Find your next tech and IT Job or contract Java Developer (Kotlin, Groovy...)

The Java developer is a web and application development professional specialized in using Java, a server-oriented programming language. They are also called: Java programmer, Java programmer-analyst, Java software development engineer. This IT technician analyzes the specifications provided by the client to identify a technical solution that meets their technical and functional requirements point by point. They are then responsible for custom designing all or part of the computer program in Java. Then comes the trial and testing phase of the applications. Once the program is operational, they can proceed with writing technical documentation and user guides. The Java developer can progress towards supervisory positions, project manager, IT technical manager or even a commercial career.

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Permanent

Job VacancyJava Developer

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Published on
Angular
AngularJS
CI/CD

Manchester, England, United Kingdom

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Permanent

Job VacancySenior Java Developers

CGI
Published on

United Kingdom
At CGI, we're shaping the future of digital UK Government solutions, building secure, high-impact platforms that improve services for millions across the UK. As a Senior Java Developer , you'll play a pivotal role in designing and developing scalable, resilient back-end systems using the latest Java and microservices technologies. You'll collaborate with skilled professionals who take ownership of their work, share ideas freely, and are empowered to create solutions that make a lasting difference. This is an opportunity to contribute to a variety of major national UK Government programmes where innovation, teamwork, and continuous learning come together to deliver meaningful results for our clients and UK helping improve UK citizens' lives. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK 'Best Employer' by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go. Due to the secure nature of our work programmes, you will need to hold UK Security Clearance or be eligible to go through this clearance. These roles will be predominately hybrid with some work based in UK CGI or client offices depending on the specific programme. Travel away from base office will be expensed.
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Permanent

Job VacancyLead developer Java

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Published on
Code Review
DevOps
Java

50k-60k €
Vieux Lyon, Auvergne-Rhône-Alpes

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Contractor

Contractor jobdéveloppeur SOLIFE

Hanson Regan Limited
Published on
Development

6 months
400-670 £GB
Paris, France
Hanson Regan recherche un développeur SOLIFE pour un contrat de 6 mois renouvelable dans le cadre d'un projet de 2 ans. Nous recherchons un développeur SOLIFE pour rejoindre un projet de transformation majeur axé sur la migration d'un système d'assurance existant vers SOLIFE. Rôle et responsabilités : Contribuer à la migration du système existant vers SOLIFE, notamment aux activités de développement, d'intégration et de migration technique. Analyser les exigences techniques et traduire les spécifications fonctionnelles en solutions robustes et évolutives. Développer et maintenir les composants, les règles métier et les interfaces SOLIFE. Participer à l'intégration de SOLIFE avec les applications et systèmes d'entreprise environnants. Développer et maintenir les API, les services Web et les interfaces nécessaires à l'intégration du système. Analyser et résoudre les problèmes de production, les anomalies et les incidents techniques. Effectuer des analyses techniques et des investigations sur les causes profondes des problèmes identifiés lors du développement, des tests et de la migration. Participer aux tests unitaires, aux tests d'intégration et aux tests système, et apporter son soutien aux activités de recette utilisateur (UAT). Collaborer étroitement avec les analystes métier, les équipes fonctionnelles et les autres développeurs afin de garantir la bonne mise en œuvre des exigences. Contribuer à la documentation technique, aux normes de codage et aux bonnes pratiques. Assister les activités de migration, de basculement et de mise en production, y compris le dépannage technique et le support post-production. Participer aux cérémonies Agile et contribuer à la planification, à l'estimation et à la livraison des projets. Compétences et expérience requises : Expérience confirmée en tant que développeur SOLIFE. Solide expérience pratique de Vermeg SOLIFE, idéalement dans le cadre de projets d'assurance-vie. Expérience de la migration ou de la transformation de systèmes existants. Bonne compréhension des processus métier et de la gestion des contrats dans le secteur de l'assurance-vie. Solide expérience en développement et intégration. La maîtrise de Java/JEE est un atout. Expérience des services Web SOAP/REST, des API et des technologies de bases de données. Capacité à analyser des problèmes techniques complexes et à proposer des solutions efficaces. Expérience du travail en environnement Agile et de la collaboration avec les analystes métier et les équipes fonctionnelles. Excellentes compétences en communication et capacité à travailler dans un environnement international. L'anglais est indispensable. Conformément aux exigences du client, les freelances doivent pouvoir travailler via leur propre entreprise. Nous n'acceptons malheureusement pas les candidatures via des sociétés de portage salarial pour ce poste. Si cette opportunité vous intéresse, veuillez nous contacter au plus vite.
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Contractor

Contractor jobDéveloppeur Flutter / Kotlin

ESENCA
Published on
Flutter
Kotlin

1 year
Lille, Hauts-de-France
ContexteDans le cadre de l'évolution de produits digitaux, nous renforçons une équipe dédiée au développement d'une application mobile. L'équipe évolue dans un contexte de transmission et de montée en responsabilité technique. Le développeur recherché travaillera en étroite collaboration avec le Tech Lead et constituera un véritable référent technique au sein de l'équipe. MissionNous recherchons un(e) Développeur(se) Full Stack expérimenté(e), disposant d'environ 5 à 6 ans d'expérience, capable d'intervenir sur le développement, la conception technique et l'amélioration continue du produit. L'objectif n'est pas de prendre le rôle de Tech Lead, mais d'apporter une réelle expertise technique, de challenger les choix d'architecture et de contribuer à la montée en compétence collective. ResponsabilitésDévelopper et maintenir les fonctionnalités de l'application mobile. Participer à la conception et aux choix d'architecture. Travailler en binôme avec le Tech Lead sur les sujets techniques. Challenger les solutions proposées et contribuer à leur amélioration. Garantir la qualité, la maintenabilité et la robustesse du code. Mettre en place et maintenir les tests automatisés. Respecter les standards et bonnes pratiques de développement du groupe. Participer aux revues de code. Partager les bonnes pratiques et accompagner les autres développeurs. Participer activement aux rituels Agile et à la vie de l'équipe. Environnement techniqueFlutter – Confirmé Kotlin – Confirmé Kafka – Confirmé / souhaitable PostgreSQL Développement mobile et backend Tests automatisés Outils d'IA et assistants de développement
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Contractor

Contractor jobDéveloppeur Android H/F

Insitoo Freelances
Published on
Firebase
Kotlin

2 years
350-370 €
Lille, Hauts-de-France
Basée à Lille, Lyon, Nantes, Grenoble, Marseille, Paris et Bruxelles, Insitoo Freelances est une société du groupe Insitoo, spécialisée dans le placement et le sourcing des Freelances IT et Métier. Depuis 2007, Insitoo Freelances a su s'imposer comme une référence en matière de freelancing par son expertise dans l'IT et ses valeurs de transparence et de proximité. Actuellement, afin de répondre aux besoins de nos clients, nous recherchons un Développeur Android H/F à Lille, France. Contexte : Au sein de l'équipe application, intervention sur l'application mobile grand public utilisée par plus de 550 000 utilisateurs actifs, couvrant l'ensemble du parcours client : courses en ligne, Drive, fidélité et expérience en magasin. Renforcement de l'équipe Android dans un contexte de développement et d'évolution continue de l'application, au sein d'une équipe mobile en ScrumBan. Les missions attendues par le Développeur Android H/F : Descriptif : Développer et faire évoluer l'application Android en Kotlin / Jetpack Compose. Concevoir et intégrer de nouvelles fonctionnalités en collaboration avec le PO et les équipes iOS / Backend. Participer à la conception technique et être force de proposition sur les choix fonctionnels et techniques. Intégrer et exploiter les services Firebase et les composants KMM. Développer les tests unitaires et contribuer à la qualité et à la fiabilité de l'application. Veiller au respect des bonnes pratiques Android, des guidelines UX/UI et des enjeux d'accessibilité. Participer aux revues de code, à la veille technologique et à l'amélioration continue des pratiques de développement. Utiliser GitLab pour la gestion du code et le suivi du cycle de développement.
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Contractor

Contractor jobSr Java Application & Software Developer

RED Commerce - The Global SAP Solutions Provider
Published on

12 months
Romania
Kajenthi@RED Global - Look for a Senior Java developer - Bucharest (Roumania) - Hybrid - Freelance - 6 months + RED Global is looking for a Senior Java Developer - Full-stack, in Bucharest, 2 days on site per week. You'll have to design, develop, integrate and maintain enterprise software solutions within a complex, multi-tier platform. Key responsibilities Analyse functional and technical specifications and translate them into maintainable software solutions. Design, develop, test, integrate and maintain Java-based application components. Develop and integrate web services and APIs for enterprise and multi-tier applications. Contribute to software architecture, technical design and component modelling activities. Apply sound object-oriented design principles, coding standards and reusable development patterns. Participate in code reviews, defect resolution and continuous improvement of software quality. Support application integration and collaborate with testing teams throughout the delivery lifecycle. Produce and maintain technical specifications, design documentation and development records. Contribute actively to Agile ceremonies, estimations and iterative delivery planning. Work independently while communicating clearly with technical and non-technical stakeholders. Experience and skills What you will bring to the role Minimum 10 years of professional IT experience. At least 5 years of hands-on software and application development experience. Expert-level Java development skills in complex production environments. Strong experience developing enterprise web applications and multi-tier or n-tier systems. Proven experience designing and developing web services and APIs. Good practical knowledge of software architecture and technical design. Experience using modelling or CASE tools, such as UML-based design environments. Experience working with Agile software development methodologies. Technical focus Java development Enterprise application Web services & APIs Software architecture & design Modelling / CASE UML or comparable environments tools Delivery methodology Agile If you're interested by this Freelance role, please send me your CV at
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Permanent

Job VacancySenior Fullstack Java Developer

Nexus Jobs Limited
Published on

£60k-75k
London, England, United Kingdom
Senior Fullstack Software Developer Our Client is a relatively young company but growing quickly in the world of financial technology solutions. They are now looking to recruit a Senior Fullstack Software Developer with at least 5 plus years expertise. The ideal candidate will have great problem solving and communication skills and be comfortable with fast paced design, development and deployment working in an agile environment. Worked extensively on iOS, Android & web apps and built complex, responsive and sophisticated apps. We are looking for a smart, innovative technical lead to help us coordinate and drive a project of building a next-gen high-performance app. Duties and Responsibilities: Lead the technical arm of the team in a fast iteration cycles, with tight deadlines using an agile/scrum methodology, while ensuring applications meet quality standards Coordinate configuring, coding, developing, and documenting software specifications throughout the project life cycle (concept, design, build, deploy, test and release to app store; as well as post launch operations such as support, troubleshoot, improvements etc.) Participate in technical, design, and architecture discussions with external partners from the finance sector Collaborate with cross-functional teams to determine business requirements, as well as design, develop, and test application code to ensure that business requirements are met Drive a best practices approach to the continuous improvement of products, processes, and tools. Identify and correct bottlenecks and fix bugs for all production issues Liaise with product development team to plan new features Research and suggest new mobile products, applications and protocol Qualifications / Experience: Highly proficient in React, Swift or Objective C, Java for mobile development; Rails, nodejs and Angular for web development 5 to 7 years of extensive native mobile app (iOS & Android) and web app development experience Demonstrable portfolio of released web apps, mobile applications on the App store or the Android market Experience with multi-threaded client software, client-server architecture and scaling systems Experienced in implementation of Methodologies and the Software Development Life-cycle (Agile) Fully equipped with development Tools (Xcode, Android Studio, Eclipse) and source control tools (Git, Stash) Ability to perform in a team environment Knowledge and experience with the Financial Information Exchange FIX Protocol would be handy as well as working with trading or currency exchange technology. This position is based in the City London. Salary will be circa £60K - £75K. Please send your CV in Word format along with salary and availability.
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Frequently asked questions about working as a Java Developer (Kotlin, Groovy...)

What is the role of a Java Developer (Kotlin, Groovy...)

The Java developer is a computer specialist who focuses on designing software and websites. As the name implies, they have Java programming language down pat! Passionate and versatile, the Java developer must possess solid technical skills and some essential qualities to provide their client with a customized IT solution.

How much does a Java Developer (Kotlin, Groovy...) charge

The mastered frameworks, the company's sector, its location and the technical issues to be solved are all criteria that affect the Java developer's salary. Nevertheless, their daily rate is relatively high, even for a beginner. The latter earns an average of 483 euros per day. Their salary will be around £40K.

What is the definition of a Java Developer (Kotlin, Groovy...)

The Java developer creates applications at the client's request using their preferred language: Java. For this purpose, they must comply with the requirements provided in the specifications. They develop the application, then manage the testing phase as well as maintenance and update planning

What type of mission can a Java Developer (Kotlin, Groovy...) handle

The tasks generally assigned to a Java developer are: • Definition of client needs; • Application programming; • Development of website structure; • Writing explanatory notes so that the written code lines are understandable by other stakeholders; • Adding new functionalities and improving the performance of an existing application; • Performing unit tests and integration tests; • Technical support; • Updating existing code.

What are the main skills of a Java Developer (Kotlin, Groovy...)

Knowledge of Java language must be complemented by knowledge of: • The J2EE development platform; • Other programming languages; • Oracle and SQL databases; • Tools and frameworks such as Spring, Spring boot, React, Angular, Hibernate, AWS, GWT, Struts or Docker; • Algorithms; • Security standards and procedures to combat cyberattacks; • The business environment (market, services, customers). Those who wish to work as Java developers must also master English.

What is the ideal profile for a Java Developer (Kotlin, Groovy...)

In addition to the diploma and technical skills, recruiters require future Java developers to be: • Rigorous and precise in writing code; • Creative; • Good listeners; • Able to work in an agile environment; • Flexible and available; • Able to communicate and explain their knowledge to non-technical people; • Curious, as computer programs and languages are constantly evolving. A strong sense of analysis and organization is also required!

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