLab CI and Jenkins as a nice to have •    Maven knowledge as a nice to have •    Docker and Kubernetes knowledge as a nice to have •    Experience with IntelliJ and VS Code •    Knowledge of Jira and Confluence •    Python knowledge as a nice to have •    Practice with AI based code generation tools as a nice to have Methodologies & Ways of Working •    Experience working in Agile methodologies such as Scrum and Kanban •    DevOps mindset and practices •    Ability to collaborate in distributed international teams Offer: •    Multisport card •    Private healthcare •    Access to an e‑learning platform •    Group life insurance

🏢 Summary: Long-term B2B role focused on building, operating, and improving an enterprise-scale Azure cloud platform with strong emphasis on automation, security, and developer experience. The position involves designing CI/CD pipelines, implementing landing zones and policy-as-code, and integrating cloud services with enterprise systems. Work is hybrid (Warsaw office) with occasional business trips and collaboration in an international environment. 🗂️ Requirements: 3+ years of experience with Microsoft Azure including operations, Strong Infrastructure as Code skills, Knowledge of CAF and Enterprise Scale best practices, Understanding of security and compliance standards, Experience with CI/CD pipelines, Experience with DevOps practices, Experience working in Agile methodologies 📃 Skills: Azure, Bicep, Terraform, CI/CD, DevOps, IaC, CAF, Agile, APIs 🏢 Description: Start : Flexible Contract : B2B, long term cooperation Work model : 3 days from the Warsaw office per week Project language: English/Polish Business trips: to Denmark occasionally Recruitment process: case study + 1 meeting You will play a key role in building, operating, and continuously improving our cloud platform and automation capabilities. Your mission is to enable scalable, secure, and compliant cloud adoption through everything-as-code , strong engineering practices, and deep integration between cloud services and existing enterprise systems. A key focus of the role is to continuously improve platform usability and developer experience . We strive to make the platform intuitive, well-documented, and easy to work with – so development teams can focus on delivering business value rather than dealing with complexity. Responsibilities Design, build, and operate the Enterprise Scale Foundation platform and CI/CD pipelines. Improve platform usability, reliability, and developer experience. Implement and manage Landing Zones, guardrails, and policy-as-code. Develop automation using IaC, APIs, and reusable workflows. Build integrations with enterprise systems (e.g., ITSM, identity, data). Ensure security, compliance, and governance standards are met. Collaborate with teams to drive platform improvements and enable self-service. Requirements 3+ years of experience with Microsoft Azure (including operations). Strong Infrastructure as Code (IaC) skills (Bicep, Terraform) Knowledge of CAF / Enterprise Scale best practices. Understanding of security and compliance (preferably financial sector).Experience Experience with CI/CD, DevOps, and Agile methods. Previous experience with Customer Exeprience.

🏢 Summary: B2B role in the banking sector focused on developing and optimizing cloud infrastructure across private, public, and hybrid environments. The position involves building cloud foundations, supporting application migration, automating infrastructure and incident management, and enhancing performance, security, and scalability. Work is conducted in a hybrid model with close collaboration within a Cloud Centre of Excellence. 🗂️ Requirements: Experience building applications or services on large-scale distributed cloud platforms, Experience delivering Infrastructure as Code using Terraform, Proficiency in automation scripting (Python, JavaScript, or Go), Experience with Kubernetes and CI/CD pipelines including security management, Experience with configuration management and deployment tools, Knowledge of networking security, firewalls, and private networks, Experience integrating systems via REST and Open APIs, Understanding of cybersecurity and security mechanisms, Knowledge of DevOps practices in monitoring, logging, and automation, Availability to work hybrid in Warsaw (2–3 days per week in office) 📃 Skills: Terraform, Python, JavaScript, Go, Kubernetes, CI/CD, REST, OpenAPI, DevOps, Networking, Cybersecurity, Monitoring, Logging, Automation 🏢 Description: Information about the project: Industry: banking Rate: up to 180 pln/h net + VAT, B2B Location: Warsaw (hybrid - 2/3 days per week in the office) Summary: This role involves contributing to the development of Client’s cloud infrastructure, enhancing cloud performance, and ensuring seamless collaboration across teams to achieve business goals. Responsibilities: Contribute to the development of technology for Client’s cloud infrastructure, including private, public, and hybrid cloud environments. Help build the cloud foundation at Client and support application uplift to cloud. Monitor and analyze key metrics within the cloud environment to enhance performance and reliability. Develop automated strategies for incident management within the cloud technologies. Collaborate with other teams in Client’s Cloud Centre of Excellence to align solutions with business goals. Analyze technical requirements about cost optimization, scalability, and performance. Key Requirements: Solid experience building applications or services on a large-scale distributed cloud platform. Experience in delivering Infrastructure as Code utilizing tools such as Terraform. Strong knowledge of automation scripting languages (Python/JavaScript/Go). Exposure to Container Platforms (Kubernetes) and CI/CD pipelines including security management. Experience with Configuration Management and Deployment Tools. Experience with networking security, design principles, and services (firewalls, private networks, etc.). Experience with integration of systems/services through REST and OPEN APIs. Understanding of Cyber Security and general security mechanisms. Knowledge of DevOps best practices related to monitoring, logging, and automation. Excellent interpersonal communication skills and experience in multidisciplinary team collaboration. Preferable experience in financial or other regulated industries.

🏢 Summary: The offer is for an AI Web Developer responsible for building and shipping AI-powered tools, automations, and full-stack solutions that directly impact marketing performance. The role focuses on rapid prototyping, integrating LLMs into real workflows, and unifying multiple brands into one technical ecosystem. It requires independent end-to-end product delivery in a fast-changing, low-process environment. 🗂️ Requirements: 2+ years of commercial programming experience, Experience building end-to-end web applications independently, Daily practical use of AI tools in development workflow, Ability to integrate LLMs into production solutions, Strong knowledge of modern web stack (Next.js, server components, backend basics), Experience deploying applications to production environments, Ability to automate workflows and integrate external tools, Experience working directly with non-technical stakeholders 📃 Skills: Next.js, JavaScript, TypeScript, LLM, Claude, GPT, Cursor, Vercel, Supabase, N8N, ElevenLabs, HTML, CSS, API, Git 🏢 Description: Location: Szczecin/Warsaw, remote, with the possibility of coming to the office from time to time Salary: PLN 15 000 - 20 000 net (B2B) About the role: We're looking for a builder, someone who sees a problem, picks up the right tools, and ships a solution before most people finish writing the ticket. You'll work at the intersection of AI, marketing, and frontend to helping us move faster, automate more, and eliminate manual work across multiple projects. As an AI Web Developer, you will: Building AI-powered tools, automations, and experiments that directly impact marketing results Turning ideas into working solutions fast: landing pages, internal tools, growth experiments, brand deployments Working with LLMs daily (Claude, GPT, Cursor, etc.) - prompting, iterating, shipping, not just exploring Unifying multiple brands into one consistent technical ecosystem (tools, flows, deployment pipelines) Eliminating manual work - if something is done by hand today, your job is to automate it tomorrow Integrating AI into real marketing workflows: content production, campaign tooling, partner platforms Biggest challenges in this role: Priorities change fast - often weekly, sometimes daily. There's no long-term backlog to hide behind You'll get business problems, not tickets. Figuring out the solution is part of the job Building fast without overengineering - knowing when "good enough and shipped" beats "perfect and pending" Working across multiple brands at different technical maturity levels Operating close to the CEO and other stakeholders when things move quickly and decisions happen in real time What you'll learn: How to build AI-powered products in a real business context - not demos, not side projects, things that generate leads and save money How to go from idea → shipped solution in days (we built a full partner academy platform in 3 days) How to use LLMs effectively to speed up every layer of your work (code, copy, research, decisions) How to work directly with marketing and make a measurable growth impact How to operate without hand-holding in a low-process, high-trust environment What you'll get to experiment with AI tools in real workflows: Cursor, Claude Code, v0, Stitch, ElevenLabs, and whatever comes out next week Full-stack product building - Vercel, Supabase, Next.js, AI layer on top Building internal tools that replace expensive SaaS platforms Rapid prototyping and killing your own ideas fast when they don't work You are the perfect fit, if you have: 2+ years of hands-on commercial programming experience You've built something for marketing and can explain what metric it was supposed to move and why that metric mattered You've built things end-to-end and can show them - not just contributed to someone else's project You use AI tools daily and have opinions on which ones are good for what (and why) You can go from idea → working product independently, without waiting for a spec Solid understanding of modern web stack - Next.js, server components, basic backend, deploying to production You know when to ask for help and when to just figure it out You can work directly with non-technical people (marketing, CEO) without losing momentum You'll stand out if you: Have your own side projects, experiments, or things you've shipped just to see if they work Have experience with Next.js and understand why you'd use them (not just how) Are comfortable with Vercel + Supabase stack or something comparable Have worked with or explored automation tools like N8N - understanding integrations and data flows is a plus Have experimented with ElevenLabs, AI video/content generation, or similar creative AI tools Can talk about AI tools critically - what works, what doesn't, and what you'd never use again (e.g. "I use Perplexity for research but Claude for content, because...") Have worked in a product company and understand what "business impact" actually means We would like to offer you: Salary up to PLN 20.000 under a B2B contract or an equivalent within the employment contract. Access to all major AI tools - and the freedom to pick the ones that work best. Direct impact on marketing results from day one. A team that ships fast and doesn't overthink process. A role with high influence and independence. Remote-first work with flexible hours. Possibility to use one of our offices in Poland. Great development opportunities – company-supported courses and conferences 26 days off guaranteed in a year Individual work tools —MacBook Pro, Dell screen, JBL headphones? You can tailor the equipment to your needs! Sport & wellness benefit Private medical care Mental well-being program – individual therapy sessions and resources for employees Free access to one of the most popular e-book/audiobook services Regular social events (company-wide offsites, team events) Budget for 1:1 English language classes Diversity Statement One of Tidio’s core values is to play fair. Therefore, we treat all candidates equally. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, or disability status. This means recruitment and selection of talent to Tidio is only based on individual merit and qualifications directly related to professional competence.

🏢 Summary: Remote B2B role focused on building and expanding a large-scale analytical and operational data ecosystem delivering campaign performance insights and investment decision support. The position involves developing high-throughput data pipelines, reporting engines, and attribution systems using a modern cloud-based stack. You will work on production-grade data models and scalable systems supporting millions of users. 🗂️ Requirements: Minimum 3 years commercial experience with Java or Kotlin or Scala, Experience with distributed data pipelines, Experience with data processing and analytics systems, Knowledge of GCP cloud environment, Experience with large-scale data systems, Understanding of microservices architecture, Understanding of event-driven systems, Knowledge of data modeling, Willingness to participate in on-call duties, Availability for monthly visits to Warsaw 📃 Skills: Java, Kotlin, Scala, GCP, BigQuery, PostgreSQL, Airflow, Composer, Spark, Spring, Kafka, Microservices, Avro, Terraform, Analytics, DataModeling 🏢 Description: Salary: 600-960 pln/md on B2B Work mode: Remote (with visits to Warsaw once a month and w illingness to participate in on-call duties) Why choose this offer? Work on a high-impact data ecosystem Exposure to large-scale data processing , advanced analytics, and production-grade data models Modern tech stack (GCP, Spark, Airflow, Kafka, microservices) Project Development and expansion of an advanced analytical and operational ecosystem . The project focuses on delivering precise campaign performance data (Insights & Performance) and building tools that support large-scale investment decision-making. It includes creating reliable reporting systems, data attribution models, and scalable data pipelines, ensuring high-quality data availability for professional users. Expected competences and knowledge At least 3 years of commercial experience with Java / Kotlin / Scala Solid understanding of data processing and analytics systems Experience with distributed data pipelines and orchestration tools Knowledge of GCP cloud environment Experience working with large-scale data systems (e.g. BigQuery, Spark) Familiarity with microservices architecture and event-driven systems Understanding of data modeling and data productionization Nice to have Knowledge of Apache ecosystem, Avro, Terraform Responsibilities you’ll have Designing and developing reporting engines and attribution systems (Insights & Performance) Building and maintaining high-throughput data pipelines Collaborating with Data Science teams to productionize advanced data models Ensuring scalability, reliability, and performance of data systems Developing internal tools (bulk management, agency panels, RBAC systems) Supporting complex account structures and permissions management Willingness to participate in on-call duties Technologies you'll work with Java / Kotlin / Scala GCP (BigQuery) PostgreSQL Apache Airflow / Composer Apache Spark Spring Boot Kafka Microservices architecture Apache, Avro, Terraform 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: The offer is for a DevOps Engineer in a financial project focused on building and maintaining a secure API Management platform within a large banking environment. The role centers on automating infrastructure on AWS, developing CI/CD pipelines, and managing containerized environments to ensure stable and efficient API Gateway operations. You will work with modern DevOps tools to enhance monitoring, logging, and infrastructure as code practices. 🗂️ Requirements: Strong experience with AWS, Experience with Terraform for infrastructure provisioning, Hands-on experience with Docker, Hands-on experience with Kubernetes, Experience building and maintaining CI/CD pipelines, Experience with Ansible, Knowledge of monitoring and observability tools, Understanding of DevOps principles and best practices 📃 Skills: AWS, EKS, Terraform, Ansible, Docker, Kubernetes, CI/CD, Grafana, Prometheus, VictoriaMetrics, Splunk, Kong 🏢 Description: Salary: 1100 - 1450 PLN/day on B2B Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (2/3 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 enabling fast and secure integrations within a large banking environment and with external partners through a new API Management platform. In this role, you will automate infrastructure provisioning (e.g., EKS) using Terraform and build CI/CD pipelines for API deployments and configuration updates. You will also implement monitoring and logging solutions to ensure platform stability and performance. Additionally, you will support the development of an API Catalogue Portal and work with containerized applications in Kubernetes. The position includes maintaining and improving the API Gateway environment with a strong focus on automation and DevOps best practices. Responsibilities you'll have Automating infrastructure provisioning (e.g., EKS clusters) using Terraform and supporting infrastructure-as-code best practices Building, maintaining, and optimizing CI/CD pipelines for API deployments and configuration changes Managing and improving containerized environments based on Docker and Kubernetes Implementing and enhancing monitoring and logging solutions (e.g., Grafana, Prometheus/Victoria Metrics, Splunk) Supporting the development and operation of the API Gateway platform, including automation and performance improvements Contributing to infrastructure migration activities and continuous improvement of DevOps processes Assisting in the setup and maintenance of the API Catalogue Portal, including deployment pipelines and environment configuration Expected competences and knowledge Strong experience with AWS and infrastructure provisioning using Terraform Hands-on expertise in Docker and Kubernetes, including managing containerized environments Solid understanding of CI/CD pipelines and automation tools Experience with configuration management tools such as Ansible Knowledge of monitoring and observability tools (e.g., Grafana, Prometheus/Victoria Metrics, Splunk) Good understanding of DevOps principles and best practices Nice to have: familiarity with API gateway solutions such as Kong Gateway or similar Technologies you'll work with AWS (including EKS and cloud-native services) Terraform, Ansible Docker, Kubernetes CI/CD tools and pipelines Grafana, Prometheus / Victoria Metrics, Splunk API Gateway solutions (e.g., Kong Gateway or similar) 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: 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: Software Engineer role in a long-term international project, working in a cross-functional team responsible for full product lifecycle from design to production support. The position involves backend and frontend development using modern technologies in an iterative delivery model. Hybrid work model with 5 days per month in the office. 🗂️ Requirements: Minimum 5 years of commercial software development experience, Experience with at least one programming language: Kotlin, Python, or JavaScript, Willingness to work across backend and frontend technologies, Working knowledge of Unix/Linux environments, Understanding of databases: MongoDB, Redis, PostgreSQL, Experience with HTTP APIs and RESTful services, Ability to provide production support and troubleshoot performance and security issues, Good English communication skills 📃 Skills: Kotlin, Python, JavaScript, Unix, Linux, MongoDB, Redis, PostgreSQL, REST, HTTP, .NET, C# 🏢 Description: Software Engineer (Kotlin / Python / JavaScript) Location: Kraków or Warsaw (hybrid — 5 days per month in the office) Contract type: B2B — 130–140 PLN/h Project: Long-term international project About the Role We are looking for a Software Engineer to join a collaborative product team working in an iterative delivery model. The team is responsible for the full lifecycle of the product — from design and development to production support — following the principle: “you build it, you support it.” This role offers an opportunity to work with modern technologies across backend and frontend, while continuously learning new programming languages and tools. Key Responsibilities Work in a cross-functional team of 4–6 engineers Break down requirements into user stories and deliver iteratively to production Design technical solutions aligned with architectural guidelines Provide production support, including troubleshooting bugs, performance, and security issues Identify and manage technical debt alongside new feature development Collaborate closely with team members, including pair programming Ensure high quality and maintainability of delivered solutions Requirements Minimum 5 years of relevant commercial experience Experience with at least one programming language (Kotlin, Python, or JavaScript preferred) Willingness to learn multiple technologies across backend and frontend Working knowledge of Unix/Linux environments Understanding of databases from a usage perspective (MongoDB, Redis, PostgreSQL) Experience with HTTP APIs (RESTful services) Good English communication skills (team communication in English) Nice to Have Knowledge of .NET / C# What We Offer Hybrid work model — only 5 days per month from the office (Kraków or Warsaw) Private medical care (Medicover) Sports card (Multisport or equivalent) Life insurance Long-term, stable cooperation Opportunity to work with modern technologies in an international environment Support for professional development and learning