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    Senior Mobile Developer

    Senior Mobile Developer

    Type of work
    Employment Type
    Operating mode


    W 7N zapewniamy najlepszą opiekę ekspertom na rynku IT, chcącym pracować w modelu kontraktorskim, w oparciu o jawne i transparentne zasady finansowe. Pracując z nami zyskujesz wsparcie profesjonalnych Agentów, którzy dbają o ciągłość Twoich kontraktów, komfortową pracę, rozwój zawodowy i niezapomniane integracje. Aktualnie pracujemy z ponad 1700 Konsultantami, którzy realizują projekty dla ponad 160 Klientów z różnych branż. Posiadamy 11 biur w siedmiu krajach: Danii, Polsce, Szwecji, Norwegii, Finlandii, USA oraz Indiach.

    Company profile

    Tech stack









      RESTful API





      nice to have


      nice to have

    Job description

    Online interview

    About project

    Currently we are looking for Senior Mobile Developer with expertise in iOS and Android platforms who will join a team working on projects from MarTech industry.


    100% remote work


    • Developing high-quality mobile applications from the ground up, ensuring a seamless user experience
    • Writing and maintaining automated tests to ensure the stability and reliability of the applications
    • Integrating mobile applications with RESTful APIs
    • Profiling and debugging mobile applications to identify and fix performance issues
    • Implementing architectural patterns such as MVP, MVC, MVVM, and Clean Architecture, selecting the most suitable for each project
    • Adhering to mobile app design guidelines for both iOS and Android platforms, taking into account their differences
    • Collaborating proactively with various functions within the company to ensure project success


    • Minimum 5 years of experience developing mobile applications
    • Deep knowledge of iOS and Android platforms
    • Proficiency in writing automated tests
    • Familiarity with RESTful APIs and mobile libraries for networking
    • Familiarity with the JSON format
    • Experience with profiling and debugging mobile applications
    • Strong knowledge of architectural patterns (MVP, MVC, MVVM, and Clean Architecture) and the ability to choose the best solution for the app
    • Familiarity with push notifications
    • Proficiency in Objective-C, JavaScript, or C# is beneficial
    • Experience with integration with phone and messaging apps
    • Ability to work efficiently and independently
    • Ability to share your opinions and proactively partner with all functions
    • Good communication skills in English (both written and spoken) - C1

    We offer

    • Financial transparency: the salary is: 25 200 – 30 240 PLN (150 – 180 PLN/h) + VAT
    • Clear wage model. 7N Consultants know exactly what’s 7N fee for its agent role on the project.   
    • Professional development support. We subsidize trainings, technical certificates, conference participation, and foreign language classes. Our Career Development Program offers consultants advisory support in career planning. Additionally, 7N Consultants have the opportunity to participate in interpersonal skills training through the 7N Secret Code. Learn more about it here: 7N: 7N – The Secret Code   
    • 7N Inspiration Team’s support and an opportunity to join their ranks. They are a group of 7N Consultants who consistently and actively share their professional knowledge and expertise.  
    • Cooperation with real experts – the average professional experience of a 7N consultant is 10 years. Check out one of our discussion panels here: Does a Scrum Master need a background in programming (in Polish) 
    • Comprehensive and personal project support from one of a 7N Agent. Priority regarding project continuity and quality. See what one 7N Consultant said about the role of 7N Agents and project opportunities.  
    • Numerous (10-12 each year) high-end events – both online and offline. See the 7N KickOff 2023 clip here: https://www.youtube.com/watch?v=iSFtQO7cOYQ 
    • Healthcare, Benefit Multisport and life insurance subsidies regardless of cooperation model. Access to Mindgram, a psychological support and professional development platform.  
    • Professional and quality-oriented recruitment process led by the most experienced recruiters in the industry. Read more about it in the 7N candidate recruitment satisfaction survey (in Polish).