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Senior Software Developer Jobs in Merrimack, NH (NOW HIRING)

Experience: 7+ years of software development experience, including 3+ years in web application programming. * Education: Bachelor's/Master's degree in Computer Science or a related field. * Back-End ...

Senior Software Engineer

Merrimack, NH · On-site

$125K - $165K/yr

Senior Software Engineer The Role A well-rounded senior software engineering professional with a strong foundation in modern development practices, this individual demonstrates a deep understanding ...

Senior Software Engineer

Lowell, MA · On-site +1

$118K - $195K/yr

As a Senior Software Engineer, your main focus will be on designing, developing, testing and collaborating with other contributors over the world to bring features on existing components or bootstrap ...

Senior Software Engineer

Nashua, NH · On-site

$123K - $163K/yr

We are looking to hire a Senior Software Engineer who wants to get involved with a small, fast-paced, and dynamic company. Responsible for developing, maintaining, and advancing state-of-the-art ...

Senior Software Engineer

Nashua, NH

$123K - $163K/yr

We are looking to hire a Senior Software Engineer who wants to get involved with a small, fast-paced, and dynamic company. Responsible for developing, maintaining, and advancing state-of-the-art ...

Senior Software Engineer

Nashua, NH · On-site

$123K - $163K/yr

We are looking to hire a Senior Software Engineer who wants to get involved with a small, fast-paced, and dynamic company. Responsible for developing, maintaining, and advancing state-of-the-art ...

Senior Software Engineer

Andover, MA · On-site

$123K - $163K/yr

They are seeking a Senior Software Engineer to solve complex business problems through software design and engineering solutions, working closely with finance, operations, and investment teams to ...

Senior Software Engineer

Derry, NH · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Plaistow, NH · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Salem, NH · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Windham, NH · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Lowell, MA · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Andover, MA · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Carlisle, MA · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

Senior Software Engineer

Andover, MA · On-site

$138K - $180K/yr

Saab Inc.'s Autonomous and Undersea Systems (AUS) division is seeking an innovative and experienced Senior Software Engineer to participate on technical teams defining, architecting, implementing ...

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Senior Software Developer information

See Merrimack, NH salary details

$15

$63

$89

How much do senior software developer jobs pay per hour?

As of Aug 5, 2026, the average hourly pay for senior software developer in Merrimack, NH is $63.20, according to ZipRecruiter salary data. Most workers in this role earn between $53.65 and $70.87 per hour, depending on experience, location, and employer.

What skills and qualifications are needed to thrive as a senior software developer?

To thrive as a Senior Software Developer, you need deep expertise in programming languages, software architecture, and problem-solving, typically backed by a bachelor’s degree in computer science or a related field. Proficiency with development frameworks, version control systems like Git, and cloud platforms such as AWS or Azure is standard, and certifications in these areas can be beneficial. Leadership, strong communication, and mentoring abilities set standout candidates apart in this role. These skills ensure that complex projects are delivered efficiently, code quality is maintained, and junior team members are effectively guided for overall team success.

What does a senior software developer do?

As a Senior Software Developer, you’ll typically be responsible for leading complex development projects, designing technical solutions, and mentoring junior team members. Daily tasks often include writing and reviewing code, participating in architecture discussions, collaborating with cross-functional teams (such as QA, product management, and DevOps), and troubleshooting high-level technical issues. You may also be involved in setting coding standards, conducting code reviews, and helping to plan sprints or project roadmaps.

What is a senior software developer?

Senior Software Developers are experienced professionals who design, develop, and maintain complex software applications. They often lead development teams, mentor junior developers, and make critical architectural decisions. Their responsibilities include writing high-quality code, troubleshooting technical issues, and ensuring that software projects meet performance and security standards. With deep expertise in programming languages and software engineering principles, they play a key role in delivering successful technology solutions for organizations.

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

AspectSenior Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's or higher in CS or related field; similar experience levels
Work EnvironmentCollaborates on complex projects, mentors juniors, leads technical effortsDesigns, develops, tests software; may work on specific modules or systems
Industry UsageCommonly used in tech companies, startups, and enterprise firmsWidely used across industries, often interchangeable with developer roles

The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

What are the most commonly searched types of Software Developer jobs in Merrimack, NH? The most popular types of Software Developer jobs in Merrimack, NH are:
What are popular job titles related to Senior Software Developer jobs in Merrimack, NH? For Senior Software Developer jobs in Merrimack, NH, the most frequently searched job titles are:
What job categories do people searching Senior Software Developer jobs in Merrimack, NH look for? The top searched job categories for Senior Software Developer jobs in Merrimack, NH are:
What cities near Merrimack, NH are hiring for Senior Software Developer jobs? Cities near Merrimack, NH with the most Senior Software Developer job openings:
Infographic showing various Senior Software Developer job openings in Merrimack, NH as of July 2026, with employment types broken down into 81% Full Time, 6% Part Time, 1% Temporary, and 12% Contract. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution, with an average salary of $131,462 per year, or $63.2 per hour.

Senior Software Engineer/Developer

Fidelity Investments

Merrimack, NH • On-site

$125K - $165K/yr

Full-time

Re-posted 19 days ago


Fidelity Investments rating

8.7

Company rating: 8.7 out of 10

Based on 271 frontline employees who took The Breakroom Quiz

15th of 150 rated financial services


Job description

Job Description:

Position Description:

Develops and maintains test automation solutions and internal utilities using Java or similar languages within the quality engineering organization. Conducts data validation and works with SQL, DB2, and Oracle databases. Builds automation pipelines by leveraging DevOps concepts and Continuous Integration and Continuous Delivery (CI/CD), including Maven, Git/GitHub, Jenkins, and Sonar. Operates effectively within Agile/Scrum teams using JIRA and XRAY. Develops on-cloud platforms using Azure and AWS. Provides business solutions by developing complex software applications.

Primary Responsibilities:

  • Contributes within Agile Sprint squads.

  • Develops original and creative technical solutions to ongoing development efforts.

  • Designs applications or subsystems on major projects and for/in multiple platforms.

  • Develops applications for multiple projects supporting several divisional initiatives.

  • Supports and performs all phases of testing leading to implementation.

  • Assists in the planning and conducting of user acceptance testing.

  • Develops comprehensive documentation for multiple applications supporting several corporate initiatives.

  • Responsible for post-installation testing of any problems.

  • Establishes project plans for projects of moderate scope.

  • Works on complex assignments and often multiple phases of a project.

  • Performs independent and complex technical and functional analysis for multiple projects supporting several initiatives.

Education and Experience:

Bachelor's degree in Applied Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and three (3) years of experience as a Senior Software Engineer/Developer (or closely related occupation) developing automated testing frameworks, and executing User Interface (UI), Application Programming Interface (APIs), and database testing within software quality engineering and test automation domains.

Or, alternatively, Master's degree in Applied Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and one (1) year of experience as a Senior Software Engineer/Developer (or closely related occupation) developing automated testing frameworks, and executing User Interface (UI), Application Programming Interface (APIs), and database testing within software quality engineering and test automation domains.

Skills and Knowledge:

Candidate must also possess:

  • Demonstrated Expertise ("DE") implementing automated testing frameworks using Java, Selenium WebDriver, Cucumber (BDD), TestNG, and Maven, to develop regression scripts, perform database validations, and ensure comprehensive coverage for web applications and backend systems.

  • DE developing complex SQL queries for data validation and backend testing to ensure compliance and data accuracy; and using JIRA and Xray for defect tracking and reporting.

  • DE performing quality assurance testing of data migration between on-prem and cloud, using Java, Python, Oracle, Splunk, and Snowflake; analyzing Agile JIRA stories and creating test cases in JIRA-Xray; and executing test cases in ICEDQ.

  • DE developing extensive prompt files with GitHub Copilot to streamline automation script creation and improve code quality across enterprise-level test automation initiatives.

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Certifications:Category:Information Technology

Please be advised that Fidelity's business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.


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