Senior Software Engineer – Desktop & Mobile Applications

🏢 Summary: Role focused on developing and maintaining safety-critical embedded software for advanced avionics systems in modern aircraft. The position involves system-level architecture, requirements engineering, and full software lifecycle activities within certification-driven environments. You will collaborate with multidisciplinary teams to deliver compliant, high-reliability solutions for next-generation aviation platforms. 🗂️ Requirements: Experience in safety-critical software development (full lifecycle), Strong experience in embedded C/C++, Experience with system requirements engineering and traceability, Experience in code reviews and adherence to quality standards, Experience in verification, validation, and certification processes, Ability to identify safety and reliability risks, Experience working with cross-functional engineering teams, English proficiency minimum B2 📃 Skills: C, C++, Embedded, DO-178C, ARP4754, MBSE, Avionics, Verification, Validation, Traceability 🏢 Description: We are recruiting for a global organization operating in the aviation industry, focused on developing advanced avionics and embedded systems used in modern aircraft. The team works on safety-critical software and system-level solutions for next-generation aviation platforms. It’s a stable environment with long-term projects and strong engineering standards. You’ll be part of a multidisciplinary team working on embedded systems, with real impact on system architecture, requirements, and certification processes. Key responsibilities Work on system-level architecture and requirements engineering Translate system requirements into software design and implementation Develop and maintain embedded software (C/C++) Participate in code reviews and ensure compliance with standards Support software verification, validation, and certification processes Identify risks, safety, and reliability issues Collaborate with systems engineers and international teams Contribute to process improvements and engineering best practices Ideal candidate profile Experience in safety-critical software development (full lifecycle) Strong experience with C/C++ (embedded) Ability to work with system requirements and maintain traceability Experience with code reviews and quality standards Experience working with cross-functional teams (systems, stakeholders) English min. B2 Nice to have Knowledge of standards like DO-178C, ARP4754 Experience with Model-Based Systems Engineering Background in avionics or other regulated industries Conditions Form of cooperation: UoP + KUP 50% Hybrid work model: 2 days per week in the Gdańsk office Benefits: private medical care, Multisport card, employee pension scheme Recruitment steps Phone call with Recruiter Client interview Feedback and decision W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich. 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 Systems Engineer role in the aviation industry, focused on developing safety-critical avionics and embedded systems for next-generation aircraft. The position involves system architecture, requirements engineering, traceability, and support for verification and certification processes within a regulated environment. You will collaborate with multidisciplinary engineering teams to deliver compliant, high-quality embedded solutions. 🗂️ Requirements: Experience in systems engineering or requirements engineering, Experience in embedded software projects, Ability to translate system requirements into technical specifications, Experience with requirements documentation and traceability, Experience with verification and validation activities, Understanding of embedded software development lifecycle, Knowledge of C, Knowledge of C++, Experience in regulated industries 📃 Skills: C, C++, Embedded, DO-178C, ARP4754, MBSE, Avionics 🏢 Description: We are recruiting for a global organization operating in the aviation industry, focused on developing advanced avionics and embedded systems used in modern aircraft. The team works on safety-critical software and system-level solutions for next-generation aviation platforms. It’s a stable environment with long-term projects and strong engineering standards. You’ll be part of a multidisciplinary team working on embedded systems, with real impact on system architecture, requirements, and certification processes. Key responsibilities Work on system-level architecture, requirements engineering, and technical documentation Analyze, define, and maintain system requirements and ensure full traceability Translate system requirements into technical specifications for software teams Collaborate with software, systems, verification, and certification teams across the development lifecycle Support software verification, validation, and certification activities Participate in reviews of requirements, design documentation, and engineering deliverables Identify risks, safety, and reliability concerns and support mitigation activities Ensure compliance with engineering processes, quality standards, and regulatory requirements Contribute to process improvements and engineering best practices Ideal candidate profile Experience in systems engineering, requirements engineering or embedded software projects Ability to translate customer/system requirements into technical specifications Experience with documentation, traceability and verification activities Strong communication skills and ability to work across multiple engineering teams Understanding of embedded software development lifecycle Understanding of C/C++ and embedded systems Experience in regulated industries (automotive, aerospace, rail, medical devices, industrial automation) Nice to have Knowledge of standards like DO-178C, ARP4754 Experience with Model-Based Systems Engineering Background in avionics or other regulated industries Conditions Form of cooperation: UoP + KUP 50% Hybrid work model: 2 days per week in the office (Gdańsk or Warszawa or Rzeszów) Benefits: private medical care, Multisport card, employee pension scheme Recruitment steps Phone call with Recruiter Client interview Feedback and decision W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich. 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: B2B opportunity to develop advanced software for industrial automation and motion control systems, covering full lifecycle from requirements and architecture to testing and integration. The role involves building web and desktop solutions, co-designing system architecture, and leading component integration in a hybrid work model. 🗂️ Requirements: Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering or related field, Experience with Angular, Experience with JavaScript, Experience with TypeScript, Experience with Java, Strong understanding of object-oriented programming, Experience with at least one OO language: C++ / C# / Java / Python, Knowledge of cloud technologies, English at B2 level minimum 📃 Skills: Angular, JavaScript, TypeScript, Java, Kotlin, C++, C#, Python, Cloud, OOP 🏢 Description: We are recruiting for an established technology company specializing in industrial automation and motion control systems. The company develops advanced software solutions used in both web and desktop applications and focuses on modern engineering standards and high-quality development practices. In this role, you will be responsible for developing software supporting motion control systems, as well as designing system architecture, creating documentation, and integrating system components. The work covers the full development lifecycle – from requirements gathering and implementation to testing and maintenance. Key responsibilities Analyze, gather, and document technical requirements for features and their components Co-create system architecture and designs that meet the project requirements Estimate project work while considering trade-offs between requirements, cost, speed, and reliability Create and execute comprehensive unit test plans; analyze, debug, and resolve anomalies Lead component integration and solve issues across subsystems Ideal candidate profile Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field Experience with Angular, JavaScript, TypeScript, Java Experience with Kotlin (nice to have) Strong understanding of object-oriented programming and experience with at least one OO language: C++ / C# / Java / Python Knowledge of cloud technologies English at a minimum B2 level Experience using AI tools to enhance engineering efficiency is a strong plus Conditions B2B contract Salary: 130–150 PLN net/h Hybrid work model - 3 days per week in Katowice Benefits: private medical care, life insurance, Multisport card Recruitment steps Phone call with Recruiter (20 - 30 min.) Technical verification call by the client Interview with the client Feedback and decision W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich. 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 role involves owning selected areas of a global aviation data platform, driving product strategy, roadmap, and delivery of mission-critical SaaS/DaaS data products. You will work closely with engineering teams to build and optimize cloud-based solutions used by airlines and flight operations worldwide. The position combines product management, analytics, and customer discovery in a highly technical environment. 🗂️ Requirements: 3–7+ years Product Management experience in SaaS, DaaS or software products, Experience owning product roadmap end-to-end, Experience working with engineering teams on technical products, Strong analytical and problem-solving skills, Experience using product analytics and customer feedback, Ability to define product vision, roadmap and success metrics, Experience writing product requirements, epics and user stories, Professional English 📃 Skills: SaaS, DaaS, Cloud, Analytics, KPIs, Roadmapping, Backlog, UserStories, DataPlatforms, ProductAnalytics, English 🏢 Description: Our Client is looking for a Product Manager to join its Integrated Data Solutions team in Gdańsk. In this role, you will own selected areas of a global aviation data platform — from discovery and roadmap definition through delivery and continuous optimization. You will work on mission-critical data products used by airlines, pilots and flight operations teams worldwide. The role combines product strategy, customer discovery, analytics and close collaboration with engineering teams building modern cloud-based solutions delivered in a SaaS / DaaS model. The company is a global leader in digital aviation software and aeronautical data solutions. Its platforms support commercial, business and military flight operations by combining advanced flight-planning technology with high-quality navigation and operational data. Backed by a leading software investment firm since becoming an independent organization in 2025, the company continues to expand its connected aviation ecosystem and modernize how aviation data products are created, delivered and consumed globally. The team is looking for someone who is customer-focused, analytical and comfortable working in a highly technical environment with cross-functional international teams. Key responsibilities Own selected product areas from discovery to delivery and ongoing optimization Define product vision, roadmap, priorities and success metrics Gather and analyze customer feedback, usage trends and market insights Identify product gaps and opportunities for improvement Write product requirements, epics and user stories Work closely with engineering teams on scope, trade-offs and delivery planning Support go-to-market activities together with product marketing and customer-facing teams Monitor KPIs related to adoption, retention, engagement and business impact Drive product improvements based on customer and business feedback Communicate product direction, roadmap updates and priorities to stakeholders Participate in customer meetings, industry events and market analysis initiatives Ideal candidate profile 3–7+ years of Product Management experience in SaaS, DaaS or software products Experience owning a product roadmap or product area end-to-end Strong analytical and problem-solving skills Experience working closely with engineering and cross-functional teams Ability to balance customer needs, technical constraints and business priorities Experience using product analytics and customer feedback in decision-making Strong communication and stakeholder management skills Professional level of English Nice to have Experience with aviation, data platforms or enterprise software products Experience with pricing, packaging or monetization models Background in user research, business analysis or product analytics Experience supporting go-to-market launches Conditions Location: Remote or Hybrid (Gdańsk) Employment type: B2B or UoP Salary: up to 180 PLN/h Benefits: life insurance, private healthcare, Multisport card, growth supprt (co-funding of cloud certification exams) Recruitment steps Initial call with KUBO recruiter - Gosia (approx. 20 min.) Interview(s) with the client Feedback and final decision W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich. 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 Senior Full Stack Engineer to develop and modernize a mission‑critical flight management system delivering aeronautical charts and navigation data across desktop, mobile, and AWS cloud platforms. The role focuses on building scalable, resilient, cloud‑native architectures and improving reliability, security, and CI/CD practices in a high‑availability aviation environment. 🗂️ Requirements: Experience developing production applications and backend services in cloud environments, Hands-on experience with desktop and/or mobile application development, Strong backend development experience with AWS and cloud-native architectures, Experience designing scalable, resilient end-to-end system architectures, Practical experience with CI/CD pipelines and deployment workflows, Experience with containers and Kubernetes, Experience with infrastructure as code, Knowledge of cloud and application security best practices, Experience with AI-assisted development tools 📃 Skills: AWS, React, ReactNative, Tauri, Rust, Kubernetes, Docker, CI/CD, IaC, Cloud, Microservices, AI, 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. Support device and OEM avionics ecosystem compatibility across platforms such as Garmin, Honeywell, Rockwell Collins, Avidyne and others. 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. Hands‑on experience building desktop and/or mobile applications with native, cross‑platform or modern frontend frameworks (e.g. React). Strong background in backend development with AWS , cloud‑native architecture patterns and common operational practices. Practical experience with CI/CD, infrastructure automation, deployment workflows and production support. Experience with containers, Kubernetes and infrastructure as code . Experience using AI‑assisted development tools (e.g. Claude, Codex or similar) to support development, testing and code review. Nice to have Experience with Tauri, Rust, React, React Native or similar technologies for modern desktop and mobile development. Experience modernizing legacy applications or services into cloud‑native, cross‑platform architectures. Experience with systems that interact with external devices, removable media, embedded systems or hardware labs. Experience improving CI/CD, monitoring, alerting, incident response and release practices (including HA/DR). Background in aviation, navigation data, regulated or other mission‑critical software environments. Experience defining safe AI‑assisted engineering workflows for complex, production‑grade codebases. Conditions Location: Gdańsk Przymorze Work model: hybrid, 1–2 days per week from the office, with a flexible schedule adjusted to team needs and your availability. Employment type: B2B contract via KUBO or UoP Salary: up to 190 PLN/h (net on B2B) 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

🏢 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: Mid-to-senior Software Engineer role focused on designing and building cloud-based tools for automated aeronautical data processing within a SaaS/DaaS model. The position involves developing ETL pipelines, backend services, and scalable data solutions in AWS to support mission-critical aviation systems. You will work on production-grade, data-driven platforms with strong emphasis on reliability, automation, and DevOps practices. 🗂️ Requirements: Experience building custom ETL pipelines, Experience designing, deploying and operating services in AWS, Experience with relational and spatial databases (PostgreSQL, PostGIS), Strong commercial experience in Java development, Experience with microservices architecture, Experience maintaining automated CI/CD pipelines, Experience with application monitoring and production debugging, Ability to develop and maintain backend services using Spring Boot, Experience working with Git-based workflows 📃 Skills: Java, Spring, SpringBoot, Python, Angular, PostgreSQL, PostGIS, AWS, EKS, Terraform, GitHub, GitHubActions, FastAPI, Jest, Playwright, Groovy, Spock, PyTest, JDBC, psycopg2, ETL, CI/CD, 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: 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

🏢 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