Hire Grails developers

Build scalable web applications with expert Grails developers. Ensure smooth development with Groovy—hire now and onboard fast.

Roman
Full-stack Web Developer
Ukraine/(GMT +2:00)
Roman, a Senior Full Stack engineer, brings a robust academic background and extensive professional experience to the table. Specializing in Angular and Nest.js, he has a proven track record in enterprise, freelance, and volunteering projects, making him a valuable addition to any team. With a willingness to take on architectural decisions and a passion for sharing knowledge, Roman's expertise in frontend and backend development, combined with his friendly demeanor, make him an excellent candidate for senior-level roles.
Experience
10 years
Availability
Part-time & Full-time
AngularNode.jsJavaScriptTypescriptReactNest.jsMongoDBNext.jsGoogle App EngineHTMLMaterial UIKarmaJasmineFirebaseBootstrapUnit testingMongooseODMPostgreSQLCSSGCPDockerNoSQLKafka
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Ricardo
Platform Engineer
Portugal/(GMT)
Ricardo is a senior Platform and DevOps engineer with strong expertise in AWS, Kubernetes, infrastructure automation, and developer enablement. He has led multi-tenant cloud platform projects, implemented GitOps practices, and built reusable CI/CD workflows. Ricardo brings experience leading teams and has worked across both startups and established companies like The Economist.
Experience
14 years
Availability
Full-time
PythonKubernetesAWSCI/CDLinuxGolangTerraformRegression testingGitLab CI/CDNode.jsLaravelNginxPHPMongoDBApacheCakePHPMySQLeCommerceAWS CodeBuildAPIjQueryJavaScriptGCPDockerBashAmazon CloudFrontCDNDatabricksGitHub ActionsLogstashKibanaMicroservicesElasticSearchGraphQLReduxReactExpress.jsReact Native
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Marken
Full-stack Web Developer
Albania/(GMT +1:00)
Marken is a strong senior full-stack engineer with over eight years of experience. He demonstrates deep technical expertise in frontend and backend architecture, cloud infrastructure, and event-driven design, with recent experience contributing to AI-powered capabilities and intelligent automation within web applications. He communicates clearly, takes end-to-end ownership of features, and mentors junior developers. He is best suited for hands-on technical roles focused on building scalable products.
Experience
9 years
Availability
Full-time
AWSReactNext.jsNode.jsTypescriptAngularKafkaCI/CDDockerRabbitMQLaravelGCPJavaScriptPHPNest.jsSymfonyCypressKubernetesUnit testingjQueryDjangoGraphQLJenkinsAWS LambdaPostgreSQLPythonMongoDBVue.jsMySQLAI-assisted coding
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Roko
Automation QA Engineer
Croatia/(GMT +1:00)
Roko is a Senior QA Automation Engineer with over five years of experience in test automation, technical leadership, and Agile delivery. He specializes in Playwright and TypeScript, leads junior engineers, and owns CI/CD quality gates and automation frameworks. Roko integrates AI-driven workflows into test automation and has startup experience as a SaaS founder. Communication is clear for technical discussions, with a preference for weekly client updates.
Experience
6 years
Availability
Part-time
TypescriptPlaywrightJavaScriptPostmanQA AutomationCI/CDClaude CodePythonGitHub CopilotLLMn8nMCPJenkinsSeleniumJavaDockerAPI TestingSupabaseGitHub ActionsNext.jsSpring BootPostgreSQLOpenAISQLAI agent developmentRegression testing
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Carlos
Full-stack Web Developer
Brazil/(GMT -3:00)
Carlos is a strong senior full-stack engineer with deep expertise in React, Node.js, Next.js, Typescript, and AWS. He has led architectural initiatives such as building payment gateways with event-driven microservices and is skilled in distributed systems and database design. Screenings confirm clear communication, a calm demeanor, and the ability to translate technical concepts for business stakeholders.
Experience
Availability
Part-time
TypescriptReactNode.jsNext.jsAWSTailwind CSSMariaDBAmazon S3PostgreSQLGCPNest.jsAPI GatewayMongoDBKubernetesDockerSQL ServerGitHub ActionsAWS LambdaDynamoDBGraphQL
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Arber
Mobile Developer
Kosovo/(GMT +1:00)
Meet Arber, a dedicated software developer with 6 years of diverse experience across development and engineering projects. He has contributed to all phases of the development cycle and actively participated in software architectural development activities. Arber excels in both independent and team environments, embodying a proactive "can do" attitude that is highly valued.
Experience
7 years
Availability
Part-time & Full-time
React NativeJavaScriptReactTypescriptLaravelHTMLMySQLPHPiOSAndroidJavaObjective CRedux SagaRedux ThunkFirebaseSentryCSSUnity
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Jonathan
Full-stack Web Developer
United States/(GMT -5:00)
Jonathan is a middle to senior full-stack engineer with deep expertise in React, Next.js, Node.js, and AWS, and strong experience in media and advertising tech. He has led frontend and integration projects, shipped complex editor tools, and contributed to microservices and cloud infrastructure. Communication is clear and collaborative, with proven mentoring and product ownership. Python is a secondary skill, suitable for scripting but not as a primary backend stack.
Experience
11 years
Availability
To be verified
PythonReactTypescriptNext.jsNode.jsAWSNoSQLGraphQLDynamoDBWordPressSvelte.jsPHPDockerSQLRedisExpress.jsShopifyRedux
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Anton
Full-stack Web Developer
Netherlands/(GMT +1:00)
Anton is a senior full-stack engineer with strong expertise in backend and frontend development, system design, and database architecture. He has led end-to-end redesigns of business-critical systems, demonstrating the ability to solve complex technical challenges, improve system reliability, and deliver scalable solutions. His key strengths include architectural decision-making, data management, system modernization, and practical problem-solving. He adapts well to team processes and collaborates effectively with cross-functional teams. He is best suited for senior engineering roles focused on backend-heavy systems, data-intensive applications, and full-stack product development.
Experience
14 years
Availability
Part-time & Full-time
PythonReactNode.jsTypescriptNext.jsJavaScriptMySQLjQueryXMLPHPCSQLDockerAWSGCPPostgreSQLRedisCeleryGolangKubernetesAngularJavaTypeORMgRPCElectron.jsLLM
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Victor
Solidity Developer
Chile/(GMT -3:00)
Victor is an experienced Senior Solidity developer with over a decade of experience. During his technical interview, he demonstrated extensive experience and a proven track record of delivering high-quality software solutions. He is particularly interested in smart contracts, NFTs, DeFi, Uniswap, and middleware. Additionally, he has worked as a Lead Developer and collaborated with the Polygon team on a project to create the first-ever ERC721.ERC1155 combo bridge. He is a valuable asset to any blockchain development team!
Experience
12 years
Availability
To be verified
SolidityReactAngularGraphQLNode.js.NETNest.jsTypescriptCryptoCryptographyHyperledgerERC20ERC721Web 3.0
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Developers who got their wings at

How it works

How to hire a Grails developer in four short steps

Fill in a short form

Tell us about your Grails project, timeline and hours, then look through our vetted developers.

Take a 30-minute call

A Lemon.io matching expert goes over your needs and gives you a budget estimate.

Meet 1–3 candidates

Grails specialists are rare, so profiles can take longer than 24 hours. Interview candidates as usual.

Start working

Your developer joins your team part-time or full-time and works directly with you.

Hire Grails developer

Testimonials

Start to finish in under a week with zero wasted time

Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.

Brian DeSpainCEO, 10X ERP

High quality, well-qualified developers

We had an excellent experience. Process is fast from the initial intake through setting up payment.

Katie RoyExecutive Director, The SPEND Initiative

7 developers hired in 24 hours

The developers helped us speed up. They quickly learned their part of the app and we’re grateful for their contribution.

Conor MackenDirector of Engineering, tvScientific

Lemon.io does the hiring work. You pick the Grails developer.

We vet every developer

Every Grails developer passes a live interview with a senior engineer. We accept 1.2% of applicants.

No juniors, 3+ years

We hand-pick your matches

A matching expert picks people by your stack, domain and time zone, and tells you why each one fits.

Human, not a filter

We handle the paperwork

We handle contracts, NDAs and invoices. You pay Lemon.io, and we pay your developer.

You own the IP

We stay after you hire

Your Lemon.io manager stays in touch with you both. If it doesn't work out, we find a replacement for free.

Free replacement

Hire Grails developer

The lemon tea

Grails developers for apps still earning money

Grails apps often run core business workflows years after the original team left. We match JVM developers who know Grails and GORM and can keep them healthy.

GORM and migrations

Using automatic schema updates in production is a warning sign. Strong candidates manage changes with migrations and tune GORM queries.

Look for the JVM depth

Grails rarely shows up alone on a CV. Search full profiles for Groovy, Spring and Hibernate, and choose who you'd like to interview.

Upgrade, estimated

Need a Grails upgrade? Ask for an hours estimate on it before you hire anyone.

What you should know about modern Grails devs

by Nataliia Stasiuk

Recruiter at Lemon.io

Verified Expert

Hiring Guide: Grails Developers

Why Hire Grails Developers

Grails developers are experts in building dynamic, high-performing web applications using the Grails framework—a powerful Groovy-based platform that runs on the Java Virtual Machine (JVM). Businesses hire Grails developers for their ability to deliver rapid application development while leveraging the robustness of Spring Boot and the flexibility of Groovy. Whether you’re building enterprise-grade software, APIs, or scalable SaaS products, Grails developers help you achieve efficiency, modularity, and reduced time-to-market.

What Grails Developers Do

Grails developers design, implement, and maintain web applications using the Grails framework. They combine their expertise in Groovy, Java, and Spring Boot to create elegant, maintainable, and secure backend systems. They also work closely with front-end teams, integrating RESTful APIs, managing data models with GORM (Grails Object Relational Mapping), and deploying applications across multiple environments.

Core Responsibilities of a Grails Developer

Develop and maintain web applications using Grails and Groovy.

Design scalable architectures integrated with Spring Boot and Hibernate.

Implement RESTful APIs for seamless communication between client and server.

Use GORM for efficient database interaction and management.

Ensure application security, performance, and test coverage.

Collaborate with cross-functional teams including front-end, DevOps, and QA engineers.

Deploy applications to cloud environments such as AWS, GCP, or Azure.

Troubleshoot, debug, and optimize code for maximum performance and scalability.

Essential Technical Skills

Languages & Frameworks: Groovy, Grails, Java, Spring Boot, Hibernate.

Database Management: PostgreSQL, MySQL, MongoDB, Redis.

Frontend Integration: React, Angular, or Vue for building dynamic interfaces.

Testing Tools: Spock, JUnit, Geb, Selenium.

Build Tools: Gradle, Maven.

Version Control: Git, GitLab, Bitbucket.

DevOps & CI/CD: Docker, Kubernetes, Jenkins, GitHub Actions.

Cloud Deployment: AWS Elastic Beanstalk, Azure App Services, Google Cloud Run.

When to Hire Grails Developers

You’re maintaining or modernizing a legacy application built on Grails or Groovy.

You need a JVM-based framework that integrates with Spring Boot for rapid development.

You’re building scalable web apps or APIs with strong domain-driven design principles.

You want a developer who can handle both backend logic and API integrations efficiently.

You need experts in migrating applications from Grails 3/4 to newer framework versions.

Best Practices for Hiring Grails Developers

Prioritize real-world Grails experience: Look for candidates with hands-on experience in large-scale Groovy/Grails projects.

Check JVM and Spring proficiency: Grails developers should also have strong foundations in Java and Spring Boot.

Review open-source contributions: Developers who contribute to the Grails ecosystem tend to stay updated with the latest improvements.

Assess problem-solving skills: Ensure candidates understand performance tuning, caching strategies, and async programming.

Test integration capabilities: Look for experience connecting Grails backends with React, Angular, or mobile apps via REST APIs.

Sample Interview Questions for Grails Developers

“What are the key advantages of using the Grails framework?”

“How does Grails integrate with Spring Boot and Hibernate?”

“Can you explain the Grails lifecycle and how controllers handle requests?”

“How does GORM simplify database operations compared to raw SQL or JPA?”

“What’s the process for migrating a Grails 3 application to Grails 5?”

“How do you implement authentication and authorization in Grails?”

Architecture & Optimization Tips

Use GORM dynamic finders to simplify query logic and reduce boilerplate code.

Adopt asynchronous controllers for performance in API-heavy applications.

Implement service layers to keep controllers lean and maintainable.

Leverage Gradle build scripts for modularized, efficient deployments.

Integrate with Redis caching to optimize database load and response times.

Hire Groovy Developers

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CTA

Looking to accelerate your web development with Grails experts?
Hire pre-vetted Grails developers from Lemon.io to build scalable, modern web applications using the power of Groovy and the flexibility of the Spring ecosystem.

Get Matched with Grails Developers

FAQ

What is the Grails framework used for?: Grails is a Groovy-based web framework built on top of Spring Boot that enables rapid development of web applications and REST APIs with minimal configuration.
Why choose Grails over traditional Java frameworks?: Grails combines the power of the JVM with Groovy’s concise syntax, significantly reducing boilerplate and speeding up application development compared to Java-only frameworks.
Is Grails suitable for large-scale enterprise applications?: Yes. Grails scales effectively due to its Spring Boot integration, modular architecture, and compatibility with JVM-based infrastructure.
Can Grails integrate with modern front-end frameworks?: Absolutely. Grails easily integrates with React, Angular, and Vue.js through RESTful APIs or GraphQL endpoints for dynamic web experiences.

Book a call with an expert so you can be sure in your hiring strategy

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Why hire Grails developers

A Grails developer keeps your business-critical app stable and brings it up to date.

Grails upgrades

Move through major versions with plugins and Spring beans mapped first.

GORM performance

Queries and transactions tuned so screens stop timing out.

New API endpoints

Modern APIs added to an older Grails app for new clients.

Spring Boot migration

A staged path to plain Spring Boot when Grails holds you back.

Case studies

Aerospace

The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.

Marc HorowitzCOO of SkyFi

Explore case

Telecommunications

We needed extra developers to clean off all these bugs so the company could skyrocket.

Conor MackenDirector of Engineering

Explore case

We needed extra AI engineers to keep our ambitious project running.

Mike LukimanFounding Senior Software Engineer at Everstar.ai

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Frequently asked questions

Experienced Grails programmers create web apps that run smoothly using the power of Java Virtual Machine. If you are looking for them, using services such as LinkedIn and GlassDoor will work to an extent. A sure-shot way to find such talent, however, involves finding specialized developer communities— join a few Slack groups for Grails, participate in discussions on Groovy, or just attend virtual and in-person events focusing on JVM.

Alternatively, try talent-matching platforms like Lemon.io to easily connect with skilled Grails programmers in 48 hours or less. All Software Engineers from our talent pull have already passed a vetting process: only 1% of applicants are able to complete it successfully.

With Lemon.io, Grails engineers (just like any specialized role) offer clients a paid trial of up to 20 hours, so you get the opportunity to collaborate and see if their expertise makes sense given what your specific project requires. In that time, you’ll be able to test the coder’s knowledge in the framework, observe their problem-solving strategies in practice, and confirm they vibe with everyone on your team.

Should it turn out that your Lemon.io developer isn’t a perfect fit, we have you covered with our replacement guarantee. We’ll get to work immediately to provide swift substitutes. Just one more fact – 99% of our clients are completely happy with their subscriptions, so a replacement is not needed.

Not as widespread as some of the newer frameworks, Grails still has a role to play in companies that are using the Java Virtual Machine (JVM) ecosystem for their web app needs. It is a common choice of technology in industries where Java is the underlying language; it influences spheres such as finance, government, and large enterprises — typically to create data-driven web applications with complex business logic.

This demand for Grails skills is often from companies with current (or about to be created) Grails applications, or organizations that understand the productivity gain as well as their natural integration into Java EE.

You can expect to receive a shortlist of carefully selected, experienced Grails developers within 48 hours. Once you’ve reviewed the list, you’ll be able to choose developers for further evaluation, with that part of the process fully under your control. If you need additional onboarding stages, add another few days. However, many of our clients successfully onboard their new Grails developer within just a few days of using Lemon.io.

We offer flexible engagement arrangements geared toward your needs (temporary, short-term retainers, or direct hiring opportunities are all available depending on the needs of your business model).

Every Grails engineer we introduce has passed through a highly technical screening procedure that covers profile evaluations, an extensive interview by our internal recruiters, & more.

Get ready to meet your shortlist quickly: the Lemon.io team aims to have candidates ready in 48 hours after understanding project needs.

We thoroughly check all the Grail developer candidates:

1. When submitting an application, the candidates undergo an automatic review of their skills based on several predefined metrics.
2. From there, recruiters take a closer look at every submitted CV, making sure those align with profiles hosted on third party services like LinkedIn.
3. For developers shortlisted from step two: during the screening call with our trusted recruiters the candidate undergoes a comprehensive exam on Coderbyte is conducted testing understanding in all core aspects —namely: Grails itself, the intricacies of Groovy & how those are linked back to related Java concepts.
4. The final round involves meeting with one of Lemon.io’s most experienced tech interviewers (this could involve in-depth technical discussions about past projects, hands-on challenges & live coding).

Companies using Java can benefit by hiring developers who know how to use Grails to make apps for the web quickly. Grails utilizes the nature of the Groovy language. This special knowledge simplifies building web-based solutions on a large scale – a good thing to have for any business.

It helps firms in financial tech, manufacturing & enterprise software development where applications with smart backend management are needed. Utilizing Grails enables developers to build faster & better while using to Java best-practices, making complex tasks easier for everyone on the team.

Grails is not the best fit?

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