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Backend Engineer Java Jobs in Portsmouth, NH (NOW HIRING)

Nubble Site Solutions

Android Software Developer

York, ME · On-site

$50K - $100K/yr

In this role you will be working closely with our Lead Software Developer and assisting with ... Preferred experience in Kotlin or Java, and preferred knowledge of at least one backend language ...

All JobsBackend Engineer Java JobsBackend Engineer Java Jobs in Portsmouth, NH

Backend Engineer Java information

See Portsmouth, NH salary details

$10

$55

$74

How much do backend engineer java jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for backend engineer java in Portsmouth, NH is $55.67, according to ZipRecruiter salary data. Most workers in this role earn between $49.47 and $64.18 per hour, depending on experience, location, and employer.

What does a backend engineer Java do?

A Backend Engineer Java is responsible for developing and maintaining the server-side logic, databases, and application programming interfaces (APIs) using the Java programming language. They ensure that the backend of web applications or software systems is efficient, secure, and scalable. Their work often involves collaborating with frontend developers, designing system architecture, and optimizing performance to handle large volumes of user requests. Backend Java engineers often use frameworks such as Spring or Hibernate and work with databases like MySQL or PostgreSQL.

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

To thrive as a Backend Engineer Java, you need a solid understanding of Java programming, data structures, algorithms, and experience with backend frameworks, typically supported by a relevant degree or industry experience. Familiarity with tools and technologies such as Spring Boot, RESTful APIs, relational databases, and build systems like Maven or Gradle is commonly required. Problem-solving ability, teamwork, and effective communication are crucial soft skills for excelling in collaborative and fast-paced development environments. These combined skills ensure robust, scalable backend systems that meet business needs and integrate smoothly within larger software architectures.

How does a backend engineer Java typically collaborate with frontend developers and other stakeholders in a project?

As a Backend Engineer Java, you will regularly collaborate with frontend developers to ensure seamless integration between server-side logic and user interfaces. This often involves participating in design discussions, clarifying API requirements, and troubleshooting integration issues. You’ll also engage with product managers, QA engineers, and sometimes DevOps teams to align on project goals, timelines, and deployment strategies. Effective communication is key to translating business requirements into reliable backend solutions and maintaining smooth workflows across the team.

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

AspectBackend Engineer JavaBackend Developer Java
Primary FocusDesigning, developing, and maintaining server-side applications and systemsImplementing and coding backend functionalities based on specifications
ResponsibilitiesSystem architecture, performance optimization, API developmentWriting code, debugging, integrating databases
Skills & CertificationsJava, Spring, REST APIs, SQL, cloud platformsJava, Spring, SQL, version control, testing tools
Work EnvironmentCollaborative teams, project planning, architecture designCode implementation, debugging, feature development

Both roles require Java expertise and similar certifications, but Backend Engineer Java typically involves higher-level system design and architecture responsibilities, while Backend Developer Java focuses more on coding and implementing features. Employers often see these roles as complementary within software development teams.

What are popular job titles related to Backend Engineer Java jobs in Portsmouth, NH?

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

What cities near Portsmouth, NH are hiring for Backend Engineer Java jobs?

Cities near Portsmouth, NH with the most Backend Engineer Java job openings:

Backend Engineer Java jobs near you

Software Engineer (Java - Legacy Systems Modernization)

Hampton, NH • On-site

GruntWorx, LLC.
See more jobs at GruntWorx, LLC.external

$52.50 - $72/hr

Other

Medical, Dental, Vision, PTO

Posted 9 days ago

Job description

Software Engineer
(Java – Legacy Systems Modernization)

We are now accepting applications for a full-time, remote role in our Engineering Department.

We are seeking a hands‑on Software Engineer with strong Java experience to maintain, troubleshoot, and modernize a large, multi‑module enterprise platform. This role focuses on improving stability, performance, and security across a mature codebase while supporting ongoing feature development. You will work across backend services, web applications, and legacy UI layers, contributing to both day‑to‑day operations and longer‑term modernization efforts.

Key Responsibilities:
  • Maintain and enhance existing Java‑based web applications and backend services
  • Troubleshoot and resolve production issues with a focus on performance and reliability
  • Optimize system performance and improve scalability of legacy components
  • Develop and maintain features across:
    • Spring MVC controllers and RESTful APIs
    • Data access layers (MyBatis, PostgreSQL)
    • Legacy UI components (JSP, JSTL, jQuery)
  • Manage builds and deployments using Ant/Ivy and WAR packaging on Tomcat
  • Support and enhance application security, including authentication and authorization mechanisms (JWT, 2FA, role‑based access)
  • Collaborate with cross‑functional teams to identify and implement modernization opportunities
  • Refactor legacy code to improve maintainability and testability
Required Qualifications:
  • Strong experience with Java 8
  • Experience managing PostgreSQL environments (configuration, optimization, and maintenance) beyond basic schema design
  • Solid knowledge of:
    • Spring MVC and Spring Security
    • Servlets, JSP, and JSTL
    • RESTful APIs and JSON
  • Experience working with:
    • Ant and Ivy build tools
  • Proven ability to debug complex issues in legacy systems
  • Experience supporting production environments
Preferred Qualifications:
  • Experience with security frameworks and tools (JWT, BCrypt, 2FA)
  • Familiarity with:
    • WebSockets / STOMP
    • LDAP integration
    • Messaging frameworks (ActiveMQ, Apache Camel)
    • jQuery / jQuery UI
    • Hibernate
    • SOAP / JAX-WS services
  • Experience with legacy system refactoring and modernization
  • Knowledge of rules engines such as Drools
Nice-to-Have (Secondary Backend Experience in C/C++):
  • Experience with C/C++ backend systems, including:
    • POSIX threading, signals, and process lifecycle management
    • Socket and network programming
    • Experience building native applications using Make on Linux
    • Integration with XML/SOAP services (e.g., Axis2/C)
    • Familiarity with native libraries for OCR/PDF processing
    • Performance tuning and memory debugging in long‑running services
What We’re Looking For:
  • A problem‑solver who thrives in complex, legacy environments
  • Strong debugging and troubleshooting skills
  • A pragmatic engineer who can balance maintenance with modernization
  • Someone comfortable working across the full stack of a traditional Java web application
  • Health, dental, and vision insurance
  • Paid time off
About Us:

Gruntworx is a Drake Enterprises, LTD company based out of Franklin, NC with locations in Virginia Beach, VA and Hampton, NH. We are customer‑centric, offering software products and services to professional tax‑preparers. We offer unique opportunities throughout our organizations and our goal is to be the employer of choice and our customers first choice.

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