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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Contractor

Contractor jobJava Developer

LA International Computer Consultants Ltd
Published on

6 months
£450-550
M6 7WQ, Salford, England, United Kingdom
Our public sector client is looking for Software Developers to join their team. We are looking for 4 Developers that are able to work on a hybrid basis (2 days per week in the office) and work in one of the following locations: Manchester, Blackpool, Leeds, Newcastle. The role is inside IR35. Please note that due to the nature of the role SC clearance is required. Required experience: Working experience with: -Java, Springboot - Kafka and MongoDB - basic understanding of Docker image and container. - unit testing/TDD, - Gerkin style BDD test, preferably cucumber. -Experience with any one CI/CD tool such as Jenkins, Gitlab or Github Preferred skills: -Working experience of using AWS services such as SQS, S3, SNS and/or KMS Gitlab CI/CD -Working experience with cucumber. -Experience of Gatling or K6 tools for load testing -Experience of working with Scrum/Kanban methodology. -Kubernetes or ECS Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 10 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.
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Permanent

Job VacancyDéveloppeur Java H/F

Webnet
Published on
Java
Kotlin
Quarkus

39k-45k €
Lille, Hauts-de-France
Rejoignez un projet à fort impact technique ! Vous souhaitez évoluer au sein d'une équipe agile et contribuer au développement d'applications à fort trafic ? Vous aimez travailler sur des architectures modernes et développer des applications robustes, de la conception à la mise en production ? Cette mission en régie chez un client de notre agence Lilloise est faite pour vous ! Dans le cadre du renforcement d'une équipe de développement composée de 6 personnes, nous recherchons un Développeur Full Stack Java / ReactJS pour intervenir sur des projets stratégiques autour d'API et d'applications web. Vos missions Au sein d'une équipe Agile, vous serez amené(e) à : Concevoir, développer et faire évoluer des applications web et des API. Développer les fonctionnalités back-end en Java et les interfaces utilisateur en ReactJS. Réaliser les tests unitaires, d'intégration et end-to-end afin de garantir la qualité des développements. Participer aux revues de code et promouvoir les bonnes pratiques de développement. Rédiger les documents de conception technique. Analyser et corriger les anomalies en production en identifiant rapidement leur origine. Contribuer à la qualité, à la sécurité et à la performance des applications. Participer activement aux cérémonies Agile Collaborer avec les différentes parties prenantes techniques pour concevoir les meilleures solutions. Votre environnement technique Vous évoluerez dans un environnement moderne comprenant notamment : Java ReactJS APIs REST & OpenAPI AWS (Lambda, DynamoDB, Aurora PostgreSQL, API Gateway, SQS) Kubernetes Git, GitLab Jenkins Terraform Robot Framework Gatling Architecture hexagonale Domain Driven Design (DDD) CI/CD Notre pôle Java c'est : Intégrer une équipe passionnée et impliquée dans la veille techno Être accompagné(e) dans votre carrière par notre Responsable Technique Adhérer à notre plan d'Excellence via nos process de certifications Participer activement aux réunions techniques de pôle, accéder à nos formations internes (ou en dispenser), partager les best practices Participer à nos JavaContest pointus Pourquoi nous rejoindre ? Certifié Great Place To Work depuis 2018 Possibilité d'être formé et certifié par Webnet Ambiance conviviale avec des évènements internes récurrents (activités sportives, loisirs etc…) ainsi que la garantie d'un équilibre entre votre vie privée et professionnelle Participation à des challenges hebdomadaires : Team #dragondefeu vs #dragondeglace Membre de la charte éthique & diversité (+ 15 nationalités représentées) & Dragon Funding (programme de soutien associatif) Nos petits + : 2 types de primes : de régie et participation Carte ticket restaurant : SWILE (9€ par jour) 🥣 Prise en charge à 80% des abonnements en transport en commun Des convaincus du télétravail Avantage ancienneté : à partir de 2 ans, Webnet vous rembourse un abonnement quel qu'il soit via des coins qui se cumulent
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Job VacancyJava Developer

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Published on
Angular
AngularJS
CI/CD

Manchester, England, United Kingdom

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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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Job VacancyContract - Java Developer

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Published on
Data management
Docker
Java

London, England, United Kingdom

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Permanent

Job VacancyFullstack Developer Node React

BLOOMAYS
Published on
AI
AWS Cloud
Claude Code

Paris, France
Notre client est une startup SaaS B2B française qui aide les équipes commerciales à prospecter plus efficacement grâce à une plateforme tout-en-un de sales intelligence. Le produit centralise la recherche de leads, l'enrichissement de données, l'engagement multicanal et la gestion du pipeline commercial. L'ambition : permettre aux sales d'arrêter de jongler entre plusieurs outils et de se concentrer sur la création d'opportunités. L'équipe tech entre aujourd'hui dans une phase clé : accélérer le delivery produit tout en assainissant l'existant. Dette technique, refacto, design system, legacy, process à simplifier, usage avancé de l'IA… les sujets sont nombreux, concrets, et à fort impact. C'est un environnement fait pour les profils qui aiment construire vite, coder proprement, prendre des sujets de A à Z et utiliser l'IA comme un vrai levier de productivité. 💼 Description du poste Votre mission 🚀 Rejoindre une équipe tech resserrée et contribuer directement à la construction d'un produit SaaS utilisé par des équipes sales, avec un double objectif : shippers des features utiles rapidement et renforcer la base technique sur le long terme. Vous interviendrez sur une stack moderne composée de TypeScript, Node.js, React, Next.js, PostgreSQL, Elasticsearch, Redis et AWS, dans un environnement en monorepo avec une approche Domain-Driven Development pragmatique. Ce que vous allez faire Livrer régulièrement de nouvelles features, avec une vraie culture du MVP et des cycles courts. Découper les sujets intelligemment pour aller vite sans dégrader la qualité. Contribuer à la réduction de la dette technique : refacto, librairies à mettre à jour, legacy à rationaliser. Participer à la consolidation du design system et à son meilleur alignement avec le code existant. Challenger les choix techniques et proposer des solutions simples, robustes et orientées impact. Utiliser l'IA au quotidien — notamment Claude — pour accélérer le développement, améliorer les prompts, générer du code et surtout challenger les outputs produits. Votre environnement Vous travaillerez avec une équipe produit composée notamment d'un designer, d'un CPO, de Product Managers et d'une équipe data. Les développeurs peuvent échanger directement avec le métier et contribuer au cadrage des sujets lorsque cela permet d'aller plus vite et mieux. Ici, l'enjeu n'est pas de sur-architecturer : il faut savoir prendre des décisions, livrer, apprendre, améliorer et garder un haut niveau d'exigence sur le code.
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Job VacancyDéveloppeur android H/F

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Published on
Android studio
Gradle
Java

Paris, France

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Job VacancySenior Full Stack DeveloperJava & Angular

CGI
Published on

United Kingdom
Join CGI as a Senior Full Stack Developer and help shape the digital services that support access to justice across the UK. Working with one of our key UK Government Department clients, you'll take ownership of reusable technology that enables their services to onboard faster, integrate consistently and operate reliably. You'll apply your Java and Angular expertise to solve complex engineering challenges, improve developer experiences and deliver secure, accessible services at scale. You'll have the scope to introduce fresh ideas, explore AI-assisted engineering and influence technical decisions, while working alongside supportive CGI colleagues, architects, product specialists and delivery teams committed to engineering excellence and meaningful public-sector outcomes. 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.
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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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