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Senior Mern Stack Developer Jobs in Pennsylvania

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities: * Design, develop, and maintain Java API services, including RESTful APIs and ...

Varsitybrands

Senior Full Stack Developer

Indiana, PA · Remote

A truly exceptional software developer will serve as an advocate for a great user experience, and ... Designs, documents, and builds new systems and enhancements across the full stack, including UI/UX, ...

Dellfor Technologies

senior .net developer

Pittsburgh, PA

$53.50 - $68/hr

NET stack (WISA, WINS) C#, WPF * Recent 1+ years of developing web application in open source stack (MEAN, MERN) * 2+ years of writing code in JS (ES6), JQuery, HTML, CSS, C# * At Least 5+ years of ...

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Senior Mern Stack Developer information

What are the key skills and qualifications needed to thrive as a Senior MERN Stack Developer, and why are they important?

To thrive as a Senior MERN Stack Developer, you need deep expertise in JavaScript, proficiency with MongoDB, Express.js, React.js, and Node.js, and typically a bachelor's degree in computer science or related field. Experience using source control systems like Git, familiarity with cloud platforms (e.g., AWS), and understanding of CI/CD pipelines are highly valued. Strong problem-solving, leadership, and effective communication skills help you guide teams and collaborate with stakeholders. These skills ensure efficient development of scalable web applications and effective team leadership in dynamic tech environments.

What is a Senior MERN Stack Developer?

A Senior MERN Stack Developer is an experienced software engineer who specializes in building full-stack web applications using the MERN stack: MongoDB, Express.js, React, and Node.js. They handle both front-end and back-end development, create scalable and efficient applications, and often mentor junior team members. In addition to coding, they may be responsible for designing application architecture, optimizing performance, and ensuring best practices throughout the development process.

How does a Senior MERN Stack Developer typically collaborate with other team members on large-scale projects?

As a Senior MERN Stack Developer, you’ll often work closely with front-end and back-end developers, UI/UX designers, QA engineers, and product managers to deliver robust web applications. Collaboration usually involves participating in code reviews, architectural discussions, sprint planning, and daily stand-up meetings. You may also mentor junior developers, help define best practices, and ensure seamless integration across the MERN (MongoDB, Express, React, Node.js) stack. Effective communication and teamwork are essential, especially when troubleshooting complex issues or deploying new features.
What are the most commonly searched types of Mern Stack Developer jobs in Pennsylvania? The most popular types of Mern Stack Developer jobs in Pennsylvania are:
What are popular job titles related to Senior Mern Stack Developer jobs in Pennsylvania? For Senior Mern Stack Developer jobs in Pennsylvania, the most frequently searched job titles are:
What job categories do people searching Senior Mern Stack Developer jobs in Pennsylvania look for? The top searched job categories for Senior Mern Stack Developer jobs in Pennsylvania are:
What cities in Pennsylvania are hiring for Senior Mern Stack Developer jobs? Cities in Pennsylvania with the most Senior Mern Stack Developer job openings:
Senior Mern Stack Developer jobs near you
Infographic showing various Senior Mern Stack Developer job openings in Pennsylvania as of June 2026, with employment types broken down into 25% Full Time, 65% Part Time, 5% Temporary, and 5% Contract. Highlights an 87% Physical, 6% Hybrid, and 7% Remote job distribution.

Sr.Java Full Stack Developer

System One

Pittsburgh, PA • On-site

$51 - $65.75/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 7 days ago

Job description

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities:

  • Design, develop, and maintain Java API services, including RESTful APIs and microservices, ensuring scalability, security, and high performance.
  • Work with front-end UI development using Angular, HTML, and CSS to create engaging, user-friendly interfaces.
  • Implement and optimize API standards and services, collaborating with cross-functional teams to build large-scale features.
  • Develop, test, and deploy backend components using Spring Boot, microservices, and containerization technologies such as OpenShift and Kubernetes.
  • Integrate Java-based applications with databases like Oracle, SQL Server, MongoDB, and messaging systems such as Apache Kafka.
  • Utilize DevOps tools including Jenkins, uDeploy, GitHub, and CI/CD pipelines to automate workflows and ensure continuous delivery.
  • Review design documents, create technical systems designs, and translate requirements into functional solutions.
  • Collaborate with internal and external stakeholders, including API developers, business analysts, and QA teams, within an Agile environment.
  • Research and apply modern libraries and technologies to expedite development and improve application security.

Requirements:

  • At least 6+ years of Java API development experience with REST API, Spring Boot, XML, JSON, Swagger.
  • Minimum 6+ years of experience developing and consuming SOAP and REST web services in production environments.
  • 5+ years of front-end UI development experience using Angular, HTML, and CSS.
  • Hands-on experience with OpenShift, containerization, Kubernetes, and microservices architecture.
  • 3+ years working with GitHub, Jenkins, and CI/CD pipelines.
  • Proficiency with client-side technologies like Node JS and Angular 8+.
  • Experience with Kafka, MongoDB, and integrating Java applications with Oracle/SQL Server databases.
  • Strong understanding of security best practices to prevent vulnerabilities in coding.
  • Excellent collaboration, communication, and interpersonal skills in an Agile team environment.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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Ref: #404-IT Pittsburgh