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Senior Dot Net Developer Jobs in Massachusetts (NOW HIRING)

Horizontal Talent

Senior .NET Developer Optimizely

Salem, MA · Remote

$59.50 - $78.75/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Quincy, MA · Remote

$57.25 - $75.75/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Lawrence, MA · Remote

$57.25 - $75.50/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Beverly, MA · Remote

$60.25 - $79.50/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Randolph, MA · Remote

$55.50 - $73.50/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Peabody, MA · Remote

$60.50 - $80/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Lynn, MA · Remote

$56.25 - $74.25/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

$55.50 - $73.25/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Waltham, MA · Remote

$59.50 - $78.50/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Boston, MA · Remote

$59.25 - $78.25/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

Horizontal Talent

Senior .NET Developer Optimizely

Lowell, MA · Remote

$54.75 - $72.25/hr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... NET Core/MVC, especially in Optimizely CMS environments. * Advanced frontend experience with HTML5 ...

ConnectPay

Junior .NET Developer

Foxboro, MA

$70K - $92K/yr

Collaborate with Operations Staff, Business Analysts, Quality Assurance and Senior Developers to ... NET, SQL * Experience working with Team Foundation Server, SourceSafe or similar source control ...

ConnectPay

Junior .NET Developer

Foxboro, MA · On-site

$70K - $92K/yr

Collaborate with Operations Staff, Business Analysts, Quality Assurance and Senior Developers to ... NET, SQL * Experience working with Team Foundation Server, SourceSafe or similar source control ...

Integrated Resources INC

.Net Developer

Pittsfield, MA · On-site

$53.75 - $71.25/hr

NET resource required Experience in MVC & Aglile methodology is a must Qualifications Only EAD, GC and Citizens with W2 can apply Additional Information Regards, Harshad Sr.Technical Recruiter ...

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All JobsDot Net Developer JobsSenior Dot Net Developer JobsSenior Dot Net Developer Jobs in Massachusetts

Senior Dot Net Developer information

See Massachusetts salary details

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How much do senior dot net developer jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for senior dot net developer in Massachusetts is $65.75, according to ZipRecruiter salary data. Most workers in this role earn between $57.74 and $73.51 per hour, depending on experience, location, and employer.

What does a senior dot net developer do?

A Senior Dot Net Developer designs, develops, and maintains software applications using Microsoft's .NET framework. They work on complex projects, often leading development teams, architecting solutions, and ensuring code quality through best practices. Their responsibilities also include troubleshooting issues, optimizing application performance, and mentoring junior developers. They typically collaborate with other IT professionals and stakeholders to deliver scalable and efficient software solutions.

What are the key skills and qualifications needed to thrive as a senior dot net developer?

To thrive as a Senior Dot Net Developer, you need advanced proficiency in C#, .NET frameworks, object-oriented programming, and a bachelor's degree in computer science or a related field. Expertise with Visual Studio, SQL Server, Azure DevOps, and relevant certifications like Microsoft Certified: .NET Developer are highly valued. Strong problem-solving, leadership, and effective communication skills help drive complex projects and mentor junior team members. These competencies ensure robust, scalable software solutions and foster high-performing development teams.

How does a senior .NET developer typically collaborate with cross-functional teams during a project lifecycle?

As a Senior .NET Developer, you will frequently work alongside product managers, UI/UX designers, quality assurance testers, and other developers to deliver robust software solutions. Your role often involves clarifying technical requirements, providing input on architecture and feasibility, and ensuring seamless integration with other systems. Effective communication and proactive problem-solving are vital, as you'll help bridge the gap between technical and non-technical stakeholders. Regular code reviews and agile ceremonies like sprint planning and stand-ups are common in this collaborative environment.

What is the difference between Senior Dot Net Developer vs Software Engineer?

AspectSenior Dot Net DeveloperSoftware Engineer
Required CredentialsBachelor's in CS or related, .NET certificationsBachelor's in CS or related, various programming certifications
Work EnvironmentDeveloping .NET applications, coding, debuggingDesigning, coding, testing software across platforms
Employer & Industry UsageTech companies, finance, healthcare using .NETBroad industry use, including tech, finance, startups
Common Search & ComparisonYesYes

The main difference between a Senior Dot Net Developer and a Software Engineer lies in their focus areas. Senior Dot Net Developers specialize in building and maintaining applications using the .NET framework, often with specific certifications. Software Engineers have a broader scope, working across various programming languages and platforms. Both roles are vital in tech industries, but the Senior Dot Net Developer role is more specialized in Microsoft technologies.

What are the most commonly searched types of Dot Net Developer jobs in Massachusetts?

The most popular types of Dot Net Developer jobs in Massachusetts are:

What are popular job titles related to Senior Dot Net Developer jobs in Massachusetts?

For Senior Dot Net Developer jobs in Massachusetts, the most frequently searched job titles are:

What job categories do people searching Senior Dot Net Developer jobs in Massachusetts look for?

The top searched job categories for Senior Dot Net Developer jobs in Massachusetts are:

What cities in Massachusetts are hiring for Senior Dot Net Developer jobs?

Cities in Massachusetts with the most Senior Dot Net Developer job openings:

What are popular job titles related to Senior Dot Net Developer jobs in MA?

For Senior Dot Net Developer jobs in MA, the most frequently searched job titles are:

Senior Dot Net Developer jobs near you
Infographic showing various Senior Dot Net Developer job openings in Massachusetts as of August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 10% Part Time, 2% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $136,755 per year, or $65.7 per hour.

Senior .NET Developer Optimizely

Horizontal Talent

Lexington, MA • Remote

$61 - $80.50/hr

Full-time

Posted 23 days ago

Job description

Join a fast-moving digital marketing team that is investing heavily in modern web technology, experimentation, and data-driven growth. This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS solutions, launching sophisticated experiments, and using AI-assisted tools to work faster and smarter.

Responsibilities
  • Build and maintain reusable components, page templates, and content models within Optimizely CMS to help marketing teams launch web pages efficiently.
  • Design CMS architecture that supports scalability, security, and strong performance, including Core Web Vitals optimization.
  • Develop and support integrations between Optimizely CMS and enterprise platforms such as Salesforce, Marketo, Adobe Commerce, and internal systems.
  • Create and deploy advanced A/B, split, and multivariate tests in Optimizely Web Experimentation, including custom DOM manipulation and dynamic content changes.
  • Implement personalized web experiences for targeted B2B audiences and account-based marketing campaigns.
  • Partner on server-side testing and feature flagging when frontend testing is not the best fit.
  • Perform thorough cross-browser and cross-device testing to help ensure smooth, consistent user experiences with minimal flicker or layout shift.
  • Define and document best practices, technical standards, and governance guidelines for Optimizely-related work.
  • Collaborate closely with CRO, product, and design teams to evaluate ideas, prototype solutions, and translate designs into polished digital experiences.
  • Use AI-assisted development tools to accelerate coding, debugging, testing, and experimentation workflows.
Skills
  • 5+ years of full-stack web development experience.
  • At least 3+ years of hands-on experience working within the Optimizely ecosystem.
  • Strong backend development skills with C# and .NET Core/MVC, especially in Optimizely CMS environments.
  • Advanced frontend experience with HTML5, CSS3/SASS, and JavaScript, including Vanilla JS, ES6+, jQuery, React, or Vue.
  • Deep understanding of Optimizely platform concepts such as Project JS, visual tags, audience targeting, anti-flicker approaches, and caching behavior.
  • Experience building for complex B2B websites, including lead generation and gated content workflows.
  • Strong Git knowledge and familiarity with modern CI/CD workflows such as Azure DevOps or GitHub Actions.
  • Ability to work independently while also partnering effectively with cross-functional teams.
  • A proactive, solution-oriented mindset with a focus on speed, quality, and continuous improvement.
Preferred Skills
  • Active Optimizely Developer certification in CMS or Web Experimentation.
  • Experience supporting server-side experimentation and feature flagging initiatives.
  • Familiarity with UX/UI collaboration and translating wireframes or Figma designs into interactive experiences.
  • Comfort using AI tools such as GitHub Copilot or ChatGPT to support development efficiency.
  • Experience working in remote-first environments and collaborating across multiple locations.

Horizontal is committed to fostering an inclusive environment where all qualified candidates can thrive. We value diversity, equity, and inclusion as essential to building strong teams, better ideas, and better outcomes.

By applying for this position, you acknowledge and agree that Horizontal Talent may contact you regarding your application using automated technology, including phone calls, SMS/text messages, or email, which may be delivered by our virtual AI recruiter, Alex.

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