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Kotlin developer Jobs in Köln

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Kotlin developer • koln

Zuletzt aktualisiert: vor 12 Stunden
Senior Android Engineer - Mobile Platform

Senior Android Engineer - Mobile Platform

SumUpCologne, Germany
About the team : As a Senior Android Engineer in the Mobile Platform Squad, you’ll be part of the backbone of Mobile Engineering at SumUp.Your team is responsible f...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
App-Developer (w / m / d)

App-Developer (w / m / d)

Cofinpro AGKöln, Deutschland
App-Developer (w / m / d) • Stadt Frankfurt am Main, München, Berlin, Karlsruhe, Hannover, Köln, Stuttgart • Joblevel Berufs­erfahrene • Startdatum Ab Sofort Was Deinen Job ausmacht • Kon...Mehr anzeigenZuletzt aktualisiert: vor 25 Tagen
Business Developer

Business Developer

Eurojob-ConsultingCologne
Rhénanie-du-Nord - Westphalie, Cologne, Düsseldorf, Dortmund, Krefeld, Münster, Aix-la-Chapelle, Duisbourg, Bochum, Essen, Gelsenkirchen, Bielefeld, Wuppertal. EJ5611PD Postulez maintenant $( docume...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
  • Gesponsert
  • Neu!
Senior Frontend Developer (wmd)

Senior Frontend Developer (wmd)

aedifionKöln, North Rhine-Westphalia, Germany
At aedifion you will actively shape the future of energy-efficient building operations.Our mission is to make existing buildings smarter more sustainable and easier to manage making a real contribu...Mehr anzeigenZuletzt aktualisiert: vor 12 Stunden
  • Gesponsert
Lead ROR Developer

Lead ROR Developer

Vivo Talent SolutionsCologne, North Rhine-Westphalia, Germany
Lead / Senior Ruby on Rails Developer (Remote / Hybrid Germany-wide).Remote or hybrid (within Germany).Lead or Senior Software Engineer with experience in Ruby on Rails. Cologne known for their commi...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Senior Developer Mobile Apps (iOS, Android, Web) / Digital Health Excellence Center (w / m / d) - Anwendungsentwicklung, Ingenieur

Senior Developer Mobile Apps (iOS, Android, Web) / Digital Health Excellence Center (w / m / d) - Anwendungsentwicklung, Ingenieur

EY DeutschlandKöln, DE
Are you ready to shape your future with confidence?.Gemeinsam die Welt jeden Tag ein bisschen besser machen.Für diesen Anspruch setzen wir bei EY alles in Bewegung und gehen als Team „al...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Software Engineer (m / w / d) - Anwendungsentwicklung, Ingenieur

Software Engineer (m / w / d) - Anwendungsentwicklung, Ingenieur

itestraKöln, DE
Du bist das Herzstück des Projekts.Das Ziel eines Softwareprojekts ist es lauffähige, korrekte, effiziente Softwareprogramme = CODE mit hohem Nutzen zu liefern.Das können nur hochqua...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Senior Android Engineer - Mobile Platform

Senior Android Engineer - Mobile Platform

SumupCologne, Germany
As a Senior Android Engineer in the Mobile Platform Squad, you’ll be part of the backbone of Mobile Engineering at SumUp. Your team is responsible for creating and maintaining the development enviro...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Android Entwickler

Android Entwickler

Makin Solutions UGCologne, North Rhine-Westphalia, Germany
Homeoffice
Quick Apply
Wir sind ein junges Tech-Consulting-Unternehmen mit Leidenschaft für App-Entwicklung.Statt eigene Produkte zu bauen,.Unternehmen – unter anderem bei der Sparkasse und der Techniker Krankenkasse.Uns...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Mobile Entwickler Android / Kotlin (m / w / d )

Mobile Entwickler Android / Kotlin (m / w / d )

koomioKöln, DE
Als Mobile Entwickler für Android (m / w / d) bist Du verantwortlich für die Weiter- und Neuentwicklung einer oder mehrerer unserer Android Apps. Dabei arbeitest Du eng zusammen mit den Backend-Entwickl...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Consultant / Developer | Software-Entwicklung Full-Stack Webentwicklung (all genders) - Webentwicklung, Anwendungsentwicklung, Consulting, Ingenieur

Consultant / Developer | Software-Entwicklung Full-Stack Webentwicklung (all genders) - Webentwicklung, Anwendungsentwicklung, Consulting, Ingenieur

cronos UnternehmensberatungKöln, DE
IT mit Leidenschaft und Leidenschaft für IT .Du suchst nach einer Möglichkeit, deine Begeisterung für Technologie in einem inspirierenden Umfeld einzubringen? Werde Consultant / ...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
  • Gesponsert
Senior Software Developer Web developer backend (mfd)

Senior Software Developer Web developer backend (mfd)

DokuMe GmbHCologne, North Rhine-Westphalia, Germany
We believe in a future where organizations dont lose their valuable energy to paperwork but can fully invest it in their people. With DokuMe we create structures that connect people simplify process...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
React Developer : in (m / w / d) im Kölner Startup

React Developer : in (m / w / d) im Kölner Startup

GreenPocket GmbHKöln, de
React Developer : in (m / w / d) im Kölner Startup.Du willst mehr sein als ein Byte im Datenmeer? Du möchtest gerne mit Leidenschaft Verantwortung in agativen Teams übernehmen und aktiv mit uns dazu beit...Mehr anzeigenZuletzt aktualisiert: vor 15 Tagen
Tester (gn) App Backend

Tester (gn) App Backend

ExperisKöln
Nutzen Sie unsere Erfahrung und Beratung für Ihre bestmögliche Entwicklung.Als IT Spezialist bringen wir Sie mit namhaften Unternehmen zusammen. Eine transparente Bezahlung ist uns besonders wichtig...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
  • Gesponsert
Frontend Developer

Frontend Developer

AtmosCologne, North Rhine-Westphalia, Germany
Help shape the face of the most advanced AI marketing system.Youll build fast beautiful and highly interactive interfaces using. We dont micromanage here we trust you to own your components challen...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Softwareentwickler / Backend Developer (m / w / d) - Anwendungsentwicklung, Ingenieur

Softwareentwickler / Backend Developer (m / w / d) - Anwendungsentwicklung, Ingenieur

rhenagKöln, DE
Du entwickelst und erweiterst Module auf IBM i mit RPG IV (Fully-Free-Format), Eclipse und SQL.Du erstellst IT-Fachkonzepte auf Grundlage gesetzlicher Neuerungen sowie der Vorgaben der Bundesnetzag...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Freelance Software Developer (Kotlin) - Quality Assurance (AI Trainer)

Freelance Software Developer (Kotlin) - Quality Assurance (AI Trainer)

MindriftCologne, NRW, DE
Homeoffice
Quick Apply
This opportunity is only for candidates currently residing in the specified country.Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of En...Mehr anzeigenZuletzt aktualisiert: vor 8 Tagen
Java Developer

Java Developer

Sollers ConsultingCologne
Sollers Consulting is more than a consultancy and software integrator.As a company founded in 2000, our mission has been to transform the financial & insurance industries by helping them adapt to n...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Application Developer

Application Developer

CompuSafe Data Systems AGKöln, de
Berlin, Bonn, Düsseldorf, Frankfurt am Main, Karlsruhe, Köln, Leipzig, München, Nürnberg, Stuttgart, ...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
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Senior Android Engineer - Mobile Platform

Senior Android Engineer - Mobile Platform

SumUpCologne, Germany
Vor 30+ Tagen
Stellenbeschreibung

About the team :

As a Senior Android Engineer in the Mobile Platform Squad, you’ll be part of the backbone of Mobile Engineering at SumUp. Your team is responsible for creating and maintaining the development environment that enables Mobile Developers to ship high-quality products efficiently. You’ll also provide help and guidance to SumUppers interacting with our mobile apps.

Our engineering culture is autonomous and driven by collaboration and innovation. You’ll connect with mobile engineers across the organization as your initiatives are far-reaching. The squad focuses on :

  • Maintaining CI / CD pipelines for mobile projects.
  • Building tools and infrastructure to enhance the developer experience.
  • Supporting and improving the codebase across SumUp's mobile apps.
  • Driving long-term technical impact at scale across the company.

What you’ll do :

  • Shape the core experience of merchants and developers interacting with SumUp’s Android ecosystem.
  • Develop and maintain tools, frameworks, and infrastructure that enhance the consistency, scalability, and reliability of our mobile apps.
  • Collaborate with cross-functional teams, including product, design, and backend, to deliver seamless experiences.
  • Work on CI / CD systems, developer tooling, and performance optimizations to streamline mobile development processes.
  • Mentor team members and provide technical guidance across projects.
  • Maintain a high bar for engineering excellence and continually raise it by introducing new technologies and best practices.
  • Own technical projects from idea to implementation, ensuring they align with business needs and technical standards.
  • You’ll be great for this position if you have :

  • 5+ years of professional Android development experience, with expertise in Kotlin and modern Android frameworks.
  • Experienced in CI / CD pipelines, with tools like Github Actions, Fastlane, or similar platforms.
  • A deep understanding of testing methodologies and best practices, including writing unit and UI tests.
  • Experienced with modern architecture and design patterns.
  • You’re passionate about developer experience, creating tools, and improving workflows for engineers.
  • Strong collaboration skills and enjoy mentoring and guiding other engineers.
  • Experience with modularized codebases, building and maintaining internal tooling, or SDK development is a plus.
  • Nice to have :

  • Experience providing modules / SDKs to be used by other Mobile Engineers
  • Experience with Fastlane and Ruby
  • Experience Kotlin Multiplatform
  • Why you should join SumUp :

    🌍 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first setup

    🧑‍🔬 We take learning and experimentation seriously with Hack Days every second Friday, and entire global Hack Weeks .

    🌈 Commitment to Diversity and Inclusion : Be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced

    📚 A dedicated annual L&D budget of €2,000 for attending conferences and / or advancing your career through further education

    🚀 Enrolment onto our VSOP program : You will own a stake in SumUp’s future success

    💶 A corporate pension scheme where we match up to 20% of your contributions

    🔄 30 Days Sabbatical : Enjoy the unique opportunity to take a well-deserved break with our 30 days sabbatical benefit after completing 3 years of employment with SumUp

    🔗 Referral Bonus : Earn additional rewards by referring talented individuals to join the SumUp team

    🚵🏾‍♂️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, relocation assistance, subsidised office lunches

    SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by Company policy. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.

    About us :

    Be empowered to do more that matters.

    At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.

    Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify.

    SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited.

    Explore career opportunities with us and join a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business. Discover more about our vibrant and inclusive work culture and how we work on our careers website , and follow our journey on LinkedIn and Instagram .

    Job Application Tip

    We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.