Jobs in the United States

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Added 18 hours ago
Junior Tester
9th Way Insignia
Remote, United States
Understanding of API testing using tools like Postman, RestSharp, or similar libraries.
Added 18 hours ago
Sr Java Developer
Charles Schwab
Southlake, TX
…curated investment themes backed by Schwab research. As a Java Developer on the Thematic Core Services team, you will play a key role in designing and delivering scalable, high-performing…
Added 18 hours ago
Manager, Software Development and Engineering
Charles Schwab
Southlake, TX
Schwab is recruiting a driven, results-oriented software developer who shares our passion for technology, innovation and excellence. Our main goal here at Schwab is to transform people’s…
Added 18 hours ago
Blue Yonder WMS Techno/Functional Lead
Accenture
Houston, TX · Irving, TX · Austin, TX
Minimum of 2 years of hands on technical (MOCA, SQL, API-based integration, and Java development) and functional (BY WMS application configuration capabilities, common pitfalls, and…
Added 18 hours ago
RA
Strategic Account Executive
River AI Inc.
Palo Alto, CA
- $200,000 to $350,000 USD / year
We are seeking experienced Founding Account Executives to drive the growth and adoption of River API.
Added 18 hours ago
Mechanical Engineer
Eichleay Main Career Page
Ferndale, WA
Assure all mechanical engineering designs meet applicable codes and standards including company standards, API, ASME as well as others used in static and rotating equipment mechanical…
Added 18 hours ago
M
Product Manager II, Maps AI
Mapbox
Remote, United States
- $150,025 to $202,975 USD / year
…experiences within the apps and products people use every day. As the developer platform for live location, we’re evolving how people interact with maps and location data, including…
Added 18 hours ago
FHIR Software Engineer IV
Availity
Remote, United States
Added 18 hours ago
Principal AI Architect
Innovation Associates, Inc.
United States
Track record of modernizing a large, revenue-bearing platform (monolith decomposition, re-platforming, API and event architecture) while it stayed in service.
Added 18 hours ago
Mid-Level Java API Developer
System One
Pittsburgh, PA
Collaborate with development teams to build and enhance API features at scale.
Added 18 hours ago
Prophet 21 Systems Analyst
The Planet Group
Michigan, MI
Experience with the P21 API, SQL Server stored procedures, or integrations between P21 and other business systems.
Added 18 hours ago
PD
Senior DevSecOps Engineer
Pantheon Data
Reston, VA
- $145,000 to $200,000 USD / year
…scanning, container scanning, IaC scanning, license compliance, and API security - with findings triaged through the vulnerability management dashboard and merge request security…
Added 18 hours ago
PD
Senior AI Engineer (Agentic Systems)
Pantheon Data
Reston, VA
- $120,000 to $220,000 USD / year
Strong Python engineering skills: readable, maintainable, tested code; debugging; packaging; and API and service design.
Added 19 hours ago
Senior Manager - Product Partnerships
GoDaddy
United States
Technical fluency: you can hold your own in an API and architecture conversation, and you understand the agent/AI ecosystem (MCP, LLM platforms, agentic workflows) well enough to spot real…
Added 19 hours ago
Senior ServiceNow ITMS Developer
CACI
Remote, United States
We are seeking an experienced ServiceNow ITSM Senior Developer to lead the design, development, and implementation of IT Service Management solutions. This role requires deep technical…
Added 19 hours ago
RPA Developer
CACI
Remote, United States
We are seeking a RPA (Robotic Process Automation) Developer to support the Joint Transportation Management System (JTMS) program. The ideal candidate will work with automation technologies…
Added 19 hours ago
Senior Data Center Engineer
USP
Rockville, MD
 Infrastructure as Code using API-based infrastructure automation tools (Ansible, Terraform) and CI/CD DevOps pipelines;
Added 19 hours ago
Forward Deployed Senior AI Engineer
SAP
New York, NY
…learning frameworks (e.g. TensorFlow, PyTorch, Scikit-learn), and API-based AI…
Added 19 hours ago
Principal Systems Analyst (Jira, SQL, Insomnia)
Fidelity Technology Group, LLC
Durham, NC
Experience with Structured Query Language (SQL) and API (Application Programming Interface) consumer tools such as Insomnia.
Added 19 hours ago
SI
Offensive Security Researcher, Senior
Salesforce, Inc.
CA · WA
- $148,500 to $246,000 USD / year
Deep understanding of: Web application security (OWASP Top 10 and beyond) Authentication & authorization flaws API security Injection attacks, logic flaws, and access control bypasses…
Added 19 hours ago
Software Engineer, Back-End - Mail (LatAm)
Superhuman
San Francisco, CA
- Experience with real-time systems, event-driven architectures, or high-throughput API design is a plus.
Added 19 hours ago
Staff Machine Learning Engineer_Voice AI
ServiceNow
San Diego, CA
…Conversation Management, Speech Generation, integration with API and self-hosted Voice AI models, Voice…
Added 19 hours ago
Senior Staff Machine Learning Engineer_Voice AI
ServiceNow
Santa Clara, CA
…Conversation Management, Speech Generation, integration with API and self-hosted Voice AI models, Voice…
Added 19 hours ago
Senior Staff AI-Native DevOps Engineer
ServiceNow
San Diego, CA
Ability to deploy, operate, and troubleshoot AI-powered services in production, including managing model API integrations, observability, latency, resource utilization, and operational…
Added 19 hours ago
Staff AI-Native DevOps Engineer
ServiceNow
San Diego, CA
Ability to deploy, operate, and troubleshoot AI-powered services in production, including managing model API integrations, observability, latency, resource utilization, and operational…

System One

Mid-Level Java API Developer

Pittsburgh, PA, United States

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Job details

Apply by: Jan 31, 2027
Posting language: English
Posted: Nov 2, 2026

Original job description

Job Title: Mid- Level Java API Developer Location: Pittsburgh, PA Type: Permanent Full Time Work Model: Onsite

Responsibilities

Design, develop, maintain, and implement APIs, microservices, and backend components.
Collaborate with development teams to build and enhance API features at scale.
Improve API standards, performance, and service quality.
Develop and unit test Java-based RESTful services that integrate with external systems.
Utilize DevOps tools including Jenkins, uDeploy, Git, and CI/CD pipelines.
Review technical design documents and provide feedback on solutions, estimates, and implementation approaches.
Create technical designs for new applications and enhancements to existing systems.
Translate business and functional requirements into scalable system designs.
Prioritize work effectively and meet project deadlines.
Collaborate closely with business stakeholders, architects, developers, and external partners.
Research and recommend frameworks, libraries, and tools to streamline development efforts.
Participate in Agile development processes and code reviews.

Requirements

4+ years of experience in Java/J2EE development.
Strong experience with REST APIs, Spring Boot, Spring Framework, XML, JSON, and Swagger/OpenAPI.
4+ years of experience developing and consuming SOAP and REST web services in production environments.
Experience building APIs and microservices in large-scale enterprise environments.
Experience with OpenShift, containerization, and microservices architecture.
3+ years of experience using GitHub, Jenkins, and CI/CD tools.
Knowledge of front-end technologies such as Node.js and Angular (version 8+ preferred).
Experience with Kubernetes, Apache Kafka, and MongoDB.
Experience integrating Java applications with Oracle and/or SQL Server databases.
Hands-on experience developing secure REST APIs and implementing application security best practices.
Strong understanding of software development lifecycle methodologies and Agile practices.
Excellent collaboration, communication, and problem-solving skills.
Strong verbal and written communication skills.

Preferred Skills

Enterprise application development experience.
Experience working in highly regulated or large-scale environments.
Strong troubleshooting and performance optimization capabilities.
Exposure to cloud-native technologies and modern application architecture patterns.

System One, and its subsidiaries including 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.

#LI- Ref: #404-IT Pittsburgh

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