Senior Frontend Engineer NEW

Jit; Polska; Hybrid; PLN 170,000 - 210,000; Full time

Benefits offered by this job

Flexible work organization

International work environment

Team integration meetings

Job summary

Jit is seeking an experienced Senior Frontend Engineer to join a mobile-focused team developing iOS/Android apps with React Native, Expo and TypeScript.

You will implement native modules, optimize build pipelines, manage releases to Apple App Store and Google Play, and work with cross-functional teams to ship reliable mobile solutions. Proficiency in English (B2+) is required and there’s hybrid/remote work options in Poland.

Qualifications

• 5-8 years of commercial frontend or mobile development
• Strong hands-on React Native, Expo and TypeScript experience
• Experience with native iOS and Android modules
• Knowledge of mobile build pipelines and release processes
• Experience publishing apps to Apple App Store and Google Play Store
• Knowledge of crash monitoring tools and production debugging

Responsibilities

• Develop and maintain mobile apps using React Native, Expo, and TypeScript
• Integrate and maintain native iOS and Android modules
• Build, maintain, and optimize mobile build pipelines
• Manage releases to Apple App Store and Google Play Store
• Monitor crashes, analyze production issues, and troubleshoot with source maps
• Collaborate with cross-functional teams to deliver reliable mobile solutions
• Use AI tools to support engineering workflows and improve efficiency

Skills

React Native

Expo

TypeScript

Mobile development

iOS/Android native modules

Build pipelines

App Store / Google Play

Crash monitoring

Source maps

AI tools

English (B2)

Frontend

Education

Engineering degree

Job description

Remote: Gdańsk / Warsaw / Kraków - hybrid work (1-2 days in the office) or fully remote

Why choose this offer?

• You can expect a flexible work organization
• The international work environment will give you the opportunity to interact with the English language on a daily basis
• The Jit community will bring you a nice time during regular integration meetings

Project

We are looking for an experienced Senior Frontend Engineer to join a team developing and maintaining a mobile platform for iOS and Android. You will work on a mobile application using React Native, Expo, and TypeScript, with a strong focus on native mobile integrations, build pipelines, application releases, and production stability.

Responsibilities you will have

• Developing and maintaining mobile applications using React Native, Expo, and TypeScript
• Integrating and maintainingnative iOS and Android modules
• Building, maintaining, and optimizingmobile build pipelines
• Managing application releases to theApple App Store and Google Play Store
• Monitoringapplication crashes, analyzing production issues, and troubleshooting with source maps
• Collaborating withcross-functional teams to deliver reliable, high-quality mobile solutions
• UsingAI tools to support engineering workflows and improve development efficiency

Expected competences and knowledge

• 5-8 years of commercial experience in frontend or mobile application development
• Strong hands-on experience withReact Native, Expo, and TypeScript
• Experience withnative iOS and Android modules
• Practical knowledge ofmobile build pipelines and release processes
• Experience publishing and maintaining applications on the Apple App Store and Google Play Store
• Knowledge of crash monitoring tools and source maps for production debugging
• Familiarity with AI tools and the ability to discuss and demonstrate their use in engineering work
• Very good English (at least B2)
• Nice to have:
  • An engineering degree or a related technical qualification
  • Experience in regulated financial services or trading platforms

Client – why choose this particular client from the Jit portfolio?

The client is a regulated financial services company specializing in FX and gold trading execution across multiple trading platforms. The organization combines advanced technology with a secure trading environment and transparent pricing models to deliver a high-quality trading experience. The company operates under FCA regulation in the UK and focuses on providing professional customer support while serving clients in the financial trading sector.

About Jit Team

The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.