Senior Full Stack Engineer (Desktop/Mobile Applications)

We are seeking a Senior Fullstack 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.

• Apply cloud and application security best practices across services, infrastructure, applications, automation, access control and deployments.

• Identify and mitigate risks, issues and technical debt across application code, backend services and cloud infrastructure.

• Collaborate with desktop, mobile, backend, QA, DevOps and product teams to deliver reliable software and services.

• 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

• Experience with Tauri, Rust, React, React Native or similar technologies for modern desktop and mobile application development.

• Experience building cloud native services using AWS managed services and modern cloud migration patterns.

• Practical experience with CI/CD, infrastructure automation, automated jobs, deployment workflows and production support.

• Experience with containers, Kubernetes and infrastructure as code (IaC) or comparable cloud deployment technologies.

• Experience designing and supporting scalable, resilient systems serving high volume or mission critical customer workflows.

• Experience modernizing legacy applications or backend services into cloud native and cross platform architectures.

• Good understanding of high availability, disaster recovery, observability, security and maintainability in production systems.

• Ability to diagnose and resolve complex issues across application code, backend services, infrastructure, containers, databases, platforms and devices.

• Ability to work independently on complex technical problems while collaborating with engineers across multiple domains.

• Strong communication skills and the ability to document technical decisions, risks, trade offs and operational procedures.

Nice to have

• Experience improving HA/DR, monitoring, alerting, incident response, application packaging, signing, or release practices.

• Experience working in aviation, navigation data, regulated, or mission-critical software environments.

• Experience using AI augmented development tools (e.g. Claude, Codex or similar) to support development, debugging, testing and code review.

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

• 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