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 jobMaximo Developers/Testers/Specialists

LA International Computer Consultants Ltd
Published on

8 months
South Derbyshire, England, United Kingdom
Maximo Developer 1. Maximo 7.6/9.x customisation experience 2. Java and automation scripting 3. Upgrade remediation skills 4. Integration development 5. Unit testing and debugging Maximo Testing and Training 1. Test strategy development 2. Functional/system/UAT support 3. Training development and delivery 4. Defect management 5. Upgrade validation processes Maximo Aviation Install Specialist MAS 1. MAS 9.2 installation and configuration 2. Maximo Aviation domain knowledge 3. OpenShift deployment experience 4. DB2 integration understanding 5. Upgrade/remediation troubleshooting 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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Contractor
Permanent
Fixed term

Job Vacancy Senior Java Fullstack Developer

Gamme solutions
Published on
Angular
Docker
J2EE / Java EE

1 year
Brussels, Brussels-Capital, Belgium
Senior Java Fullstack Developer – Dutch📍 Localisation : Aalst, Belgique 🏢 Secteur : Public Sector 💼 Type de mission : Freelance / Sous-traitance 💰 TJM : Ouvert selon profil 🗣️ Langue : Néerlandais obligatoire 📅 Date limite de soumission : 14/08/2026 à 11h00 Contexte de la missionDans le cadre de la poursuite du projet VMJV (Validation Environmental Annual Report), lié à la transposition de la Directive sur les émissions industrielles et du Règlement sur le portail des émissions industrielles, nous recherchons un Senior Java Fullstack Developer. Le consultant rejoindra une équipe technique et participera à la conception, au développement et à l'évolution de solutions applicatives destinées au secteur public. Missions principalesLe consultant sera notamment responsable de : Réaliser ou réviser les analyses techniques et les conceptions techniques en collaboration avec l'architecte VMM. Développer les différentes fonctionnalités définies dans les spécifications fonctionnelles et techniques. Définir les interfaces entre les différentes couches de l'architecture. Développer des services Backend avec Spring Boot. Implémenter les fonctionnalités de sécurité côté Backend. Développer des applications Angular Single Page Applications (SPA). Développer, si nécessaire, des services Node.js Backend-for-Frontend (BFF). Mettre en place des tests unitaires dans une approche TDD (Test-Driven Development). Veiller au respect des exigences non fonctionnelles. Participer aux revues de code selon les principes Gitflow. Effectuer le coding, testing, debugging et la correction des anomalies. Compétences techniques requisesBackendJava / J2EE Spring Boot Spring Security Développement d'applications Java robustes et maintenables APIs REST / Web Services Node.js : apprécié FrontendAngular 2 à 17 Développement d'applications Single Page Applications (SPA) JavaScript / TypeScript DevOps & CloudDocker Kubernetes Expérience avec une Public Cloud Infrastructure : AWS, Azure ou équivalent Git / Gitflow CI/CD Tests & qualitéJUnit TDD Tests unitaires et automatisés Debugging Code review Clean Code et bonnes pratiques de développement Profil recherchéNous recherchons un Développeur Java Fullstack Senior, disposant idéalement de 7 ans ou plus d'expérience, capable de travailler de manière autonome sur l'ensemble du cycle de développement : Analyse → Conception → Développement → Tests → Code Review → Déploiement → Maintenance Le candidat doit être capable d'analyser les besoins, de proposer des solutions techniques pertinentes et de collaborer efficacement avec les architectes et les équipes métier. Expérience secteur publicUne expérience dans le secteur public belge constitue un avantage important. Une connaissance de l'organisation VMM et de ses standards techniques est fortement appréciée. Langue🇳🇱 Néerlandais obligatoire. Le candidat doit être capable de communiquer efficacement dans un environnement professionnel néerlandophone. Profil idéalSenior Java Fullstack Developer | 7+ ans | Java/J2EE | Spring Boot | Angular 2-17 | Docker | Kubernetes | Cloud | JUnit | TDD | Git/Gitflow | Node.js | Dutch 📩 Les profils correspondant à ces critères sont invités à transmettre leur CV rapidement.
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Contractor

Contractor jobDataStage Developer / ETL DevOps Senior

STHREE SAS
Published on

12 months
75001, France
🚀 DataStage Developer / ETL DevOps Senior (H/F)📍 Paris (mode hybride, 1 jour/semaine sur site) 📅 Démarrage : ASAP 🗣️ Anglais professionnel obligatoire ContexteDans le cadre d'un programme stratégique de gestion et d'intégration de données, nous recherchons un(e) DataStage Developer / ETL DevOps Senior pour rejoindre une équipe Agile internationale. Vous interviendrez sur l'ensemble du cycle de vie des traitements de données : analyse, développement, tests, déploiement, support et amélioration continue. Vos missionsParticiper aux analyses fonctionnelles et techniques Concevoir, développer et maintenir des flux ETL sous IBM DataStage Développer et optimiser des requêtes SQL et scripts Shell Participer à la modélisation et à l'intégration des données Réaliser les tests unitaires et d'intégration Assurer la qualité, la performance et la documentation des solutions Accompagner les mises en production et le support RUN Participer aux cérémonies Agile (Scrum) Collaborer avec les équipes métiers, production et développement Contribuer aux initiatives d'amélioration continue Profil recherchéCompétences indispensables✅ IBM DataStage (expert) ✅ SQL avancé ✅ Linux / Shell Scripting ✅ Expérience ETL / Intégration de données ✅ Méthodologie Agile / Scrum ✅ Anglais professionnel Atouts⭐ Expérience secteur Banque / Finance ⭐ Connaissance des environnements réglementaires et de production critiques ⭐ Expérience DevOps et industrialisation des déploiements Environnement techniqueIBM DataStage SQL Oracle / DB relationnelles Linux / Unix Shell Scripting Ordonnancement et traitements batch Agile Scrum
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Contractor

Contractor jobIT Quant / Quant Developer – QIS Equity Derivatives

Espritek
Published on
.NET
Algorithms
C#

3 years
Paris, France
Vous rejoindrez une équipe Commando au cœur des activités Global Markets, intervenant sur des problématiques de QIS (Quantitative Investment Strategies), de pricing et de produits dérivés. À la frontière entre ingénierie financière, développement logiciel et métiers de marché, vous travaillerez directement avec les équipes de trading, structuration et Quant afin de concevoir, modéliser et industrialiser des stratégies et outils quantitatifs. Vos principales missions seront notamment : - Comprendre et challenger les besoins des équipes de trading et de structuration ; - Modéliser et implémenter des stratégies quantitatives et des indices QIS ; - Concevoir et développer des outils de pricing, de backtesting et de simulation ; - Participer au développement et à l'évolution de librairies de pricing et de plateformes utilisées par les équipes Front Office ; - Développer principalement en C#/.NET ; - Manipuler et qualifier des données de marché nécessaires aux calculs et stratégies ; - Participer aux réflexions d'architecture et à l'industrialisation des développements ; - Garantir la qualité, la performance et la maintenabilité du code dans un environnement de production exigeant ; - Intervenir sur l'ensemble du cycle de vie des applications, de la compréhension du besoin jusqu'à leur mise en production et leur support. Le poste nécessite une véritable double compétence : nous ne recherchons pas uniquement un développeur connaissant l'environnement bancaire, ni uniquement un profil Quant académique. Vous devez être capable de comprendre une problématique financière ou quantitative, de dialoguer avec les métiers de marché et de la traduire en une solution logicielle robuste. Une expérience en QIS, Equity Derivatives, produits structurés, options, pricing, hedging, backtesting ou stratégies systématiques constituera un réel atout.
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Contractor jobUX/UI Designer Developer

Nexus Jobs Limited
Published on

£250-400
London, England, United Kingdom
UX/UI Designer and Developer - Manage our external web development and technology partners, to ensure organic growth and conversion opportunities are maximized. - Project management will include collecting requirements from the business, briefing our partners, prioritising asks in line with key business objectives and aligning with timeline of the business. - Deliver high-quality, user-friendly, content across our digital platforms. - Own the delivery of the US and UJ for new / ongoing event website and app related launches. - Identify content improvements with the objective of enhancing engagement, gaining insights, and increasing sales. - Produce and automate top-level website reports to influence decision-making for improvements including user flow Sankey diagrams, channel specific user journeys and holistic business reporting. Develop a UX and UI workflow in alignment with feedback and research to execution, specifically running CRO tests to prove hypotheses. - Expertise in CMS optimisation (VWO, Optimisely or other). - Expertise in SEO, CRO, accessibility and UX best practices. - Proven experience delivering multi format digital content within a CMS environment (Contentful) - Proven experience delivering content-heavy platform targeted at consumer audiences. - Proficiency in integrated performance reports using different data sources including analytics and CRM tools i.e. Google Analytics and HubSpot. - Fundamental understanding of basic adtech i.e. UTM tagging and tracking and setting up of media tags via Google Tag Manager.Take initiative with a solution-oriented approach, within a cross functional team. - Basic understanding of HTML and CSS – or keen to upskill in this area - Strong collaboration skills to help manage input from stakeholders and 3rd parties - Ability to manage and support different projects simultaneously - Possess good knowledge of digital marketing and multi-channel campaigns - Ability to understand website analytics and help drive data-driven conclusions (i.e. Google Analytics) - Ability to recommend decisions underpinned and driven by data. A passion for UX and all things customer first. This is a 3 month contract assignment in Shoreditch London on-site. The daily rate will be circa £250 pd to £400 pd. Do send your CV to us in Word format along with your daily rate and availability.
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Permanent

Job VacancySenior Power BI Developer

Bluetown
Published on

Birmingham, United Kingdom
Job Title: Senior Power BI Developer Location: Completely Remote role, can be Located anywhere in the UK! Salary: Depending on experience Job Type: Permanent, Full Time We're proud to be a trusted leader in SQL development services, and in database, server, cloud, and application services. We enjoy helping our clients, many of which are well-known household brands, stay connected and supported. We are seeking an experienced Senior Power BI Developer to design, develop and support modern business intelligence and analytics solutions using Power BI and other SQL Server technologies. About the role: The successful candidate will combine strong technical expertise with excellent stakeholder engagement skills, helping clients and internal teams transform raw data into meaningful business insights. The role will involve creating enterprise-grade Power BI reporting platforms, and mentoring junior developers to support their technical and professional growth. This is an excellent opportunity for someone who enjoys working across the full BI lifecycle, from requirements gathering and solution design through to development, deployment, optimisation and support. Key duties: Business Intelligence & Reporting Design, develop and maintain enterprise Power BI solutions Design and maintain scalable data models using dimensional modelling and star schema best practices Create intuitive dashboards, reports and visualisations that enable data-driven decision making. Develop and maintain semantic models, datasets, dataflows and Power BI workspaces. Implement best practices for report performance, usability, security and governance. Develop advanced DAX calculations, measures and KPIs. Optimise report and dataset performance, ensuring reliability and scalability Wider Fabric Knowledge would be advantageous Understanding of data warehouse solutions would be ideal but not essential Client & Stakeholder Engagement Work directly with clients and business stakeholders to understand requirements Translate business requirements into robust technical solutions Conduct workshops, technical reviews and design sessions Produce high-quality technical documentation and solution designs Provide guidance and recommendations on best practices and future roadmap opportunities Leadership & Mentoring Provide technical leadership within the BI aspect of the Development team Mentor and support junior BI Developers and Data Engineers Undertake code reviews and provide constructive technical feedback Assist in developing standards, frameworks and development methodologies Promote continual learning and knowledge sharing across the team About you Essential Strong commercial experience developing Power BI solutions Advanced knowledge of Power BI including: DAX Power Query Semantic Models Row Level Security (RLS) Workspace and deployment management Extensive SQL Server development experience Experience designing and implementing dimensional models Experience gathering requirements and producing technical documentation Experience working directly with business stakeholders and clients Experience troubleshooting and performance tuning reporting and database solutions Experience using source control systems such as Git and Azure DevOps Desirable Experience with Azure Data Services Experience with Microsoft Fabric Data Factory Experience with Lakehouse architectures Experience with PowerShell automation Experience with CI/CD pipelines and automated deployments Experience with Python for data engineering or analytics An understanding of data warehousing principles and methodologies is preferable Experience developing ETL/ELT processes Knowledge of Microsoft Fabric and modern data platform technologies is preferable Knowledge of Microsoft Purview and data governance frameworks Microsoft certifications including PL-300, DP-600 or DP-203 Personal Attributes Excellent analytical and problem-solving skills. Strong communication and stakeholder management abilities. Passion for data and new technologies. Self-motivated and capable of working independently. Strong mentoring and coaching capabilities. Commercial awareness and customer-focused mindset. Ability to prioritise and manage multiple assignments simultaneously. Commitment to continual professional development. Why join us: Competitive salary and benefits package Generous Pension Contribution Scheme (up to 10% match) Income Protection/Life Insurance 5 weeks' annual leave (pro rata) plus options to buy/sell days Paid birthday leave, volunteering days, and extra leave for long service Work with modern Microsoft technologies including Fabric, Power BI and Azure. Opportunity to influence technical direction and best practices. Supportive environment focused on learning and professional growth. Exposure to a diverse client base and challenging projects. Opportunity to mentor and develop the next generation of BI professionals. Company-sponsored training and certifications Quarterly team training and get-togethers Please click on the APPLY button to send your CV, you will then be sent a link to a Skills Assessment Form. Only candidates that complete the Skills Assessment form will be considered. Expected recruitment timeline: Applications close: 17 September First interviews: Week of 21 September via video Second interviews: 14 October in person Candidates with experience of; Power BI Developer, Senior BI Developer, Business Intelligence Developer, BI Analyst, Data Visualization Specialist, Microsoft Fabric Developer, DAX Developer, SQL & Power BI Engineer, BI Consultant, Analytics Developer, Reporting Specialist, Data Modeller, Enterprise BI Developer, BI Technical Lead, Business Intelligence Analyst also be considered for this role. IndeedH2F
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Fixed term

Job VacancyPower Platform Developer (SC - Inside IR35)

LA International Computer Consultants Ltd
Published on

6 months
CA2 4JH, Carlisle, England, United Kingdom
We are looking for an SC cleared Power Platform Developer for a primarily remote engagement to manage the upgrade of a legacy MS Access DB application into a Power Platform environment. Occasional visits to site in the North West will be required. Experience includes: - Canvas and model-driven app development - Power Automate (cloud flows, desktop flows) - Dataverse table/relationship build, plus Power Fx - SQL/Access VBA reading ability, to translate existing logic and queries - Solution management, source control (e.g. Azure DevOps) for Power Platform 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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Contractor
Permanent

Job VacancyDéveloppeur Python – AI-Native Developer / IT Innovation

AGH CONSULTING
Published on
AI
Python

6 months
Montrouge, Ile-de-France
Description de la mission : Dans le cadre des projets IT Innovation, vous intégrerez l'équipe AI Factory/Innovation en tant que Développeur IA Python. Vous serez en charge du développement, de l'intégration et de l'optimisation des modèles d'intelligence artificielle pour les différents use cases métiers. Vous travaillerez en mode agile en proximité avec les Data Scientists, les architectes solutions, les équipes métier et IT des autres filières . Vous aurez un rôle clé dans l'industrialisation et le déploiement des solutions IA en production. Expert en agentic coding, vous maîtrisez parfaitement les outils d'IA générative (GitHub Copilot, Cursor, Claude Code, ChatGPT) pour accélérer le développement tout en maintenant des standards de qualité élevés. Vous êtes capable de décomposer des problèmes complexes en instructions claires pour l'IA et de valider/optimiser le code généré. La mission se déroule dans un contexte anglophone, la maîtrise de l'anglais est obligatoire. Résultats attendus (Livrables) : • Participation aux workshops avec les équipes IT/métiers et les Data Scientists • Développement et optimisation de modèles IA/ML pour les use cases métiers • Intégration et déploiement des modèles en production (APIs, microservices) • Utilisation experte du agentic coding pour accélérer le développement sans compromettre la qualité • Mise en place de pipelines MLOps (entraînement, versioning, monitoring) • Tests automatisés et validation des modèles (performance, robustesse, biais) • Documentation technique détaillée (code, modèles, APIs, prompts réutilisables) • Optimisation des performances (latence, coûts, scalabilité) • Veille technologique et recommandations sur les nouvelles techniques IA • Partage des best practices de agentic coding avec l'équipe
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Contractor
Permanent

Job Vacancy Consultant QA BDD – Cash Management

AVA2I
Published on
Cucumber
Gherkin
Jenkins

1 year
Ile-de-France, France
Dans le cadre de la transformation de son approche qualité logicielle, une grande organisation du secteur bancaire recherche un Business Analyst / Consultant QA Senior, spécialisé en Behavior-Driven Development (BDD) et en Shift Left Testing. La mission intervient sur des applications de Cash Management, couvrant notamment les paiements, les virements, la gestion de trésorerie, la réconciliation et le reporting bancaire. L'objectif est d'intégrer la qualité dès les premières phases des projets et d'harmoniser les pratiques de test entre les équipes métier, QA et développement. Missions principalesAccompagner les équipes dans l'adoption des pratiques BDD et Shift Left Testing. Définir les processus, outils et bonnes pratiques adaptés aux différents projets. Participer à l'élaboration de la stratégie de test en amont des développements. Animer des ateliers Three Amigos et Example Mapping avec les Product Owners, développeurs et testeurs. Analyser les besoins métier et les traduire en scénarios de test clairs et exploitables. Rédiger les scénarios BDD en langage Gherkin : Given / When / Then. Structurer et maintenir les feature files dans les outils de gestion de tests. Garantir la lisibilité, la maintenabilité et la réutilisabilité des scénarios. Assurer l'interface entre les équipes QA transverses et les équipes applicatives. Harmoniser les référentiels et garantir la cohérence entre les tests unitaires, d'intégration, système et End-to-End. Contribuer à l'intégration des tests automatisés dans les pipelines CI/CD. Animer des ateliers de sensibilisation et de formation au BDD et au Shift Left. Produire des guides, modèles et supports de bonnes pratiques. Prendre en compte les contraintes réglementaires du secteur bancaire : DORA, DSP2, SWIFT et ISO 20022.
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Contractor jobSenior Python AI/ML Developer - AI-Native Developer - Freelance (H/F)

█ █ █ ██ █ █
Published on
CI/CD
Cursor
DevOps

Paris, France

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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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