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Javascript Developer Jobs in Hartford, CT (NOW HIRING)

Elite WorkForce Inc

Salesforce Developer at CT

Hartford, CT · On-site

$56 - $74.25/hr

Salesforce Developer Location: Hartford, Connecticut (06106) Client: State of Connecticut Duration ... NET OOP and SOA, JavaScript frameworks, and SQL. * Proficiency in full-stack web development and ...

InstantServe LLC

Senior Salesforce Developer

Hartford, CT · On-site

$126.60K - $154.80K/yr

Senior Salesforce Developer Location: Hartford, CT, 06106 | Hybrid (1 day/week or 2 days/2 weeks ... Required Skills: .NET Framework, C#, Web & Windows Services - Expert (10+ yrs) JavaScript & JS ...

CPIM Group

JAVA DEVELOPER

Rocky Hill, CT

$48.50 - $63/hr

We are looking for Java Developers with experience in building high-performing, scalable ... other JavaScript libraries Oracle or any other databases and SQL scripting Advanced English ...

CPIM do Brazil LTDA

JAVA DEVELOPER

Rocky Hill, CT

$48.50 - $63/hr

We are looking for Java Developers with experience in building high-performing, scalable ... Angular or react or any other JavaScript libraries * Oracle or any other databases and SQL ...

Deegit Inc

SharePoint developer

East Hartford, CT · On-site

$48.25 - $63/hr

Sharepoint Developer Location : East Hartford , CT, USA Duration : 6+Months work experience : 3-5 ... in HTML5 , JavaScript , JQuery • Good communication and writing skills • 2-3 years of ...

InstantServe LLC

Senior Salesforce Developer

Hartford, CT · Hybrid

$126.60K - $154.80K/yr

Senior Salesforce Developer Location: Hartford, CT, 06106 | Hybrid (1 day/week or 2 days/2 weeks ... Required Skills: .NET Framework, C#, Web & Windows Services - Expert (10+ yrs) JavaScript & JS ...

CPIM Group

JAVA DEVELOPER

Rocky Hill, CT

$48.50 - $63/hr

We are looking for Java Developers with experience in building high-performing, scalable ... other JavaScript libraries Oracle or any other databases and SQL scripting Advanced English ...

Sensiple Inc.

Python Developer with Azure

Hartford, CT

$50.75 - $69.75/hr

As a Python Developer you will be part of the core development team focused on Python programming ... in JavaScript TypeScript HTML5 and CSS3 Experience consuming APIs and integrating with data ...

Robert Half

Application Developer

Torrington, CT · On-site

$120K - $150K/yr

NET, HTML, CSS, and JavaScript. • Experience building and consuming APIs, with familiarity using ... AI technologies in software engineering. • Strong communication, troubleshooting, and ...

SonSoft

Java Developer with AJAX

Windsor, CT · On-site

$50.75 - $65.50/hr

Java Developer With Ajax Sonsoft, Inc. is a USA based corporation duly organized under the laws of ... At least 4 years' experience building Javascript applications with BackboneJS, as well as ...

InstantServe LLC

.NET Developer

Hartford, CT · On-site

$48.75 - $64.25/hr

.Net Developer Hartford,CT Req id- 61203 USC/GC Hybrid role Candidate must be able to come in the ... In-Depth expertise with HTML5, CSS3, Javascript, and Javascript Libraries. * Experience with ASP.

Blue Prism Group

Salesforce Developer

Hartford, CT · On-site +1

$56 - $74.25/hr

Salesforce Developer Location(s): New York / North Carolina / Georgia / Florida / Connecticut ... Proven expertise in Apex, Visualforce, Lightning Web Components (LWC), and JavaScript. * Strong ...

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All JobsJavascript Developer JobsJavascript Developer Jobs in Hartford, CT

Javascript Developer information

See Hartford, CT salary details

$29.8K

$107.5K

$170.5K

How much do javascript developer jobs pay per year?

As of May 28, 2026, the average yearly pay for javascript developer in Hartford, CT is $107,512.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,600.00 and $129,100.00 per year, depending on experience, location, and employer.

What Does a JavaScript Developer Do?

As a JavaScript developer, your main responsibilities are to code functional web applications using the JavaScript (JS) programming language and to patch and update application code as needed to optimize functionality. You program front-end code for web applications, collaborate with back-end developers, and use tools like integrated development environments (IDEs), Git, and browser dev tools.

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

To thrive as a JavaScript Developer, you need strong proficiency in JavaScript, HTML, CSS, and a solid understanding of web development principles, often backed by a degree in computer science or comparable experience. Familiarity with frameworks like React or Angular, version control systems like Git, and build tools such as Webpack is typically required. Problem-solving, attention to detail, and effective communication are crucial soft skills for collaborating on projects and resolving technical challenges. These skills and qualities ensure the delivery of robust, maintainable, and efficient web applications that meet user and business needs.

What are some common challenges faced by JavaScript Developers when working on large-scale applications?

JavaScript Developers working on large-scale applications often encounter challenges such as maintaining code readability, managing dependencies, and ensuring performance optimization. As projects grow, it becomes essential to implement best practices like modularization, code reviews, and thorough testing to prevent bugs and technical debt. Collaboration with backend developers, designers, and QA testers is frequent, requiring clear communication and an agile mindset to deliver features efficiently and address issues as they arise.

What is the difference between Javascript Developer vs Front-End Developer?

AspectJavascript DeveloperFront-End Developer
Primary FocusWriting and optimizing JavaScript codeDesigning and implementing user interfaces
Required SkillsJavaScript, HTML, CSS, frameworks like React or AngularHTML, CSS, JavaScript, UI/UX design
Work EnvironmentWeb development teams, software companiesWeb design agencies, tech firms, startups

Javascript Developers focus on coding and scripting using JavaScript, while Front-End Developers handle the overall design and user experience of websites. Both roles often overlap, but the Javascript Developer specializes in scripting, whereas the Front-End Developer emphasizes UI/UX design and layout.

More about Javascript Developer jobs
What are the most commonly searched types of Javascript Developer jobs in Hartford, CT? The most popular types of Javascript Developer jobs in Hartford, CT are:
What are popular job titles related to Javascript Developer jobs in Hartford, CT? For Javascript Developer jobs in Hartford, CT, the most frequently searched job titles are:
What job categories do people searching Javascript Developer jobs in Hartford, CT look for? The top searched job categories for Javascript Developer jobs in Hartford, CT are:
What cities near Hartford, CT are hiring for Javascript Developer jobs? Cities near Hartford, CT with the most Javascript Developer job openings:
Javascript Developer jobs near you
Infographic showing various Javascript Developer job openings in Hartford, CT as of May 2026, with employment types broken down into 60% Full Time, 20% Part Time, and 20% Contract. Highlights an 80% In-person, and 20% Remote job distribution, with an average salary of $107,512 per year, or $51.7 per hour.
.NET Developer - Application Modernization (Hybrid)

.NET Developer - Application Modernization (Hybrid)

InstantServe LLC

Hartford, CT • On-site

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Client: Connecticut Office of Early Childhood (OEC)
Location: Hartford, CT (Hybrid - 2 days onsite)
Duration: February 16, 2026 - June 30, 2026
Hours: Monday-Friday, 8:00 AM - 5:00 PM EST (40 hours/week)
Interview Process: Webcam interview followed by in-person interview
Local Candidates Only: Must be local or willing to commute/relocate
Position Overview
The Connecticut Office of Early Childhood (OEC) is seeking an experienced .NET Software Application Developer to support a legacy-to-modern application modernization initiative. This role involves full-stack development using .NET Framework 4.8, with responsibilities spanning both server-side and user interface development.
The developer will work closely with database and ETL teams in an Agile Scrum environment, contributing to application development, performance optimization, security hardening, and CI/CD pipelines using Azure DevOps.
Key Responsibilities
Requirements & Analysis
  • Collaborate with product owners, business stakeholders, and architects to gather and document technical and functional requirements
  • Translate business requirements into Azure DevOps work items, acceptance criteria, and development tasks
  • Create and maintain technical documentation, UI/interface mappings, and operational runbooks
Application Development
  • Design, develop, and refactor server-side components using C#, ASP.NET MVC (.NET Framework 4.8)
  • Build and maintain UI components using Razor Views, HTML5, CSS3, JavaScript, jQuery, and Bootstrap
  • Implement background jobs, scheduled tasks, and Windows services without introducing additional API layers
  • Conduct code reviews and enforce best practices related to security, performance, and maintainability
Database & Integration
  • Develop and optimize SQL Server / Azure SQL database objects, including schemas, stored procedures, and indexes
  • Collaborate with data engineers on SSIS/ETL processes and file-based integrations
  • Validate data migration, system integrations, and referential integrity
Performance, Security & Operations
  • Identify and resolve performance bottlenecks using caching, batching, and asynchronous processing
  • Implement secure coding practices, including authentication and authorization mechanisms
  • Support logging, monitoring, diagnostics, and incident response documentation
DevOps & Agile
  • Support CI/CD pipelines in Azure DevOps, including builds, releases, and deployments
  • Assist with deployment artifacts, rollback strategies, and release documentation
  • Actively participate in all Agile/Scrum ceremonies
Required Skills & Qualifications
  • Strong experience with C# and .NET Framework 4.8 (ASP.NET MVC, Razor)
  • Hands-on experience with Entity Framework and/or ADO.NET
  • Strong T-SQL, stored procedure development, and SQL performance tuning skills
  • Front-end experience with HTML, CSS, JavaScript, jQuery, and Bootstrap
  • Experience using Azure DevOps (Git, pipelines, work items)
  • Proficiency with Visual Studio 2022
  • Strong troubleshooting and production support experience
Preferred Qualifications
  • Experience with SSIS or other ETL tools
  • Unit and integration testing experience
  • Legacy .NET application modernization experience
  • Experience developing Windows services, scheduled tasks, or job schedulers
  • Familiarity with application logging, monitoring, and operational runbooks
  • Knowledge of enterprise security and data access controls
  • Familiarity with accessibility standards (WCAG) and cross-browser compatibility
Background Check Requirements
  • Employment verification (past 7 years)
  • Education verification (highest degree)
  • Federal, State, and County criminal background checks
  • Civil court history
  • Social Security address verification
  • National Sex Offender Registry check
  • Global monitoring check
InstantServe logo

About InstantServe

Sourced by ZipRecruiter

InstantServe provides a one-stop solution to all Healthcare, IT/Non-IT Staffing needs. Established in 2016, InstantServe is a strong workforce of over 100+ go-getters with a demonstrated background in IT/Non-IT service. We are a nationally certified SBE from the Department of Administration (State of PA). As a proud Minority Woman Owned Small Business Enterprise (M/WBE), InstantServe boasts of a strong team of professionals who have extensive experience catering to several Federal, Public, Commercial, and Healthcare Clients which includes 26 States and 46 government agencies. InstantServe is a client-centric organization that offers cost-effective and reliable solutions. Client satisfaction is sacrosanct! Our team strives to provide the best staffing and IT solutions to take your business to the next level.

Industry

Recruiting and staffing services

Company size

11 - 50 Employees

Headquarters location

Wayne, PA, US

Year founded

2016

Social media

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