Senior Frontend Engineer B2B 900 – 1 250 PLN/day

Jit; Województwo pomorskie; Híbrido; PLN 200.000 - 260.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible work organization

International work environment

Hybrid/Remote work options

Descripción de la vacante

Jit is seeking a Senior Frontend Engineer to join a mobile-focused team delivering a React Native app for iOS and Android. You will work on Expo, TypeScript, and native modules, focusing on releases, performance, and reliability in a hybrid work setup across Poland.

You will collaborate with cross-functional teams, contribute to build pipelines, monitor production issues, and explore AI-assisted workflows to enhance development efficiency. Fluency in English (min B2) is required.

Formación

• 5–8 years of commercial experience in frontend or mobile development.
• Strong hands-on experience with React Native, Expo, and TypeScript.
• Experience with native iOS and Android modules.
• Practical knowledge of mobile 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 ability to discuss/apply them in engineering work.
• Very good English (at least B2).
• Nice to have: engineering degree or related technical qualification; experience in regulated financial services or trading platforms.

Responsabilidades

• Developing and maintaining mobile applications using React Native, Expo, and TypeScript.
• Integrating and maintaining native iOS and Android modules.
• Building, maintaining, and optimizing mobile build pipelines.
• Managing application releases to the Apple App Store and Google Play Store.
• Monitoring application crashes, analyzing production issues, and troubleshooting with source maps.
• Collaborating with cross-functional teams to deliver reliable, high-quality mobile solutions.
• Using AI tools to support engineering workflows and improve development efficiency.

Conocimientos

React Native

Expo

TypeScript

Native iOS modules

Native Android modules

Mobile build pipelines

App Store / Play Store releases

Crash monitoring tools

Source maps

AI tools in engineering

English (B2)

Educación

Engineering degree or related qualification

Descripción del empleo

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
• Experiencepublishing and maintaining applications on the Apple App Store and Google Play Store
• Knowledge ofcrash monitoring tools and source maps for production debugging
• Familiarity withAI tools and the ability to discuss and demonstrate their use in engineering work
• Very goodEnglish (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 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.

Here’s how we get from first “hello”
to “welcome aboard”

You’ll meet with our HR team to discuss your experience, approach to software development, and teamwork. We’ll also verify your English language proficiency as part of the conversation. Then, you’ll take part in atechnical interview focused on your skills and problem-solving mindset.

We believe agreat workplace is more than aset of benefits. It’s about trust, long-term relationships, and an environment where people can do their best work.

Share and gain experience. Jit Academy is aplatform serving amutual knowledge exchange. Lecture others and share your expertise or join the audience.

Jit Communities

Join the group of experts. We ensure constant growth, that’s why we keep building communities dedicated to mutual education.

Growth support

We value people who are looking to develop their skillset. We proudly finance avariety of courses and certifications so that you can gain new competencies.

Jit Summer Office

Gain access to the office located at the very beach in Chałupy. Jit Trailer awaits visits of the team members and their families.

Jit Boats

Cruise the bay thanks to the motorboat awaiting at the Yacht Park in Gdynia. Furthermore, there is afleet of jet skis and kites located at the beach in Chałupy.

Would you recommend any IT specialist we could hire? Share the contact and gain abonus if we hire them.

Start the day without haste.
At Jit, we begin and finish the day of work within acertain time frame, in stead of fixed hours.

Bonuses for content creators

We provide bonuses to those willing to participate in industry events as public speakers, and to content creators writing articles for our blog.

Mental health support

Mental health is fundamental. Take advantage of psychologists and psychotherapists’ support and reach for psychoeducational content on the wellbeing platform

We provide our teams with high-quality gear necessary to work. Choose between MacOs or Windows and work the way you prefer.

Teambuilding events

Meet new, interesting people. We’re dedicated to building human relations and often host informal events that bound our team members.

Classes conducted for small groups, lectured
by our teachers, guarantee rapid results.

Take care of your wellbeing. Members of Jit Team, gain access to awide range of medical plans provided by Medicover or PZU.

We provide Multisport and Medicover Sport gym cards so that you can improve your physical condition.

Life insurance

Increase your safety. No matter the form of employment, we provide life insurance plans to our colleagues.

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still wanna be apart of The Team?

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