Software Engineer (DaaS)

🏢 Summary: Mid-to-senior Software Engineer role focused on designing and building cloud-based tools for automated aeronautical data processing and delivery in a SaaS/DaaS model. The position involves developing ETL pipelines, backend services, and scalable microservices within AWS, supporting mission-critical aviation systems. You will work on reliable, production-ready integrated data solutions in a global technology environment. 🗂️ Requirements: Experience writing custom ETL pipelines, Experience designing and operating services in AWS, Strong experience with PostgreSQL and PostGIS, Extensive experience in Java development, Experience with microservices architecture, Proficiency in CI/CD pipeline maintenance, Experience with application monitoring and production debugging, Experience with relational and spatial database optimization 📃 Skills: Java, Python, SpringBoot, FastAPI, Angular, PostgreSQL, PostGIS, JDBC, psycopg2, AWS, EKS, Terraform, GitHub, GitHubActions, CI/CD, Jest, Playwright, Groovy, Spock, PyTest, ETL, Microservices 🏢 Description: Our Client is looking for a Software Engineers to join it's Integrated Data Solutions team in Gdańsk. In this role, you will design and build cloud-based tools that transform the way aeronautical data products are created, with a strong focus on automation and reliability. You will work on mission‑critical data production and delivery systems as part of a global technology organization developing advanced, data‑driven solutions for the aviation industry. We are seeking a mid‑to‑senior engineers who are both independent and collaborative, curious about new technologies yet pragmatic in execution, and motivated to drive complex projects to completion. This position centers on developing and scaling integrated data solutions delivered in a modern subscription model (SaaS/DaaS), offering the opportunity to shape the future of digital aviation. The company is a global aviation software leader delivering advanced digital tools that support flight operations across commercial, business, military and general aviation. It combines deep aeronautical data expertise with modern flight‑planning technology to create integrated platforms used by pilots, airlines and fleet operators worldwide. Since becoming an independent company in 2025, backed by a leading software investment firm, it has been able to focus fully on software innovation and accelerate the development of its aviation technologies. Its flagship solutions offer premium, geo‑referenced global aviation charts and navigation data directly within a modern flight‑planning application. The company’s mission is to advance digital aviation by providing integrated software that improves safety, efficiency and decision‑making across the entire flight lifecycle. It is building a connected platform that links the cockpit with operations centers, enabling crews and operators to plan, execute and analyze flights more effectively. The organization is looking for supportive team players with a can-do attitude, strong communication skills and a willingness to help and take ownership. Passion or experience in aviation is a strong advantage, together with curiosity and eagerness to learn a complex technical domain. You will work with following technologies: Requirements: JAMA Source Code: Github Database: Postgres, PostGIS Development language/frameworks: Agular, Python, Java, Spring Boot Testing: Jest, Playwright, Groovy/Spock, PyTest Cloud: AWS Cloud Infrastructure: GitHub Actions, GitHub Security Suite, GitHub Registry, EKS, Terraform Python API: FastAPI Key responsibilities Design and develop cloud-based tools that automate creation and processing of aeronautical data products. Build and maintain ETL pipelines and relational/spatial databases (PostgreSQL, PostGIS). Implement and improve backend services in Java (and related technologies) following best engineering practices. Deploy, monitor and troubleshoot services in AWS using automated CI/CD pipelines. Collaborate with a global team to deliver reliable, production-ready solutions for the aviation domain. Ideal candidate profile ETL: experience writing custom ETL pipelines AWS : Experience designing, deploying and operating services within Amazon Web Services Databases: Experience working with and optimizing relational and spatial databases (e.g., PostgreSQL, PostGIS, psycopg2 + JDBC) Java: Extensive, current experience writing high-quality Java code Microservices architecture DevOps CI/CD : Proficient working in and maintaining an automated CI/CD pipeline Application Monitoring & Debugging: Experience with monitoring tools and expert skills in debugging and troubleshooting production applications Nice to have: aviation interest; experience in aviation standards Conditions Location: Gdańsk Przymorze Work Model: hybrid, at least 2 days per week in the office Employment Type: B2B contract via KUBO Salary: up to 190 PLN/h Benefits: life insurance, private healthcare, Multisport card, growth supprt (co-funding of cloud certification exams) Recruitment steps Initial call with a KUBO recruiter Interview(s) with the client Decision, feedback and support through offer and onboarding At KUBO, we genuinely care about people. We welcome candidates of all ages, backgrounds, identities, family constellations, health situations, and ways of thinking and interacting with the world. You’re welcome to be yourself — we value authenticity, and we’re committed to creating a fair and inclusive process for everyone.

🏢 Summary: The offer is for a Software Engineer to modernize and develop cloud-hosted backend services for a mission-critical aviation platform used globally. The role focuses on building scalable, resilient, cloud-native solutions in AWS, improving automation, CI/CD, and Kubernetes-based environments. You will contribute to transforming a legacy system into a modern, secure, and highly scalable ecosystem. 🗂️ Requirements: Experience developing backend applications in cloud environments, Hands-on experience with Linux, Docker, Apache, PHP, Strong knowledge of AWS and cloud-native architectures, Experience with Kubernetes and containerized workloads, Experience with CI/CD and Infrastructure as Code, Knowledge of cloud security and monitoring practices, Ability to troubleshoot production systems, English B2 level or higher 📃 Skills: AWS, Linux, Docker, Apache, PHP, Kubernetes, CI/CD, IaC, SQL, MySQL, SQLServer, AI 🏢 Description: We are looking for a Software Engineer to join a team responsible for modernizing a mission-critical aviation platform used by tens of thousands of customers worldwide. You will help design, build, and evolve cloud-hosted backend services that support the distribution of aviation data across desktop, mobile, and aircraft-connected workflows. This is a unique opportunity to work on a high-impact product while contributing to a large-scale modernization initiative focused on cloud-native architecture, automation, scalability, security, and operational excellence. Working closely with cross-functional teams, you will help transform a well-established platform into a modern, resilient, and highly scalable ecosystem capable of supporting future growth and new product offerings. Key responsibilities Develop and modernize backend services hosted in AWS Design and implement scalable, resilient cloud-native solutions Build and improve APIs, integrations, and automated backend processes Enhance CI/CD pipelines, infrastructure automation, monitoring, and observability Manage and troubleshoot Kubernetes-based environments and containerized applications Support production systems and drive reliability, security, and operational improvements Collaborate with product, mobile, desktop, QA, and DevOps teams to deliver high-quality solutions Leverage AI-assisted development tools to improve engineering efficiency while maintaining high standards of quality and security Ideal candidate profile Experience developing backend applications in cloud environments Hands-on experience with Linux, Docker, Apache, and PHP or Java Strong knowledge of AWS and cloud-native architectures Experience with Kubernetes and containerized workloads Experience with CI/CD, Infrastructure as Code, and automation Understanding of cloud security, monitoring, and production support practices Strong troubleshooting and problem-solving skills Ability to work independently and collaborate within distributed teams English min. B2. Nice to Have: Experience modernizing legacy applications and services Experience with SQL Server and MySQL Experience building highly available and resilient production systems Experience using AI-assisted software development tools Conditions Employment type: B2B or UoP Location: Gdańsk Work model: 1 day a week in the office in Gdańsk or less frequently, depending on your availability Salary: up to 190 PLN net/h Benefits: life insurance, private healthcare, Multisport card Recruitment steps Recruitment call with Agnieszka from KUBO Client interview (may require 2 rounds) Feedback and decision

🏢 Summary: Opportunity to modernize a mission-critical aviation platform by designing and developing cloud-hosted backend services in a scalable, cloud-native AWS environment. The role focuses on building resilient APIs, improving automation and CI/CD pipelines, and managing Kubernetes-based infrastructure to support global aviation data distribution. You will contribute to a large-scale modernization initiative emphasizing scalability, security, and operational excellence. 🗂️ Requirements: Experience developing backend applications in cloud environments, Hands-on experience with Linux, Docker, Apache, and PHP or Java, Strong knowledge of AWS and cloud-native architectures, Experience with Kubernetes and containerized workloads, Experience with CI/CD and Infrastructure as Code, Understanding of cloud security, monitoring, and production support practices, Strong troubleshooting and problem-solving skills, English proficiency at minimum B2 level 📃 Skills: AWS, Linux, Docker, Apache, PHP, Java, Kubernetes, CI/CD, IaC, SQL, SQLServer, MySQL, AI 🏢 Description: We are looking for a Software Engineer to join a team responsible for modernizing a mission-critical aviation platform used by tens of thousands of customers worldwide. You will help design, build, and evolve cloud-hosted backend services that support the distribution of aviation data across desktop, mobile, and aircraft-connected workflows. This is a unique opportunity to work on a high-impact product while contributing to a large-scale modernization initiative focused on cloud-native architecture, automation, scalability, security, and operational excellence. Working closely with cross-functional teams, you will help transform a well-established platform into a modern, resilient, and highly scalable ecosystem capable of supporting future growth and new product offerings. Key responsibilities Develop and modernize backend services hosted in AWS Design and implement scalable, resilient cloud-native solutions Build and improve APIs, integrations, and automated backend processes Enhance CI/CD pipelines, infrastructure automation, monitoring, and observability Manage and troubleshoot Kubernetes-based environments and containerized applications Support production systems and drive reliability, security, and operational improvements Collaborate with product, mobile, desktop, QA, and DevOps teams to deliver high-quality solutions Leverage AI-assisted development tools to improve engineering efficiency while maintaining high standards of quality and security Ideal candidate profile Experience developing backend applications in cloud environments Hands-on experience with Linux, Docker, Apache, and PHP or Java Strong knowledge of AWS and cloud-native architectures Experience with Kubernetes and containerized workloads Experience with CI/CD, Infrastructure as Code, and automation Understanding of cloud security, monitoring, and production support practices Strong troubleshooting and problem-solving skills Ability to work independently and collaborate within distributed teams English min. B2. Nice to Have: Experience modernizing legacy applications and services Experience with SQL Server and MySQL Experience building highly available and resilient production systems Experience using AI-assisted software development tools Conditions Employment type: B2B or UoP Location: Gdańsk Work model: 1 day a week in the office in Gdańsk or less frequently, depending on your availability Salary: up to 190 PLN net/h Benefits: life insurance, private healthcare, Multisport card Recruitment steps Recruitment call with Agnieszka from KUBO Client interview (may require 2 rounds) Feedback and decision

🏢 Summary: The offer is for a Java Engineer to develop, integrate and test safety‑critical avionics software for modern aircraft and urban air mobility solutions. The role involves working in an agile, international environment with a strong focus on quality, safety and continuous improvement. The position is based in Gdańsk with a hybrid work model. 🗂️ Requirements: Bachelor’s degree in engineering, computer science, mathematics or related field, Commercial experience with Java, Experience with object-oriented design, Experience developing web services (REST or SOAP), Experience or strong interest in containerization, Very good command of English 📃 Skills: Java, OOP, REST, SOAP, Docker, OCI, Agile 🏢 Description: Are you an experienced Java Engineer who enjoys working with complex, safety-critical systems? Would you like to develop advanced avionics software used in modern aircraft and future urban air mobility solutions? Join an international engineering team in Gdańsk and build reliable, high‑quality systems for the aviation industry. In this role you will work in a modern tech stack, in an agile environment, with strong focus on quality, safety and continuous improvement. If you are ready for your next step in an international setting – apply today! Key responsibilities Design, develop, integrate and test Java software for avionics and complex electronic systems used in aircraft and related platforms Use modern programming techniques, tools, languages and agile methodologies to deliver high‑quality software components Contribute proactively to project execution plans, helping to define and achieve operational and delivery goals Drive continuous improvements in software engineering processes, product quality, safety and reliability Collaborate closely with customers, stakeholders and international peers to understand requirements and performance expectations Support building a positive team culture, knowledge sharing and high motivation within the engineering team Ideal candidate profile Bachelor’s degree in engineering, computer science, mathematics or a related technical field Solid commercial experience with Java and object‑oriented design Experience in developing web services (e.g. REST, SOAP) Experience or strong interest in containerization technologies (e.g. Docker, OCI) Comfortable working in international, multi‑national project teams Strong willingness to learn new technologies and domains Very good command of English Conditions Location: Gdańsk, Poland Work Model: Hybrid Employment Type: Regular employment (UoP) Salary: Market‑competitive base salary with performance‑based bonus structure and a range of additional benefits Recruitment steps Initial call with a KUBO recruiter Interview(s) with the client Decision and feedback

🏢 Summary: The role involves designing, developing, integrating, and testing Java-based avionics software for complex, safety-critical aircraft systems. You will work in an agile, international environment using modern technologies to deliver high-quality, reliable solutions for the aviation industry. The position focuses on software quality, safety, and continuous improvement within advanced aerospace projects. 🗂️ Requirements: Bachelor’s degree in engineering, computer science, mathematics or related technical field, Minimum 4 years of experience with Java, Strong object-oriented design skills, Experience developing web services (REST, SOAP), Knowledge or experience with containerization technologies, Very good command of English 📃 Skills: Java, OOP, REST, SOAP, Docker, OCI, Agile 🏢 Description: Are you Java Engineer who enjoys working with complex, safety-critical systems? Would you like to develop advanced avionics software used in modern aircraft and future urban air mobility solutions? Join an international engineering team in Gdańsk and build reliable, high‑quality systems for the aviation industry. In this role you will work in a modern tech stack, in an agile environment, with strong focus on quality, safety and continuous improvement. If you are ready for your next step in an international setting – apply today! Key responsibilities Design, develop, integrate and test Java software for avionics and complex electronic systems used in aircraft and related platforms Use modern programming techniques, tools, languages and agile methodologies to deliver high‑quality software components Contribute proactively to project execution plans, helping to define and achieve operational and delivery goals Drive continuous improvements in software engineering processes, product quality, safety and reliability Collaborate closely with customers, stakeholders and international peers to understand requirements and performance expectations Support building a positive team culture, knowledge sharing and high motivation within the engineering team Ideal candidate profile Bachelor’s degree in engineering, computer science, mathematics or a related technical field - required 4 years of experience with Java and object‑oriented design Experience in developing web services (e.g. REST, SOAP) Experience or strong interest in containerization technologies (e.g. Docker, OCI) Comfortable working in international, multi‑national project teams Very good command of English Conditions Location: Gdańsk, Poland Work Model: Hybrid Employment Type: Regular employment (UoP) - direct employment by the client, Salary: Base salary with performance‑based bonus structure and a range of additional benefits Recruitment steps Initial call with a KUBO recruiter Interview(s) with the client Decision and feedback

🏢 Summary: Software Engineer role focused on modernizing a mission-critical aviation platform by developing cloud-hosted backend services and scalable cloud-native solutions in AWS. The position involves backend modernization, Kubernetes and container management, CI/CD automation, and operational reliability improvements in a distributed engineering environment. The role offers hybrid work flexibility, B2B or UoP employment, and benefits including healthcare and life insurance. 🗂️ Requirements: Experience developing backend applications in cloud environments, Strong knowledge of AWS and cloud-native architectures, Hands-on experience with Linux, Hands-on experience with Docker, Hands-on experience with Apache, Hands-on experience with Java, Hands-on experience with Spring Boot, Experience with Kubernetes and containerized workloads, Experience with CI/CD, Experience with Infrastructure as Code, Experience with automation, Understanding of cloud security, Understanding of monitoring and production support practices, Strong troubleshooting and problem-solving skills, Ability to work independently and collaborate within distributed teams, English level B2 or higher 📃 Skills: AWS, Linux, Docker, Apache, Java, Spring, Kubernetes, CI/CD, IaC, Automation, SQL, MySQL, Security, Monitoring 🏢 Description: We are looking for a Software Engineer to join a team responsible for modernizing a mission-critical aviation platform used by tens of thousands of customers worldwide. You will help design, build, and evolve cloud-hosted backend services that support the distribution of aviation data across desktop, mobile, and aircraft-connected workflows. This is a unique opportunity to work on a high-impact product while contributing to a large-scale modernization initiative focused on cloud-native architecture, automation, scalability, security, and operational excellence. Working closely with cross-functional teams, you will help transform a well-established platform into a modern, resilient, and highly scalable ecosystem capable of supporting future growth and new product offerings. Key responsibilities Develop and modernize backend services hosted in AWS Design and implement scalable, resilient cloud-native solutions Build and improve APIs, integrations, and automated backend processes Enhance CI/CD pipelines, infrastructure automation, monitoring, and observability Manage and troubleshoot Kubernetes-based environments and containerized applications Support production systems and drive reliability, security, and operational improvements Collaborate with product, mobile, desktop, QA, and DevOps teams to deliver high-quality solutions Leverage AI-assisted development tools to improve engineering efficiency while maintaining high standards of quality and security Ideal candidate profile Experience developing backend applications in cloud environments Strong knowledge of AWS and cloud-native architectures Hands-on experience with Linux, Docker, Apache, Java and Spring Boot Experience with Kubernetes and containerized workloads Experience with CI/CD, Infrastructure as Code, and automation Understanding of cloud security, monitoring, and production support practices Strong troubleshooting and problem-solving skills Ability to work independently and collaborate within distributed teams English min. B2. Nice to Have: Experience modernizing legacy applications and services Experience with SQL Server and MySQL Experience building highly available and resilient production systems Experience using AI-assisted software development tools Conditions Employment type: B2B or UoP Location: Gdańsk Work model: 1 day a month in the office in Gdańsk or less frequently, depending on your availability Salary: 190 PLN net/h - to negotiate Benefits: life insurance, private healthcare, Multisport card

🏢 Summary: Engineering role focused on building and maintaining mission‑critical Python backend services for aviation platforms used by airlines and flight operations worldwide. The position covers the full software lifecycle, from design and implementation to deployment and production support, in close collaboration with domain experts. Work involves developing reliable, high‑availability systems in a demanding, always‑on environment. 🗂️ Requirements: Commercial experience in software development (3+ years mid or 8+ years senior, or strong entry‑level profile), Hands‑on experience with Python in production environments, Experience building backend services and APIs, Experience with automated testing and code reviews, Ability to troubleshoot and debug production systems, Fluent English for technical collaboration, Availability for occasional business travel within Europe 📃 Skills: Python, API, REST, Backend, Testing, Debugging, Git, AWS, Docker, Kubernetes, Java, Spring, Rave 🏢 Description: Do you want to build software in Python and work on systems that directly support airlines and flight operations? Would you like to combine hands‑on engineering with close collaboration with business stakeholders in the aviation domain? We are partnering with aviation customers to grow their engineering and implementation teams and are hiring several profiles: entry‑level, mid‑level and senior engineers. You will contribute to a mission‑critical aviation platform relied on by airlines, pilots and fleet operators around the world. The products operate in a demanding environment, where reliability, accuracy and always‑on availability are essential. You’ll work with experienced engineers and domain experts, shaping core capabilities end‑to‑end – from early discovery and design through delivery to continuous improvement. Key responsibilities Design, develop and maintain backend services for aviation‑related products. Collaborate with product and domain experts to understand requirements and translate them into technical solutions. Move comfortably between technical details and business context, supporting both engineering teams and end users. Take part in the full development lifecycle: design, implementation, code reviews, automated testing and deployment. Troubleshoot and debug production issues, improve reliability and performance, and suggest technical improvements. Ideal candidate profile 3+ years (Mid) or 8+ years (Senior) of experience in software development or a similar engineering role. We can also accept entry level applications if other qualifications are a good match. In simple words - we are building a diverse team! Comfortable working with Python in a production environment (services, APIs, data processing). Fluent in English and used to working with international clients and distributed teams. Open to occasional business travel within Europe. Able to move between technical detail and business context with ease. Nice to have Experience in aviation (e.g. crew planning or airline operations). Experience with Java (e.g. Spring Boot) or another programming language. Rave programming language. Experience as Product Owner or similar role close to the business. Background in large software implementation projects at customers. Exposure to AWS or another cloud platform, test automation frameworks, Docker / Kubernetes. Interest in AI tools and how they can support engineering work. What matters most Ownership mindset and a proactive approach to problems. Strong communication skills with both engineers and business stakeholders/clients. Flexibility and ability to adapt in dynamic, changing environments. Conditions Location: Gothenburg or Gdańsk Work Model: Hybrid from the office in Gothenburg/Gdańsk or fully remote across Poland. Employment Type: B2B contract via KUBO; employment contract also possible. Salary: Competitive, aligned with your seniority and form of cooperation + additional wellbeing & training benefits Recruitment steps Initial call with a KUBO recruiter (and optional technical tests) Interview(s) with the client (in June) Decision, feedback and support through offer and onboarding The start of the assignment will be no earlier than in the second half of August

🏢 Summary: Software Engineer role focused on developing and maintaining aviation systems for modern aircraft, contributing to development, integration, and testing of avionics software. The position involves working with real-time and embedded environments to ensure high quality, safety, and reliability of aerospace solutions. 🗂️ Requirements: Minimum 2 years of experience in software development, Experience in C++, Bachelor of Science degree in Engineering or related field, English proficiency at B2 level or higher, Experience with RTOS, Experience with Linux 📃 Skills: C++, RTOS, Linux, REST, SOAP, VirtualBox, QEMU, Vagrant, Yocto, VxWorks, Deos, FreeRTOS 🏢 Description: Join a global aerospace and technology company that designs advanced avionics and digital solutions for modern aircraft. As a Software Engineer, you will help create and maintain aviation systems used in the aerospace industry worldwide. Key responsibilities Developing software for aviation systems using appropriate techniques and tools Participating in engineering activities (development, integration, testing) Executing the project plan together with the team Contributing to the improvement of quality, safety, and reliability of products Ideal candidate profile 2+ years of professional experience in a similar position Experience in C++ Bachelor of Science degree in Engineering Technology, including Manufacturing Engineering Technology (e.g., chemistry, physics, mathematics). A degree in Aerospace Engineering is a strong advantage English proficiency (minimum B2 level) Experience with RTOS (Real-Time Operating Systems) Experience with Linux Nice to have Experience in developing web services (REST, SOAP, etc.) Experience in virtualization techniques (VirtualBox, QEMU, Vagrant, etc.) Experience in embedded programming (Yocto Project, VxWorks, Deos, FreeRTOS, etc. Conditions Location: Hybrid work model based in Gdańsk or Rzeszów Contract type: UoP (employment contract) Salary: depending on experience and expectations Benefits : flexible working hours, additional paid days off during the holiday season, Learning Together program, MyBenefit program, Employee Recognition Program, medical care, life insurance, Employee Pension Plan (PPE), technical and certification training Recruitment steps Phone call with a recruiter Interview with the client Decision and feedback

🏢 Summary: Long-term Senior Software Engineer role building a cloud-based financial data platform from scratch. The position focuses on designing and developing scalable, real-time data processing solutions in Azure with strong influence on architecture and engineering standards. You will create backend services and data pipelines in a modern, evolving data environment. 🗂️ Requirements: Strong programming skills in Python or Java or C#, Experience with cloud platforms (Azure preferred), Experience building backend services or data processing components, Experience working with data pipelines and ensuring data consistency, Understanding of software design and clean code principles, Experience with CI/CD pipelines, Experience with version control systems 📃 Skills: Python, Java, C#, Azure, Cloud, CI/CD, Backend, Datapipelines 🏢 Description: As a Senior Software Engineer, you’ll be working on data-driven solutions within the financial data and analytics space. This is a long-term collaboration on a project being built from scratch, giving you real influence over architecture, technology choices, and engineering standards from day one. You’ll be shaping platforms that process large-scale, real-time data used across global financial systems, in a modern and evolving data environment. Key responsibilities Design and develop scalable solutions in cloud environment (Azure) Build and maintain data processing components and services Work with data pipelines and ensure data consistency across systems Develop cloud-based applications and services Collaborate with Engineering, Architecture and Product teams Contribute to clean code, CI/CD, automation and system reliability Take part in code reviews and technical discussions Ideal candidate profile Strong programming skills in Python or Java or C# Experience working with cloud platforms (Azure preferred) Experience in building backend services or data processing components Understanding of software design, clean code and good engineering practices Experience with CI/CD pipelines and version control systems Ability to work independently and as part of a team Good communication skills Nice to have Experience with Spark / PySpark / Databricks Experience with data platforms or data engineering concepts Familiarity with event-driven architectures (Kafka, Event Hubs or similar) Experience with Azure data ecosystem (e.g. Fabric) Experience with containers / Kubernetes (AKS) Conditions Form of cooperation: UoP + KUP 50% Salary range: 18 000 - 30 000 PLN gross/month + yearly bonus depends on the results Hybrid work model: 3 days per week in the Gdynia office Benefits: private medical care, Multisport card, employee pension scheme Recruitment steps Call with a KUBO recruiter (approx. 30 min.) Interview with the client (max. 2 rounds) Decision and feedback

🏢 Summary: Senior Full Stack Engineer role focused on building and modernizing a mission-critical flight management system for aviation customers. The position involves developing desktop, mobile, and AWS cloud-native backend services, improving scalability and reliability, and supporting avionics data workflows. The role also includes working with AI-assisted development tools and modern frontend technologies in a flexible work environment. 🗂️ Requirements: Experience developing production software in cloud environments, Strong backend development experience with Java, Experience with Spring, Knowledge of cloud-native architecture patterns, Experience with AWS, Experience with Angular or React, Experience building desktop and mobile applications, Knowledge of Windows, Knowledge of iOS, Knowledge of Android, Experience with CI/CD practices, Experience with monitoring and high availability, Experience using AI-assisted development tools 📃 Skills: Java, Spring, SpringBoot, AWS, Angular, React, Windows, iOS, Android, CI/CD, Claude, Codex 🏢 Description: We are seeking a Senior Full Stack Engineer to help build the next generation of a mission‑critical flight management system that delivers aeronautical charts and navigation databases to the general and business aviation market. The system is evolving into a modern, reliable, multi‑platform experience that lets aviation customers purchase, manage, download and load avionics data wherever they operate, including directly at the aircraft. This role is ideal for an experienced full‑stack product engineer who can work across desktop and mobile applications and modern cloud‑native backend services, strengthening a high‑impact aviation platform that keeps aircraft data current, compliant and ready to fly. Key responsibilities Develop and modernize desktop, mobile and AWS cloud hosted backend capabilities for a mission critical flight management system. Help design scalable, resilient end to end architecture across applications, backend services, cloud infrastructure and avionics data workflows. Build and enhance desktop and mobile application workflows using native, cross platform or modern frontend technologies. Develop and improve cloud native backend services, integrations, automated jobs and operational workflows used by client applications. Improve architecture, reliability, performance, maintainability, CI/CD, monitoring, high availability, disaster recovery and production support practices. Use AI augmented development tools (e.g. Claude, Codex or similar) to support design, implementation, debugging, testing, refactoring and code review while maintaining code quality, security and human accountability. Ideal candidate profile Solid experience developing and modernizing production software across applications and backend services in cloud environments, with a strong focus on cloud‑native solutions built on AWS. Strong background in backend development using Java and Spring Boot, including familiarity with cloud‑native architecture patterns and common operational practices (observability, scalability, security, resilience). Hands‑on experience building user‑facing applications with modern frontend frameworks such as Angular and/or React. Practical experience developing cross‑platform desktop and mobile applications (Windows, iOS, Android) using native, cross‑platform or modern frontend technologies. Experience using AI‑assisted development tools (e.g. Claude, Codex or similar) to support development, testing and code review. Nice to have Background in aviation, navigation data, regulated or other mission‑critical software environments Conditions Location: Gdańsk Przymorze Work model: flexible work model adjusted to your needs and preferences. Employment type: B2B contract via KUBO or UoP Salary: competitive salary adjusted to your experience Benefits: life insurance, private healthcare, Multisport card, and development support (co‑funding of cloud certification exams). Recruitment steps Initial call with a KUBO recruiter Narek Interview(s) with the client Decision, feedback and support through offer and onboarding