Senior Frontend Engineer

Jit Team; Warszawa, Kraków; Hybrid; PLN 210,000 - 320,000; Full time

Benefits offered by this job

Flexible work organization

International environment

Regular integration meetings

Job summary

Jit Team is seeking a Senior Frontend Engineer to join a team developing a mobile trading platform. You will work on complex trading interfaces using React Native and TypeScript, focusing on features such as order tickets, portfolios, and positions.

You will build responsive and reliable user experiences, manage application state, handle offline scenarios, and integrate real-time data. An international, hybrid/work-from-home setup is offered with English daily usage.

Qualifications

• 5-8 years of commercial frontend or mobile app development experience.
• Strong hands-on experience with React Native and TypeScript.
• Experience building complex user interfaces and data-intensive screens.
• Good understanding of state management and real-time data handling.
• Experience with offline handling and network-dependent functionality.
• Familiarity with AI tools and applying them in engineering work.
• Very good English (B2 level).
• Nice to have: engineering degree or related qualification; experience in regulated financial services or trading platforms.

Responsibilities

• Developing and maintaining complex trading interfaces using React Native and TypeScript.
• Building and improving key trading features including order tickets, portfolio views, and position management screens.
• Implementing efficient state management solutions for complex workflows.
• Handling offline scenarios and ensuring reliable UX under varying network conditions.
• Integrating and processing real-time data to keep interfaces accurate and up-to-date.
• Collaborating with cross-functional teams to deliver high-quality mobile trading solutions.
• Using AI tools to support engineering workflows and improve development efficiency.

Skills

React Native

TypeScript

Frontend development

UI design

Real-time data

State management

Offline support

AI tools

English (B2+)

Education

Engineering degree

Tools

Redux

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 a mobile trading platform.

You will work on complex trading interfaces using React Native and TypeScript, focusing on features such as order tickets, portfolios, and positions. The role involves building responsive and reliable user experiences, managing application state, handling offline scenarios, and integrating real-time data.

Responsibilities you will have

• Developing and maintaining complex trading interfaces using React Native and TypeScript
• Building and improvingkey trading features, including order tickets, portfolio views, and position management screens
• Implementing efficientstate management solutions for complex application workflows
• Handlingoffline scenarios and ensuring a reliable user experience under varying network conditions
• Integrating and processingreal-time data to keep trading interfaces accurate and up to date
• Collaborating withcross-functional teams to deliver high-quality mobile trading 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 and TypeScript
• Experience developing complexuser interfaces and data-intensive application screens
• Good understanding ofstate management and real-time data handling
• Experience withoffline handling and network-dependent application functionality
• Familiarity withAI tools and the ability to discuss and demonstrate their use in engineering work
• Very goodEnglish (at least B2 level)
• Nice to have:
  • An engineering degree or a related technical qualification would be an advantage
  • Experience in regulated financial services or trading platforms would be an advantage

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.