Sr.Java API Developer

Pittsburgh , Pennsylvania

Apply Apply with LinkedIn
Save

Type: Direct-Hire

Experience: 0

Category: Information Technology

Contractor Work Model: Onsite

Brand: System One

Compensation Range: 170.00

Job ID: 376146

Date Posted: 06/29/2026

Shortcut: http://jobs.systemone.com/0eB9KK


Job Title: Sr.Java API Developer

Location: Pittsburgh, Pennsylvania, United States

Type: Direct Hire

Compensation: $170.00

Work Model: Onsite – onsite

Hours: 40.0

Security Clearance: Not specified

Overview

Leave placeholder text here for recruiter to input

Responsibilities

  • Design, build, and deploy Java RESTful services and microservices to support client applications.
  • Develop API standards, improve existing services, and collaborate with API developers across teams to build new features at large scale.
  • Create and review technical design documents, and translate detailed requirements into functional system designs.
  • Utilize DEVOPs tools such as Jenkins, uDeploy, and GIT to streamline deployment processes.
  • Work with open-source and library components to expedite development and enhance system capabilities.
  • Integrate applications with Oracle / SQL Server databases and work with containerization tools like OpenShift and Kubernetes.
  • Adhere to security best practices by coding to prevent hacking vulnerabilities.
  • Participate in Agile teams, providing technical expertise and effective communication across diverse groups.
Requirements
  • At least 6+ years of experience in Java API development, REST APIs, Spring Boot, XML, JSON, and Swagger.
  • Proven experience developing and consuming SOAP and REST web services in a production environment.
  • Experience working with OpenShift, Containerization, and Microservices architecture.
  • 3+ years of experience with GitHub, Jenkins, and CI/CD pipelines.
  • Knowledge of client-side technologies such as Node.js and Angular 8+.
  • Hands-on experience with Kubernetes, Apache Kafka, and MongoDB.
  • Strong understanding of integrating Java applications with Oracle or SQL Server databases.
  • Excellent collaboration, communication, and writing skills in an Agile 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.

#M-

#LI-

  • Sr.Java Full Stack Developer

    Pitsburgh , Pennsylvania

    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 per...

    Date Posted: 06/30/2026 Recommended

  • Mid Java API Developer

    Pittsburgh , Pennsylvania

    Mid Java API Developer Job Type: Permanent Full Time Location: Pittsburgh, Pennsylvania, United States Description: Mid Java API Developer Position Description This role must be performed in Pittsburgh, PA -or- Dallas, TX on the client site 5 days per ...

    Date Posted: 06/29/2026 Recommended

  • Java API Tech Lead

    Pittsburgh , Pennsylvania

    Job Title: Java API Tech Lead Location: Pittsburgh, Pennsylvania Type: Contract To Hire Compensation: $70.00 - $10,000.00 Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Not specified Overview Leave placeholder text here for recruiter to in...

    Date Posted: 06/29/2026 Recommended

  • Cloud Solution Architect - Prisma

    Charlotte, North Carolina

    Job Title: Cloud Solution Architect - Prisma Location: Charlotte, North Carolina, United States Type: Contract Responsibilities: Design and build scalable, secure multi-cloud architectures across AWS, Azure, and GCP. Work across cloud infrastructure, K...

    Date Posted: 05/31/2026 Recommended

  • Platform Engineer (DevOps)

    Salt Lake City, Utah

    Job Title: Platform Engineer (DevOps) Location: Salt Lake City, UT Responsibilities • Design, build, and optimize enterprise CI/CD pipelines using GitHub Actions and other modern DevOps platforms • Administer enterprise Source Code Management (SCM) rep...

    Date Posted: 08/06/2026 Recommended

  • Lead Full-Stack Developer

    McLean, VA

    Lead Full-Stack Developer Remote This role supports a federal client and requires the ability to obtain a public trust clearance. No sponsorship is available. We are seeking a Lead Full-Stack Developer to support a major federal modernization initiativ...

    Date Posted: 06/22/2026 Recommended

  • Senior Full Stack Developer

    McLean, VA

    Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a federal cloud modernization and product development effort focused on scalable, secure, cloud-native applications hosted in AWS. This is a remote opportunity s...

    Date Posted: 06/22/2026 Recommended

  • Principal DevOps Engineer

    Pittsburgh, PA

    Principal DevOps Engineer Pittsburgh, PA (Onsite – 5 Days/Week), Strongsville/Cleveland, OH, Birmingham, AL, Pittsburgh, PA, Dallas/Farmers Branch, TX, Phoenix, AZ Contract Industry Banking / Financial Services Preferred Job Summary Seeking a highly ex...

    Date Posted: 06/12/2026 Recommended

  • Sr. Software Architect

    Pittsburgh , Pennsylvania

    Job Title: Sr. Software Architect - Java Location: Pittsburgh, Pennsylvania, United States Responsibilities Lead the technical solution for the team's proofs-of-concept, prototypes and eventual end products or solutions. Team up with client stakeholder...

    Date Posted: 06/29/2026 Recommended

  • Sr. Software Architect - Java

    Dallas, Texas

    Job Title: Sr. Software Architect - Java (Visa Independent candidates only) Location: Dallas, TX Responsibilities Lead the technical solution for the team's proofs-of-concept, prototypes and eventual end products or solutions. Team up with client stake...

    Date Posted: 08/18/2026 Recommended

  • Adobe Workfront & Fusion Developer

    Pittsburgh, Pennsylvania

    Job Title: Adobe Workfront & Fusion Developer Location: Pittsburgh, Pennsylvania Type: Direct Hire Compensation: $0.00 Contractor Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Not specified Overview Responsibilities Configure and maintain...

    Date Posted: 06/04/2026 Recommended

  • Sr, Quality Engineer - API/Kafka

    Pittsburgh , Pennsylvania

    Job Title: Sr, Quality Engineer - API/Kafka Location: Pittsburgh, PA/Cleveland, OH/Dallas, TX Responsibilities Design and develop high quality automated API tests for applications. Develop and manage software test plans, and traceability. Write high qu...

    Date Posted: 06/25/2026 Recommended

  • Senior Solution Architect

    Pittsburgh , Pennsylvania

    Job Title: Senior Solution Architect Client: Client Location: Salt Lake City, Utah, United States Type: Contract To Hire Work Model: Onsite – onsite Hours: 40.0 Security Clearance: Not specified in the provided information Overview Responsibilities * S...

    Date Posted: 08/06/2026 Recommended

  • Senior IAM Engineer

    Midvale , Utah

    Job Title: Senior IAM Engineer (Java & Cloud Native) Location: Salt Lake City, Utah Work Mode : 5 Days Onsite Duration : Contract to Hire About the Opportunity System One is seeking a highly skilled Senior IAM Engineer to design, develop, and support m...

    Date Posted: 06/04/2026 Recommended

  • Java API Developer - 100% remote

    Merrifield, VA

    Job Title: Java API Developer - 100% remote Location: Remote Type: Contract Compensation: Negotiable Work Model: Remote – offsite Hours: 40 hours a week Security Clearance: None but full background check required Responsibilities Develop and implement ...

    Date Posted: 08/20/2026 Recommended

  • Lead DevSecOps Engineer

    Pittsburgh, Pennsylvania

    Job Title: Lead DevSecOps Engineer Location: Pittsburgh, PA Responsibilities Lead the integration of security into CI/CD pipelines, architect secure cloud environments, and guide teams in adopting modern DevSecOps practices to ensure a secure-by-design...

    Date Posted: 06/29/2026 Recommended

  • Lead DevSecOps Engineer

    Strongsville, Ohio

    Job Title: Lead DevSecOps Engineer Location: Strongsville, OH Type: Fulltime Responsibilities Lead the integration of security into CI/CD pipelines, architect secure cloud environments, and guide teams in adopting modern DevSecOps practices to ensure a...

    Date Posted: 06/29/2026 Recommended

  • Lead DevSecOps Engineer

    Dallas , Texas

    Job Title: Lead DevSecOps Engineer Location: Dallas, Texas Responsibilities Lead the integration of security into CI/CD pipelines, architect secure cloud environments, and guide teams in adopting modern DevSecOps practices to ensure a secure-by-design ...

    Date Posted: 06/29/2026 Recommended

  • Full Stack Developer

    Pittsburgh , Pennsylvania

    Job Title: Full Stack Developer Location: Dallas or Plano, Texas. No.Openings: 3 Description: Full Stack Developer Position Description We're growing rapidly and are looking for Full Stack Developers to join our Telecommunications Sector. We're a close...

    Date Posted: 08/04/2026 Recommended

  • Senior Java Full Stack Developer

    Pittsburgh, Pennsylvania

    Position Title: Senior Java Full Stack Developer Position Location - Pittsburgh, PA ; Duration – Direct Hire Employment Type – No C2C or third party vendors at this time Required qualifications to be successful in this role : 6+ years of strong hands-o...

    Date Posted: 06/11/2026 Recommended

  • Senior Solution Architect

    Salt Lake City, Utah

    Job Title: Senior Solution Architect Client Location: Salt Lake City, Utah Type: Contract To Hire Work Model: Onsite Experience * 8+ years of progressive experience in software engineering, solution architecture, or enterprise application development *...

    Date Posted: 08/06/2026 Recommended

  • Senior Solution Architect

    Salt Lake City, Utah

    Job Title: Senior Solution Architect Client Location: Salt Lake City, Utah Type: Contract To Hire Work Model: Onsite Experience * 8+ years of progressive experience in software engineering, solution architecture, or enterprise application development *...

    Date Posted: 08/06/2026 Recommended

  • Java Developer - 100% REMOTE

    Vienna, VA

    Job Title: Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO FACE INTERVIEW, THEN 100% REMOTE Type: Contract Compensation: Negotiable, W-2 or C2C Responsibilities Develop APIs using microservice archite...

    Date Posted: 08/05/2026 Recommended

  • Java API Technical Lead

    Dallas, Texas

    Permanent Onsite Role Position Title: Java API Technical Lead Pittsburgh, PA, Cleveland, OH, or Dallas, TX Your future duties and responsibilities . Responsible to Lead and drive with the team with the client . Responsible for sound and high-quality te...

    Date Posted: 06/29/2026 Recommended

  • Java API Technical Lead

    Pittsburgh, Pennsylvania

    Permanent Onsite Role Position Title: Java API Technical Lead Pittsburgh, PA, Cleveland, OH, or Dallas, TX Your future duties and responsibilities . Responsible to Lead and drive with the team with the client . Responsible for sound and high-quality te...

    Date Posted: 06/29/2026 Recommended

  • Technical Business Analyst - Mid Level

    vienna, VA

    Technical Business Analyst–Senior Location: Vienna, VA (Hybrid) 3 days onsite, 2 days remote Pay Rate: Open to Both C2C and W2 options Position Type: Long Term Contract Client: NFCU, no clearance but background check includes criminal, credit and finge...

    Date Posted: 08/22/2026 Recommended

  • Technical Business Analyst– Senior

    Vienna, VA

    Technical Business Analyst–Senior Location: Vienna, VA (Hybrid) 3 days onsite, 2 days remote Pay Rate: Open to Both C2C and W2 options Position Type: Long Term Contract Client: NFCU, no clearance but background check includes criminal, credit and finge...

    Date Posted: 08/21/2026 Recommended

  • Mid - Senior Level Software Development Engineer in Test

    Merrifield, VA

    Job Title: Mid - Senior Level Software Development Engineer in Test Location: Vienna, VA Work Model: Hybrid – 3 days/week onsite, rest remote Type: Multiyear Contract Description: Top Skills: Full Stack SDET (Front-End and Back-End Automation Test Exp ...

    Date Posted: 08/20/2026 Recommended

  • Fullstack Integration Engineer

    NA, VA

    Senior Full-Stack Integration Engineer Location: Remote – United States Experience: 5+ years of professional software engineering experience We are seeking a Senior Full-Stack Integration Engineer to design, build, and support cloud-based applications,...

    Date Posted: 07/14/2026 Recommended

  • Sr. Quality Automation Engineer

    Dallas, Pennsylvania

    Job Title: Sr. Quality Automation Engineer Location: Dallas, TX Responsibilities Design and develop high-quality automated UI and API tests for web applications. Create industry-standard test automation solutions and scripts. Perform in-sprint manual a...

    Date Posted: 07/07/2026 Recommended