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Senior Java Engineer Jobs in New Hampshire (NOW HIRING)

BAE Systems

Eng Sr - SW

Merrimack, NH · On-site

$125K - $165K/yr

You will join a team of engineers on a program that provides customers with scalable data ... in Java and/or C++ • Proficiency with source code control tools such as git or Bitbucket • ...

BAE Systems

Eng Sr - SW

Hudson, NH · On-site

$123K - $163K/yr

As a Senior Software Engineer, you'll take on a critical role in designing, developing, and ... C#, or Java. * Experience developing in Linux environments. * Hands-on experience with version ...

InterSources

Software Engineer in test

Merrimack, NH · On-site

... Java, Rest services. Expertise on data validation and processes - SQL, DB2, Oracle. Experience ... Interview: 2 rounds Fidelity Investments has a phenomenal opportunity for a Senior Software ...

InterSources

Software Engineer in test

Merrimack, NH · On-site

... Java, Rest services. Expertise on data validation and processes - SQL, DB2, Oracle. Experience ... Interview: 2 rounds Fidelity Investments has a phenomenal opportunity for a Senior Software ...

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All JobsJava Engineer JobsSenior Java Engineer JobsSenior Java Engineer Jobs in New Hampshire

Senior Java Engineer information

What is a senior Java engineer?

Senior Java Engineers are experienced software developers who specialize in designing, developing, and maintaining applications using the Java programming language. They often lead development teams, architect solutions, and ensure that software meets both technical and business requirements. Their responsibilities also include code reviews, mentoring junior developers, and optimizing application performance. Typically, they have several years of experience and a deep understanding of Java frameworks and best practices.

What are the key skills and qualifications needed to thrive as a senior Java engineer?

To thrive as a Senior Java Engineer, you need advanced proficiency in Java programming, strong knowledge of software design patterns, and a degree in computer science or related field. Experience with frameworks like Spring, Hibernate, build tools such as Maven or Gradle, and familiarity with cloud platforms and CI/CD systems are typically required. Excellent problem-solving abilities, leadership, and effective communication help you guide teams and collaborate with stakeholders. These skills are crucial for delivering robust, scalable software solutions and mentoring junior engineers in complex development environments.

What are some common challenges senior Java engineers face when working on large-scale enterprise applications?

Senior Java Engineers often encounter challenges such as managing complex codebases, ensuring application scalability, and maintaining high performance under heavy loads. They are also responsible for implementing robust security practices and integrating new technologies without disrupting existing systems. Effective collaboration with cross-functional teams and mentoring junior developers are crucial aspects of the role, as these responsibilities help maintain code quality and project momentum.

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

AspectSenior Java EngineerJava Developer
Required CredentialsBachelor's in Computer Science, Java certifications (e.g., Oracle Certified Professional)Bachelor's in Computer Science or related field, Java certifications optional
Work EnvironmentDesigning, developing, and maintaining complex Java applications, often in team leadership rolesDeveloping Java applications, focusing on coding and implementation
Industry UsageUsed across finance, tech, and enterprise sectors for large-scale projectsCommonly employed in software development firms, startups, and tech companies

While both roles involve Java programming, Senior Java Engineers typically handle complex system design, mentorship, and project leadership, whereas Java Developers focus more on coding and implementing features. The senior role often requires more experience and certifications, with a broader scope of responsibilities.

What are the most commonly searched types of Java Engineer jobs in New Hampshire?

The most popular types of Java Engineer jobs in New Hampshire are:

What are popular job titles related to Senior Java Engineer jobs in New Hampshire?

For Senior Java Engineer jobs in New Hampshire, the most frequently searched job titles are:

What job categories do people searching Senior Java Engineer jobs in New Hampshire look for?

The top searched job categories for Senior Java Engineer jobs in New Hampshire are:

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Cities in New Hampshire with the most Senior Java Engineer job openings:

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For Senior Java Engineer jobs in NH, the most frequently searched job titles are:

Senior Java Engineer jobs near you
Infographic showing various Senior Java Engineer job openings in New Hampshire as of August 2026, with employment types broken down into 95% Full Time, 2% Part Time, and 3% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution.

Eng Sr - SW

Merrimack, NH • On-site

BAE Systems
National Security and International Affairs • 10K+ employees
Learn more about BAE Systemsexternal

$125K - $165K/yr

Other

Re-posted 29 days ago

Key responsibilities

  • Design, develop, test, deploy, and document features and fixes in ongoing software releases.

  • Collaborate with a small multi-discipline team of engineers and work closely with program subject matter experts to learn the code base and take ownership of specific portions.

  • Participate in the software development lifecycle within an agile environment, including building upon and modernizing existing software capabilities.

BAE Systems rating

8.4

Company rating: 8.4 out of 10

Based on 151 frontline employees who took The Breakroom Quiz

Job description


Do you have experience writing code in Java? Do you love Linux? Have you built and used automated build pipelines? Have you worked on a small team previously and worn a few hats? We need your talents and experience as a Senior Software Engineer on our Space Systems team.
You will join a team of engineers on a program that provides customers with scalable data processing enabling real-time situational awareness in support of the warfighter. You will have the opportunity to build upon and modernize existing software capabilities. Tired of learning a new program every 6 months? Our position provides stable work for a long-time customer.
When you become a member of our team, you will work across multiple disciplines and collaborate with our Systems, Hardware, and Test Engineers to impact all phases of the Software Development Lifecycle. At BAE Systems, we promote a strong, collaborative culture and provide our employees with the tools, skills and training they need to succeed. We offer a flexible work environment and multiple options for work schedules (9/80, 4/10, and others). Our company is part of the community and driven to improve our future and protect our freedom.
If you have worked previously in a secure environment, consider yourself a rockstar teammate, and enjoy contributing to a mission that matters, we'd love to meet you!
Job Responsibilities
• Agile software design, development, test, deployment, and documentation of features and fixes in ongoing releases of fielded software
• Collaborate with a small multi-discipline team of engineers
• Work closely with program subject matter experts to learn the code base and identify portions for which to take ownership
Because of the need for consistent, in-person collaboration and/or the requirement to perform all work onsite due to the nature of this particular role, it will be performed full-time on site.
Due to the importance, this position offers a Sign-On Bonus. (Note: Current BAE Systems employees are ineligible for sign-on bonuses.)
Please note that pursuant to a government contract, this specific position requires US citizenship status.
About BAE Systems Electronic Systems
BAE Systems, Inc. is a defense, aerospace, and security company headquartered in Falls Church, Virginia, with more than 40,000 employees worldwide. We serve, supply, and protect those who protect us. As one of the most geographically diverse international defense companies, we deliver a full range of products and services spanning air, land, maritime, space, and cyber, including advanced electronics, intelligence solutions, and dedicated customer support.
Our culture is performance-driven and values-led, built on curiosity, creativity, and collaboration. Purpose isn't a tagline here. It's what drives us. We're developing breakthrough technologies that defend national security and make a lasting impact on our communities and our planet. When you join BAE Systems, you're not just building a career. You're contributing to a mission that truly matters.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.
Required Skills and Education
Required:
• A Bachelor's degree in Computer Science or a related discipline
• Active TS/SCI Clearance, and the ability to successfully complete a CI poly
• Have or able to achieve Security+ certification upon hire
• 4+ years of software development experience
• Proficiency in Java and/or C++
• Proficiency with source code control tools such as git or Bitbucket
• Strong communication, collaboration, & interpersonal skills
• Experience building & using automation pipelines (Jenkins, Maven, Bamboo, or others)
Preferred Skills and Education
Preferred:
• Experience with the Atlassian tool suite (Jira, Confluence, Bitbucket, Bamboo)
• Experience developing on Linux Operating Systems

What BAE Systems employees say

Pay

Benefits

Hours and flexibility

Workplace

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About BAE Systems

Sourced by ZipRecruiter

At BAE Systems, we provide some of the world's most advanced, technology-led defence, aerospace and security solutions. We employ a skilled workforce of more than 93,000 in around 40 countries. Working with customers and local partners, we develop, engineer, manufacture, and support products and systems to deliver military capability, protect national security and people, and keep critical information and infrastructure secure.

Industry

National security and international affairs and it services

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

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