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Trainee Junior Javascript Developer Jobs (NOW HIRING)

Concept Plus

Jr. React / JavaScript UI Developer

About the role Concept Plus is seeking a Junior React/JavaScript UI Developer to support an enterprise-scale application operating in secure client environments, including Denied, Degraded ...

Guru Schools

Junior Django Developer

New Johnsonville, TN · On-site

$60.40K - $78.40K/yr

Junior Django Developer Location: Chicago, Illinois Experience Level: 0-2 Years Work Arrangement ... Work with front-end technologies such as HTML, CSS, JavaScript, and modern frameworks like React or ...

Hadronts

Junior Java Developer

Seattle, WA

Junior Java Developer The Junior Java Developer will be responsible for designing, developing, and ... Must have some Basic Knowledge on Java, SQL, JSP, HTML and JavaScript. Motivated to research and ...

Latech Apps

Junior frontend developer

New York, NY · On-site +1

$73.30K - $95.20K/yr

Junior frontend developer We are looking for a motivated Junior Frontend Developer to join our ... Strong proficiency in HTML5, CSS3, and JavaScript (ES6+) . Basic understanding of version control ...

MANTECH

Junior Developer

Annapolis Junction, MD

$68.50K - $88.90K/yr

The Junior Developer is part of a dynamic development team, focusing on writing efficient and ... Understanding of core web technologies including HTML5, CSS3, and JavaScript to build functional ...

Collabera LLC

Junior Developer

Tampa, FL

$20 - $25/hr

Description: s/entry level candidates, Programming, Java, JSON, JavaScript, AI, Coding/Code, HTML ... An Excellent Opportunity for Junior Developer to work with "Fortune 100" clients in Tampa, FL Pay ...

MANTECH

Junior Developer

Annapolis Junction, MD

$68.50K - $88.90K/yr

The Junior Developer is part of a dynamic development team, focusing on writing efficient and ... Understanding of core web technologies including HTML5, CSS3, and JavaScript to build functional ...

MANTECH

Junior Developer

Annapolis Junction, MD

$68.50K - $88.90K/yr

The Junior Developer is part of a dynamic development team, focusing on writing efficient and ... Understanding of core web technologies including HTML5, CSS3, and JavaScript to build functional ...

StackandCo

\n \n \n \n \n Junior Java Developer 35K p\/a + benefits Java, AWS, Javascript \n \n \n \n \n \n We're looking for Junior Java Developers to join a globally renowned Fintech at their trendy Dublin ...

The Climate Registry

Jr. Software Developer

Los Angeles, CA · On-site

$72.20K - $93.70K/yr

Reporting - SSRS, Power BI * Front End - HTML, CSS, JavaScript, Bootstrap * Version Control - Git ... Junior Software Developer. Applications without a cover letter will not be considered. All complete ...

DMI Computer

Junior Software Developer

Washington, DC · On-site

$75.60K - $98.20K/yr

They are seeking a Junior Software Developer to support the design and development of enterprise ... NET • Build and maintain full-stack web solutions using JavaScript, JSON, HTML5, and CSS • ...

DMI

Junior Software Developer

Washington, DC · On-site

$75.60K - $98.20K/yr

They are seeking a Junior Software Developer to support the design and development of enterprise ... NET • Build and maintain full-stack web solutions using JavaScript, JSON, HTML5, and CSS • ...

Jobsbridge

Junior UI Developer II

Los Angeles, CA

$72.20K - $93.70K/yr

... bring junior developers to your level and skill Openness to learn new skills and techniques ... HTML, CSS, JavaScript) Experience with CSS pre-processors (less, SASS) Experience with one or more ...

HyperGen Inc.

Jr. Developer

Roanoke, VA

$65.70K - $85.40K/yr

As a Jr. Software Developer you will have the opportunity todevelop skills and work with technologies such as HTML, JavaScript, XML, SOAP,SOA and/or other Web development technologies as well as ...

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Trainee Junior Javascript Developer information

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$89K

$137.5K

How much do trainee junior javascript developer jobs pay per year?

As of May 30, 2026, the average yearly pay for trainee junior javascript developer in the United States is $88,976.00, according to ZipRecruiter salary data. Most workers in this role earn between $67,000.00 and $87,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Trainee Junior Javascript Developer, and why are they important?

To thrive as a Trainee Junior Javascript Developer, you need a solid understanding of JavaScript fundamentals, HTML, CSS, and a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, basic knowledge of frameworks such as React or Node.js, and exposure to development environments are typically required. Strong problem-solving skills, eagerness to learn, and effective communication set candidates apart in this role. These skills and qualities are crucial for adapting to fast-paced development teams and building a foundation for future growth in software engineering.

What types of projects can a Trainee Junior Javascript Developer expect to work on during their first year?

As a Trainee Junior Javascript Developer, you will typically start by assisting with smaller tasks such as bug fixes, writing unit tests, or implementing basic features under the guidance of senior developers. Over time, you'll gain exposure to collaborative projects like developing user interfaces, integrating APIs, or maintaining front-end codebases using frameworks such as React or Vue.js. These projects help you build technical skills while learning best practices in code review, version control, and agile workflows. Regular mentorship and code feedback are common, fostering rapid professional growth in a supportive team environment.

What does a Trainee Junior Javascript Developer do?

A Trainee Junior Javascript Developer is an entry-level professional who assists in building and maintaining web applications using JavaScript. They typically work under the guidance of more experienced developers, learning to write clean code, debug simple issues, and use frameworks like React or Node.js. This role is designed to help individuals develop foundational programming skills and gain practical experience in real-world software development projects.

What is the difference between Trainee Junior Javascript Developer vs Junior Web Developer?

AspectTrainee Junior Javascript DeveloperJunior Web Developer
Required CredentialsBasic coding knowledge, often in training or bootcampSome experience or formal education in web development
Work EnvironmentInternship or entry-level training programFull-time role in a development team
Employer UsageTraining programs, startups, or companies hiring entry-levelEstablished companies, agencies, or startups

In summary, a Trainee Junior Javascript Developer is typically in training or an internship, focusing on learning JavaScript basics, while a Junior Web Developer has more experience and handles broader web development tasks. Both roles serve as entry points but differ in experience level and responsibilities.

More about Trainee Junior Javascript Developer jobs
What cities are hiring for Trainee Junior Javascript Developer jobs? Cities with the most Trainee Junior Javascript Developer job openings:
What states have the most Trainee Junior Javascript Developer jobs? States with the most job openings for Trainee Junior Javascript Developer jobs include:
What job categories do people searching Trainee Junior Javascript Developer jobs look for? The top searched job categories for Trainee Junior Javascript Developer jobs are:
Trainee Junior Javascript Developer jobs near you
Infographic showing various Trainee Junior Javascript Developer job openings in the United States as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $88,976 per year, or $42.8 per hour.
Jr. React / JavaScript UI Developer

Jr. React / JavaScript UI Developer

Concept Plus

Remote

Full-time

Medical, Dental, Vision, Life, PTO

Posted 11 days ago

Job description

About Concept Plus
Concept Plus is a mission-focused technology solutions provider that transforms IT concepts into impactful solutions for federal agencies. Headquartered in Fairfax, VA, we bring the agility, responsiveness, and customer intimacy of a small business combined with the quality and infrastructure of a larger firm.
Recognized as an award-winning Oracle partner, we have delivered innovative solutions across Defense, Intelligence, Civilian, Health IT, and Tribal sectors. Our highly certified experts build systems that drive efficiency, accelerate modernization, and ensure mission outcomes with certainty.
We offer competitive pay, comprehensive health, dental, and vision insurance, paid life insurance, paid time off, 11 paid holidays, performance bonuses, tuition reimbursement, unlimited training, and the opportunity to thrive in a collaborative, flexible, and innovative environment.
For more information, visit www.conceptplus.com.
About the role
Concept Plus is seeking a Junior React/JavaScript UI Developer to support an enterprise-scale application operating in secure client environments, including Denied, Degraded, Intermittent, and Limited (DDIL) communication conditions. This role is ideal for developers with foundational experience in React, Vue, Node.js, Progressive Web Applications (PWAs), and Electron, who are eager to build modern UI capabilities under the mentorship of senior engineers. You will assist in developing, refining, and supporting user-facing features while contributing to Agile delivery, defect resolution, and integration activities across a multi-vendor environment.
What you'll do
  • Assist in producing and updating UI checklists, front-end development guides, and best practice documentation.
  • Develop and maintain UI components using React, including hooks, props, and functional components.
  • Contribute to Vue component development and support dual-framework environments as directed by senior team members.
  • Participate in building Progressive Web Applications (PWAs), including offline-first functionality aligned to DDIL requirements.
  • Assist in developing Electron-based desktop application features and cross-platform UI modules.
  • Implement basic Node.js scripts, UI build tooling and contribute to backend-for-frontend (BFF) patterns.
  • Support state management implementations using Redux, Zustand, or React Query, with guidance from senior staff.
  • Consume RESTful APIs and implement async workflows (Promises, async/await).
  • Write and maintain unit and integration tests using Jest, React Testing Library, or Cypress.
  • Develop responsive, accessible UI layouts using HTML5, CSS3, and modern CSS frameworks.
  • Collaborate with UX/HCD teams to implement designs, wireframes, and user flows into functional UI components.
  • Work within CI/CD pipelines using Git for version control (branching, PRs, code reviews).
  • Apply secure development practices aligned with Zero Trust principles and CI/CD security gating.
  • Support senior engineers in DevSecOps activities including pipeline testing and static/dynamic code scanning.
  • Assist with security documentation and tasks related to Authority to Operate (ATO) requirements within federal environments.
  • Participate in Agile ceremonies including stand-ups, sprint planning, reviews, and retrospectives.
  • Provide Tier 1-2 support for UI defects, enhancements, and integration feedback.
  • Collaborate with senior UI developers, backend developers, DevSecOps teams, and government stakeholders in a multi-vendor environment.

Required Qualifications
  • US Citizen
  • Ability to obtain and/or maintain a government clearance.
  • 1-3 years of professional front-end development experience, including hands-on React development.
  • Understanding of modern JavaScript (ES6+) and familiarity with Vue and/or Node.js.
  • Exposure to PWAs or offline-first design principles.
  • Experience writing basic unit or integration tests (Jest, Cypress, etc.).
  • Understanding of TypeScript fundamentals and desire to grow into full proficiency.
  • Familiarity with Git workflows and collaborative development practices.
  • Strong communication skills and willingness to learn from senior engineers.
  • Demonstrated ability to contribute in a fast-paced Agile environment.
  • Strong problem-solving mindset and attention to detail.

Preferred Qualifications
  • Experience with Electron or hybrid Web/Desktop application development.
  • Exposure to Cloud One, AWS GovCloud, or other secure cloud environments.
  • Experience supporting DoD, DHA, or OPMED systems such as OMDS, MedCOP, or MHS GENESIS.
  • Familiarity with micro frontend concepts.
  • Basic familiarity with GraphQL and Apollo Client.
  • Contributions to open-source projects or a public portfolio (GitHub, GitLab, etc.)

Concept Plus is an Equal Opportunity Employer. As such, we will give your application full consideration without regard to your race, color, religion, sex, age, national origin, disability, veteran status, sexual orientation, gender identity, or any other classification protected by federal, state, or local law.

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