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 jobBackend developer JAVA Kotlin - full remote

KUBE Partners S.L. / Pixie Services
Published on
Apache Kafka
Java
Kotlin

1 year
€300-550
Netherlands
Je recherche un développeur JAVA Kotlin (Ktor) sénior >6 ans d'xp Nous recherchons un profil techinque capable de challenger le produit, force de proposition, très bon communiquant type Product engineer Capacité à travailler en équipe, faire du pair programming , mob programming, reviews Stack : aws / kubernetes/ terraform / event sourcing Mission full remote en europe 1 an renouvelable Anglais courant très important, francais pas nécessaire Your impact Technical leadership and development • Own and deliver features from end to end, including frontend, backend and infrastructure • Lead the architecture and development of EPI's cloud-based microservices, focusing on scalability, performance, and business alignment • Set high code quality standards, employ best practices for maintainable code, and oversee end-to-end feature development for timely delivery and stakeholder alignment Strategic decision-making • Oversee the platform's development with strategic decisions, considering current needs and growth expectations • Drive innovation within your team to solve complex problems and improve efficiency Cross collaboration • Collaborate closely with cross-functional teams like product management & design, web development, and QA to ensure smooth development and excellent products ? Technology stack • Kotlin, Ktor, MongoDB, OpenAPI, Docker • AWS, Event Sourcing, Kubernetes, Kotest • Yarn, Nextjs , MUI, TypeScript ? To succeed, you should meet at least 70% of these requirements • +7 years of professional experience in software development, including at least 5 years of back-end development and 2 years of front-end experience • Fluent in English (CEFR C1 or C2); German, Dutch, French, or other European languages are a plus • Thrive in a remote-first, multicultural environment • Proven experience in building scalable system architectures and familiarity with modern design patterns and REST API design, coupled with a dedication to clear technical documentation • Proficiency in core backend technologies like Kotlin, Ktor, Docker, Kubernetes, MongoDB and Kafka • Ability to recognize and implement effective automated tests at suitable levels of involvement • Experience in implementing UI/UX that meets user needs • Experienced in Agile methodologies, adaptable to changing project needs and timelines ? Turn back if … • You're not passionate about web technologies or not willing to work in a fully remote environment • You are not interested in delivering feature from end to end
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Contractor
Permanent

Job VacancyExpert Technique - Niveau 3 (Sénior) - Lyon chez ENEDIS

Deodis
Published on
J2EE / Java EE
React
Test-Driven Development (TDD)

12 months
40k-45k €
400-410 €
Lyon, Auvergne-Rhône-Alpes
Contexte de la mission Etre en capacité de gérer des chantiers techniques complexes faisant évoluer l'architecture en privilégiant toujours la robustesse, la qualité et la performance. 5 années d'expérience souhaitées Objectifs et livrables Activité principale o Participation au diagnostic et à la résolution des incidents de productions. o Gestion de chantiers techniques complexes o Répondre aux sollicitations pour la conception, le développement et l'amélioration des solutions techniques o Développements et revues de code sur des problématiques techniques complexes o Support technique o Rédaction de documents techniques o Être garant de la qualité des livrables Activité secondaire o Animation et participation à des ateliers techniques projets ou transverses o Faire le lien avec les équipes de sécurité et d'architecture transverse l'Entreprise Stack technique de l'équipe JIRA, Confluence Kafka, Java, Oracle, Flume, Elasticsearch, Storm, Infinispan, Drools, Spring. Compétences attendues sur le profil Participation au diagnostic et à la résolution des incidents de productions Collaborer avec le reste de l'équipe pour trouver les meilleures solutions aux problématiques techniques rencontrées Développements et revues de code sur des problématiques techniques complexes (de manière occasionnelle) Support technique de dernier niveau Impératif 1: TDD Impératif 2: REACT Impératif 3: JAVA Compétences demandéesCompétencesNiveau de compétence TDD Confirmé REACT Confirmé JAVA Confirmé Impératif 1: TDD Impératif 2: REACT Impératif 3: JAVA
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Contractor

Contractor job262408/Tech Lead full stack Java, Kotlin - Lille

WorldWide People
Published on
Java
Kotlin

3 months
400 €
Lille, Hauts-de-France
Tech Lead full stack Java, Kotlin, NestJS Base de données : PostgreSQL Infrastructure : Kubernetes Méthodologie : Agile / Scrum Outils qualité et observabilité : SonarQube, Datadog, Kibana (ou équivalents) Mission longue Missions principales Définir et piloter les orientations techniques des applications web et mobiles. Participer aux études de conception et aux choix d'architecture. Accompagner et encadrer les équipes de développement via les revues de code, le partage de bonnes pratiques et le coaching technique. Garantir la qualité du code, la couverture de tests, la sécurité et les performances des applications. Contribuer à l'amélioration continue des processus de développement, d'intégration et de déploiement (CI/CD). Identifier et piloter la réduction de la dette technique ainsi que la gestion des risques techniques. Assurer un support technique lors des phases critiques, mises en production et traitement des incidents complexes. Goals and deliverables Environnement technique Front-end : Angular Back-end : Java, Kotlin, NestJS Base de données : PostgreSQL Infrastructure : Kubernetes Méthodologie : Agile / Scrum Outils qualité et observabilité : SonarQube, Datadog, Kibana (ou équivalents) Livrables attendus : Dossiers de conception technique et d'architecture. Code source conforme aux standards projet. Recommandations et arbitrages techniques. Documentation technique et d'exploitation. Pipelines CI/CD et automatisations. Plans d'amélioration de la qualité logicielle et de réduction de la dette technique. Profil recherché Expérience significative en tant que Tech Lead sur des projets web complexes. Maîtrise des architectures modernes, des pratiques DevOps et de l'intégration continue. Solides compétences en développement Java/Kotlin/NestJS et Angular. Capacité à fédérer une équipe, à accompagner les développeurs et à porter les décisions techniques. Forte sensibilité aux enjeux de qualité logicielle, sécurité et performance. Localisation : Hellemmes (59). Mode d'intervention : principalement sur site avec 1 à 2 jours de télétravail par semaine. Quelques déplacements ponctuels sur le territoire national sont à prévoir. Synthèse en une phrase Recherche d'un Tech Lead Full Stack orienté architecture, qualité logicielle et animation technique, capable de piloter la trajectoire technique de l'application VADOR dans un environnement Agile moderne (Angular, Java/Kotlin, NestJS, PostgreSQL, Kubernetes) Expected skillsSkills Skill level java kotlin Confirmed KUBERNETES Confirmed NEXT.JS Confirmed KOTLIN Expert POSTGRESQL Confirmed Développement AngularJS Confirmed
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Permanent
Contractor

Job VacancyJava Application Developer /SAP Hybris

Avanda
Published on

St. Gallen, Switzerland
Unser Kunde, ein führendes eCommerce-Unternehmen mit Sitz in St. Gallen, sucht im Rahmen einer Festanstellung einen Java Application Developer zur Verstärkung des Teams. Aufgaben Aufbau, Wartung und laufende Weiterentwicklung des Java-basierten Backends des Online-Shops auf der Plattform SAP Commerce Cloud (Hybris). Technische Verantwortung für die betreuten Softwarekomponenten über den gesamten Lebenszyklus hinweg – von Design und Implementierung bis hin zu Go-live und laufendem Betrieb. Konzeption und Umsetzung neuer Funktionen sowie Anbindung von Drittsystemen und Services (z. B. PIM, ERP, Zahlungs- und Fulfillment-Lösungen) in enger Zusammenarbeit mit Fachbereichen, externen Partnern und dem Product Owner. Sicherstellung einer stabilen, performanten und zukunftsfähigen E-Commerce-Plattform durch den Einsatz moderner, bewährter Architekturansätze. Pflege der technischen Dokumentation, Übernahme von 2nd-Level-Support-Anfragen sowie enge Abstimmung mit internen und externen Teams zur Sicherstellung eines reibungslosen Betriebs und der kontinuierlichen Weiterentwicklung der Plattform. Requirements Fundierte Kenntnisse in der objektorientierten Java-Entwicklung sowie praktische Erfahrung mit SAP Commerce Cloud (Hybris), einschliesslich Anpassung und Entwicklung eigener Extensions. Gute Kenntnisse aktueller Web- und Backend-Technologien (Spring Framework, REST-APIs) sowie sicherer Umgang mit relationalen Datenbanken wie MySQL und SAP HANA. Erfahrung mit CI/CD-Tools wie Jenkins sowie mit agilen Arbeitsweisen (Scrum, Kanban). Fundiertes Verständnis von E-Commerce-Prozessen und den dazugehörigen Systemen – PIM, ERP, Zahlungsabwicklung und Fulfillment. Gute analytische und lösungsorientierte Denkweise, ausgeprägte Kommunikationsfähigkeiten, einschlägige Berufserfahrung sowie verhandlungssicheres Englisch und Deutschkenntnisse auf Niveau B2.
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Permanent

Job VacancyJava Backend Developer

█ █ █ ██ █ █
Published on
Apache Kafka
Apache Solr
CI/CD

Hounslow, England, United Kingdom

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Permanent

Job VacancyLead Developer (Java)

█ █ █ ██ █ █
Published on
Apache Kafka
CI/CD
Docker

Edinburgh, Scotland, United Kingdom

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Contractor jobSenior Java Software Application Development Engineer

Nexus Jobs Limited
Published on

New York, United States of America
Senior Java Software Application Development Engineer A Senior Application Engineer with strong expertise in the development and maintenance of enterprise level, Java JEE based systems. The candidate will be part of a team responsible for developing and maintaining the KYCView application used by our Compliance business. Duties will include designing and developing new application features / code within the existing application framework, and researching, identifying, and devising solutions for software defects within the application. KYCView is written in Java, and involves the integration of JEE, web services, Oracle, IBM BPM and ODM, and MQ. Demonstrated expertise in analyzing and understanding existing application architectures, and developing solutions within a pre-existing framework, is a must. The Client is looking for a seasoned Java professional with 7 to 12 years plus expertise in working Java. Responsibilities Design and development of enhancements within KYCView application framework Research and resolve defects during all phases of the software development cycle Support and execute functional and performance testing Assists in troubleshooting production environment and tuning the environments Provides guidance on infrastructure and environment setup Ensures technical best practices are followed during all phases of the project Provides guidance on intended solution and best practices during development, configuration and testing phases Performs code reviews and ensures standards are applied to each solution component Qualifications Required: Strong, disciplined analytical and problem-solving skills. Must have at least 10 + years of experience in design, implementation, and audit / review of systems applications, and code Extensive Java, JEE n-tier application experience Experience in design, implementation, and audit / review of enterprise wide, large scale implementations. Knowledge and experience with, WAS, AngularJS 1.x and AngularJS5.0, JavaScript, Java, JPA (Open JPA), Spring Hibernate, CSS, AJAX, JSON, Bootstrap, NodeJS, XML, Servlet and JSP. Experience with SOAP and REST based WebService development. Designed Application in Object Oriented Programming Methodology [OOP] using Component Methodology (Top Down), Catalysis Methodology (Bottom Up). Experience in Spring IOC and J2EE CDI and should have developed application using “Enterprise Architecture Models”. Good experience in recognizing and reusing Design Patterns -GOF, J2EE design patterns, Architectural patterns, SOA Design Patterns, Enterprise Integration Patterns. Experience with WebSphere Application server is required. Good knowledge on logical and physical Data Modeling using normalizing Techniques. Good knowledge of automated CI build and deployment infrastructure and processes for multiple projects using tools like Jenkins ,CARA,GIT and Stash. BS/BA degree in Computer Science or related work experience required. Strong Hands on experience in business object modeling using Hibernate/JPA. You must have eligibility to work in the United States. This is a 12 month contract assignment. The Client and the role is based in downtown New York, USA. Please send your CV to us in Word format along with your daily rate in USD and your availability.
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Contractor job[SCH] Tech Lead Full Stack – Java / Kotlin / Angular - 1763

ISUPPLIER
Published on

10 months
350-400 €
Lille, Hauts-de-France
Dans le cadre d'une mission longue, notre client recherche un Tech Lead Full Stack pour piloter la trajectoire technique d'applications web et mobiles au sein d'un environnement Agile. Le consultant sera garant des choix d'architecture, de la qualité logicielle, des bonnes pratiques de développement et de l'accompagnement technique des équipes, tout en contribuant à l'amélioration continue des processus DevOps et CI/CD. Missions : Définir les orientations techniques des applications web et mobiles Participer aux études de conception et aux choix d'architecture Encadrer et accompagner les équipes de développement Réaliser les revues de code et diffuser les bonnes pratiques Garantir la qualité, la sécurité et les performances des applications Concevoir et développer les évolutions Full Stack Mettre en place et améliorer les pipelines CI/CD Piloter la réduction de la dette technique Participer aux mises en production et au traitement des incidents complexes Assurer la documentation technique et d'exploitation Contribuer à l'amélioration continue des processus Agile et DevOps Nous recherchons un Tech Lead Full Stack disposant d'une solide expérience sur des projets web complexes, capable de définir les orientations techniques, d'accompagner les équipes de développement et de garantir la qualité des applications. Une forte culture DevOps, architecture logicielle et intégration continue est indispensable.
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Contractor

Contractor jobSenior Technical Java and C# .net Software Developer

Nexus Jobs Limited
Published on

£450-500
London, England, United Kingdom
Senior Technical Java and C# .net Software Developer We are currently recruiting a Java with C# .net Senior Software Developer – who can be the lead in the team. You must have at least 5 to 7 years proven track record of developing software with Java and C# .net framework coupled with SQL Server. Ability to own and drive forward Omni channel technical solutions and technical architecture from an IT perspective (with direction from Head of IM, Consumer & Brands) o Ownership of FM Digital Technical architecture including the ongoing review of overall FM Omni technical design, structure and future-fit. Project lead on any future re-platforming for FM.com. o To be the technology lead managing the 'day to day' from a technical perspective o Ensure all technical solutions are best-in-class, future-proofed and align to the wider DBIM vision / strategy (e.g. liaise with wider IM on Security, release processes etc) § For example for the FM global single customer view project, the role would provide all technical advice on architecture, user stories, technical specs and DB IM sign-offs Technical lead for all 3rd party solution providers: a) Salesforce b) Booking Bug c) Shopify. Ensure that all OmniChannel products are working together/integrated as needed to allow single consumer tracking and global database. o Technical lead for China Retail Salesforce integration / WeChatify / Social CRM o Data Management Platform (DMP) technical lead o B2B FMJ / FMD Management CRM (India) technical lead to work with DBIM to ensure that project is delivered + technical specification. o Salesforce Service and Marketing Cloud technical lead to take technical ownership for the delivery of new projects / enhancements o Technical leader to create technical architecture documentation, listing the technical stack of the FM.com suite of applications (front and back end). o Technical Leader to highlight components at security, warranty, support, IM policy risk. o Technical Leader to prepare a plan for short and long term to alleviate / eradicate highlighted risks of the technical stacks. o Alignment of FM Omnichannel technical projects / scope to ensure business, cost and technology efficiencies in conjunction with China and US technical leads · Lead development efforts and deliverables on complex solutions within an Agile framework · Provide strong oversight and ownership of coding efforts, and technical solutions · Contribute to the development of system components as needed · Accountable for solving for all technical aspects and delivery · Serve as an escalation point for technical impediments · Accountable for the articulation of the solutions, to various levels · Delegate structured assignments and monitor the progress · Develop and ensure development standards and practices are adhered to by the development team, i.e. DevOps, coding, code management, and documentation · Provide solutions based on strong technical acumen and technical currency in a variety of technologies · Exposure to Mobile and Cloud application platforms · Ensure the technical activities are aligned with approved architectural designs. · Create technical and strategy documents to articulate the solutions and guide implementations as needed to meet requirements. · Develop strong technical application and product knowledge across the Omni channel portfolio. · Challenge our technology partners and vendors to derive maximum value. · Evaluate vendor solutions and work with vendors as necessary · Provide guidance to onshore, offshore, and near shore development service providers as necessary · Provide strong retail business acumen, and customer focus. · Provide governance for troubleshooting complex system issues as necessary · Develop or contribute to business cases, roadmaps and proposals which may include presentations to senior management. · Collaboration with Business, Technical, and Security Architects, to manage risk identification and risk mitigation tactics associated with the designs. Role-specific knowledge: · 5+ years of senior technical lead. · 5+ years of strong hands-on experience as a developer working on JAVA or .NET Framework standards and technologies - C#.NET, ASP.NET, AngularJS, SQLServer, Web Services, Cloud Platforms, AJAX, JQUERY, XML/JSON, HTML, CSS · Retail / digital technology experience is essential · Experience in SalesForce Service and Marketing Clouds · Safety Knowledge: · Provides a consistent outstanding role model in relation to safety practices with a deep understanding of the importance of safety This is a 6 month contract assignment based in the London. Rate is negotiable and will be in the range £450 to £500 per day. Please send your CV to us in Word format along with your daily rate and availability.
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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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Contractor
Fixed term

Job VacancyBackend Developer

LA International Computer Consultants Ltd
Published on

12 months
£400-450
SW1A 2AH, City of Westminster, England, United Kingdom
Platform/Backend Engineer We're looking for a Platform Engineer / Backend Engineer with strong Java, AWS and Kubernetes skills. Skills required: - Extensive experience in Java 11 and above, Spring Framework, MVC, JDBC, Hibernate, REST Microservices/API's, Cloud API's and AWS services such as Lambda, ECS, EKS and Terraform - Strong Kubernetes experience, including cluster concepts, deployments, services, ingress, config maps, secrets, autoscaling, monitoring/observability and troubleshooting containerized workloads. - Extensive experience in backend development using Oracle PL/SQL and NoSQL databases The contract is for 12 months, inside IR35 and is full time on site in Central London. To be considered for the role please send over your latest CV. 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. A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive 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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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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