
Des millions de personnes utilisent Freelancer pour concrétiser leurs idées.
Approuvé par des grandes marques et des startups
Grails is an open-source web application framework that uses the dynamic Groovy programming language on top of the solid Java platform. It emphasizes rapid development and convention-over-configuration, allowing developers to build scalable, high-performance, and feature-rich web applications quickly. Whether you need custom web services, microservices architecture, or full-stack development, Grails provides the tools to create modern, enterprise-grade applications efficiently.
Looking to build a robust web application with Grails? The best way to find a quality Grails Developer is on Freelancer. With the widest range of talented professionals, Freelancer makes it easy to hire experts for every budget.
Publiez gratuitement votre projet et entrez en contact avec des freelancers qualifiés, prêts à commencer dès aujourd’hui. Comparez les offres, les évaluations et les portfolios, et ne payez que lorsque vous êtes satisfait du résultat.
~430 s
avant la première offre
51+
offres par projet
9k+
freelancers en ligne
Aucun frais à l’avance. Ne payez que lorsque vous êtes satisfait du travail réalisé.

9,0
9,0
94%

PERNAMBUT, India
$15 USD par heure
We build AI-powered platforms and enterprise software for businesses. Our work covers Generative AI, RAG, AI agents, document intelligence, workflow automation, operational platforms, ERP, CRM, logistics, reporting and system integrations. Our team includes solution architects, AI engineers, full-stack developers, mobile engineers and enterprise technology specialists with experience across logistics, healthcare, retail, manufacturing, telecom, finance, education and internal business operations. Our work includes: New AI and enterprise application development Modernisation of existing platforms AI integration into current business workflows API, data and third-party system integrations Complex workflow and operational platforms Ongoing engineering, fixes and product support We do not approach AI as a standalone feature. We focus on the complete flow: data input, model behaviour, validation, human review, security and how the output is used within the business. For existing systems, we can review the current codebase, architecture, APIs and workflow before recommending changes. Share your current process, platform, sample data or expected outcome. We can assess the requirement and discuss the right technical approach.

6,5
6,5
81%

Dakar, Senegal
$40 USD par heure
Hi, This is Cheikh Ahmet. Welcome to my profile. It is my pleasure that you are having to look at my profile. I am an Oracle Certified Java Developer, having development experience more than 7 years in Java, Javascript and AWS technologies in the domain of Web Development, Deployment and DevOps. High Level Expertise: * JEE Solutions * SOA * API Integration Expert * Enterprise Software Design & Development * Software Design Consultancy * Database Design * AWS EC2 Major Languages: * Java * Javascript Frameworks: * Spring (Boot/MVC) * MEAN (MySQL, Express, Angular, NodeJS) * VueJS * ORM (Hibernate, MyBatis, JPA) Database: * RDBMS (MySQL/Oracle) * NoSQL (MongoDB) If the project required more resources so we are working as a team of expert engineers as well to meet the timeline and deliver the quality project on time, Our team is an expert in System Administration, Web, Mobile, Dekstop Application development, these are only a few of the major skills. Thank you

6,0
6,0
90%

Belgrade, Serbia
$40 USD par heure
Experienced Web and Mobile Developer adept in all stages of advanced application development, with strong exposure to AI-driven solutions. Knowledgeable in user interface design, testing, and debugging processes, bringing forth expertise in the design, installation, testing, and maintenance of scalable web and mobile systems. Proficient in an assortment of languages including JavaScript, Python, and PHP, with hands-on experience integrating AI models, automation pipelines, services and APIs, and working with databases such as MongoDB and MySQL. Experienced in developing cross-platform and native mobile applications, as well as deploying solutions on cloud platforms like AWS and GCP. Able to effectively self-manage during independent projects and collaborate productively in team-based environments.

3,8
3,8
91%

Rawalakot, Pakistan
$20 USD par heure
I am a full-stack developer and IT Consultant helping startups, businesses, and growing brands build custom websites, web applications, APIs, dashboards, and scalable digital solutions. I focus on delivering secure, high-performing, and business-focused systems that solve real problems and support long-term growth. Core Expertise - Custom Websites and Web Applications - Frontend Development with React and Next.js - Backend Development with Node.js, Python, PHP, and Laravel - API Development and Third-Party Integrations - Dashboards, Portals, and Admin Panels - Database Management with MySQL and MongoDB - SEO, GEO, and AEO optimization - AI Automation, AI Chatbots, and AI Agents - Technical Planning and Consultation I also work with Digital Web Crew, a professional development and growth agency that supports clients with practical, reliable, and results-driven digital solutions. This allows me to combine personal technical expertise with a strong team-based approach whenever a project requires broader support. What You Can Expect - Clear and professional communication - Clean, secure, and scalable development - On-time delivery - Strong attention to detail - Long-term support and reliable project handling My goal is simple: to understand your requirements clearly, deliver quality work on time, and build solutions that create real business value. Invite us for a demo, proof of concept, or pilot project. Regards, Toqeer

3,9
3,9
100%

Ahmedabad, India
$32 USD par heure
I am a full stack web developer working on node js and grails for last 7+ years. ► Established portfolio in Node Js based web applications ► Robust, scalable and complex web apps using groovy/grails ► AWESOME front ends using vue, angular and react ► MVP using Firebase / Firestore ► Google Apps Script / GSuite Specialist ► Impeccable communication ► Proven team player ▬ Read on for more ▪▪▪ I like learning new technologies and taking on new challenges that add more stars to my wide skill set. I work with node js and java / groovy for backend programming. In front end, I have used Vue js(with vuex and vuetify or bootstrap-vue), React(with Redux/Redux-Saga), Angular 8 and Knockout Js. (Yes I have demonstrable experience in ALL these frameworks).

1,9
1,9
100%

Bhaktapur, Nepal
$30 USD par heure
I am a reliable data engineer with 10+ years of proven industry experience in data lake development, data analytics, real-time streaming, and back-end application development. I have built exceptionally stable solutions for high-traffic, high-visibility projects, and understand what it takes to ensure products are robust and dependable. I also have expertise in the Apache Spark ecosystem, Elastic Search, ETL, Databricks, AWS Glue, DMS, Athena, EMR, Data Lake, AWS Big Data, Apache Kafka, Python, Java, SQL, NoSQL etc. Work Experiences in below technologies: • Big data processing using Spark Scala • Building large Scale ETL and Data Transformation • Databricks (Unity Catalog, ETL, Delta Live Table, Orchestration, Streaming, etc.) • Apache Spark • Search Engine solutions using Elasticsearch • Distributed platform development • Machine learning • Python Programming • Algorithm Development • AWS glue - Pyspark • Data Conversion (Excel to CSV, PDF to Excel, CSV to Excel, Audio) • Data Mining • Data extraction • Data Cleansing • Linux Server Administration • Website & Data Migrations • DevOps (AWS, AZURE, GCP) and Cloud Server Management

1,3
1,3
100%

Montevideo, Uruguay
$25 USD par heure
Full Stack and Salesforce Technical Lead specializing in scalable web, mobile, cloud, and AI‑driven solutions for U.S. and Latin American companies. Experienced in leading engineering teams, defining architectures, and delivering complex integrations across EHR systems, call centers, billing platforms, third‑party APIs, and Agentforce/Copilot/OpenAI workflows. Strong track record collaborating with CTOs and directors to shape technical strategy and deliver end‑to‑end solutions. Check my portfolio in https://linkedin.com/in/sirnapa
A Grails developer is a backend software engineer who builds web applications using the Grails framework, a Groovy-based, convention-over-configuration platform built on top of Spring Boot and Hibernate. Hiring a Grails developer gives your business access to rapid full-stack development on the JVM, with clean MVC architecture, GORM data access, and seamless integration with existing Java codebases.
Grails developers design, build, and maintain server-side web applications and RESTful APIs using the Grails framework. They write Groovy code, define domain classes with GORM, build controllers and services, and integrate frontend views or single-page applications with backend logic. Many Grails projects involve modernizing legacy systems, extending Java applications, or rapidly prototyping data-driven products where convention-over-configuration shortens delivery time.
Beyond writing code, a skilled Grails developer handles plugin selection, database schema design, authentication, deployment to cloud environments, and performance tuning. They understand the Spring ecosystem underneath Grails and can drop into Java when needed, making them a strong fit for teams that already run on the JVM.
A freelance Grails developer can take on the full lifecycle of a web application or focus on a specific layer. Typical engagements produce one or more of the following deliverables:
Grails sits in the broader JVM ecosystem, so a competent Grails developer is fluent in a wider stack than the framework alone. Look for working knowledge of:
Grails is widely used where teams need rapid backend development on the JVM without sacrificing the maturity of Java enterprise tooling. Common industries and use cases include:
Strong Grails developers combine framework expertise with broader Groovy and Java fluency. When reviewing profiles, look for repositories showing production Grails code, contributions to Grails plugins, and experience with at least one major version migration. Portfolios should include shipped applications, not only tutorials, and reviews from past clients should mention reliability, code quality, and clear communication.
Use these sample interview questions to qualify candidates quickly:
Freelancer.com gives you direct access to a global pool of Groovy and Grails specialists, from independent backend engineers to full-stack developers experienced in JVM ecosystems. You can review profiles, portfolios, ratings, and verified reviews before you shortlist, and the bidding model means clients on Freelancer.com set their own budgets and receive competitive proposals from qualified freelancers. Whether you need a short patch on a legacy Grails 2 app or a long-term engineer to build a new Grails 6 platform, you can hire on Freelancer.com with confidence, supported by Milestone Payments and built-in chat for clear, ongoing collaboration.
Ready to build, upgrade, or maintain your Groovy and Grails application with proven talent?
Hiring a Grails developer on Freelancer.com is straightforward when you approach it as a structured process. The clearer your brief and evaluation criteria, the faster you will find a freelancer who matches your stack, your domain, and your timeline. Below are the three steps to follow.
The quality of your project post is the single biggest determinant of bid quality. A precise brief filters for Grails developers whose Groovy, GORM, and Spring experience genuinely matches your stack, and it discourages mismatched proposals. Head to the
Bids are short proposals, not just price quotes. Read each one for how the freelancer interprets your brief, the approach they propose, and whether their suggested timeline is realistic for Grails work of this scope. The strongest proposals will reference specific framework features, ask sharp clarifying questions, and show that the freelancer has read your brief carefully.
The final decision combines proposal quality with profile evidence. For Grails work, weigh consistency across multiple JVM projects rather than a single impressive sample, and look for clear written reviews mentioning code quality, communication, and on-time delivery.
Small features, bug fixes, or plugin integrations can often be completed within a few days, while a full custom Grails application or version migration usually takes several weeks to a few months. Timeline depends on domain complexity, the number of integrations, and whether the work involves new development or refactoring an existing codebase.
Yes. Many freelancers on Freelancer.com take on fixed-scope engagements such as upgrading a Grails version, building a single REST API, or fixing performance issues. You can scope the project clearly in your brief and award it to the freelancer whose proposal best matches the work.
A Java developer writes applications directly in Java, often on Spring Boot or Jakarta EE, while a Grails developer works in Groovy on the Grails framework, which sits on top of Spring Boot and Hibernate. Most strong Grails developers can read and write Java as well, since Grails applications regularly call Java libraries and integrate with existing Java services.
If your project is purely backend or API-focused, a Grails specialist is sufficient. If you also need frontend work in Angular, React, or Vue alongside the Grails backend, look for a full-stack Grails developer or hire complementary frontend talent through the same project.
Yes. Upgrading from Grails 2 or 3 to current versions is a common engagement and usually involves dependency updates, GORM and plugin migration, refactoring deprecated APIs, and retesting. An experienced Grails developer will audit the codebase first and propose a phased migration plan.

Freelancer Enterprise
Utilisez notre communauté de 89.5 millions de professionnels pour aider votre entreprise à aller plus loin.

API Freelancer
Pourquoi embaucher des personnes lorsque vous pouvez simplement intégrer notre force de travail talentueuse du cloud à la place ?
Publiez un projet aujourd'hui et obtenez des offres de freelances talentueux
Inspirez-vous avec des projets de Grails

Design de sites Internet.
540 $ US en 7 jours.

Design d'applications.
100 $ US en 1 jour.

Site Internet.
430 $ US en 1 jour.

Design de sites Internet.
140 $ US en 13 jours.

Design d'applications.
200$ US en 19 jours.

Site Internet.
150 $ US en 13 jours.

Site Internet.
240 $ US en 1 jour.

Site Internet.
100 $ US en 1 jour.
Des millions d'utilisateurs, depuis les petites entreprises jusqu'aux grosses compagnies, depuis les entrepreneurs jusqu'aux startups, utilisent Freelancer pour donner vie à leurs idées.
89.5M
89.5M
Utilisateurs enregistrés
25.8M
25.8M
Total des travaux publiés