Find your next tech and IT Job or contract Java

What you need to know about Java

Java is a widely-used programming language known for its portability and performance. It is essential for building cross-platform applications, from enterprise solutions to mobile apps.

819 results
Permanent
Contractor

Job VacancyData Engineer Java (H/F)

Signe +
Published on
Java

24 months
30k-35k €
215-350 €
Lyon, Auvergne-Rhône-Alpes
Rejoignez une grande plateforme data au sein d'un acteur majeur du secteur de la grande distribution. Vous contribuerez à la conception et au développement de services digitaux centralisés, permettant aux équipes métier d'accéder à des données fiables, accessibles et exploitables via API, tout en accélérant les traitements analytiques et renforçant l'alignement entre les besoins opérationnels et décisionnels. Vous interviendrrez dans un environnement technique moderne, basé sur le cloud et l'écosystème big data, au sein d'une équipe agile et collaborative. Vos missions porteront notamment sur des projets à forte valeur ajoutée liés à la gestion de référentiels critiques (articles, points de vente) et à l'optimisation des pipelines de données. Responsabilités : - Concevoir et développer des services de traitement de données robustes et scalables en Java et/ou Scala, en appliquant les principes de programmation fonctionnelle - Architcter et maintenir des pipelines de données complexes utilisant Apache Spark et Apache Kafka, en garantissant performance et fiabilité sur de grands volumes - Piloter l'ingestion et le traitement de flux de données en temps réel via Pub/Sub, en assurant la cohérence et la qualité des données - Optimiser les requêtes et les modèles de données dans BigQuery, en maîtrisant le SQL avancé pour extraire des insights sur des volumes massifs - Orchestrer et automatiser les workflows de données avec DBT (Data Build Tool), en structurant les transformations et les dépendances - Mettre en place et maintenir les chaînes CI/CD via GitLab CI/CD et Docker Compose, en garantissant des déploiements fiables et reproductibles - Contribuer à l'évolution de l'infrastructure cloud sur Google Cloud Platform (GCP), en suivant les bonnes pratiques de sécurité et d'optimisation - Collaborer activement avec les équipes métier, data science et infrastructure dans un contexte Agile/Scrum, en partageant les connaissances et en proposant des améliorations continues - Documenter et maintenir les standards de qualité et de performance des solutions développées Télétravail : 2 jours par semaine Localisation : Lyon
View this job
Permanent

Job VacancyJava Engineer

CGI
Published on

Swansea, Wales, United Kingdom
At CGI, we're transforming public services through innovative, secure and scalable digital solutions that make a meaningful difference to communities across the UK. As a Java Software Engineer, you'll play a key role in designing and delivering modern, cloud-native applications that help our clients achieve lasting outcomes. Working with Java, Spring Boot and AWS, you'll take ownership of technical solutions, explore creative approaches to complex challenges and contribute to high-quality software engineering. You'll collaborate with talented multidisciplinary teams, sharing ideas and shaping solutions that deliver real value. With the support of an experienced community of professionals, you'll have opportunities to develop your expertise, embrace emerging technologies and make a lasting impact on essential public services. 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 the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a hybrid position, requiring attendance at our client's site in Swansea 3 days a week.
View this job
Permanent

Job VacancyJava Software Engineer

CGI
Published on

Leatherhead, England, United Kingdom
At CGI, you'll help deliver secure, mission-critical solutions where resilient technology and high-quality data make a meaningful difference. As a Java Developer within our Space, Defence and Intelligence business, you'll take ownership of developing robust web services and RESTful APIs that transform complex data into valuable information for front-end applications. Working within a collaborative SAFe Agile environment, you'll have the freedom to solve evolving challenges creatively, contribute ideas and continuously develop your expertise alongside experienced colleagues. This is an opportunity to make a tangible contribution to high-value client programmes while building dependable solutions in a supportive team where your expertise and initiative are valued. 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 this programme, candidates must be sole UK Nationals who are eligible for UK Security Clearance or already hold this clearance. This position will require 5 days a week working out of the CGI Leatherhead office.
View this job
Contractor

Contractor job270540/Développeur Back expérimenté (JAVA 17, Spring Boot,) - Lille (no remote 340 Euro)

WorldWide People
Published on
Java

6 months
320-340 €
Lille, Hauts-de-France
Développeur Back expérimenté (JAVA 17, Spring Boot, Kafka...) - Lille et environs Nous recherchons un ingénieur développeur expérimenté, curieux et passionné par le software craftsmanship, prêt à s'investir dans la compréhension approfondie du périmètre fonctionnel de nos produits, au-delà de la seule dimension technique. Vous interviendrez au cœur de notre plateforme de commerce omnicanal, garantissant l'interaction fluide des périmètres vente, paiement et encaissement pour le web, les magasins et les parcours cross-canal. La mission couvre l'ensemble du cycle de vie des produits. Compétences attendues: Expérience confirmée en développement logiciel, avec appétence pour toucher à l'ensemble de la chaîne de valeur. Capacité à évoluer dans des environnements complexes et en constante évolution. Intérêt marqué pour les problématiques métier et volonté de comprendre les besoins en profondeur. Sensibilité aux principes DevOps et à la qualité logicielle. Goût du travail en équipe, partage de bonnes pratiques et collaboration internationale. Maîtrise de l'anglais indispensable pour interagir dans un contexte global. Goals and deliverables Mission de développeur fullstack -LILLE ET ENVIRONS Expected skillsSkills Skill level Spring Boot Expert KAFKA Confirmed java 17 Expert DOCKER mongo db Confirmed Languages Language level Anglais Fluent Français Bilingual
View this job

Contract roles and jobs for Java

Java Developer (Kotlin, Groovy...)

The Java developer uses the Java language to design, develop, and maintain robust applications, often in back-end or complex system environments.

Fullstack Developer

The fullstack developer leverages Java to handle server-side development and ensure smooth interaction with the front-end.

DevOps Engineer (Cloud)

The devops engineer uses Java to automate, configure, and optimize deployments in cloud environments while ensuring application scalability.

Solutions Architect

The solutions architect uses Java to design modular, reliable, and business-oriented software architectures.

Connecting Tech-Talent

Free-Work, THE platform for all IT professionals.

Free-workers
Resources
About
Recruiters area
2026 © Free-Work / AGSI SAS
Follow us