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Senior React Native Consultant

CRESTT sp. z o.o.Warszawa, mazowieckie, Polska

18 hours ago

Job description

Miejsce pracy : Warszawa

Technologies we use

Expected

React Native
Android

About the project

On behalf of our client – a well-established player in the FinTech industry – we are currently looking for a Senior React Native Consultant to join a greenfield project focused on building a brand-new mobile savings application.

This is a client-facing leadership role involving both hands-on development and strategic architectural decision-making. You’ll work closely with cross-functional teams and help shape the technical foundation of a scalable, secure, and user-friendly mobile app.

Start Date : preferable ASAP (we’re also open to candidates available from August)

Contract Type : B2B

Rate : 185–200 PLN / h net + VAT

Project duration : To be confirmed

Industry : FinTech

Your responsibilities

Define and deliver the MVP version of the app (onboarding, account management, transfers) together with the Tech Lead

Take ownership of architectural decisions, development processes, and mobile security best practices

Collaborate with product managers and designers to ensure smooth, user-centric delivery

Set up CI / CD pipelines and automated testing frameworks

Build with scalability in mind to support future features like open banking integration, savings forecasting, and live chat

Our requirements

6+ years of experience developing mobile applications using React Native

Proven track record of publishing apps to both the App Store and Google Play (ideally with experience automating release processes)

Solid knowledge of native integrations, Turbo / Native modules, and working with native SDKs

Experience with mobile security, device hardening, and real-time communication features

Familiarity with test automation and QA practices

Hands-on experience with native iOS and Android development

Fluency in English (spoken and written)

Strong client-facing and leadership skills

This is how we organize our work

This is how we work

at the client's site

you have influence on the product

you focus on product development

agile

This is how we work on a project

Clean Code

code review

design patterns

Location Requirements

The role requires close collaboration with the client, so we’re looking for candidates based in Warsaw or nearby who are open to working in a hybrid model. Flexibility to attend meetings on-site is a must. Fully remote is not an option.

Please Note

This opportunity is only open to candidates with full commercial experience in mobile app development. Personal or non-commercial projects will not be considered.

Along with your application, please include a portfolio of mobile apps, with links to the App Store / Google Play and a short description of your contributions to each project.

Interested?

If you’re a seasoned React Native expert ready to take the lead on a cutting-edge FinTech project, we’d love to hear from you!

Wyrażam zgodę na przetwarzanie przez Administratora, którym jest CRESTT Sp. z o.o. z siedzibą w Warszawie, danych osobowych zawartych w mojej ofercie pracy (formularzu aplikacyjnym i CV) dla potrzeb niezbędnych do realizacji procesu rekrutacji i selekcji pracowników, w tym również w celu kontaktu ze mną za pośrednictwem telefonu i maila. Pełną informację odnośnie przetwarzania Twoich danych osobowych znajdziesz tutaj.

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Senior React Native • Warszawa, mazowieckie, Polska