Fullstack Developer

🏢 Summary: Senior .NET Developer role focused on building scalable, cloud-native platforms for intelligent heating and energy management systems in the smart building industry. The position involves developing event-driven services, cloud infrastructure, and user-facing applications supporting distributed energy devices. The project centers on sustainable, efficient heating and cooling solutions. 🗂️ Requirements: Minimum 5 years experience with C# and .NET, Experience with Azure cloud ecosystem, Experience with MongoDB, Experience with event-driven architecture, English proficiency at B2 level or higher, Ability to work independently and in cross-functional team 📃 Skills: C#, .NET, Azure, MongoDB, PostgreSQL, Kafka, Kubernetes, React, TypeScript, Python, Microservices 🏢 Description: Salary: 1000 - 1500 PLN/MD + VAT Remote: flexible hybrid from Gdynia / Kraków / Warszawa / Rzeszów Why choose this offer? You will have the opportunity to develop and improve a software tool which helps provide customers all over the world with tailor-made heating and cooling solutions Your work will help create more sustainable, cost-efficient and environment friendly heating and cooling solutions The Jit community will bring you a nice time during regular integration meetings Project We are looking for experienced Senior .Net Developer who will be part of a team developing modern software solutions for the energy and smart building industry, focused on intelligent heating and hot water management systems. The project involves building scalable cloud-native platforms that support monitoring, optimization, and automation of distributed energy devices used in residential and commercial environments. You’ll work closely with backend, frontend, and platform engineers to design and develop event-driven services, cloud infrastructure, and user-facing applications. Expected competences and knowledge Strong experience with C# / .NET - min. 5 years of experience Knowledge of Azure cloud ecosystem Experience with MongoDB Experience with event-driven architecture English proficiency at a minimum B2 level Ability to work independently and as part of a cross-functional engineering team Nice to have : Experience with Kafka Experience with Kubernetes Familiarity with React / TypeScript Familiarity with PostgreSQL Experience with migration and platform transformation projects Technologies you'll work with C# / .NET Azure Cloud React, TypeScript MongoDB, PostgreSQL Kafka Python Kubernetes Event-driven microservices architecture Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions . Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader , employing more than 27,000 employees and serving customers in more than 100 countries . They are still privately held by the founding family. 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 .NET Developer role focused on building cloud-native, data-intensive platforms for intelligent heating and energy management systems. The position involves developing scalable event-driven services, real-time analytics solutions, and distributed systems in a modern cloud environment. You will collaborate with cross-functional teams to design and deliver robust backend and cloud infrastructure components. 🗂️ Requirements: Minimum 5 years commercial experience with C# and .NET, Hands-on experience with Kubernetes, Basic knowledge of Azure cloud, Strong practical experience with PostgreSQL, Experience with event-driven architecture, Experience with asynchronous messaging systems, English proficiency at B2 level or higher, Ability to work independently and in cross-functional teams 📃 Skills: C#, .NET, Kubernetes, Azure, PostgreSQL, Kafka, Python, React, TypeScript, Iceberg, GreptimeDB, SpiceDB 🏢 Description: Salary: 1000 - 1500 PLN/MD + VAT Remote: flexible hybrid from Gdynia / Kraków / Warszawa / Rzeszów Why choose this offer? You will have the opportunity to develop and improve a software tool which helps provide customers all over the world with tailor-made heating and cooling solutions Your work will help create more sustainable, cost-efficient and environment friendly heating and cooling solutions The Jit community will bring you a nice time during regular integration meetings Project We are looking for experienced Senior .Net Developer who will be part of a team developing modern software solutions for the energy and smart building industry, focused on intelligent heating and hot water management systems. You will join a team building modern data-intensive and cloud-native software platforms focused on scalable analytics, distributed event processing, and real-time operational insights. You’ll work closely with backend, frontend, and platform engineers to design and develop event-driven services, cloud infrastructure, and user-facing applications. Expected competences and knowledge Strong experience with C# / .NET – min. 5 years of commercial experience Hands-on experience with Kubernetes and basic Azure cloud knowledge Experience with Python Strong practical experience with PostgreSQL Experience with event-driven architecture and asynchronous messaging systems English proficiency at a minimum B2 level Ability to work independently and as part of a cross-functional engineering team Nice to have : Experience with migration and platform transformation projects React / TypeScript skills Python skills focused on data engineering, analytics, ETL, and data processing Hands-on experience with Kafka Experience with modern data platform ecosystems Experience designing and developing cloud-native architectures Technologies you'll work with C# / .NET Python Apache Kafka Apache Iceberg PostgreSQL GreptimeDB / Time-series databases React, TypeScript Kubernetes Azure Cloud SpiceDB / ReBAC Event-driven microservices architecture Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions . Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader , employing more than 27,000 employees and serving customers in more than 100 countries . They are still privately held by the founding family. 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 .NET Developer role focused on building scalable, cloud-native platforms for intelligent heating and energy management systems in the smart building industry. The position involves developing event-driven services, cloud infrastructure, and user-facing applications within a distributed energy environment. Fully remote or hybrid work with competitive daily rate. 🗂️ Requirements: Minimum 5 years experience with C# and .NET, Strong knowledge of Azure cloud ecosystem, Experience with MongoDB, Experience with event-driven architecture and NATS, Familiarity with React and TypeScript, Experience with ReBAC and SpiceDB, Familiarity with PostgreSQL and EF Core, English proficiency at B2 level or higher, Understanding of optimization and data workloads in Python, Ability to work independently and in cross-functional teams 📃 Skills: C#, .NET, Azure, MongoDB, NATS, React, TypeScript, SpiceDB, ReBAC, PostgreSQL, EFCore, Python, Kafka, Kubernetes 🏢 Description: Salary: 1000 - 1280 PLN/MD + VAT Remote: flexible hybrid from Gdynia / Kraków / Warszawa / Rzeszów Why choose this offer? You will have the opportunity to develop and improve a software tool which helps provide customers all over the world with tailor-made heating and cooling solutions Your work will help create more sustainable, cost-efficient and environment friendly heating and cooling solutions The Jit community will bring you a nice time during regular integration meetings Project We are looking for experienced Senior .Net Developer who will be part of a team developing modern software solutions for the energy and smart building industry, focused on intelligent heating and hot water management systems. The project involves building scalable cloud-native platforms that support monitoring, optimization, and automation of distributed energy devices used in residential and commercial environments. You’ll work closely with backend, frontend, and platform engineers to design and develop event-driven services, cloud infrastructure, and user-facing applications. Expected competences and knowledge Strong experience with C# / .NET - min. 5 years of experience Deep knowledge of Azure cloud ecosystem Experience with MongoDB Experience with event-driven architecture and NATS Familiarity with React / TypeScript Experience with ReBAC / SpiceDB Familiarity with PostgreSQL / EF Core English proficiency at a minimum B2 level Understanding of optimization and data-related workloads in Python Ability to work independently and as part of a cross-functional engineering team Nice to have : Experience with Kafka Experience with Kubernetes Technologies you'll work with C# / .NET Azure Cloud React, TypeScript MongoDB, PostgreSQL Kafka Python Kubernetes Event-driven microservices architecture Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions . Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader , employing more than 27,000 employees and serving customers in more than 100 countries . They are still privately held by the founding family. 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 .NET Developer role in a data-intensive, cloud-native project for intelligent heating and energy management systems. The position focuses on building scalable analytics platforms, event-driven services, and real-time data processing solutions in a distributed environment. Fully remote or hybrid work with modern technologies in the energy and smart building domain. 🗂️ Requirements: Minimum 5 years commercial experience with C# and .NET, Strong Python skills in data engineering, ETL, and analytics, Experience with Apache Iceberg and modern data platforms, Hands-on experience with Kubernetes, Basic knowledge of Azure Cloud, Strong practical experience with PostgreSQL, Hands-on experience with Kafka, Experience with event-driven architecture and asynchronous messaging systems, Experience with time-series databases, Experience with React and TypeScript, Knowledge of advanced authorization systems such as ReBAC or SpiceDB, English proficiency at B2 level or higher 📃 Skills: C#, .NET, Python, Kafka, Iceberg, PostgreSQL, GreptimeDB, Kubernetes, Azure, React, TypeScript, SpiceDB, ReBAC, NATS 🏢 Description: Salary: 1000 - 1280 PLN/MD + VAT Remote: flexible hybrid from Gdynia / Kraków / Warszawa / Rzeszów Why choose this offer? You will have the opportunity to develop and improve a software tool which helps provide customers all over the world with tailor-made heating and cooling solutions Your work will help create more sustainable, cost-efficient and environment friendly heating and cooling solutions The Jit community will bring you a nice time during regular integration meetings Project We are looking for experienced Senior .Net Developer who will be part of a team developing modern software solutions for the energy and smart building industry, focused on intelligent heating and hot water management systems. You will join a team building modern data-intensive and cloud-native software platforms focused on scalable analytics, distributed event processing, and real-time operational insights. You’ll work closely with backend, frontend, and platform engineers to design and develop event-driven services, cloud infrastructure, and user-facing applications. Expected competences and knowledge Strong experience with C# / .NET – min. 5 years of commercial experience Strong Python skills focused on data engineering, analytics, ETL, and data processing Experience with Apache Iceberg and modern data platform ecosystems Hands-on experience with Kubernetes and basic Azure cloud knowledge Strong practical experience with PostgreSQL Hands-on experience with Kafka Experience with event-driven architecture and asynchronous messaging systems (Kafka / NATS during transition period) Experience with GreptimeDB or other time-series databases React / TypeScript skills Experience with ReBAC / SpiceDB or advanced authorization systems English proficiency at a minimum B2 level Ability to work independently and as part of a cross-functional engineering team Nice to have : Experience with migration and platform transformation projects Experience designing and developing cloud-native architectures Technologies you'll work with C# / .NET Python Apache Kafka Apache Iceberg PostgreSQL GreptimeDB / Time-series databases React, TypeScript Kubernetes Azure Cloud SpiceDB / ReBAC Event-driven microservices architecture Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions . Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader , employing more than 27,000 employees and serving customers in more than 100 countries . They are still privately held by the founding family. 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: Senior .NET Developer role focused on designing and maintaining scalable backend services and microservice-based solutions for a European energy trading platform. The position involves building high-performance APIs, integrating messaging systems, and contributing to CI/CD automation in a hybrid work model. The offer includes collaboration with experienced specialists and work with modern technologies. 🗂️ Requirements: 10+ years experience with C# and .NET, Strong experience with SQL databases, Experience with microservices architecture, Experience with messaging systems (RabbitMQ or Kafka), Experience with CI/CD tools (GitHub, GitHub Actions, Octopus Deploy or similar), Ability to design and maintain backend services and APIs, Experience in performance optimization and troubleshooting 📃 Skills: C#, .NET, SQL, RabbitMQ, Kafka, GitHub, GitHubActions, OctopusDeploy, Azure, Angular, Kubernetes, Orleans, CI/CD, Microservices 🏢 Description: Salary: 1000 - 1300 PLN/MD on B2B Work model: elastic hybrid from Gdańsk / Warsaw / Kraków / Rzeszów (1 day from the office a week) Why choose this offer? Working for a leading European energy exchange Collaboration with a team of specialists to create innovative solutions using the latest technologies You can expect a flexible work organization The Jit community will bring you a nice time during regular integration meetings Project We're seeking a Senior .NET Developer who will join our client. Responsibilities you'll have Design, develop, and maintain backend services and APIs using C# and .NET Build and enhance scalable microservice-based solutions Develop and optimize SQL database integrations and data processing workflows Implement and maintain messaging solutions using RabbitMQ, Kafka, or similar technologies Contribute to CI/CD pipelines and deployment automation Collaborate with cross-functional teams to deliver high-quality software solutions Participate in code reviews , architecture discussions, and technical decision-making Monitor, troubleshoot, and improve application performance , scalability, and reliability Expected competences and knowledge Experienced C# .NET developer (ideally 10+ yrs), with experience of SQL databases Experience with microservices and messaging infra (RabbitMQ & Kafka or similar) Experience in CI/CD tools such as GitHub, GitHub Actions, Octopus Deploy or similar What we consider a plus Fintech experience Frontend experience (Angular or similar) Experience using Microsoft Azure platform and infrastructure services Some prior experience or knowledge about containerization and container orchestration (Kubernetes) Experience of implementing high-load and scalable applications using the Actor Model (Orleans) Technologies you'll work with C# .NET SQL Azure Messaging solutions CI/CD tools Angular Kubernetes Client – why choose this particular client from the Jit portfolio? Our client is the leading European power market company which delivers efficient, simple, and secure trading across Europe . In 2023 they celebrate 30 years of powering the market. The company offers day-ahead and intraday trading, clearing and settlement, and additional services to customers, regardless of size or location. Currently, 360 traders from 20 countries operate on their markets. The company provides services on markets in the Nordic and Baltic regions, Germany, Poland, France, the Netherlands, Belgium, Austria, Luxembourg, and the UK. Our client is a Nominated Electricity Market Operator (NEMO) in 15 European countries, while also servicing power markets in Bulgaria, Croatia, and Georgia . In 2021 they had a total traded power turnover of 963 TWh. Our client has three decades of power market experience built on offering flexibility, transparency, innovation, greater choice, and opportunities on the electricity market. 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: This role focuses on building and maintaining Azure-based Kubernetes infrastructure for a global SaaS platform delivering real-time analytics in the maritime and energy sectors. You will develop and operate AKS clusters, implement GitOps and Infrastructure as Code practices, and enhance an Internal Developer Platform to support scalable, secure, and highly available containerized workloads. The position offers fully remote work and engagement with cutting-edge cloud and observability technologies. 🗂️ Requirements: Strong experience with Kubernetes administration in production (AKS, RBAC, networking, troubleshooting), Solid expertise in Azure Cloud services (AKS, Azure Container Apps, Azure Container Registry), Hands-on experience with Terraform and Terragrunt in production environments, Practical experience with GitOps tools (ArgoCD or Flux), Strong knowledge of containerization and Docker, Experience building and maintaining CI/CD pipelines (GitHub Actions or similar), Hands-on experience with Prometheus, Grafana, Alertmanager, Working knowledge of Ansible (playbooks, roles), Proficiency in Bash and Python scripting 📃 Skills: Kubernetes, AKS, Azure, Terraform, Terragrunt, ArgoCD, Flux, Docker, containerd, GitHub, Prometheus, Grafana, Alertmanager, Ansible, Bash, Python, Helm, Kustomize, Backstage, Kyverno, Loki, Tempo, FluentBit, Thanos 🏢 Description: Salary: 1350 - 1500 PLN net/day (B2B contract) Remote: Fully remote or hybrid from Warszawa / Gdańsk / Kraków / Rzeszów (flexible arrangement) Why choose this offer? Work on critical infrastructure powering safety and compliance solutions used globally in maritime, energy, and industrial sectors Join a Scandinavian organizational culture that values work-life balance, transparency, and employee wellbeing Access to cutting-edge cloud technologies - Azure, Kubernetes, GitOps, and modern observability stack Professional development - training, certifications (CKA, Azure), and conferences financed by the company International environment - collaborate with engineers across 100+ countries on industry-defining projects Flexible work organization - we adapt to your schedule and support remote work arrangements Project You will join a global cloud infrastructure team working on an industry-leading platform built on Microsoft Azure that serves maritime and energy sectors worldwide. This platform handles massive amounts of critical data from vessels, offshore installations, pipelines, and industrial assets, providing real-time analytics and insights that directly impact safety, compliance, and operational efficiency . Your role will focus on building and maintaining Azure Kubernetes Service (AKS) clusters that power enterprise SaaS solutions, developing Internal Developer Platform capabilities using Backstage to enable self-service for development teams, implementing Platform Engineering practices to improve developer experience and accelerate delivery, and ensuring high availability, security, and performance of containerized workloads serving millions of users globally. Expected competences and knowledge Strong Kubernetes experience - hands-on administration of production AKS clusters (provisioning, RBAC, networking, troubleshooting) Azure Cloud expertise - solid understanding of AKS, Azure Container Apps, Azure Container Registry , and core Azure services Infrastructure as Code - proven experience with Terraform and Terragrunt in production environments GitOps proficiency - practical experience with ArgoCD or Flux for continuous deployment Containerization - deep knowledge of Docker, containerd , Dockerfiles, and container best practices CI/CD - experience building and maintaining pipelines with GitHub Actions or similar tools Observability stack - hands-on experience with Prometheus, Grafana, Alertmanager Configuration Management - working knowledge of Ansible (playbooks, roles) Scripting skills - proficiency in Bash and Python for automation Platform Engineering experience (nice to have) - familiarity with Backstage and self-service platform concepts Advanced Kubernetes (nice to have) - knowledge of Operators, CRDs, Admission Webhooks Extended observability (nice to have) - experience with Loki, Tempo, Fluent Bit, Thanos Policy enforcement (nice to have) - practical experience with Kyverno or similar tools Technologies you'll work with Kubernetes - AKS, Deployments, StatefulSets, DaemonSets, Jobs, Services, Ingress, NetworkPolicies, Helm, Kustomize, Operators, CRDs Containerization - Docker, Podman, containerd, Azure Container Registry, Azure Container Apps Infrastructure as Code - Terraform, Terragrunt Configuration Management - Ansible GitOps & CI/CD - ArgoCD, Flux, GitHub Actions, Argo Workflows Observability - Prometheus, Thanos, Grafana, Alertmanager, Loki, Tempo, Fluent Bit Platform Engineering - Backstage (Internal Developer Platform) Security & Policy - Kyverno, Azure Security Center, Azure Key Vault Scripting - Bash, Python Azure Cloud - AKS, Container Apps, Virtual Networks, Load Balancers, Azure Monitor, Log Analytics Client – why choose this particular client from the Jit portfolio? Our Client has been in the business of providing safety and insurance for the maritime industry for over 160 years and is now the leading provider of security certification and audits . They offer a wide range of digital projects to increase safety and compliance with standards in industrial fields . Our Client's solutions are used in the maritime industry , from raw materials extraction , to anywhere else where there is a need for quality and compliance with norms and standards . We have been working with our Client since 2013 , creating and maintaining applications that are utilized in high- risk areas like rigs , mines , and police units , striving to make the world a safer place. Our Client's commitment to safety , ecology , and quality , which has its roots in Scandinavian culture , is implemented on a 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.

🏢 Summary: Frontend Architect role in a financial project focused on building secure, high-performance, interactive web applications supporting complex workflows and real-time data. The position involves shaping frontend architecture, developing Web Components, and ensuring code quality and performance across large-scale systems. Hybrid work model with strong emphasis on technical excellence and collaboration in international teams. 🗂️ Requirements: Strong expertise in HTML, CSS, JavaScript, TypeScript, Experience with Web Components and Lit, Solid understanding of Node.js and npm ecosystem, Experience writing unit tests with Vitest, Strong knowledge of frontend architecture and design patterns, Experience with performance optimization and Core Web Vitals, Ability to integrate REST and GraphQL APIs, Experience in large-scale, modular frontend codebases 📃 Skills: TypeScript, JavaScript, HTML5, CSS3, Sass, WebComponents, Lit, Node.js, npm, Vitest, Playwright, REST, GraphQL, CI/CD, GitHubActions, GitLabCI, Kafka, MQ, NinjaFork 🏢 Description: Salary: 900-1200 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 building secure, high‑performance, and highly interactive web applications that support complex business workflows, real‑time data processing, and seamless user experiences. You’ll play a key role in shaping the frontend architecture, ensuring code quality, and driving technical excellence across the team. Responsibilities you'll have Architect and implement complex, interactive user interfaces and single‑page applications using TypeScript and JavaScript Define and maintain best practices for frontend architecture, state management, and component reusability Develop and maintain Web Components using Lit, ensuring modularity and long‑term maintainability Optimize application performance, improve Core Web Vitals, and ensure smooth experiences across devices and browsers Collaborate closely with backend engineers, UX/UI designers, and product managers to deliver end‑to‑end product features Integrate with REST and GraphQL APIs, ensuring reliability, security, and consistency of data flows. Conduct performance audits, code reviews, and mentor other developers Contribute to CI/CD pipelines and deployment workflows (nice‑to‑have) Participate in system design discussions and influence technical decisions across the product Expected competences and knowledge Strong expertise in HTML, CSS, JavaScript, TypeScript Experience with Web Components and Lit Solid understanding of Node.js and npm ecosystem Experience writing unit tests with Vitest Strong knowledge of frontend architecture, design patterns, and performance optimization Ability to work with REST/GraphQL APIs Experience in large‑scale, modular frontend codebases Strong communication skills and ability to collaborate in cross‑functional teams Technologies you'll work with TypeScript, JavaScript Web Components, Lit HTML5, CSS3, Sass Node.js, npm Vitest, Playwright (optional) REST, GraphQL CI/CD tools (GitHub Actions, GitLab CI, or similar) Kafka, MQ systems (nice‑to‑have) NinjaFork (nice‑to‑have) 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: 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: B2B contract role for a Front-End Developer in a financial project focused on building and maintaining modern Angular applications consuming REST APIs. The position involves developing user-friendly solutions, integrating with data processing systems, and collaborating within an international team. Hybrid work model with strong emphasis on code quality and application optimization. 🗂️ Requirements: Experience with Angular Framework, Strong knowledge of TypeScript, Strong knowledge of JavaScript, Experience working with REST APIs, Expertise in Hadoop, Expertise in MapReduce, Ability to analyze and debug applications, Experience in data processing, Ability to optimize and reuse existing code, Experience working in software development teams 📃 Skills: Angular, TypeScript, JavaScript, REST, Hadoop, MapReduce 🏢 Description: Salary: 600-900 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 developing and maintaining modern front-end applications that consume REST APIs, supporting business processes and delivering user-friendly solutions for financial stakeholders. Responsibilities you'll have Designing, creating and maintaining front-end applications to consume REST APIs Writing code in accordance with application requirements Working as a member of a software development team to ensure high-quality standards Explaining complex technical topics in a clear, simple way for non-technical audiences Debugging and troubleshooting applications Making suggestions for enhancements to application procedures and infrastructure Collaborating effectively across teams and contributing to a positive work environment Building strong relationships and maintaining trust with team members and business stakeholders Expected competences and knowledge Experience with Angular Framework Strong TypeScript and JavaScript knowledge Expertise in Hadoop and MapReduce Strong communication skills Team player mindset with proven collaboration skills Ability to analyze and debug applications effectively Experience in working with REST APIs and data processing Capability to reuse and optimize existing code Proactive approach to improving processes and solutions Technologies you'll work with Angular Framework TypeScript JavaScript REST API Hadoop MapReduce 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.