Senior JavaScript Developer jobs in Hartford, CT

Remote Senior JavaScript/React Developer

Remote

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Today

AboutUs: BasedinSanFrancisco,California,TuringistheworldsleadingresearchacceleratorforfrontierAIlabsandatrustedpartnerforglobalenterprisesdeployingadvancedAIsystems.Turingsupportscustomersintwoways:first,byacceleratingfrontierresearchwithhigh-qualitydata,advancedtrainingpipelines,plustopAIresearcherswhospecializeinsoftwareengineering,logicalreasoning,STEM,multilinguality,multimodality,andagents;andsecond,byapplyingthatexpertisetohelpenterprisestransformAIfromproofofconceptintoproprietaryintellig

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Contract

200 - 300

Senior Full Stack Developer - JavaScript

Remote

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4d ago

Detailed Job Description: Position Title: Sr. Full Stack Engineer Location: 100% Remote Duration: 6 Months Contracts + Extension As a Senior Full Stack Engineer, candidate will be responsible for building and maintaining robust data pipelines and ETL processes that power analytics and reporting across Client programs. Candidate will also develop and optimize complex SQL queries to support large-scale educational data analysis and take responsibility for creating design specifications, unit te

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Contract

$75 - $82

Remote Senior JavaScript/React Engineer

Remote

•

Today

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Contract

200 - 300

*Senior Full Stack Engineer (Backend focused - Nodejs, Javascript, AWS exp.) - W2 role

Remote

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21d ago

Kellton Tech is a full-service software development company, offering end-to-end IT solutions, strategic technology consulting and product development services in Web, SMAC (Social, Mobile, Analytics, Cloud), ERP-BPM, and IoT space Our methodology of inventing infinite possibilities with technology helps us develop best in-class and cost effective solutions for our clients. Currently Kellton Tech is looking for talented resources for one of our listed client. Below are the position details Posit

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Contract, Third Party

Depends on Experience

Senior Performance Engineer- JMeter, JavaScript - Remote

Remote

•

Today

Description & Requirements Maximus is currently seeking a Senior Performance Engineer. The Senior Performance Engineer leads performance engineering activities across large-scale healthcare technology programs. This role defines performance test strategies, develops and maintains performance testing frameworks, creates realistic workload models, and evaluates application scalability, reliability, stability, and capacity. The engineer partners with Development, Architecture, DevOps, Cloud Engine

Full-time

USD 120,000.00 per year

Senior JavaScript Test Automation Engineer

Remote

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Today

We are looking for a Senior Test Automation Engineer with strong experience in JavaScript- or TypeScript-based automation frameworks. The ideal candidate should have hands-on experience building and maintaining automated tests for modern web applications and APIs, with a strong focus on quality, reliability, and maintainability. This role requires solid automation experience, strong testing fundamentals, and the ability to collaborate effectively with development, product, and QA teams. Responsi

Full-time

ServiceNow Developer - JavaScript, REST APIs & Integrations(Remote)

Remote

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13d ago

ServiceNow Developer JavaScript, REST APIs & IntegrationsEmployment Type:Full-Time / Permanent Work Arrangement:Remote Salary:$120,000 per year Work Authorization:U.S. Citizenship Required Position OverviewWe are seeking an experiencedServiceNow Developerto join our team in a full-time, remote position. The ideal candidate will have5+ years of hands-on ServiceNow development experiencewith strong expertise inJavaScript, ServiceNow scripting, workflows, Flow Designer, REST APIs, integrations, pl

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Full-time

120,000 - 130,000

Senior Web Developer/Designer

Remote

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11d ago

Inovalon was founded in 1998 on the belief that technology, and data specifically, would empower the transformation of the entire healthcare ecosystem for the better, improving both outcomes and economics. At Inovalon, we believe that when our customers are successful in their missions, healthcare improves. Therefore, we focus on empowering them with data-driven solutions. And the momentum is building. Together, as ONE Inovalon, we are a united force delivering solutions that address healthcare

Full-time

USD 95,800.00 - 120,000.00 per year

Senior Full Stack Java Developer

Remote or San Jose, California

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Today

DatamanUSA has an exciting opportunity for a Senior Full Stack Java Developer to work with one of our direct clients in San Jose, CA. Job Title: Senior Full Stack Java Developer Duration: 12 Months Location: San Jose, CA (REMOTE) Deliverables: Design, develop, and maintain full stack enterprise applications using Java, Spring Framework, Hibernate, and React. Develop and implement RESTful APIs and microservices for scalable system integrations. Deploy and manage applications on Apache Tomcat a

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Contract, Third Party

USD 55-60

Senior Full-stack Developer

Remote

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4d ago

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than the marketplace that connects you with hand-picked startups in the US and Europe. We only accept applications submitted through the link provided at the job listing. Please apply here.What we offer: The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.No more hunting for clients or negotiating

Contract

85000 - 199000

Senior .NET Developer

Remote or Hybrid in Vienna, Virginia

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7d ago

ITCON Services is seeking a highly experienced Senior Developer for a contingent position to provide operations, maintenance, and modernization of system that includes user forms, the entry, validation, certification, approval, and posting of data and centralized data warehouse to support reporting of program information. The Senior Developer will design, develop, enhance, deploy, and maintain Microsoft-based web applications, data integrations, databases, and reports using C#, ASP.NET/.NET, S

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Full-time

130,000 - 140,000

Senior Application Developer

Remote or Lynnfield, Massachusetts

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Today

Job Description Senior Application Developer About the Role We are seeking a highly skilled Senior Application Developer / Technical Lead to design, develop, support, and enhance enterprise web applications using modern Microsoft technologies. The ideal candidate will have strong experience with Angular, C#, .NET, IIS, Identity Management solutions, GitHub, Azure DevOps (ADO), and application security remediation practices. This role requires a hands-on technical leader who can collaborate ac

Full-time

USD 96,250.00 - 125,000.00 per year

Senior Full Stack Developer

Remote

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5d ago

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a federal cloud modernization and product development effort focused on scalable, secure, cloud-native applications hosted in AWS. This is a remote opportunity supporting ongoing application modernization, technology migration, and product enhancement initiatives. The Senior Full Stack Developer will collaborate with client stakeholders, solution architects, product owners, UX designers, platform engineers

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Contract

Depends on Experience

JavaScript Developer (Remote)

Remote or Stafford, Virginia

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Today

The following states/districts are excluded from this job ad: AK, CA, CO, CT, DC, HI, LA, MA, MN, MO, NE, NV, NH, NJ, NM, NY, ND, OR, PR, RI, VT, WA, WY Future Need - Actively Interviewing Location: Remote in any United States jurisdiction not excluded from this job advertisement. Are you passionate about JavaScript coding and ready to take on new challenges? We're seeking a skilled JavaScript Developer to support the development and enhancement of Department of Veterans Affairs solutions. If

Full-time

USD 89,759.00 - 117,910.00 per year

Senior Software Engineer I- Fullstack

Remote

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Today

As a Senior Software Engineer I - EHR Integrations, Fullstack, you are someone who has experience building "0 to 1 products'', and you thrive in an ambiguous environment. As the Sr. SWE I on the team, you will be taking Aledade's world class point of care insights (Dx suggestions, analytics, care suggestions) one step closer to the Electronic Health Record (EHR) systems that our partner practices use for patient management! You will be building cutting-edge full stack applications, built on top

Full-time

Senior Frontend Engineer

Remote

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Today

At ClickUp, we're building the future of work: the first truly converged AI workspace unifying tasks, docs, chat, calendar, and enterprise search, all supercharged by context-driven AI. We are an AI-native company. Every team member is expected to leverage AI daily, and we evaluate AI fluency as part of our hiring process. Join us and help redefine what's possible. Role Overview We're looking for a Senior Frontend Engineer to help build and improve core product experiences at ClickUp. You'll wo

Full-time

USD 160,000.00 - 210,000.00 per year

Senior Software Engineer (Frontend)

Remote

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12d ago

Overview Join an amazing team that is consistently recognized for our achievements and culture, including our most recent Forbes award of being one of America's Best Midsize Employers for 2026! Position Summary: As a Senior Software Engineer, you will play a crucial role in designing, developing, and maintaining complex software systems. This position involves leading agile teams or projects, mentoring junior engineers, and ensuring the delivery of high-quality software solutions. Geo-Salary

Full-time

USD 94,458.00 - 179,048.00 per year

Senior Java Developer

Remote

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Today

CTEC is a leading technology firm that provides modernization, digital transformation, and application development services to the U.S. Federal Government. Headquartered in McLean, VA, CTEC has over 300 team members working on mission-critical systems and projects for agencies such as the Department of Homeland Security, Internal Revenue Service, and the Office of Personnel Management. The work we do effects millions of U.S. citizens daily as they interact with the systems we build. Our best-in-

Full-time

Software Engineer (L5) - JavaScript Platform

Remote

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Today

At Netflix, our mission is to entertain the world. Together, we are writing the next episode - pushing the boundaries of storytelling, global fandom and making the unimaginable a reality. We are a dream team obsessed with the uncomfortable excitement of discovering what happens when you merge creativity, intuition and cutting-edge technology. Come be a part of what's next. We are the JS Applications Platform team. Our mission is to make it fast, safe, and joyful to build and ship the JavaScript

Full-time

USD 388,000.00 - 558,000.00 per year

Senior Front End Software Developer (AI, React, JavaScript) - Remote US

Remote or Waltham, Massachusetts

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Today

Job Title Senior Front End Software Developer (AI, React, JavaScript) - Remote US Location(s) United States - Waltham MA About Us Revvity is a developer and provider of end-to-end solutions designed to help scientists, researchers, and clinicians solve the world's greatest health challenges. We pair the enthusiasm of an industry disruptor with the experience of a longtime leader. Our team of 11,000+ colleagues from around the globe are vital to our success and the reason we're able to push bou

Full-time

USD 130,000.00 - 158,000.00 per year

Senior JavaScript Developer jobs in Hartford, CT, USA