Software Engineer (C++)

🏢 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: 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 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: Software Engineer (Python) role focused on developing and maintaining advanced avionics systems in an international environment. The position involves designing, integrating, and testing software solutions using modern technologies and Agile methodologies. It includes collaboration with global teams and contributing to quality, safety, and reliability standards. 🗂️ Requirements: Minimum 2 years of professional experience, Proficiency in Python, Higher education degree in Computer Science, Engineering, or related field, English proficiency at B2 level or higher, Experience with AWS, Experience with ETL processes and tools, Experience with PostgreSQL, Experience with Docker, Knowledge of Agile methodologies, Experience in software design, integration, and testing 📃 Skills: Python, AWS, ETL, PostgreSQL, Docker, Agile 🏢 Description: If you have experience in Python software development and are looking for new challenges in an international tech environment – this opportunity may be of interest to you. We are currently looking for a Software Engineer (Python) for our client, who will join a team working on advanced avionics systems used in the aviation industry. Key responsibilities Developing software using modern technologies and Agile methodologies Designing, developing, integrating, and testing software solutions Actively participating in project planning and execution Contributing to and improving software engineering processes (quality, safety, reliability) Collaborating with clients, stakeholders, and international teams Supporting a positive team culture and team motivation Ideal candidate profile Minimum 2 years of professional experience Proficiency in Python Higher education degree (e.g. Computer Science, Engineering, or related field) English proficiency at a minimum B2 level Experience with AWS, ETL processes and tools, relational databases (PostgreSQL), and containerization (Docker) Conditions Employment contract (UoP) Hybrid work in Gdańsk (1 day per week in the office, Gdańsk) Salary: negotiable, depending on your experience and expectations Additional days off during the holiday season Benefits: private medical care, life insurance, Employee Pension Plan (PPE), technical and certification training Recruitment steps Initial interview with a recruiter Interview with the client Final decision

🏢 Summary: Software Engineer role focused on building and maintaining scalable cloud-based applications with modern frontend technologies and DevSecOps practices. The position involves full software development lifecycle responsibilities, frontend architecture, observability, and collaboration with cross-functional teams in a hybrid work environment. Candidates should have strong experience with JavaScript/TypeScript, frontend frameworks, cloud concepts, and software engineering principles. 🗂️ Requirements: Bachelor's degree in Computer Science, Software Engineering, or related field, 5+ years of professional software development experience, JavaScript, TypeScript, React, Angular, Vue, HTML5, CSS3, Browser APIs, Accessibility, Cloud deployment concepts, Azure, Data structures, Algorithms, Software design principles, SQL, NoSQL, MSSQL, MySQL, MongoDB, GitHub, GitLab, DevSecOps, Frontend architecture, Problem-solving, Fluent English 📃 Skills: JavaScript, TypeScript, React, Angular, Vue, HTML5, CSS3, Azure, SQL, NoSQL, MSSQL, MySQL, MongoDB, GitHub, GitLab, Docker, Kubernetes, CI/CD, Scrum, Kanban 🏢 Description: Summary The Software Engineer will play a key role in designing, developing, and maintaining high-quality software solutions that meet the evolving needs of users and the business, while collaborating with cross-functional teams and contributing through the entire software development lifecycle. Main Responsibilities: Design, develop, test, deploy, and maintain robust, scalable, and high-performance software applications using cloud components. Develop reusable UI components and frontend architecture (design systems, state management, routing, bundling). Write clean, efficient, and well-documented code following best practices. Collaborate with product managers, UX/UI designers, and engineers to define, design, and ship new features. Debug and resolve technical issues, ensuring optimal application performance and reliability. Contribute to architectural discussions and decisions, shaping the future of the technical stack. Stay up-to-date with emerging technologies and industry trends to improve development processes and tools. Participate in code reviews, technical documentation, and continuous improvement of engineering standards. Apply DevSecOps practices: dependency management, vulnerability scanning, secrets handling, and secure coding. Establish observability for frontend applications (real-user monitoring, client-side logging, error tracking, performance monitoring). Identify and implement opportunities for automation and process improvements. Key Requirements: Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent practical experience. 5 years of professional experience in software development. Strong proficiency in JavaScript/TypeScript and modern frontend frameworks (React, Angular, or Vue). Strong understanding of web fundamentals: HTML5, CSS3, browser APIs, security basics, and accessibility. Familiarity with cloud deployment concepts (preferably Azure) and environment configuration. Solid understanding of data structures, algorithms, and software design principles. Experience with SQL and/or NoSQL databases (MSSQL, MySQL, MongoDB, etc.). Experience with version control systems (GitHub/GitLab). Strong problem-solving skills and ability to troubleshoot complex issues. Excellent communication and interpersonal skills. Ability to work independently and manage multiple priorities. Nice to Have: Experience with Docker and Kubernetes. Familiarity with CI/CD pipelines and GitHub actions/workflows. Experience with agile development methodologies (Scrum, Kanban). Proficiency with Agentic IDEs and "Agent in the loop" workflows. Experience in modern CSS architecture and ability to consistently implement design docs. Other Details: Location: Remote (hybrid model) Work Model: Hybrid (3 days in office/week) Work hours: CET Time zone (9 hours) Expected language skill: Fluent English

🏢 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: Design and develop a high-scale, low-latency cloud-native order management system for airlines, replacing legacy ticketing with a modern Offer & Order platform. The role focuses on building and optimizing mission-critical microservices, handling complex state management, and integrating with legacy systems in a cloud environment. You will work in an Agile team to deliver secure, high-performance solutions processing millions of global transactions. 🗂️ Requirements: 6-9 years of software development experience, Experience in Agile software development, Strong experience with Java, Strong experience with Spring, Experience with Web Services, Experience with Git, Experience with Maven, Experience with Jenkins, Experience with Docker, Knowledge of GCP cloud technologies, Strong analytical and problem-solving skills, English proficiency (written and verbal), Legal work permit in Poland 📃 Skills: Java, Spring, WebServices, Git, Maven, Jenkins, Docker, GCP, Agile, Microservices, Cloud 🏢 Description: Project info Our customer is building a cloud-native order management system for airlines that replaces legacy ticketing with a modern, e-commerce-driven "Offer & Order" ecosystem. As a Software Engineer on this high-scale, low-latency platform, you will leverage AI tools to gain productivity while designing, coding, and deploying mission-critical microservices capable of securely processing millions of global transactions. You will tackle complex state management and troubleshoot intricate software issues to handle the complete lifecycle of dynamic travel baskets and seamless legacy system integrations. Working closely with technical panels, you will actively design prototypes, propose architectural enhancements, and align business requirements with advanced technology. If you have the right mindset, join us on this thrilling journey to build a massive market differentiator that will fundamentally transform the global travel industry. Responsibilities Develops, codes, tests and debugs new complex software solutions or enhancements to existing product Designs, plans, develops and improves applications using routine and advanced technology Works on issues where analysis of situations or data requires an in-depth knowledge of application & system Encourage high coding standards, using best practices and high quality Represents team on cross-teams’ meetings Job requirements around 6-9 years of related experience Experience in fast paced Software Development in Agile environment Experience in: Java, Spring, Web Services Experience with tools like Git, Maven, Jenkins, Docker Good knowledge of cloud based technologies (GCP) Excellent analysis and problem-solving skills Good communication skills in English, both written and verbal Must possess a legal work permit in Poland Benefits General benefits - depends on the form of employment Hybrid work model combining office & remote work Attractively located office with collaboration spaces Onsite parking space for employees Referral program with financial bonus Life Insurance Budget for development (including language courses and others), clear career path with the possibility to gain experience in international environment Access to internal Learning Platform with multiple trainings oriented for professional growth Lifestyle benefits: Access to MyBenefit platform (Multisport included) Team Building activities Charity initiatives Working environment promoting diversity and inclusion Health benefits: Private medical care - Platinum Package

🏢 Summary: Software Engineer role in a long-term international project, working in a cross-functional team responsible for full product lifecycle from design to production support. The position involves backend and frontend development using modern technologies in an iterative delivery model. Hybrid work model with 5 days per month in the office. 🗂️ Requirements: Minimum 5 years of commercial software development experience, Experience with at least one programming language: Kotlin, Python, or JavaScript, Willingness to work across backend and frontend technologies, Working knowledge of Unix/Linux environments, Understanding of databases: MongoDB, Redis, PostgreSQL, Experience with HTTP APIs and RESTful services, Ability to provide production support and troubleshoot performance and security issues, Good English communication skills 📃 Skills: Kotlin, Python, JavaScript, Unix, Linux, MongoDB, Redis, PostgreSQL, REST, HTTP, .NET, C# 🏢 Description: Software Engineer (Kotlin / Python / JavaScript) Location: Kraków or Warsaw (hybrid — 5 days per month in the office) Contract type: B2B — 130–140 PLN/h Project: Long-term international project About the Role We are looking for a Software Engineer to join a collaborative product team working in an iterative delivery model. The team is responsible for the full lifecycle of the product — from design and development to production support — following the principle: “you build it, you support it.” This role offers an opportunity to work with modern technologies across backend and frontend, while continuously learning new programming languages and tools. Key Responsibilities Work in a cross-functional team of 4–6 engineers Break down requirements into user stories and deliver iteratively to production Design technical solutions aligned with architectural guidelines Provide production support, including troubleshooting bugs, performance, and security issues Identify and manage technical debt alongside new feature development Collaborate closely with team members, including pair programming Ensure high quality and maintainability of delivered solutions Requirements Minimum 5 years of relevant commercial experience Experience with at least one programming language (Kotlin, Python, or JavaScript preferred) Willingness to learn multiple technologies across backend and frontend Working knowledge of Unix/Linux environments Understanding of databases from a usage perspective (MongoDB, Redis, PostgreSQL) Experience with HTTP APIs (RESTful services) Good English communication skills (team communication in English) Nice to Have Knowledge of .NET / C# What We Offer Hybrid work model — only 5 days per month from the office (Kraków or Warsaw) Private medical care (Medicover) Sports card (Multisport or equivalent) Life insurance Long-term, stable cooperation Opportunity to work with modern technologies in an international environment Support for professional development and learning

🏢 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