Main Responsibilities and Required Skills for Javascript Developer

A Javascript developer is a software engineer who specializes in creating and maintaining web applications using Javascript programming language. Javascript is a popular programming language that can be used to make websites more interactive, and it is one of the most widely-used scripting languages in use today. In this blog post we describe the primary responsibilities and the most in-demand hard and soft skills for Javascript developers.

Get market insights and compare skills for other jobs here.

Main Responsibilities of Javascript Developer

The following list describes the typical responsibilities of a Javascript Developer:

Add

Add new functionality to existing Ruby on Rails and JavaScript (front end) applications.
Add to the shared UI component library and writing functional demos to demonstrate behaviour.

Advocate

Advocate for implementing unit and functional tests.

Analyze

Analyze, design and develop tests.
Analyze, design, develop, test and deploy phases of development projects.
Analyze high level system specifications, business requirements and / or use cases.

Architect

Architect and implement APIs with GraphQL.
Architect efficient and reusable front-end systems that drive complex web applications.
Architect solutions for the best performance, security and reliability.

Assess

Assess end user issues and identified solutions.
Assess and improve game play mechanics.

Assist

Assist and hold others accountable for their commitments.
Assist in growing team knowledge and experience.
Assist less experienced technologists in all areas of maintenance and communication.
Assist team with resolving technical complexities involved in realizing story work.

Author

Author and document reusable components inside a React application.

Automate

Automate manual release activities.
Automate tasks through appropriate tools and scripting.

Build

Build and maintain APIs for our customers' existing data to the cloud.
Build and maintain market surveillance tools in Java and Vue.js.
Build and maintain positive working relationships with store personnel.
Build and ship high-quality code as part of an agile team.
Build and test the code in different staging environments.
Build API's that will integrate with all majors ERP, CRM and other systems.
Build backend services in Scala / Java.
Build Java Spring and Reactjs web application.
Build modular and reusable components and libraries.
Build new APIs and help design infrastructure for applications that are entirely cloud hosted.
Build new APIs and help design infrastructure for applications that are entirely cloud-hosted.
Build out client side SDK's.
Build reusable code and libraries for future use.
Build reusable code and libraries for future use adhering to best practices.
Build server-side services and API endpoints using Node and Typescript.
Built reusable components and Integrate front-end & back-end.

Champion

Champion and enable software development processes and code quality standards.
Champion TDD / BDD Software development.
Champion technical decisions and implement elegant solutions to the tasks at hand.

Code

Code review for technical accuracy, standards, and functional compliance to the requirements.
Code, test and implement back end solutions to meet business needs.
Code, test and implement full stack solutions to meet business needs.

Collaborate

Collaborate closely with product management, QA and other development team members.
Collaborate cross-functionally with business users, data scientists and project managers.
Collaborate on UX Engineering to build customer experience.
Collaborate within and across teams to find and implement new technologies and solutions.
Collaborate with internal teams and vendors to fix and improve products.
Collaborate with other developers.
Collaborate with other team members and stakeholders.
Collaborate with other team members through pair programming and code reviews.
Collaborate with other team members to flesh out technical requirements.
Collaborate with teammates on the best approaches for problem solving.
Collaborate on API design and code architecture.
Collaborate with cross-functional team members on features, design and implementation.
Collaborate with other teams.
Collaborate with the wider engineering team to develop and enhance the overall product lifecycle.

Communicate

Communicate changes and impact to those affected.
Communicate clearly + effectively w / business customers co-workers to define problem sets + sols.
Communicate clearly with colleagues and Team Leaders on any production related issues.
Communicate issues clearly and effectively.
Communicate, lead, and pull together diverse stakeholders to bring projects through to completion.
Communicate with clients and co-workers to define solution requirements and software specification.
Communicate with client UI team regarding UI, UX and other visual requirements.

Contribute

Contribute ideas to improvement of the platform from a technology and product perspective.
Contribute in a highly collaborative, team-first environment and communicate effectively.
Contribute to a centralized design system.
Contribute to an agile focused pod.
Contribute to existing test suites (integration, regression, performance).
Contribute to improving team workflow to streamline day to day activities.
Contribute to long term health of the codebase, architecture and processes of the JS guild.
Contribute to story refinement / defining requirements.
Contribute to the development and maintenance of the technical roadmap.
Contribute clear and maintainable code to a shared codebase.
Contribute to company-wide component library and other shared resources.

Coordinate

Coordinate activities of development team.
Coordinate with backend developers and devops engineers to ensure whole project success.
Coordinate with leadership to help guide and communicate effectively amongst the team.
Coordinate with the rest of the team working on different layers of the infrastructure.

Create

Create and follow Test Plans and Verifications.
Create cartridges to add reusable fonctionality to a site.
Create custom forms, fields, and saved searches.
Create documentation on processes and application configuration.
Create effectively tested, re-usable, and efficient JavaScript code.
Create intuitive, robust and reusable user interfaces using modern frameworks.
Create, maintains, and / or enhances system documentation as needed.
Create reusable code using ISML templates.
Create reusable mobile-first user interfaces using frameworks such as React.

Debug

Debug and fix problems in the existing code.

Deliver

Deliver high quality code in a reasonable timeframe.
Deliver high quality JavaScript code with emphasis on best practices.
Deliver on commitments or advises on advance of potential issues.

Deploy

Deploy new features to production and overhaul existing features.

Design

Design and build complex, high-performance web applications.
Design and build high-performance web applications.
Design and develop feature tests for desktop, mobile web, Smart TV applications.
Design and develop innovative web frontend applications and components.
Design and develop software for our customer service team and external customers.
Design and implement UI components in different frameworks.
Design and write well-structure, easily maintainable, well-documented code.
Design database models / schemas for new applications or features.
Design data models for both relational + non-relational databases.

Develop

Develop and collaborate to develop frontend systems.
Develop and deliver complex software requirements to accomplish business goals.
Develop and enhance our main front end platform (React / ExtJS / DWR / Java).
Develop and implement features and functionality for our web applications with a focus on front-end.
Develop and maintain game related backend services.
Develop and maintain high-performance API-first applications written in Vue.js.
Develop and optimize high performance desktop.
Develop approaches to pay off tech debt and align the technology with the needs of the business.
Develop automated tests, monitor the results, and reports software defects.
Developer training of some kind (boot-camp, college, university, etc.).
Develop functional web applications based on usability and appeal.
Develop high-quality software design and architecture.
Develop, implement and maintain front end projects with HTML, (S) CSS, JS, TS.
Develop, implement and maintain web projects with PHP, HTML, (S) CSS, JS.
Develop in the JavaScript stack, specializing in Node.js and React.
Develop Keeper Admin Console features.
Develop mission critical user experiences.
Develop modular video delivery applications for desktop.
Develop new and redesign existing features of our products.
Develop new features for the CRM while maintaining the platform.
Develop new functionalities using Node.js, React, ElasticSearch, and Kibana.
Develop new user-facing features.
Develop new user-facing features for HTML5 video element.
Develop prototypes, frameworks / shells or specialized utilities for the development team.
Develop responsive and elegant cross-browser and cross-device websites.
Develop RESTful web API' s and unit tests.
Develop software for our large-scale web-application with a focus on client-side code.
Develop software solutions by studying information needs.
Develop standard operating procedures.
Develop test automation scripts to support and enhance software as per product specifications.
Develop test documentation required by the software development process.
Develop the back end web application in node.js and the front end in Javascript & React.
Develop the UX user experience.
Develop tools and applications by producing clean, efficient code.
Develop, update, and implement the features and interfaces of user-facing components.
Develop web / software applications as defined by customer requirements.

Document

Document development phases and monitor systems.
Document application changes and develop updates.
Document performed tasks per the required standard.

Drive

Drive improvements and innovations in development.
Drive initiatives to adopt new processes and adhere to existing standards.
Drive innovation, design, development, testing and support to all your work.

Encourage

Encourage sound architectural practices and general improvements with code reviews.

Ensure

Ensure all team members are informed of project activities.
Ensure assigned project tasks are completed in a timely manner and project milestone dates are met.
Ensure software development meets standards for programming, design, performance, and security.
Ensure software is up-to-date with latest technologies.
Ensure that software is developed to meet functional, non-functional, and compliance requirements.
Ensure the reliability and scalability of developed applications.
Ensure the technical feasibility of UI / UX designs.

Establish

Establish and promote design guidelines, best practices and standards.
Establish and promote design guidelines, best practices, and standards.
Establish internal and outgoing system / technical support for NetSuite end users.

Follow

Follow company core values.
Follow and support change management practices and internal controls standards.
Follow through with options and recommendations.

Gather

Gather and address technical and design requirements.
Gather information and feedback from end users to understand and develop project requirements.

Help

Help administer and configure NetSuite components.
Help build a culture of good engineering processes and practices.
Help control project scope.
Help define, create, test, and execute operations procedures.
Help define, create, test, execute, and document operations procedures.
Help document current and future configuration processes and policies.
Help identify and implement Software Developer Best practices.
Help our customers to design and create cloud computing architectures.

Highlight

Highlight areas of improvement, and act on them proactively.
Highlight areas of improvement within the team and the codebase, and act on them proactively.

Identify

Identify and recommend areas for improvement in planning, design, development, and testing.
Identify and optimize applications for scalability and performance.
Identify and resolve performance and scalability issues.
Identify any bugs and solve as necessary.
Identify, prioritize and execute tasks in the software development life cycle.
Identify / troubleshoot application code-related issues.

Implement

Implement and maintain both unit tests and automated functional test coverage.
Implement business sol meeting mod request req'ts for all mods or new prods.
Implement effective solutions for major clients.

Integrate

Integrate UI features based on client side as well as server side rendering.
Integrate UI prototypes with real backend APIs to make apps production-ready and shippable.
Integrate visualization controls with platforms like SAP BI using proprietary SDKs.
Integrating software components into a fully functional software system.
Integrating third party applications with the NetSuite ERP System (e.g. Salesforce).

Interact with

Interact with back-end team to support and implement new features.

Investigate

Investigate problem areas and come out with solutions.
Investigating, learning and applying new technologies and processes.

Keep

Keep on top of emerging technologies in the front end world.
Keep the code clean and review your team members' designs if needed.

Maintain

Maintain an awareness of other projects and their possible effect on ongoing projects.
Maintain and enhance applications built with Cloud First design deployed in AWS.
Maintain and improve existing code base.
Maintain and improve existing codebases.
Maintain and improve integrations with both internal and third party systems.
Maintain Bug Database in DevTrack.
Maintain Bug Database in JIRA.
Maintain code quality and best practices across the stack.
Maintain code quality through unit testing.
Maintain compliance with all Data Privacy Policies and Procedures.
Maintain list of established 3** response codes, find and correct redirect chains.
Maintain strong coding, compliance, and security standards.
Maintain / support customer applications.
Maintain the cloud infrastructure and ensure maximum efficiency, reliability and scalability.
Maintain the Quality Assurance pipeline from discovery through a fix to regression verification.

Manage

Manage and control a vast IoT network across farmers' fields.
Manage builds using Webpack.
Manage issues / bug fixes and releases.
Manage, profiles and roles, customization of objects, fields, record types, page layout, validation.
Manage pull requests and deliver feedback to other team members.
Manage time.
Manage pull requests and delivering feedback to other team members.
Manage tasks and timelines of a development team, within a commercial environment.

Mentor

Mentor and coach other developers of the team.
Mentor and coach other members of the team.
Mentor extensively on both the technical and process aspects of our development work.
Mentors other Software Engineers and coaches team on CI-CD practices and automating tool stack.

Optimize

Optimize builds and deployments with the goal of continuing to improve our CI / CD infrastructure.
Optimize code quality, automate, and integrate data transfer.
Optimize modules for maximum speed and scalability.

Oversee

Oversee Critical Rendering path / lazy loading, DOM rending, javascript framework rendering.

Own

Own the back-end of our cloud based platform.
Own the client-facing UI of the product.

Participate in

Participate in all phases of the software development cycle as part of a multi-functional Scrum team.
Participate in a multitude of large-scale projects.
Participate in code reviews.
Participate in code reviews and project reviews.
Participate in code reviews and technical brainstorming sessions.
Participate in code reviews, sprint planning and product direction.
Participate in conversations about the design and architecture of the platform.
Participate in design reviews and provide input to the design recommendations.
Participate in open source projects – we would love to see your GitHub projects.
Participate in product and technical direction / design discussions.
Participate in production systems maintenance and support.
Participate in sprint backlog planning and size user stories.
Participate in technical discussions and project planning activities.
Participate in testing and quality control activities as per the testing strategy.
Participate in the architecture of a scalable and robust software deployment model.
Participate in the design of our core products.
Participate in the entire application lifecycle, focusing on coding and debugging.
Participate in the planning of major projects.
Participate in the redesign of the cross-sectional architecture of digital channels.
Participate on a team developing user interfaces for a browser based solution.
Participating in design and code reviews.

Perform

Perform application upgrades on an as-needed basis.
Perform a variety of activities to maintain the ability to manage daily workflow and task completion.
Perform code walkthroughs and testing.
Perform complex system analysis and trouble shooting of problems and recommends solutions.
Perform product design, modeling, implementation, and testing.
Perform release preview testing to ensure compatibility.
Perform reviews and integration testing to assure quality of project development efforts.
Perform spike / proof of concept as necessary to mitigate risk or implement new ideas.
Perform validation and verification testing.

Provide

Provide advanced coding expertise to mitigate high risk features or technical challenges.
Provide APIs to support desktop and mobile client applications.
Provide feedback on PRDs for new features in our collaborative design process.
Provide forward-looking recommendations by reviewing business requirements and application design.
Provide guidance and support to other team members.
Provide input for contingency and disaster recovery plans.
Provide on-going post implementation support to optimize user adoption.
Provide Qualitative feedback regarding the product.
Provide technical guidance / mentoring to development team.
Provide technical leadership within the project team.
Provide training and support to internal teams.
Provide vendor system support.
Provide work assessments and estimates in a timely manner.

Recommend

Recommend new ideas for our customers and internal processes.

Research

Research and analyze business and system needs.
Research and prototype new technologies as appropriate.
Research & Development – Application Development Technologies and Tools.
Research new technologies and approaches to solve problems and improve existing systems.
Research tells us that some candidates are put off from applying because they cannot tick every box.

Resolve

Resolve bugs by examining log output and testing.
Resolves complex issues within own area of expertise and supports others in resolving issues.
Resolve system issues and defects as needed.

Review

Review and give feedback on other JS peers code.
Review features implemented by other developers on the team.
Review application requirements and interface designs.
Review of documents, designs, and test cases.

Solve

Solve challenges related to drawing and layouts.
Solve challenges related to drawing (HTML5, WebGL) and layouts.

Suggest

Suggest on interfaces and other possible improvements that might be done.

Support

Support a positive team working environment.
Support continuous improvement by staying up-to-date on front-end technology.
Support Continuous Integration tasks for our pipeline.
Supporting, mentoring and guiding engineers.
Support Quality Assurance testing on web / software applications.
Support Sprint activities.
Support the development and implementation of the modeled solution.

Take

Take a lead role in the modernisation of our brand facing platform.
Take ownership of the Wwise Launcher architecture.
Take part in planning & developing great products using cutting-edge technologies.
Take accountability for team deliverables and overall team success.

Test

Test and review code for technical accuracy, standards, and functional compliance to the design.
Test new and existing product feature inline with incremental releases.

Translate

Translate test plans to TestRail.
Translating designs and wireframes into high quality code.

Troubleshoot

Troubleshoot and debug applications.
Troubleshooting and finding root causes and solutions for technical problems.
Troubleshooting, debugging and upgrading existing system.
Troubleshooting interface software and debugging application code.
Troubleshoot, investigate, and implement solutions to identifies issues.

Understand

Understand and scope where front / back end meets and is handed off to other technical layers.
Understand and identify system dependencies.
Understand core concepts of relational databases and NO SQL database.
Understand the value of documentation and maintaining a pattern library.

Use

Use a git / gerrit / github workflow for code versioning and review.
Use Linux on Vagrant and Mac OS X for local WordPress development.

Work with

Work across the full stack of application layers.
Work alongside your team to keep the bakery clean, and contribute to a great customer experience.
Work closely with analysts to share system design knowledge and support effective automated testing.
Work closely with architects within srchitect community in SAP CX Integration.
Work closely with central video engineering teams for high performance video streaming.
Work closely with developers, QAs, Business Analyst and release managements.
Work closely with other engineers and product management teams to meet fixed deadlines.
Work closely with partners to debug and deploy applications.
Work closely with the back-end development team.
Work collaboratively with a team in an Agile environment.
Work directly with UI developers.
Worked closely with business users to gather and understand requirements.
Work from home or an office location with convenient transit and bike paths.
Work in accordance with agile development models (Scrum, Agile).
Work in a fast paste startup / scaleup environment.
Work in all phases of software development.
Work in an agile team of developers to deliver quality software.
Work in developing the architecture and improvement of systems and services across the Company.
Working closely with our Lead Designer to ensure solutions are fit for our customers.
Working collaboratively with the entire development team.
Working on intuitive visual design and interfaces.
Working on new features from the concept stage to the release and support stage.
Working with a team to design, code, and build.
Work on all aspects of software development life cycle following agile methodologies.
Work with a small, focused team to design / develop new features and releases.
Work with DevOps automation approaches involving GitHub / GitLab.
Work with geographically distributed teams seamlessly.
Work within a cross functional team aimed at delivering high valued solutions.
Work within an agile and cross functional team aimed at delivering a quality product.
Work with incident management software to investigate and resolve issues with various applications.
Work with infrastructure groups to build effective software stacks.
Work within sandbox environments and follow a release schedule, to maintain system integrity.
Work with our UX and design teams to help implement user interfaces.
Work with partners and internal departments to ensure a high level of support.
Work with product and design to create unique experiences for our brand partnerships.
Work with Product to triage and transform your findings into actionable dev tasks.
Work with React, Redux, Node, AWS, Typescript.
Work with the team to take ownership of the product.
Work with various stakeholders and contribute to the definition of the product roadmap.

Write

Write and maintain APIs using GraphQL and REST.
Write and maintain APIs using GraphQL and REST using Node.
Write and maintain automated tests to retain software quality.
Write and maintain UIs in the browser using modern web technologies.
Write automated software unit and integration tests.
Write clean code to develop functional software components.
Write clean, maintainable, testable code.
Write code like everyone's watching.
Write, edit and test software code.
Write, modify, review, optimize and debug code.
Write, modify, review, optimize and debug code on a full stack web application.
Write new software in PHP, Javascript, + Node.
Write optimal SQL queries good performance for database operations.
Write reusable and extendable code and become a key contributor of the core platform.
Write Semantic HTML5 from Photoshop Images / Invision Mockups.
Write technical documentation.
Write tests to ensure the product meets the required quality standards.
Write Unit / Integration tests for Front-end components & functions.
Write unit tests and think in a test-driven way.
Write Unit / UI tests for all code developed.
Write well structured code and deliver software.
Write REST or GraphQL APIs.
Write unit, integration and e2e tests for your code.

Most In-demand Hard Skills

The following list describes the most required technical skills of a Javascript Developer:

Javascript
Reactjs
Angularjs
CSS
Node.js
HTML
GIT
Typescript
HTML5
AWS
Java
Webpack
Redux
SQL
Node
VUE
ES6
Docker
Bootstrap
Web Development
Vue.Js
Azure
CSS3
Design
Jest
Json
Agile
Express
SCSS
GCP
SASS
C#
Jenkins
Jira
Graphql
Babel
Devops
Mongodb
Python
React Native
Jquery
Kubernetes
Agile Environment
Api Design
Deployment
Nodejs
Software Engineering
Ajax

Most In-demand Soft Skills

The following list describes the most required soft skills of a Javascript Developer:

Written and oral communication skills
Problem-solving attitude
Analytical ability
Attention to detail
Team player
Interpersonal skills
Detail-oriented
Adhere to deadlines
Willingness to learn
Bilingualism
Collaborative
Self-starter
Work independently with little direction
Positive attitude
Seek out innovative solutions
Critical thinker
Flexible
Time-management
Ability to manage multiple tasks
Collaborative problem solving
Commitment
Organizational capacity
Technical
Bilingue
Entrepreneurial mindset
Highly enthusiastic team player
Therefore
Work ethic
Because when learning actually works
Interpersonnelles
People
Prioritizing them appropriately
Self-motivated
Troubleshooting skills
Work in a fast-paced environment
Assist others
Enthusiastic
Prioritize your own workload
Self-directed
Work and collaborate with a variety of customers
Work with collaboratively with others
Work with other developers