Hire Karma developers

Automate frontend testing fast. Skilled Karma devs accelerate your QA cycles—onboard quickly within days.

Zain
Full-stack Web Developer
United States/(GMT -5:00)
Zain is a Senior Full-stack Engineer with strong expertise in React.js, Next.js, Node.js, and TypeScript. Zain brings deep knowledge of database design and performance optimization, along with solid hands-on experience in scalable backend architecture. He communicates clearly and has led teams in past roles. While his AWS experience is still growing, he is confident in deploying and managing services independently. Zain is best suited for complex full-stack projects where both frontend excellence and backend reliability are critical.
Experience
10 years
Availability
To be verified
ReactTypescriptNode.jsAWSNext.jsTailwind CSSCI/CDFastAPIPythonAIPyTorchBlockchainExpress.js.NET Core.NETSQL ServerASP.NET COREC#Docker ComposeNest.jsREST APISnowflakeNoSQLAmazon ECSAWS CloudFormationSeleniumPWA
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Daniel
Shopify Developer
United Kingdom/(GMT)
Daniel is a Senior Shopify developer with solid experience across the Shopify ecosystem, including apps, extensions, Liquid, and the Shopify GraphQL API. He brings solid React experience, building reliable frontend interfaces and integrating them with backend logic. He has delivered complete applications independently and has also contributed effectively within development teams. Daniel is known for clear communication, dependable ownership of tasks, and a practical approach to improving workflows and technical solutions.
Experience
5 years
Availability
To be verified
ShopifyReactNext.jsliquidNode.jsTypescriptAWSRemixJavaScriptAI agent developmentPostgreSQLExpress.jsSQLChart.jsTailwind CSSMaterial UIDockerPythonFastAPIVercelClaude CodeFirebase
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Daniel
Data Analyst
United Kingdom/(GMT)
Daniel is a senior Data Scientist and Data Analyst with over 7 years of hands-on experience in Python, Pandas, Tableau, and classical machine learning (scikit-learn, gradient boosting). He has led end-to-end analytics projects in manufacturing, supply chain, and fintech, building robust ETL pipelines and dashboards. Daniel demonstrates strong communication, stakeholder alignment, and ownership of production, consistently translating complex data into actionable insights. He would be an excellent addition to any team, bringing not only technical expertise but also a collaborative mindset, mentoring capabilities, and a proactive approach to problem-solving.
Experience
8 years
Availability
Full-time
PandasTableauSQLPythonScikit-learnSQL ServerGCPData visualizationMicrosoft AzureMachine learningAWSETLData WarehouseData ModelingPlotlyCloud ComputingData analysisData ScienceDockerAIAirflowDatabricksCronGPTClaude Code
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Viktor
Full-stack Web Developer
Bulgaria/(GMT +2:00)
Meet Viktor - a senior Full-Stack Developer focused on Front-end and Mobile developer with 5+ years of experience. His core skills are React, React Native, Node.js, C# .NET, Typescript and Javascript. Diligent, adaptive, communicative, and easily working within the team. Passionate about learning and creating new technologies for the future.
Experience
8 years
Availability
To be verified
KarmaReactNode.jsReact NativeNext.jsReact HooksPrismaExpress.jsTypescriptDockerGraphQLSocket.ioMySQLKnockout.jsASP.NETMicrosoft AzureFirebaseMicrosoft SQL ServerElasticSearch.NET CoreRabbitMQExpoTailwind CSSPostgreSQLSQL ServerSwiftKotlinOpenAI API
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Nauman
AI Agent Architect
Japan/(GMT +5:00)
Nauman is a senior AI/ML engineer with 8 years of experience, specializing in agentic system architecture and LLM-driven platforms. He has led the design and implementation of production-grade AI workflow engines, custom OCR models, and large-scale computer vision systems. His strengths include pragmatic architecture, end-to-end ownership, and outcome-focused stakeholder communication. English is fully workable for technical discussions.
Experience
8 years
Availability
Part-time
LLMPythonAI agent developmentAI agent orchestrationMulti-Agent SystemsAI telemetryT5BERTGCPDockerMLOpsDeep LearningMachine learning
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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
KarmaAngularNode.jsJavaScriptTypescriptReactNest.jsMongoDBNext.jsGoogle App EngineHTMLMaterial UIJasmineFirebaseBootstrapUnit testingMongooseODMPostgreSQLCSSGCPDockerNoSQLKafka
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Ivan
Front-end Web Developer
Ukraine/(GMT +2:00)
Ivan is a Senior Software Engineer with 7 years of experience building eye-catching user interfaces. As a front-end developer who utilizes React and Next.js, he excels in integrating sleek designs and engaging functionality into his projects. Having already ventured into the Web3 space, Ivan is well-suited to accelerate UI development. According to the results of this vetting process, Ivan might be considered a team player with strong communication skills!
Experience
9 years
Availability
Full-time
KarmaReactJavaScriptTypescriptNext.jsAngularDockerReduxSCSSGulpMochaJestGatsby.jsWebpackCypressEnzymeChaiHTMLCSSAngular.jsBootstrapNode.jsRedux ThunkRedux SagaStyled-componentsNetlifyGraphQLViteTailwind CSSSolanaFirebaseAlgoliaContext APIAnt DesignChakraUI
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Oleh
Full-stack Web Developer
Ukraine/(GMT +2:00)
Senior Full-Stack Developer & Team Lead with 10 years of experience in Python/Django, React, TypeScript, PostgreSQL, and AWS. Oleh boasts strong background building and scaling multi-tenant SaaS platforms, real-time systems, and enterprise solutions across fintech, education, logistics, CMS and cloud infrastructure. He led the development of a global backup & disaster recovery platform for 20,000+ businesses and a logistics platform with live tracking and route optimization.
Experience
11 years
Availability
Full-time
DjangoReactTypescriptPythonFastAPINode.jsPostgreSQLREST APIKubernetesElasticSearchAWSStripe APIMongoDBExpress.jsDockerMaterial UITailwind CSSDjango RESTCI/CDAmazon S3AWS LambdaOpenAI API
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Oleksandr
Full-stack Web Developer
Ukraine/(GMT +2:00)
Oleksandr is an expert in Ruby/Ruby on Rails, React, and Vue, with more than 9 years of commercial experience. His team-leading background and profile education complement his development skills. Projects in SaaS, real estate, and NGO are only part of Oleksandr's accomplishments. Great English, soft skills, and a positive attitude make him a valuable addition to any team.
Experience
11 years
Availability
To be verified
KarmaRubyJavaScriptVue.jsReactRSpecErlangElasticSearchCucumberStimulusCapybaraPostgreSQLAngularMySQLRuby on RailsDockerKubernetesSidekiqOAuthAWSTailwind CSS
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Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.

Brian DeSpainCEO, 10X ERP

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

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

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Match in a 24 hours

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Your developer starts with a project—we deal with a contract, monthly payouts, and what not

Hire after 1–2 interviews

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Why hire Karma developers through our platform?

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Every one of our 1300+ senior engineers has passed through our four-step vetting process, covering everything from soft to hard skills.

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What you should know about modern Karma devs

by Yuliia Vovk

Recruiter at Lemon.io

Verified Expert

Hiring Guide: How to Hire Karma Developers

Karma is a powerful JavaScript test runner designed to make automated testing for front-end applications fast, reliable, and developer-friendly. Hiring Karma developers through Lemon.io ensures your web applications are rigorously tested for performance, functionality, and stability. These experts streamline testing processes, integrate CI/CD pipelines, and improve overall software quality through automated workflows.

Why hire Karma developers?

Testing is the backbone of sustainable front-end development. Karma developers specialize in configuring test environments that run smoothly across multiple browsers, ensuring your application performs consistently. Whether you’re developing large-scale enterprise systems or agile front-end projects, Karma developers help eliminate bugs early in the development cycle and maintain high-quality standards through continuous integration.

Define your Karma project goals

Before you begin hiring, identify your project’s testing requirements and scope. Common goals include:

Automated testing setup: Implementing Karma to run unit and integration tests automatically during development and deployment.

Cross-browser testing: Ensuring consistent performance across browsers like Chrome, Safari, Firefox, and Edge.

Continuous integration: Integrating Karma tests into CI/CD pipelines with Jenkins, GitHub Actions, or CircleCI.

Framework integration: Configuring Karma to work seamlessly with Angular, React, or Vue testing frameworks such as Jasmine and Mocha.

Code coverage tracking: Setting up tools like Istanbul or NYC to monitor test completeness and maintain coverage benchmarks.

Core technical skills to look for in Karma developers

JavaScript testing frameworks: Proficiency in Jasmine, Mocha, Chai, and Jest for writing and managing tests.

Karma configuration: Ability to configure Karma test runners, define preprocessors, and handle reporters for debugging.

Front-end frameworks: Knowledge of Angular, React, or Vue.js applications integrated with Karma test environments.

Build tools and bundlers: Familiarity with Webpack, Gulp, or Grunt for managing builds and test dependencies.

Continuous integration systems: Experience connecting Karma to CI/CD platforms for automated testing workflows.

Code coverage and quality assurance: Understanding of coverage tools and static code analysis for high-quality releases.

Debugging and reporting: Skilled in diagnosing test failures and optimizing execution speed.

Experience level guidance

Junior (0–2 years): Can assist in writing unit tests and running pre-configured Karma setups under supervision.

Mid-level (2–5 years): Experienced in configuring custom Karma test environments, integrating multiple frameworks, and working with CI pipelines.

Senior (5+ years): Expert in architecting scalable testing systems, optimizing performance, and leading quality assurance strategies for large front-end codebases.

Common use cases for Karma development

Unit testing for Angular, React, and Vue applications.

Integration testing for large-scale JavaScript projects.

Cross-browser compatibility verification and debugging.

Automated CI/CD testing pipelines for front-end deployments.

Regression testing to ensure code stability during updates.

How to evaluate Karma developers

Portfolio review: Evaluate prior experience with JavaScript testing frameworks and Karma configuration complexity.

Technical interview: Assess understanding of test-driven development (TDD), testing frameworks, and automation tools.

Practical assignment: Ask the candidate to set up and run a Karma test environment for a small JavaScript project.

Integration experience: Review familiarity with CI/CD integrations and cloud-based testing setups.

Debugging strategy: Analyze how the candidate approaches test failures, optimizes execution, and manages flaky tests.

Budget and engagement models

The cost of hiring Karma developers varies depending on project size and the developer’s experience. Common engagement models include:

Project-based: Suitable for one-time test setup or framework integration projects.

Hourly engagements: Ideal for ongoing maintenance, troubleshooting, and test suite optimization.

Dedicated developer: Best for continuous integration, regression testing, and long-term QA automation.

Rates typically range from $60–$150/hour, depending on skill level and CI/CD integration complexity.

Red flags to avoid

Limited knowledge of JavaScript testing frameworks or CI/CD automation.

Inability to configure Karma for multi-browser testing or coverage tracking.

No experience with test reporting or debugging optimization.

Dependence on manual testing instead of automation-driven approaches.

Karma developer job description template

Title: Karma Developer / Front-End Test Automation Engineer

About the project: We’re building a robust front-end application that requires comprehensive automated testing. The developer will be responsible for configuring Karma test environments, ensuring full coverage, and maintaining quality through automated CI/CD testing workflows.

Responsibilities:

Configure and maintain Karma test environments integrated with existing front-end frameworks.

Develop unit and integration tests using Jasmine or Mocha.

Implement continuous testing within CI/CD pipelines.

Monitor coverage and ensure stable, repeatable test results.

Must-have skills: Karma, Jasmine, Mocha, Webpack, CI/CD integration, and front-end testing experience.

Nice-to-have: Knowledge of Dockerized testing environments and performance optimization.

QA Engineer Job Description – for professionals ensuring functional and usability testing across platforms.

Frontend Developer Job Description – for engineers building front-end architectures integrated with testing frameworks.

Angular Developer Job Description – for developers familiar with Angular’s native Karma-based testing ecosystem.

DevOps Engineer Job Description – for experts integrating test runners with automated pipelines.

Call to action

Hire expert Karma developers through Lemon.io – connect with pre-vetted JavaScript testing specialists who can strengthen your QA strategy, integrate testing automation, and ensure flawless product performance.

FAQ: Hiring Karma Developers

What does a Karma developer do?

A Karma developer configures and maintains JavaScript testing environments using Karma test runner. They automate tests, integrate them with CI/CD pipelines, and ensure consistent performance across browsers and frameworks.

How much does it cost to hire a Karma developer?

The cost to hire a Karma developer typically ranges from $60 to $150 per hour, depending on their experience with test automation, front-end frameworks, and continuous integration systems.

Which skills should a Karma developer have?

A skilled Karma developer should know JavaScript testing frameworks (Jasmine, Mocha, Chai), front-end technologies (React, Angular, Vue), and CI/CD integrations. Knowledge of code coverage tools and debugging optimization is also valuable.

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Why hire Karma

Over 6500 companies use Karma as their main framework, including giants like Google, Amazon and Lyft.

High-quality web apps

Karma's modular approach lets devs reuse components, so they can seamlessly manage app complexity.

Faster development process

Karma's architecture and a vast library of pre-built components speed up development, so you can get to market sooner.

Enjoyable user experience

From smooth, responsive interfaces to reduced loading times, devs can use Karma to boost usability.

Scaling made easy

Karma's modular, component-based architecture makes it easy to scale applications as traffic grows.

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

Explore case

Frequently asked questions

To find Karma developers, go to professional networking sites such as LinkedIn and connect with those who have experience in JavaScript testing frameworks. Participate in online communities related to the area or forum sites like Stack Overflow or Karma’s Google Group, or use freelance platforms. Networking at tech meetups and conferences covering web development and testing may also bring a chance to meet and recruit developers skilled in Karma. Yet, if you want to save time from detailed job descriptions, application screening, candidate interviews, and competency checking, consider Lemon.io. We can connect you with a pre-vetted Karma developer within 48 hours.

Lemon.io offers a no-risk 20-hour trial period for onboarding Karma developers. This is a paid trial, which you can use before committing to a subscription or direct hire. This way, you can be sure the developer will get the work done and fit nicely within your current team. If the chosen candidate does not meet your expectations or is not a good fit for the team, we will find you another specialist. However, we can assure you that replacement cases are extremely rare and serve only as an option we mention to clients.

Yes, there is a huge demand for Karma developers; testing plays an extremely critical role in modern web application development. Karma happens to be among the most common JavaScript test runners in use today and has been developed by the AngularJS Team for running unit tests on many browsers. It allows easy, continuous integration and testing in many environments, which is key to ensuring quality and reliability in code. From technology industries to finance and e-commerce, the web industries require high performance with specified functionality that they usually meet with the implementation of Karma in their web applications. As complex web applications become more complex, the demand for proficient developers who know how to use and develop professional levels of test frameworks increases.

Our matching process is super fast and efficient in the business. You will see the best hand-picked Lottie candidates within two days. We will set up several calls for you and the candidates you like the most. Our trusted recruiters and technical experts previously have managed a rigorous candidate selection process, including comprehensive profile, soft skills, and technical abilities checks. We onboard 1% of all applicants, so you can be sure you’ll get the best candidates quickly and hassle-free.

Lemon.io guarantees a lightning-fast matching process. We will connect you with the perfectly matched candidates from our pool of top 1% vetted talent for your technology stack and expectations. They have undergone three extensive steps: a profile review, soft skills, and hard skills checks. We also offer you the option of trying any developer for a no-risk 20-hour paid trial. If you’re happy with the results, simply subscribe and continue. Alternatively, hire a developer directly to your team. If there are any issues, which is highly unlikely, we will find you another specialist.

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